{"title":"Sensors","description":"\u003cp\u003eThe right sensor turns a circuit into something that \u003cstrong\u003esees, feels, and reacts\u003c\/strong\u003e. This collection spans the full range makers reach for — motion (PIR, ultrasonic), environment (temperature, humidity, pressure, gas, air quality), light and colour, distance, current and voltage, touch, sound, and IMUs for motion tracking — all compatible with Arduino, ESP32, ESP8266, and Raspberry Pi.\u003c\/p\u003e\u003cp\u003eEvery module is genuine and bench-tested, with the interfaces you'd expect (analog, I2C, SPI, UART), so it drops straight into your build.\u003c\/p\u003e\u003ch3\u003eChoosing a sensor\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMotion \u0026amp; presence:\u003c\/strong\u003e PIR for human movement; ultrasonic (HC-SR04) or ToF for precise distance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnvironment:\u003c\/strong\u003e DHT22 for temperature\/humidity, BMP280 for pressure, MQ-series for gas.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMotion tracking:\u003c\/strong\u003e MPU6050 (6-axis) for tilt, orientation, and gesture.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eGenuine parts, fast shipping across India, Cash on Delivery, and a GST invoice on every order.\u003c\/p\u003e","products":[{"product_id":"xkc-y25-npn-non-contact-liquid-level-sensor-for-water-tanks-pipes","title":"XKC-Y25 NPN Non-Contact Liquid Level Sensor for Water Tanks \u0026 Pipes","description":"\u003ch1\u003eXKC-Y25 NPN Intelligent Non-Contact Liquid Water Level Sensor (5-24V, Non-Metal Tank Detection)\u003c\/h1\u003e\n\n\u003cp\u003eThe XKC-Y25 is a capacitive non-contact liquid level sensor that detects water presence through plastic, glass, or ceramic walls without direct fluid contact. It outputs an NPN signal (low when liquid detected) suitable for microcontrollers and control circuits. Ideal for water tanks, pipelines, and automatic water level control systems.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd\u003e5-24V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003eNPN (active low)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSensing Distance\u003c\/td\u003e\n\u003ctd\u003eUp to 13mm through non-metal wall\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eResponse Time\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;100ms\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;5mA\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-20°C to 80°C\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/kit-water-level-indicator\"\u003eWater level indicator with LED or LCD display\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003eAutomatic water pump controller for overhead tanks\u003c\/li\u003e\n  \u003cli\u003eTank overflow alarm with buzzer and relay\u003c\/li\u003e\n  \u003cli\u003ePipe burst detection by monitoring flow at multiple points\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eWorks with 3.3V and 5V logic microcontrollers like Arduino, ESP8266, ESP32, Raspberry Pi (with voltage divider). Output is open-collector NPN, requires pull-up resistor to VCC. Connect signal pin to digital input.\u003c\/p\u003e\n\n\u003ch2\u003eWiring Notes\u003c\/h2\u003e\n\u003cp\u003eConnect red wire to VCC (5-24V DC), black wire to GND, yellow wire to digital input pin. Add a 10kΩ pull-up resistor from yellow wire to VCC if microcontroller internal pull-up is insufficient. Ensure sensor face is tightly attached to the non-metal container wall.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\n\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\n\n\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino?\u003c\/summary\u003e\u003cp\u003eYes, the NPN output can be read directly by Arduino digital pins. Connect with a 10kΩ pull-up resistor and detect LOW when water is present.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan it detect water through metal pipes?\u003c\/summary\u003e\u003cp\u003eNo, it works only through non-metallic materials like plastic, glass, or ceramic. Metal interferes with capacitive sensing.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is the maximum sensing distance?\u003c\/summary\u003e\u003cp\u003eUp to 13mm through a non-metal barrier, but this reduces with thicker or denser materials. Ensure the sensor face is flush against the container.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53444951998829,"sku":"CDN-0184","price":670.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/download_e1c937c6-34b9-4199-a158-6231d13137f8.jpg?v=1781596906"},{"product_id":"xkc-y26-pnp-24v-non-contact-liquid-level-sensor-compoden","title":"XKC-Y26 PNP 24V Non-Contact Liquid Level Sensor – Compoden","description":"\u003ch1\u003eXKC-Y26 PNP 24V Intelligent Non-Contact Liquid Level Sensor\u003c\/h1\u003e\u003cp\u003eThe XKC-Y26 is an intelligent non-contact capacitive liquid level sensor that detects fluid levels through non-metal container walls up to 6mm thick. Operating at 24V with PNP output, it switches when liquid is present, making it ideal for industrial tanks, aquariums, and water purification systems. No direct liquid contact eliminates corrosion and contamination risks.\u003c\/p\u003e\u003ch2\u003eKey Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eDetection Method\u003c\/td\u003e\n\u003ctd\u003eCapacitive, non-contact\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd\u003e12-24V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003ePNP Normally Open\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensing Thickness\u003c\/td\u003e\n\u003ctd\u003eUp to 6mm non-metal wall\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResponse Time\u003c\/td\u003e\n\u003ctd\u003e≤ 500ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCable Length\u003c\/td\u003e\n\u003ctd\u003eApprox. 1 meter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kit-water-tank-level-monitor-kit-v2\"\u003eAutomatic water tank level controller with pump shut-off\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kit-industrial-gas-leak-detector-kit\"\u003eNon-contact liquid leak detector for industrial spill prevention\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/aquarium-water-quality-monitor-kit-with-arduino-tds-and-temp\"\u003eSmart aquarium monitor with low-water alert\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003eChemical drum level indicator without sensor corrosion\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility\u003c\/h2\u003e\u003cp\u003eDesigned for 24V industrial systems with PNP input, this sensor integrates easily with PLCs, relay modules, and microcontrollers. For Arduino or Raspberry Pi, use a voltage divider or optocoupler to convert the 24V output to logic-level signals. Common pairings include automation controllers, Sump pump switches, and SCADA systems.\u003c\/p\u003e\u003ch2\u003eWiring Notes\u003c\/h2\u003e\u003cp\u003eConnect brown wire to +24V, blue to GND, and black to your control input. The PNP output sources current when liquid is detected; ensure your input circuit can sink at least 10mA safely. No pull-up resistor is needed as the output is active-high.\u003c\/p\u003e\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino?\u003c\/summary\u003e\u003cp\u003eYes, but a voltage divider or optocoupler is required to step down the 24V PNP output to the 5V logic safe for Arduino pins.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan it detect liquid through glass or plastic?\u003c\/summary\u003e\u003cp\u003eAbsolutely—it works through any non-metallic material up to 6mm thick, including glass, plastic, and ceramic containers.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eDoes it include a sensitivity adjustment?\u003c\/summary\u003e\u003cp\u003eNo, the XKC-Y26 has fixed sensitivity calibrated for common water-based liquids; proper mounting is sufficient for reliable detection.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53444952195437,"sku":"CDN-0186","price":770.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_8290597e-ade3-43b9-a775-b82dcdfb47d8.jpg?v=1781512270"},{"product_id":"xkc-y25-v-non-contact-liquid-level-sensor-5v-digital-output","title":"XKC-Y25-V Non-Contact Liquid Level Sensor | 5V Digital Output","description":"\u003ch1\u003eXKC-Y25-V Intelligent Non-Contact Liquid Water Level Sensor with 5V Digital Output\u003c\/h1\u003e\n\n\u003cp\u003eThe XKC-Y25-V is a capacitive non-contact liquid level sensor that detects water and other liquids through non-metallic container walls, up to 12mm thick, without any direct fluid contact. It outputs a simple digital high\/low signal when liquid is present, making it perfect for automated tank monitoring, overflow prevention, and IoT water management projects.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOutput Signal\u003c\/td\u003e\n\u003ctd\u003eDigital (High when liquid detected, Low otherwise)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSensing Distance\u003c\/td\u003e\n\u003ctd\u003e2–12mm through non-metallic walls\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eResponse Time\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;500ms\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-10°C to +70°C\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/kit-water-tank-level-monitor-kit-v2\"\u003eAutomatic water tank level controller with pump shut-off\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/kit-hydroponic-water-level-monitor\"\u003eNon-invasive aquarium water level monitor\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003eIoT overflow alarm system for overhead tanks\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/kit-automated-plant-watering\"\u003eAutomated plant watering system with soil moisture detection via container\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis sensor works with any microcontroller that accepts 5V digital inputs, including Arduino Uno, Mega, Raspberry Pi (with level shifting), ESP32, and NodeMCU. It requires a 5V power supply and connects directly to a GPIO pin for reading the logic state.\u003c\/p\u003e\n\n\u003ch2\u003eWiring Notes\u003c\/h2\u003e\n\u003cp\u003eConnect VCC to 5V, GND to ground, and the OUT pin to a digital input. The sensor has an onboard voltage regulator and push-pull output; no external pull-up resistor is needed. For Raspberry Pi, use a voltage divider or logic level converter since GPIO is 3.3V.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\n\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\n\n\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino?\u003c\/summary\u003e\u003cp\u003eYes, it outputs a 5V digital signal that can be read directly by any Arduino digital pin without extra components.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan it detect water through a plastic container?\u003c\/summary\u003e\u003cp\u003eYes, it works through common plastics, glass, and ceramic up to 12mm thick. Ensure the container is non-metallic and the sensor is flush against the outer wall.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDoes it work with metal tanks?\u003c\/summary\u003e\u003cp\u003eNo, this sensor requires a non-metallic barrier or direct contact with the liquid. Metal containers block the capacitive field.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53444952293741,"sku":"CDN-0188","price":630.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_0d9c2376-3ace-4242-afe5-c0a8a27b463c.jpg?v=1781512273"},{"product_id":"9-in-1-multi-function-sensor-board-dht11-lm35-temperature-sensor","title":"9-in-1 Multi-Function Sensor Board DHT11 LM35 Temperature Sensor","description":"\u003ch1\u003e9-in-1 Multi-Function Expansion Board with DHT11 and LM35 Temperature Sensor\u003c\/h1\u003e\n\n\u003cp\u003eThis all-in-one sensor board combines a DHT11 digital temperature and humidity sensor with a precision LM35 analog temperature sensor, along with seven additional input\/output components. Designed for rapid prototyping, it provides immediate environmental data for microcontroller projects without individual sensor wiring. The board simplifies development of weather monitors, climate controllers, and data loggers.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSensor Types\u003c\/td\u003e\n\u003ctd\u003eDHT11 (digital temp\/humidity), LM35 (analog temp), photoresistor, IR receiver, buzzer, button, LED, rotary potentiometer, RGB LED\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e3.3V–5.5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTemperature Range (DHT11)\u003c\/td\u003e\n\u003ctd\u003e0°C to 50°C (±2°C accuracy)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eHumidity Range (DHT11)\u003c\/td\u003e\n\u003ctd\u003e20% to 90% RH (±5% accuracy)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTemperature Range (LM35)\u003c\/td\u003e\n\u003ctd\u003e-55°C to 150°C (10mV\/°C linear output)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eBoard Dimensions\u003c\/td\u003e\n\u003ctd\u003e65mm x 30mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/kit-animated-weather-station-display\"\u003eIndoor weather station with real-time display\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/smart-temperature-controlled-fan-with-arduino-kit\"\u003eTemperature-controlled fan or cooling system\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/kit-greenhouse-climate-monitor-kit-with-arduino-uno-plus-sensors\"\u003eGreenhouse climate monitor with data logging\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003eSmart home temperature alert via IoT\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eWorks directly with Arduino Uno, Mega, and Nano boards, as well as Raspberry Pi (with appropriate voltage level conversion if needed). The DHT11 uses a single digital pin, while the LM35 outputs analog voltage. All other onboard components operate at standard 3.3V\/5V logic, making them accessible via jumper wires or direct header stacking.\u003c\/p\u003e\n\n\u003ch2\u003eWiring Notes\u003c\/h2\u003e\n\u003cp\u003eSupply 5V to the VCC pin and connect GND to ground. For DHT11, connect the DATA pin to any digital I\/O (e.g., D2). For LM35, connect the OUT pin to an analog input (e.g., A0). A 4.7kΩ pull‑up resistor is often included on the board for the DHT11; verify before applying external power. Current draw is minimal, but avoid placing near heat sources for accurate readings.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\n\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\n\n\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino Uno?\u003c\/summary\u003e\u003cp\u003eYes, it connects directly to Arduino Uno using female‑to‑female jumper wires or by stacking on a breadboard. All pins are labeled for easy hookup.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow accurate are the temperature readings?\u003c\/summary\u003e\u003cp\u003eThe DHT11 provides ±2°C accuracy, while the LM35 offers ±0.5°C when properly calibrated. For higher precision, use the LM35 output and compensate in software.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDoes this board require soldering?\u003c\/summary\u003e\u003cp\u003eNo soldering is needed; all components are pre‑soldered. Use standard DuPont jumper wires to connect to your microcontroller.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53444952392045,"sku":"CDN-0189","price":410.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/download_15eee62c-8e17-4622-a743-5e722cbe2962.jpg?v=1781522690"},{"product_id":"max1452aaet-sensor-signal-conditioner-ic-ssop-16-smd-0194","title":"MAX1452AAE+T Sensor Signal Conditioner IC - SSOP-16 SMD","description":"\u003ch1\u003eMAX1452AAE+T Precision Sensor Signal Conditioner IC (SSOP-16)\u003c\/h1\u003e\u003cp\u003eThe MAX1452AAE+T from Analog Devices is a highly integrated sensor signal conditioner IC designed for pressure sensors, transducers, and other resistive sensor applications. It provides analog voltage output with digital calibration, eliminating the need for external trims. With on-chip EEPROM and temperature compensation, it delivers high accuracy across a wide temperature range.\u003c\/p\u003e\u003ch2\u003eKey Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd\u003e4.5V to 5.5V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Signal\u003c\/td\u003e\n\u003ctd\u003eAnalog voltage (0.5V–4.5V)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCalibration\u003c\/td\u003e\n\u003ctd\u003e16-bit digital, via serial interface\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Compensation\u003c\/td\u003e\n\u003ctd\u003eInternal sensor, -40°C to +125°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOn-Chip Memory\u003c\/td\u003e\n\u003ctd\u003e128 bytes EEPROM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage\u003c\/td\u003e\n\u003ctd\u003eSSOP-16 SMD (0.65mm pitch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePressure sensor signal conditioning for industrial transmitters\u003c\/li\u003e\n\u003cli\u003eLoad cell and strain gauge amplifier with digital calibration\u003c\/li\u003e\n\u003cli\u003ePrecision temperature-compensated transducer interface\u003c\/li\u003e\n\u003cli\u003eAutomotive sensor modules (MAP, fuel pressure, etc.)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility\u003c\/h2\u003e\u003cp\u003eThis IC works with standard 5V microcontrollers like Arduino, ESP32, STM32, and PIC. It outputs a conditioned analog voltage that can be read directly by ADC inputs. For digital calibration, a bidirectional serial interface is used, compatible with most MCUs supporting SPI-like communication.\u003c\/p\u003e\u003ch2\u003eWiring Notes\u003c\/h2\u003e\u003cp\u003eConnect VDD to 5V and GND to system ground. The analog output (OUT) connects to an ADC channel. Use a 0.1µF decoupling capacitor near the power pins. For serial calibration, the MAX1452 uses a single-wire bidirectional interface (DIO); pull-up resistor may be required as per datasheet.\u003c\/p\u003e\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino?\u003c\/summary\u003e\u003cp\u003eYes, the MAX1452 outputs a 0.5V–4.5V analog signal that can be directly read by Arduino's 5V-tolerant ADC inputs. For calibration, you can use a digital I\/O pin for the DIO interface with appropriate timing.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan I use this for a 3.3V system like ESP32?\u003c\/summary\u003e\u003cp\u003eThe MAX1452 operates at 5V, but the output voltage range is within 0.5V–4.5V, so if your 3.3V ADC has enough headroom, you can directly connect it. However, ensure the ADC input can tolerate up to 4.5V; a voltage divider might be needed for safety.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eDoes it require external components for calibration?\u003c\/summary\u003e\u003cp\u003eNo, all calibration coefficients are stored in on-chip EEPROM. Once programmed via the serial interface, no external trims or resistors are needed.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53444952490349,"sku":"CDN-0194","price":350.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/download_d0a471a7-d6c5-47de-833e-6b87baba8fa8.jpg?v=1781592247"},{"product_id":"hb100-microwave-doppler-radar-motion-sensor-module-10525ghz-0205","title":"HB100 Microwave Doppler Radar Motion Sensor Module – 10.525GHz","description":"\u003ch1\u003eHB100 Microwave Doppler Radar Motion Sensor – 10.525GHz\u003c\/h1\u003e\n\u003cp\u003eThe HB100 is a microwave motion sensor module that uses Doppler radar to detect movement. It emits a 10.525 GHz microwave signal and measures frequency shifts caused by moving objects. This makes it suitable for non-contact motion detection, speed measurement, and presence sensing in various embedded projects.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOperating Frequency\u003c\/td\u003e\n\u003ctd\u003e10.525 GHz\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDetection Range\u003c\/td\u003e\n\u003ctd\u003e2–16 m\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd\u003e4.75V – 5.25V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCurrent Consumption\u003c\/td\u003e\n\u003ctd\u003e30–60 mA typical\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003eAnalog IF signal\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e45 × 37 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eAutomatic door opener systems\u003c\/li\u003e\n  \u003cli\u003eVehicle speed measurement on model roads\u003c\/li\u003e\n  \u003cli\u003ePresence-activated lighting or appliances\u003c\/li\u003e\n  \u003cli\u003eIntruder alarm or security monitoring\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThe HB100 outputs an analog signal that needs amplification before connecting to microcontrollers like Arduino Uno, Nano, ESP32, or Raspberry Pi. It runs on 5V, and the output requires a high-gain amplifier such as the LM358. With proper signal conditioning, it works with motion detection libraries and FFT processing for speed calculation.\u003c\/p\u003e\n\n\u003ch2\u003eWiring Notes\u003c\/h2\u003e\n\u003cp\u003eConnect VCC to 5V, GND to ground, and IF to an analog input via an amplifier circuit. The raw IF output is a small AC voltage (~50 mV peak), so use an op-amp with gain around 1000 and a band-pass filter (10–300 Hz) to isolate the Doppler shift. A stable power supply reduces noise.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\n\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\n\n\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino?\u003c\/summary\u003e\u003cp\u003eYes, with an external amplifier. The IF output must be boosted to the 0-5V range for Arduino ADC. Sample code is available to measure frequency changes.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan it detect stationary people?\u003c\/summary\u003e\u003cp\u003eNo, it only detects motion. A person standing still will not produce a Doppler shift. Very fine movements like breathing may be detected with advanced signal processing but typical applications require movement.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is the detection angle?\u003c\/summary\u003e\u003cp\u003eThe HB100 has a beam width of approximately 72° horizontally and 36° vertically, offering a wide detection zone.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53444952719725,"sku":"CDN-0205","price":200.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/download_a3da948e-770b-418a-9e77-60042f1ba149.jpg?v=1781525879"},{"product_id":"hs-f08b-vibration-sensor-module-with-red-led-indicator","title":"HS-F08B Vibration Sensor Module with Red LED Indicator","description":"\u003ch1\u003eHS-F08B LED Signal Indicator Sensor Module - Red\u003c\/h1\u003e\n\n\u003cp\u003eThe HS-F08B is a vibration sensor module designed to detect physical vibration or tilt and output a digital signal. It features an onboard red LED that illuminates when vibration is detected, providing instant visual feedback. Suitable for alarm systems, motion triggers, and interactive projects.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e3.3V–5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003eDigital (high\/low)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSensor Type\u003c\/td\u003e\n\u003ctd\u003eVibration switch (spring type)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eLED Indicator\u003c\/td\u003e\n\u003ctd\u003eRed LED\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eApprox. 15 x 10 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003e3-pin header (VCC, GND, OUT)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eVibration alarm system for doors or windows\u003c\/li\u003e\n  \u003cli\u003eTap-sensitive light controller\u003c\/li\u003e\n  \u003cli\u003eShake-to-activate gadget\u003c\/li\u003e\n  \u003cli\u003eMachine vibration monitoring with Arduino\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis module operates at 3.3V–5V, making it compatible with Arduino, Raspberry Pi, ESP8266, ESP32, and most microcontrollers. Its digital output connects directly to any digital input pin without level shifting.\u003c\/p\u003e\n\n\u003ch2\u003eWiring Notes\u003c\/h2\u003e\n\u003cp\u003eConnect VCC to 5V (or 3.3V), GND to ground, and OUT to a digital pin. The onboard comparator provides a clean high\/low signal; no pull-up resistors or extra components are needed.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\n\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\n\n\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino Uno?\u003c\/summary\u003e\u003cp\u003eYes, the HS-F08B works with Arduino Uno and any board with 3.3V–5V digital inputs. Simply connect VCC to 5V, GND to GND, and OUT to a digital pin.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan I adjust the sensitivity?\u003c\/summary\u003e\u003cp\u003eThis module uses a mechanical vibration switch; sensitivity is fixed. For adjustable sensitivity, consider a piezoelectric vibration sensor with analog output.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDoes the LED stay on continuously when vibrating?\u003c\/summary\u003e\u003cp\u003eNo, the LED only lights when vibration is detected and turns off when vibration stops. The output signal is momentary and matches the vibration event.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53444953309549,"sku":"CDN-0209","price":95.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_5d7262b9-2306-4191-9e2e-32ba7e1240ea.jpg?v=1781512293"},{"product_id":"vcnl4010-proximity-and-ambient-light-sensor-module-i2c-interface","title":"VCNL4010 Proximity and Ambient Light Sensor Module - I2C Interface","description":"\u003ch1\u003eVCNL4010 Proximity and Ambient Light Sensor Module — I2C Interface\u003c\/h1\u003e\n\n\u003cp\u003eThe VCNL4010 is a fully integrated proximity and ambient light sensor module from Vishay. It combines an IR emitter, photodiode, and signal processing IC on a single board, enabling precise distance measurement up to 200mm and ambient light sensing. This module communicates over I2C, making it easy to integrate with Arduino, ESP32, and Raspberry Pi for touchless control, object detection, and automatic brightness adjustment projects.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSensor Type\u003c\/td\u003e\n\u003ctd\u003eProximity and Ambient Light\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eProximity Range\u003c\/td\u003e\n\u003ctd\u003e1mm to 200mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eAmbient Light Range\u003c\/td\u003e\n\u003ctd\u003e0.25 lux to 16k lux\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eInterface\u003c\/td\u003e\n\u003ctd\u003eI2C (up to 400kHz)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e2.5V to 3.6V\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/kit-gesture-volume-controller\"\u003eTouchless hand gesture controller for adjusting volume or lighting\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/kit-automatic-night-light\"\u003eAutomatic night light that turns on based on ambient darkness\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/kit-edge-detection-robot\"\u003eRobot obstacle detection and edge avoidance system\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003eProximity-triggered display or interactive art installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis sensor works with any microcontroller or single-board computer that supports I2C communication, such as Arduino Uno, ESP32, and Raspberry Pi. It operates at 2.5V to 3.6V, so a logic level converter may be needed for 5V systems. Common pairings include the ESP8266 for IoT proximity alerts or the Arduino Nano for compact wearable projects.\u003c\/p\u003e\n\n\u003ch2\u003eWiring Notes\u003c\/h2\u003e\n\u003cp\u003eConnect VCC to 3.3V, GND to ground, SDA to your board’s SDA pin, and SCL to SCL. Add 4.7kΩ pull-up resistors on SDA and SCL lines if your board doesn’t have them built-in. Avoid placing the sensor near reflective surfaces to prevent false readings.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\n\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\n\n\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino Uno?\u003c\/summary\u003e\u003cp\u003eYes, the VCNL4010 uses I2C communication, which is supported by Arduino Uno. Connect it to the SDA (A4) and SCL (A5) pins and use the VCNL4010 Arduino library for easy integration.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow accurate is the proximity sensing?\u003c\/summary\u003e\u003cp\u003eThe sensor provides 16-bit resolution for proximity measurements, with typical accuracy within a few millimeters from 1mm to 100mm, and slightly less precise beyond 100mm up to 200mm.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan I use this outdoors?\u003c\/summary\u003e\u003cp\u003eThe ambient light sensor can read up to 16k lux, making it suitable for indoor and shaded outdoor use. Direct sunlight may saturate the sensor; placing it in indirect light is recommended.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53444953342317,"sku":"CDN-0207","price":830.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_4bdf9a06-419d-437f-b28b-764149404b3d.jpg?v=1781512296"},{"product_id":"hfs-dc06-58ghz-radar-motion-sensor-module-doppler-detection","title":"HFS-DC06 5.8GHz Radar Motion Sensor Module | Doppler Detection","description":"\u003ch1\u003eHFS-DC06 5.8GHz Microwave Motion Doppler Radar Sensor Module\u003c\/h1\u003e\u003cp\u003eThe HFS-DC06 is a compact 5.8GHz microwave radar sensor that uses the Doppler effect to detect moving objects. It can penetrate non-metallic materials like drywall and plastic, making it suitable for hidden motion detection in automation, security, and lighting projects. With a straightforward digital output and adjustable detection range, it integrates easily with microcontrollers for a wide variety of DIY and professional applications.\u003c\/p\u003e\u003ch2\u003eKey Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e3.3V – 5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Current\u003c\/td\u003e\n\u003ctd\u003e30mA typical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency\u003c\/td\u003e\n\u003ctd\u003e5.8GHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDetection Range\u003c\/td\u003e\n\u003ctd\u003e0 to 10 meters (adjustable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Signal\u003c\/td\u003e\n\u003ctd\u003eDigital (high on motion detected)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterface\u003c\/td\u003e\n\u003ctd\u003e4-pin header (VCC, GND, OUT, EN)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eAutomatic door opener that triggers when someone approaches\u003c\/li\u003e\n\u003cli\u003eMotion-activated lighting system for rooms or corridors\u003c\/li\u003e\n\u003cli\u003eIntruder alarm that senses movement through walls\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kit-garage-vehicle-presence-detector-v19\"\u003eGarage parking sensor to detect vehicle presence\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility\u003c\/h2\u003e\u003cp\u003eWorks with any 3.3V or 5V microcontroller like Arduino UNO, ESP8266, ESP32, and Raspberry Pi (using level shifting if needed). Its digital output can be read directly on a GPIO pin. Pair with a relay module to control high-voltage devices.\u003c\/p\u003e\u003ch2\u003eWiring Notes\u003c\/h2\u003e\u003cp\u003eConnect VCC to 5V, GND to ground, and OUT to any digital input pin. Use the EN pin to enable or disable the sensor (pulled high by default). Mount the sensor away from large metal objects for optimal detection.\u003c\/p\u003e\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino?\u003c\/summary\u003e\u003cp\u003eYes, connect VCC to 5V, GND to GND, and OUT to a digital pin. When motion is detected, the OUT pin goes high (3.3V logic, readable by 5V Arduino).\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan it detect through walls?\u003c\/summary\u003e\u003cp\u003eYes, 5.8GHz microwaves pass through non-metallic materials like drywall, wood, and plastic. It can detect motion behind a thin wall or enclosure.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat is the detection angle?\u003c\/summary\u003e\u003cp\u003eThe module has a hemispherical detection pattern covering a wide area, but for best results, position it facing the area you want to monitor.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53444953407853,"sku":"CDN-0212","price":510.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_a7e64b7e-2247-45f2-8b74-868d6d1ec4db.jpg?v=1781512298"},{"product_id":"xy-md02-sht20-temperature-humidity-sensor-modbus-rtu-module","title":"XY-MD02 SHT20 Temperature Humidity Sensor Modbus RTU Module","description":"\u003ch1\u003eXY-MD02 SHT20 Temperature \u0026amp; Humidity Sensor Module – Modbus RTU\u003c\/h1\u003e\n\n\u003cp\u003eThe XY-MD02 is a precision temperature and humidity sensor module using the SHT20 sensor chip, communicating via Modbus RTU over RS485. It provides accurate environmental data for industrial automation, greenhouses, and weather monitoring. With a wide voltage range and robust protocol, it integrates easily with PLCs and microcontrollers.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSensor\u003c\/td\u003e\n\u003ctd\u003eSensirion SHT20\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eInterface\u003c\/td\u003e\n\u003ctd\u003eRS485, Modbus RTU\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTemperature Range\u003c\/td\u003e\n\u003ctd\u003e-40°C to +125°C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eHumidity Range\u003c\/td\u003e\n\u003ctd\u003e0% to 100% RH\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eAccuracy\u003c\/td\u003e\n\u003ctd\u003e±0.3°C (temp), ±3% RH (humidity, typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePower Supply\u003c\/td\u003e\n\u003ctd\u003e3.3V to 5.5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eIndustrial environmental monitoring system with PLC logging\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/esp32-greenhouse-climate-kit-with-encrypted-mqtt-data-secure-iot\"\u003eSmart greenhouse climate control using Raspberry Pi\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/kit-server-room-temperature-monitor-kit-v4\"\u003eServer room temperature and humidity alert system\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/kit-indoor-weather-station\"\u003eHome automation weather station with Modbus gateway\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThe module works with any device supporting Modbus RTU over RS485, such as Arduino with MAX485 converter, ESP32 with RS485 transceiver, industrial PLCs, and Raspberry Pi with USB-RS485 adapter. It operates at 3.3V to 5.5V logic levels.\u003c\/p\u003e\n\n\u003ch2\u003eWiring Notes\u003c\/h2\u003e\n\u003cp\u003eConnect A (non-inverting) and B (inverting) to your RS485 bus, and power with 3.3–5.5V DC. For long cable runs, use 120Ω termination resistors at both ends of the line.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\n\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\n\n\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino?\u003c\/summary\u003e\u003cp\u003eYes, you can interface it with Arduino using an RS485 transceiver module like MAX485. Wire RO, DI, RE, DE pins appropriately and use a Modbus library.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan I use this with 5V systems?\u003c\/summary\u003e\u003cp\u003eThe module accepts 3.3V to 5.5V power, so it works directly with 5V systems without level shifting.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is the default Modbus address?\u003c\/summary\u003e\u003cp\u003eThe default Modbus slave address is usually 1, but you can modify it via Modbus commands using the configuration register.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53444953440621,"sku":"CDN-0213","price":700.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_0255b94a-8af8-45da-b0b2-e7aef259dc99.jpg?v=1781512301"},{"product_id":"3-channel-ir-line-tracking-path-detection-sensor-module","title":"3-Channel IR Line Tracking \u0026 Path Detection Sensor Module","description":"\u003ch1\u003e3-Channel IR Line Tracking \u0026amp; Path Detection Sensor Module for Robotics\u003c\/h1\u003e\u003cp\u003eThe 3-Channel IR Line Tracking Sensor Module detects lines on contrasting surfaces using three TCRT5000 infrared reflective sensors. Ideal for line-following robots and path detection systems, it provides reliable digital outputs for microcontroller-based projects. Its compact design and adjustable sensitivity make it suitable for both beginner and advanced robotics applications.\u003c\/p\u003e\u003ch2\u003eKey Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e3.3V–5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Consumption\u003c\/td\u003e\n\u003ctd\u003e15mA (typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDetection Range\u003c\/td\u003e\n\u003ctd\u003e1–8 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Signal\u003c\/td\u003e\n\u003ctd\u003eDigital (TTL, active low)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannels\u003c\/td\u003e\n\u003ctd\u003e3 (left, center, right)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e42 × 12 × 8 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kit-line-following-robot\"\u003eLine-following robot with precise path tracking\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kit-maze-solving-robot\"\u003eMaze-solving robot for competitions\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003eAutomated guided vehicle (AGV) warehouse navigation\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kit-pi-5-opencv-lane-detection-car\"\u003eSmart car lane detection system\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility\u003c\/h2\u003e\u003cp\u003eThe sensor works directly with any 3.3V or 5V microcontroller that accepts digital inputs, including Arduino Uno, Nano, Mega, ESP8266, and ESP32. For 3.3V boards like Raspberry Pi, ensure logic level shifting to protect the GPIO pins. It pairs well with motor drivers and chassis kits for constructing mobile robots.\u003c\/p\u003e\u003ch2\u003eWiring Notes\u003c\/h2\u003e\u003cp\u003eConnect VCC to 5V, GND to ground, and OUT1 (left), OUT2 (center), OUT3 (right) to digital inputs. The outputs go low when a line is detected; adjust onboard trimmer potentiometers to set the threshold for your surface contrast. No external pull-up resistors are needed for most microcontrollers.\u003c\/p\u003e\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino Uno?\u003c\/summary\u003e\u003cp\u003eYes, the sensor outputs 5V TTL signals that can be read directly by Arduino digital pins without additional circuitry.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan it detect black lines on a white surface?\u003c\/summary\u003e\u003cp\u003eYes, it is optimized for high-contrast line detection; adjust the onboard potentiometers to set the threshold for black-on-white or white-on-black tracking.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eDoes it come with mounting hardware?\u003c\/summary\u003e\u003cp\u003eThe module includes M3 mounting holes but does not include screws; use standard M3 nuts and bolts for secure attachment.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53444953473389,"sku":"CDN-0215","price":180.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_d11dfc31-ae2b-4029-897c-87887d9d1c84.jpg?v=1781512300"},{"product_id":"58ghz-microwave-motion-sensor-human-presence-detection","title":"5.8GHz Microwave Motion Sensor - Human Presence Detection","description":"\u003ch1\u003eHuman Presence Microwave Motion Sensor 5.8 GHz\u003c\/h1\u003e\n\u003cp\u003eThis sensor uses 5.8 GHz millimeter-wave radar to detect stationary and moving human presence, unlike basic PIR sensors that only detect motion. It reports distance, motion, and static presence data via UART, making it perfect for intelligent automation in homes, offices, and industrial settings.\u003c\/p\u003e\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOperating Frequency\u003c\/td\u003e\n\u003ctd\u003e5.8 GHz\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDetection Range\u003c\/td\u003e\n\u003ctd\u003e0.75 m to 5 m (adjustable)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd\u003e5 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003eUART (TX\/RX), digital presence pin\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDetection Angle\u003c\/td\u003e\n\u003ctd\u003eApproximately 100° conical\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e24 x 24 mm PCB module\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/kit-occupancy-based-lighting\"\u003eOccupancy-based smart lighting that stays on as long as a person is in the room, even if motionless.\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003eEnergy-saving automation to turn off fans, ACs, or monitors when a desk is vacated.\u003c\/li\u003e\n  \u003cli\u003eA security system that triggers an alert or camera when an intruder is present.\u003c\/li\u003e\n  \u003cli\u003ePeople counting and room occupancy dashboard for offices or shops using serial data.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eWorks with any microcontroller that supports 5V logic level UART, such as Arduino Uno, ESP32, or Raspberry Pi Pico. For 3.3V boards like Raspberry Pi GPIO UART, use a level shifter or voltage divider on the sensor’s TX line. Common pairings include ESP32 for Wi-Fi integration and Arduino for rapid prototyping.\u003c\/p\u003e\n\u003ch2\u003eWiring Notes\u003c\/h2\u003e\n\u003cp\u003eConnect VCC to 5V and GND to ground. Connect the sensor’s TX pin to the microcontroller’s RX pin and RX to TX. The digital presence output goes high when human presence is detected; use a 10kΩ pull-up if needed. Ensure the sensor is mounted with its antenna side unobstructed and away from metal.\u003c\/p\u003e\n\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\n\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this compatible with Raspberry Pi 4?\u003c\/summary\u003e\u003cp\u003eYes, but the Raspberry Pi’s GPIO UART operates at 3.3V while the sensor outputs 5V. Use a logic-level converter or a simple resistor divider on the sensor’s TX line to avoid damage.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan it detect a person sitting completely still?\u003c\/summary\u003e\u003cp\u003eYes, this sensor emits and analyses reflected microwave signals, so it can detect stationary human presence by sensing micro-movements like breathing. It provides separate ‘moving’ and ‘static’ status outputs.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is the maximum detection distance?\u003c\/summary\u003e\u003cp\u003eThe sensor can detect presence up to 5 meters, but the firmware allows restricting zones via serial commands. The effective range depends on mounting height and environment.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53444953506157,"sku":"CDN-0216","price":730.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/download_881acacb-2cbb-445d-8cfb-379c3ad019c2.jpg?v=1781522554"},{"product_id":"human-infrared-pir-ceiling-motion-sensor-220v-240v-ac-100w-compoden","title":"Human Infrared PIR Ceiling Motion Sensor 220V-240V AC 100W | Compoden","description":"\u003ch1\u003eHuman Infrared Ceiling Mount PIR Motion Sensor 220V-240V AC 100W\u003c\/h1\u003e\n\n\u003cp\u003eThis ceiling-mounted passive infrared (PIR) motion sensor detects human movement to automatically control lights or other loads up to 100W. Operating directly from 220V-240V AC mains, it is ideal for energy-saving lighting in corridors, stairwells, and bathrooms. No additional driver or relay needed.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e220-240V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMax Load\u003c\/td\u003e\n\u003ctd\u003e100W (resistive)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDetection Range\u003c\/td\u003e\n\u003ctd\u003eUp to 6m\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDetection Angle\u003c\/td\u003e\n\u003ctd\u003e360°\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTime Delay\u003c\/td\u003e\n\u003ctd\u003eAdjustable (10 sec to 7 min)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eInstallation Height\u003c\/td\u003e\n\u003ctd\u003e2.5m ~ 4m\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eAutomatic corridor or staircase lighting\u003c\/li\u003e\n  \u003cli\u003eMotion-activated security lights in garage or porch\u003c\/li\u003e\n  \u003cli\u003eEnergy-saving bathroom fan control\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/kit-ai-presence-room-controller\"\u003ePresence-based room illumination for offices\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis sensor directly switches AC loads, making it compatible with incandescent bulbs, LED lamps (within wattage), fans, and small motors. It connects directly to mains wiring without a microcontroller. For smart home integration, you can use it as a standalone sensor triggering a relay module.\u003c\/p\u003e\n\n\u003ch2\u003eWiring Notes\u003c\/h2\u003e\n\u003cp\u003eConnect live and neutral wires to the input terminals; the output terminals provide switched live to the load. No neutral is switched. Ensure total load does not exceed 100W. The unit must be installed in a ceiling cutout with proper insulation clearance.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\n\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\n\n\u003cdetails\u003e\u003csummary\u003eIs this compatible with LED bulbs?\u003c\/summary\u003e\u003cp\u003eYes, as long as the total wattage does not exceed 100W. Some LED drivers may cause inrush current; but within the rating it operates safely.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan I adjust the detection range and time delay?\u003c\/summary\u003e\u003cp\u003eThe sensor has built-in potentiometers to adjust the time delay (from 10 seconds to 7 minutes) and the sensitivity\/distance. The detection range is generally up to 6 meters at 2.5m height.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs it suitable for outdoor use?\u003c\/summary\u003e\u003cp\u003eThis sensor is designed for indoor ceiling mount; if used outdoors under a covered area, protect from direct rain and moisture.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53444953571693,"sku":"CDN-0219","price":430.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_15d9a99d-6fb1-44c8-95b4-499553b5f476.jpg?v=1781512306"},{"product_id":"ceiling-mount-pir-motion-sensor-220v-infrared-occupancy-detector-switch","title":"Ceiling Mount PIR Motion Sensor 220V – Infrared Occupancy Detector Switch","description":"\u003ch1\u003eCeiling Mount PIR Motion Sensor 220V – Infrared Occupancy Detector Switch\u003c\/h1\u003e\u003cp\u003eThis ceiling mount PIR motion sensor is a 220V AC infrared occupancy detector designed to automatically switch lights on when motion is detected and off after a set delay. Ideal for hallways, staircases, bathrooms, and office spaces, it reduces energy waste by ensuring lights are only on when needed. The 360° detection lens and adjustable timer provide reliable, hands-free lighting control.\u003c\/p\u003e\u003ch2\u003eKey Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e220V AC, 50\/60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDetection Method\u003c\/td\u003e\n\u003ctd\u003ePassive Infrared (PIR)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDetection Range\u003c\/td\u003e\n\u003ctd\u003eUp to 6 m diameter (at 2.5–4 m height)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDetection Angle\u003c\/td\u003e\n\u003ctd\u003e360° (ceiling mount)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTime Delay Adjustment\u003c\/td\u003e\n\u003ctd\u003e10 sec to 7 min (adjustable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLoad Capacity\u003c\/td\u003e\n\u003ctd\u003e500W incandescent, 200W LED\/CFL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eAutomatic hallway or staircase lighting that activates when someone enters\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kit-smart-bathroom-ventilation\"\u003eEnergy-saving bathroom ventilation fan control tied to occupancy\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003eSecurity floodlight triggered by motion in covered areas\u003c\/li\u003e\n\u003cli\u003eSmart office lighting that turns off when rooms are vacant\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility\u003c\/h2\u003e\u003cp\u003eThis sensor works directly with standard 220V AC lighting loads including incandescent bulbs, LEDs, and CFLs within the rated capacity. It fits into a standard ceiling cutout and is compatible with typical Indian junction boxes. For DC electronics projects, use a low-voltage PIR module; this unit switches mains power only.\u003c\/p\u003e\u003ch2\u003eWiring Notes\u003c\/h2\u003e\u003cp\u003eConnect live and neutral to the input terminals as marked; the output switches the live wire to the load. Ensure total load does not exceed the rated capacity. Install at a height of 2.5–4 metres for optimal coverage, avoiding direct placement above heat sources or moving air.\u003c\/p\u003e\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino or Raspberry Pi?\u003c\/summary\u003e\u003cp\u003eNo, this is a mains-voltage device that directly switches 220V AC loads. For low-voltage controller projects, use a dedicated 5V\/3.3V PIR sensor module.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan I use it with LED bulbs?\u003c\/summary\u003e\u003cp\u003eYes, it works with LED bulbs up to a combined 200W. Ensure the driver circuitry meets the minimum load requirement (usually no issue) and that the total wattage is within limits.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat is the detection pattern and range?\u003c\/summary\u003e\u003cp\u003eWhen ceiling mounted, it detects motion in a full 360° circle with a radius of up to 3 m (6 m diameter) at the recommended 2.5–4 m installation height, using overlapping PIR zones.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53444953604461,"sku":"CDN-0221","price":810.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_2dff89fa-44dd-4252-ad9b-2470c8cf2404.jpg?v=1781512308"},{"product_id":"zmct103c-10a-ac-current-transformer-sensor-compoden","title":"ZMCT103C 10A AC Current Transformer Sensor | Compoden","description":"\u003ch1\u003eZMCT103C 10A AC Current Transformer Sensor\u003c\/h1\u003e\n\n\u003cp\u003eThe ZMCT103C is a non-invasive AC current transformer capable of measuring up to 10A. It outputs a proportional AC voltage via a built-in burden resistor, making it easy to interface with microcontrollers. Ideal for energy monitoring, smart power meters, and overcurrent protection systems.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eZMCT103C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eInput Current Range\u003c\/td\u003e\n\u003ctd\u003e0–10A AC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTurns Ratio\u003c\/td\u003e\n\u003ctd\u003e1000:1\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003eAC voltage (proportional to current)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eBurden Resistor\u003c\/td\u003e\n\u003ctd\u003eBuilt-in (typically 62Ω)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOperating Frequency\u003c\/td\u003e\n\u003ctd\u003e50–60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/smart-energy-monitor-kit-build-a-classroom-power-logger-with-arduino\"\u003eDIY home energy monitor with Arduino and an LCD display\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003eOvercurrent protection relay for appliances using an ESP32\u003c\/li\u003e\n  \u003cli\u003eSmart plug that logs power consumption to the cloud via Wi-Fi\u003c\/li\u003e\n  \u003cli\u003eLaboratory AC current meter with a microcontroller and OLED screen\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThe ZMCT103C works with any microcontroller that has an analog input, including Arduino Uno, Mega, ESP8266, ESP32, and STM32. Its output voltage is within 0–1V AC for the rated current, so an ADC with at least 10-bit resolution is recommended. For 3.3V boards, use a voltage divider or select a suitable burden resistor if adjustable.\u003c\/p\u003e\n\n\u003ch2\u003eWiring Notes\u003c\/h2\u003e\n\u003cp\u003eConnect the output pin to an analog input; the transformer provides an AC signal centered around 0V. To measure with a single-ended ADC, bias the signal to mid-supply using a resistor divider or an op-amp circuit. No external power supply is needed for the sensor itself.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\n\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\n\n\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino Uno?\u003c\/summary\u003e\u003cp\u003eYes, the ZMCT103C connects directly to any analog pin on the Arduino Uno. Use analogRead() and apply calibration to convert to current. Make sure to bias the signal for accurate RMS measurement if needed.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan I measure DC current with this?\u003c\/summary\u003e\u003cp\u003eNo, this is an AC current transformer and only works with alternating current. For DC current, consider a Hall effect sensor like the ACS712.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDoes it require an external burden resistor?\u003c\/summary\u003e\u003cp\u003eNo, the ZMCT103C module includes a built-in burden resistor (usually 62Ω), so you can connect it directly to your ADC. If you need a different output range, you can modify the onboard resistor.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53444953702765,"sku":"CDN-0225","price":60.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_332b714f-b79c-4c83-bfd0-f369b697e371.jpg?v=1781512315"},{"product_id":"infrared-waterproof-beam-sensor-single-beam-20m-range","title":"Infrared Waterproof Beam Sensor – Single Beam, 20m Range","description":"\u003ch1\u003eInfrared Waterproof Beam Sensor – Single Beam, 20m Detection Range\u003c\/h1\u003e\u003cp\u003eThe Single Infrared Waterproof Beam Sensor is an active infrared detector designed for outdoor perimeter protection, gate automation, and object detection. It consists of a paired transmitter and receiver that create an invisible infrared beam; when the beam is interrupted, the output relay triggers. Its IP65-rated waterproof housing ensures reliable operation in rain, dust, and harsh sunlight, making it a durable choice for Indian outdoor conditions.\u003c\/p\u003e\u003ch2\u003eKey Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eDetection Range\u003c\/td\u003e\n\u003ctd\u003e20 meters (outdoor)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e12-24V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003eRelay (NO\/NC dry contact)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResponse Time\u003c\/td\u003e\n\u003ctd\u003e≤10ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWaterproof Rating\u003c\/td\u003e\n\u003ctd\u003eIP65\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Draw\u003c\/td\u003e\n\u003ctd\u003e≤50mA per unit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eAutomatic gate opener safety edge alternative\u003c\/li\u003e\n\u003cli\u003eIntruder alert for boundary walls or fences\u003c\/li\u003e\n\u003cli\u003eVisitor counter for event entry points\u003c\/li\u003e\n\u003cli\u003eGarage vehicle detection for automated lighting\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility\u003c\/h2\u003e\u003cp\u003eWith its relay output (dry contact), this sensor works with any microcontroller capable of reading a digital input, including Arduino, Raspberry Pi, ESP32, and STM32 boards. It can also interface directly with PLCs or traditional alarm panels that accept 12-24V DC triggers. The relay supports up to 1A at 30V DC, so it can switch small loads directly.\u003c\/p\u003e\u003ch2\u003eWiring Notes\u003c\/h2\u003e\u003cp\u003eThe transmitter and receiver each have a simple 4-wire cable: red (12-24V+), black (ground), green (relay common), and white (relay normally open or normally closed). For a secure trigger, connect green and white to your input with an external pull-up resistor if using a 3.3V logic board. Ensure both units share a common ground for reference.\u003c\/p\u003e\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino?\u003c\/summary\u003e\u003cp\u003eYes, the relay output can be connected directly to any Arduino digital input pin using a pull-up resistor. When the beam is interrupted, the relay toggles and the pin state changes.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan it operate accurately in heavy rain?\u003c\/summary\u003e\u003cp\u003eYes, the IP65 waterproof housing is designed for outdoor use in rain. The infrared beam is modulated and filtered to reduce false triggers from rain or fog, though range may slightly reduce in extreme downpours.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat is the maximum functional distance between emitter and receiver?\u003c\/summary\u003e\u003cp\u003eThe sensor reliably detects interruptions up to 20 meters in clear outdoor conditions. For indoor use, the range may extend slightly further, but alignment must be precise.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53444953735533,"sku":"CDN-0227","price":540.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_74e42def-47c5-4663-9f6b-6a3e51505804.jpg?v=1781512317"},{"product_id":"vl53l1x-tof-distance-sensor-4m-range-i2c","title":"VL53L1X ToF Distance Sensor - 4m Range, I2C","description":"\u003ch1\u003eVL53L1X Time-of-Flight Distance Sensor — 4m Range, I2C Interface\u003c\/h1\u003e\n\n\u003cp\u003eThe VL53L1X is a high-accuracy time-of-flight (ToF) laser-ranging sensor capable of measuring distances up to 4 meters. It is ideal for obstacle avoidance, gesture recognition, and robotic navigation. The sensor’s compact design and I2C interface make it easy to integrate with popular microcontrollers and single-board computers.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMeasurement Range\u003c\/td\u003e\n\u003ctd\u003e4 cm to 400 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e1 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eField of View\u003c\/td\u003e\n\u003ctd\u003e27°\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd\u003e2.6 V – 3.5 V\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eInterface\u003c\/td\u003e\n\u003ctd\u003eI2C (up to 400 kHz)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/arduino-obstacle-avoidance-robot-kit-build-and-code-autonomous-car\"\u003eAutonomous robot obstacle avoidance system\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003eTouchless gesture-controlled light switch\u003c\/li\u003e\n  \u003cli\u003eLiquid level monitoring in tanks\u003c\/li\u003e\n  \u003cli\u003eDrone precision altitude hold and terrain following\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThe VL53L1X operates at 3.3V logic but is 5V tolerant on I2C pins, making it safe for direct connection to Arduino Uno, Mega, ESP32, Raspberry Pi, and STM32 boards. It’s frequently used with motor drivers and servos in robotic applications.\u003c\/p\u003e\n\n\u003ch2\u003eWiring Notes\u003c\/h2\u003e\n\u003cp\u003eConnect VIN to 3.3V, GND to ground, SDA to A4 (or ESP32 GPIO 21), and SCL to A5 (or ESP32 GPIO 22). The breakout board includes built-in 4.7kΩ pull-up resistors on I2C lines, so no external pull-ups are needed. Default I2C address is 0x29, configurable to 0x30.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\n\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\n\n\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino Uno?\u003c\/summary\u003e\u003cp\u003eYes, the VL53L1X works with Arduino Uno over I2C. Use the SparkFun VL53L1X library for easy integration.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan it measure through glass?\u003c\/summary\u003e\u003cp\u003eThe sensor uses 940nm laser light which can pass through glass, but reflections may affect accuracy. For best results, use clean, thin glass perpendicular to the sensor.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is the maximum sample rate?\u003c\/summary\u003e\u003cp\u003eIn short-range mode, the sensor can achieve up to 50 Hz sample rate. Long-range mode is slower, typically 10–20 Hz, depending on ambient light conditions.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53444953801069,"sku":"CDN-0226","price":580.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_4c34b178-8e0c-487a-994e-dc44a5022aaa.jpg?v=1781512319"},{"product_id":"bf350-high-precision-strain-gauge-pressure-sensor-module","title":"BF350 High Precision Strain Gauge Pressure Sensor Module","description":"\u003ch1\u003eBF350 350 Ohm High Precision Resistance Strain Gauge Pressure Sensor Module\u003c\/h1\u003e\n\n\u003cp\u003eThe BF350 is a high-precision resistive strain gauge sensor module designed for measuring minute deformations in materials. When bonded to a surface, its 350-ohm resistance changes proportionally to applied strain, making it ideal for building custom pressure sensors, load cells, and force measurement systems. With a gauge factor of 2.0, it offers reliable performance for engineering and DIY projects.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSensor Type\u003c\/td\u003e\n\u003ctd\u003eResistive strain gauge\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eResistance\u003c\/td\u003e\n\u003ctd\u003e350 Ω ±0.1%\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eGauge Factor\u003c\/td\u003e\n\u003ctd\u003e2.0 ±1%\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eGrid Material\u003c\/td\u003e\n\u003ctd\u003eConstantan\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eBacking Material\u003c\/td\u003e\n\u003ctd\u003eModified phenolic\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTemperature Range\u003c\/td\u003e\n\u003ctd\u003e-30°C to +80°C\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/kit-digital-kitchen-scale-kit-with-arduino-uno-plus-stepper-motor\"\u003eDIY digital kitchen scale using an HX711 amplifier and Arduino\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003eCustom load cell for small robotic grippers\u003c\/li\u003e\n  \u003cli\u003ePressure-sensitive mat for occupancy detection\u003c\/li\u003e\n  \u003cli\u003eMaterial stress analysis jig for engineering labs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis strain gauge works with any microcontroller capable of reading a Wheatstone bridge, typically via an external ADC like the HX711 module. Common pairings include Arduino Uno, ESP32, and Raspberry Pi Pico. For best results, use a 5V excitation and a differential amplifier with at least 24-bit resolution to detect minute resistance changes.\u003c\/p\u003e\n\n\u003ch2\u003eWiring Notes\u003c\/h2\u003e\n\u003cp\u003eConnect the strain gauge in a quarter-bridge configuration with three fixed resistors (e.g., 350 Ω each) to form a Wheatstone bridge. Use shielded, short leads to minimize noise. The signal output is in millivolts; an amplifier like HX711 is necessary before feeding into a microcontroller's ADC.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\n\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\n\n\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino?\u003c\/summary\u003e\u003cp\u003eYes, when used with a suitable amplifier module like HX711, it easily interfaces with Arduino boards for data acquisition.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow do I attach it to a surface?\u003c\/summary\u003e\u003cp\u003eUse cyanoacrylate adhesive (super glue) to bond the gauge firmly to a clean, degreased metal or composite surface. Follow proper strain gauge installation techniques for accurate readings.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan I measure pressure directly with this sensor?\u003c\/summary\u003e\u003cp\u003eThis sensor measures strain; to measure pressure, attach it to a diaphragm or structure that deforms under pressure. Calibration will be required.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53444953833837,"sku":"CDN-0230","price":40.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_d28890f9-59c2-4598-8384-3211e12943d8.jpg?v=1781512320"},{"product_id":"aht21b-temperature-humidity-sensor-module-i2c-high-accuracy","title":"AHT21B Temperature Humidity Sensor Module - I2C High Accuracy","description":"\u003ch1\u003eAHT21B Temperature and Humidity Sensor Module – I2C Interface, ±2% RH Accuracy\u003c\/h1\u003e\n\n\u003cp\u003eThe AHT21B is a digital temperature and humidity sensor module using the I2C protocol. It delivers accurate measurements with a typical accuracy of ±2% RH for humidity and ±0.3°C for temperature. Designed for low-power applications, this sensor is ideal for environmental monitoring, weather stations, and IoT data logging.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd\u003e1.8V – 3.6V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eHumidity Range\u003c\/td\u003e\n\u003ctd\u003e0% to 100% RH\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTemperature Range\u003c\/td\u003e\n\u003ctd\u003e-40°C to +85°C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eHumidity Accuracy\u003c\/td\u003e\n\u003ctd\u003e±2% RH (typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTemperature Accuracy\u003c\/td\u003e\n\u003ctd\u003e±0.3°C (typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eInterface\u003c\/td\u003e\n\u003ctd\u003eI2C (address 0x38)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/kit-animated-weather-station-display\"\u003eIndoor weather station with real-time display\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/kit-greenhouse-climate-monitor-kit-with-arduino-uno-plus-sensors\"\u003eGreenhouse or terrarium climate monitor\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003eIncubator or mushroom farm humidity controller\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/kit-server-room-temperature-monitor-kit-v4\"\u003eServer room temperature and humidity alert system\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis module works with any microcontroller supporting I2C, such as Arduino Uno, Nano, ESP32, ESP8266, and Raspberry Pi. The AHT21B operates at 1.8V–3.6V, making it directly compatible with 3.3V boards. For 5V systems like Arduino Uno, a logic level converter is recommended to avoid damage, though many users report success with direct I2C connection due to the sensor's 5V-tolerant pins.\u003c\/p\u003e\n\n\u003ch2\u003eWiring Notes\u003c\/h2\u003e\n\u003cp\u003eConnect VCC to 3.3V, GND to ground, SDA to the I2C data line (A4 on Arduino Uno), and SCL to the I2C clock line (A5 on Uno). The module includes built-in pull-up resistors, so external resistors are not required. Keep wires short and avoid noise sources for stable readings.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\n\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\n\n\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino?\u003c\/summary\u003e\u003cp\u003eYes, the AHT21B uses I2C and works with Arduino boards. Use the AHTxx library for easy interfacing. For 5V Arduinos, a level shifter is advised but often not essential due to 5V-tolerant pins.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is the sampling rate?\u003c\/summary\u003e\u003cp\u003eThe sensor provides a new reading approximately every 2 seconds (0.5 Hz). It is not suitable for high-speed applications but perfect for periodic environmental logging.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan it be used outdoors?\u003c\/summary\u003e\u003cp\u003eThe bare module is not waterproof. For outdoor use, house it inside a weather-proof enclosure with a breathable membrane to allow humidity sensing while protecting from direct moisture and dust.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53444953866605,"sku":"CDN-0232","price":110.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/download_b0007f1a-33a6-4363-8fae-5eb4e0a1bc06.jpg?v=1781591509"},{"product_id":"anti-corrosion-rated-water-level-sensor-with-ball-float-switch","title":"Anti-Corrosion Rated Water Level Sensor with Ball Float Switch","description":"\u003ch1\u003eAnti-Corrosion Rated Water Level Sensor with Ball Float Switch\u003c\/h1\u003e\n\n\u003cp\u003eThis water level sensor uses a ball float switch mechanism to detect liquid levels. Designed with corrosion-resistant contacts, it is ideal for water tanks, sumps, and industrial liquid containers. It provides reliable on\/off switching for automatic pump control or level alarms.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eContact Rating\u003c\/td\u003e\n\u003ctd\u003e10W \/ 50W max\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMax Switching Current\u003c\/td\u003e\n\u003ctd\u003e0.5A\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMax Switching Voltage\u003c\/td\u003e\n\u003ctd\u003e100V AC \/ DC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e0°C to 60°C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eBody Material\u003c\/td\u003e\n\u003ctd\u003eCorrosion-resistant PP plastic\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCable Length\u003c\/td\u003e\n\u003ctd\u003e1 meter (customizable)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/kit-water-tank-level-monitor-kit-v2\"\u003eAutomatic overhead tank water level controller with pump cutoff\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003eSump pump control to prevent dry run or overflow\u003c\/li\u003e\n  \u003cli\u003eLiquid level alarm system using a buzzer and microcontroller\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/kit-automatic-plant-watering-system\"\u003eDIY automatic pet water dispenser or plant watering system\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis float switch works with any microcontroller including Arduino, ESP8266, ESP32, and Raspberry Pi. Use a digital input pin with internal pull-up to detect the switch state. It is compatible with both 5V and 3.3V logic boards when configured correctly.\u003c\/p\u003e\n\n\u003ch2\u003eWiring Notes\u003c\/h2\u003e\n\u003cp\u003eConnect one wire to a digital I\/O pin with an internal pull-up resistor enabled, and the other to ground. When liquid level rises, the internal reed switch closes, pulling the pin low. Avoid switching high inductive loads directly; use a relay module for pump control.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\n\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\n\n\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino?\u003c\/summary\u003e\u003cp\u003eYes, connect the float switch to any digital pin with internal pull-up enabled. It acts as a simple switch, giving a HIGH\/LOW signal for water level detection.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow does the anti-corrosion feature work?\u003c\/summary\u003e\u003cp\u003eThe anti-corrosion rating comes from the sealed reed switch and corrosion-resistant PP plastic body, preventing rust and ensuring long life in water.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is the maximum current this switch can handle?\u003c\/summary\u003e\u003cp\u003eThe switch can handle up to 0.5A of current. For higher loads, use a relay to control the pump or device.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53444953899373,"sku":"CDN-0231","price":140.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_7d451a20-f36f-4a7f-af5e-6c041bd90366.jpg?v=1781512323"},{"product_id":"aht25-temperature-humidity-sensor-i-c-digital-output","title":"AHT25 Temperature Humidity Sensor — I²C Digital Output","description":"\u003ch1\u003eAHT25 Integrated Temperature and Humidity Sensor — High Accuracy I²C Digital Output\u003c\/h1\u003e\u003cp\u003eThe AHT25 is a compact, calibrated digital temperature and humidity sensor with an I²C interface. It delivers accurate environmental data for IoT, weather stations, and automation projects. Its fully molded package and low power consumption make it reliable for battery-powered applications.\u003c\/p\u003e\u003ch2\u003eKey Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd\u003e1.8 V to 3.6 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Consumption\u003c\/td\u003e\n\u003ctd\u003e0.25 µA (sleep), 0.98 mA (measuring)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHumidity Range \/ Accuracy\u003c\/td\u003e\n\u003ctd\u003e0–100% RH; ±2% RH (typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Range \/ Accuracy\u003c\/td\u003e\n\u003ctd\u003e-40°C to +85°C; ±0.3°C (typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterface\u003c\/td\u003e\n\u003ctd\u003eI²C, up to 1 MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage Dimensions\u003c\/td\u003e\n\u003ctd\u003e3.0 mm × 3.0 mm × 1.0 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kit-indoor-weather-station\"\u003eA local weather station that logs data to an SD card or cloud dashboard.\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kit-pi-4-automated-greenhouse-controller\"\u003eAn automated greenhouse controller that activates fans or misters based on humidity.\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003eA room climate monitor with an e‑paper display for egg incubators.\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kit-esp32-mqtt-home-sensor-network\"\u003eA smart home sensor node that reports conditions via MQTT over Wi‑Fi.\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility\u003c\/h2\u003e\u003cp\u003eThe sensor operates on 3.3 V logic, making it a direct fit for Arduino boards (Uno, Nano) with a level shifter, and fully compatible with ESP32, ESP8266, Raspberry Pi Pico, and standard Raspberry Pi single‑board computers. The I²C address is 0x38 (backward‑compatible).\u003c\/p\u003e\u003ch2\u003eWiring Notes\u003c\/h2\u003e\u003cp\u003eConnect SDA and SCL to the corresponding I²C pins on your microcontroller. Add 4.7 kΩ pull‑up resistors to both lines if the board lacks internal pull‑ups. The supply pin must not exceed 3.6 V; typical 3.3 V operation is recommended.\u003c\/p\u003e\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino?\u003c\/summary\u003e\u003cp\u003eYes. It works with any Arduino board running at 3.3 V, such as the Arduino Uno or Nano with an external level shifter. Use the Adafruit AHTx0 library for easy integration.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan I use it outdoors without a protective case?\u003c\/summary\u003e\u003cp\u003eThe sensor is not waterproof. For outdoor use, install it inside a weather shield that allows air flow but blocks direct rain and dust.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat accuracy can I expect compared to a DHT22?\u003c\/summary\u003e\u003cp\u003eThe AHT25 offers tighter accuracy (±0.3°C, ±2% RH) than a typical DHT22 (±0.5°C, ±2-5% RH). It also has a faster response time and lower power draw.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53444953964909,"sku":"CDN-0236","price":130.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/images.jpg?v=1781523411"},{"product_id":"ina219-bi-directional-current-sensor-i2c-module-cjmcu-219","title":"INA219 Bi-Directional Current Sensor I2C Module – CJMCU-219","description":"\u003ch1\u003eCJMCU-219 INA219 I2C Bi-Directional Current and Power Sensor – Zero Drift\u003c\/h1\u003e\u003cp\u003eThe CJMCU-219 is a compact breakout board featuring the INA219 chip, a high-accuracy current and power monitor with I2C interface. It measures bi-directional DC current, voltage, and power with excellent linearity and zero drift, making it ideal for battery-powered projects, power monitoring, and energy tracking. The module operates over a wide voltage range and supports standard I2C communication for seamless integration with microcontrollers.\u003c\/p\u003e\u003ch2\u003eKey Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBus Voltage Range\u003c\/td\u003e\n\u003ctd\u003e0 – 26 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Measurement Range\u003c\/td\u003e\n\u003ctd\u003e±3.2 A (with 0.1 Ω shunt)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e12-bit ADC (0.1 mA current LSB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterface\u003c\/td\u003e\n\u003ctd\u003eI2C (addresses 0x40 – 0x4F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLogic Voltage\u003c\/td\u003e\n\u003ctd\u003e3.3 V \/ 5 V compatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBattery fuel gauge for solar or Li-ion systems\u003c\/li\u003e\n\u003cli\u003eReal-time power consumption monitor for IoT devices\u003c\/li\u003e\n\u003cli\u003eOvercurrent protection circuit for lab supplies\u003c\/li\u003e\n\u003cli\u003eEnergy auditing tool to profile DC load profiles\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility\u003c\/h2\u003e\u003cp\u003eThis module works with any 3.3 V or 5 V microcontroller that supports I2C, including Arduino Uno, Nano, Mega, ESP8266, ESP32, and STM32 platforms. For Raspberry Pi or other 3.3 V-only boards, direct connection is fine—no level shifting required. Common pairings include the Adafruit INA219 library for Arduino or CircuitPython.\u003c\/p\u003e\u003ch2\u003eWiring Notes\u003c\/h2\u003e\u003cp\u003eConnect VCC to 3.3 V or 5 V, GND to ground, SDA and SCL to the corresponding I2C pins. The I2C lines may need external 4.7 kΩ pull-up resistors if your board does not provide them. For current sensing, wire the load in series with the high-side shunt terminals (Vin+ and Vin-) and ensure the common ground is shared.\u003c\/p\u003e\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino?\u003c\/summary\u003e\u003cp\u003eYes, the CJMCU-219 works with standard Arduino libraries like Adafruit INA219. Just connect SDA to A4 and SCL to A5 on Uno boards.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eHow do I measure currents above 3.2 A?\u003c\/summary\u003e\u003cp\u003eReplace the onboard 0.1 Ω shunt with a smaller value (e.g., 0.01 Ω) and adjust the calibration register in software; always ensure power dissipation is within safe limits.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eDoes it measure AC current?\u003c\/summary\u003e\u003cp\u003eNo, this module measures bidirectional DC current. For AC measurement, consider a current transformer or Hall-effect sensor like the ACS712.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53444953997677,"sku":"CDN-0235","price":100.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_23adb65d-e895-4c5c-967c-bc4dc29bf4d7.jpg?v=1781512328"},{"product_id":"impact-collision-switch-sensor-module-vibration-detection","title":"Impact Collision Switch Sensor Module - Vibration Detection","description":"\u003ch1\u003eImpact Collision Switch Sensor Module with Digital Output\u003c\/h1\u003e\u003cp\u003eThis impact collision switch sensor module detects vibration, tilt, or physical impact with high sensitivity. It outputs a clean digital signal when a collision is detected, making it perfect for building interactive projects. The onboard potentiometer allows you to fine-tune the trigger threshold, enabling precise control over what qualifies as an impact event.\u003c\/p\u003e\u003ch2\u003eKey Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e3.3V to 5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003eDigital (High\/Low)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensitivity Adjustment\u003c\/td\u003e\n\u003ctd\u003eYes, via onboard potentiometer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIndicator LED\u003c\/td\u003e\n\u003ctd\u003ePower and signal output LEDs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e32mm x 14mm x 8mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Holes\u003c\/td\u003e\n\u003ctd\u003e2 x M3 holes for secure attachment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kit-arduino-vibration-earthquake-alarm\"\u003eEarthquake or vibration alarm for early warning systems\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003eTap-activated LED lighting or interactive art installations\u003c\/li\u003e\n\u003cli\u003eRobot collision detection to stop or reverse motors upon impact\u003c\/li\u003e\n\u003cli\u003eTilt and shake sensor for gaming controllers or motion-based puzzles\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility\u003c\/h2\u003e\u003cp\u003eThis module works seamlessly with any microcontroller or single-board computer that supports digital inputs, including Arduino Uno, Mega, Nano, ESP8266, ESP32, and Raspberry Pi. The output is 3.3V-tolerant even when powered at 5V, so it is safe for 3.3V logic boards. Common pairings include Arduino for rapid prototyping and Raspberry Pi for IoT vibration monitoring.\u003c\/p\u003e\u003ch2\u003eWiring Notes\u003c\/h2\u003e\u003cp\u003eConnect VCC to 3.3V or 5V, GND to ground, and the DO (digital output) pin to any digital I\/O pin on your microcontroller. The module includes a built-in pull-up resistor, so no external components are required. For best results, mount the sensor firmly to the surface you want to monitor. Adjust the potentiometer clockwise to increase sensitivity until the desired trigger point is reached.\u003c\/p\u003e\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\u003cdetails\u003e\u003csummary\u003eIs this compatible with Raspberry Pi?\u003c\/summary\u003e\u003cp\u003eYes, it is fully compatible with Raspberry Pi. The module works at 3.3V logic levels when powered from the Pi's 3.3V pin, and the digital output is safe to connect directly to a GPIO pin.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan I adjust the sensitivity?\u003c\/summary\u003e\u003cp\u003eYes, the onboard potentiometer lets you set the threshold from a light tap to a harder impact. Clockwise rotation increases sensitivity, making it respond to smaller vibrations.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eDoes it output an analog signal?\u003c\/summary\u003e\u003cp\u003eNo, this module provides only a digital high\/low output. For analog vibration data, consider a piezo vibration sensor with dedicated ADC, but this module is ideal for simple collision detection projects.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53444954292589,"sku":"CDN-0245","price":55.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_28c8389b-8257-49fb-8c69-f86a90216382.jpg?v=1781512341"},{"product_id":"hlk-ld2410-24ghz-human-presence-radar-sensor-module-compoden","title":"HLK-LD2410 24GHz Human Presence Radar Sensor Module | Compoden","description":"\u003ch1\u003eHLK-LD2410 24GHz mmWave Human Presence Radar Sensor Module\u003c\/h1\u003e\n\n\u003cp\u003eThe HLK-LD2410 is a 24GHz mmWave radar sensor module that accurately detects human presence, movement, and stationary status. Ideal for occupancy sensing in smart homes, lighting control, and security systems, it offers a robust alternative to PIR sensors by detecting through non-metallic materials and remaining unaffected by temperature changes.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOperating Frequency\u003c\/td\u003e\n\u003ctd\u003e24GHz - 24.25GHz\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDetection Range\u003c\/td\u003e\n\u003ctd\u003eUp to 8m (adjustable)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDetection Angle\u003c\/td\u003e\n\u003ctd\u003e100° conical field\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCommunication Interfaces\u003c\/td\u003e\n\u003ctd\u003eUART, GPIO, I2C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e3.3V - 5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCurrent Consumption\u003c\/td\u003e\n\u003ctd\u003e~150mA active\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/kit-occupancy-based-lighting\"\u003eSmart occupancy-based lighting control system\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003eElderly fall detection and monitoring solution\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/kit-ai-presence-room-controller\"\u003eConference room presence detector for booking systems\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003eIntelligent air conditioner or fan control based on room occupancy\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eCompatible with 3.3V and 5V microcontrollers including Arduino, ESP32, and Raspberry Pi. Works seamlessly with development boards supporting UART or I2C communication. The module provides both simple binary presence\/absence output and detailed serial data including distance and movement status.\u003c\/p\u003e\n\n\u003ch2\u003eWiring Notes\u003c\/h2\u003e\n\u003cp\u003eConnect VCC to 3.3V-5V, GND to common ground, and RX\/TX for UART communication. Use an external 3.3V level shifter if interfacing with 5V logic systems, though the module pins are 5V tolerant.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\n\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\n\n\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino?\u003c\/summary\u003e\u003cp\u003eYes, connect via UART (RX\/TX) and use the HLK-LD2410 Arduino library for easy integration and data parsing.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan it detect through walls?\u003c\/summary\u003e\u003cp\u003eIt can detect through non-metallic materials like drywall or glass, but detection range may be reduced depending on thickness and material.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is the difference from PIR sensors?\u003c\/summary\u003e\u003cp\u003eUnlike PIR sensors, the HLK-LD2410 detects stationary human presence and provides precise distance data, while remaining unaffected by ambient temperature changes.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53444954358125,"sku":"CDN-0248","price":440.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_4008d06b-ad2c-4fff-9288-f48c80b55a96.jpg?v=1781512346"},{"product_id":"water-turbidity-sensor-with-analog-module-ntu-measurement","title":"Water Turbidity Sensor with Analog Module – NTU Measurement","description":"\u003ch1\u003eWater Turbidity Sensor with Analog Module – NTU Measurement\u003c\/h1\u003e\n\n\u003cp\u003eThis water turbidity sensor provides analog output proportional to suspended solids in water, measuring 0–3000 NTU. It includes an optical probe with emitter and detector, and a signal conditioning module for direct connection to microcontrollers. Ideal for water quality monitoring in tanks, rivers, and industrial processes.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOutput Signal\u003c\/td\u003e\n\u003ctd\u003eAnalog 0–4.5V\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMeasurement Range\u003c\/td\u003e\n\u003ctd\u003e0–3000 NTU\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eResponse Time\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;500 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eProbe Material\u003c\/td\u003e\n\u003ctd\u003eABS plastic, waterproof\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCable Length\u003c\/td\u003e\n\u003ctd\u003e1 meter\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/kit-ai-powered-water-quality-monitor\"\u003eArduino-based water quality monitor with LCD display\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003eAutomatic fish tank turbidity detector and filter controller\u003c\/li\u003e\n  \u003cli\u003eWashing machine rinse water clarity check using ESP32\u003c\/li\u003e\n  \u003cli\u003eRiver pollution level logger with SD card and RTC\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eWorks with any microcontroller accepting 0–5V analog input, including Arduino Uno, Mega, Nano, ESP8266, ESP32, and Raspberry Pi (with external ADC). The module operates at 5V and outputs an analog voltage within the safe range for 5V-tolerant boards.\u003c\/p\u003e\n\n\u003ch2\u003eWiring Notes\u003c\/h2\u003e\n\u003cp\u003eConnect VCC to 5V, GND to ground, and analog OUT to any ADC pin (e.g., A0 on Arduino). Keep the probe area free from air bubbles and direct ambient light for consistent readings. No pull-up resistor is required.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\n\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\n\n\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino?\u003c\/summary\u003e\u003cp\u003eYes, the module outputs 0–4.5V analog signal that can be read directly by Arduino analog pins. Use the 5V supply from the board.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow do I calibrate the sensor?\u003c\/summary\u003e\u003cp\u003ePlace the probe in clean water for a baseline (0 NTU) and note the voltage. Use a solution of known turbidity to establish the scaling factor in your code.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan the probe be fully submerged?\u003c\/summary\u003e\u003cp\u003eThe sensor probe is waterproof and designed for immersion, but the signal module and connections must remain dry. Submerge only the probe portion.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53444954456429,"sku":"CDN-0253","price":550.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_3d932e62-cfad-4728-b5a6-e0ac298eabc3.jpg?v=1781512349"},{"product_id":"apds9960-rgb-and-gesture-sensor-module-i2c-interface","title":"APDS9960 RGB and Gesture Sensor Module – I2C Interface","description":"\u003ch1\u003eAPDS9960 RGB and Gesture Detection Sensor Module with I2C Interface\u003c\/h1\u003e\u003cp\u003eThe APDS9960 is a versatile sensor module capable of RGB color sensing, ambient light measurement, proximity detection, and gesture recognition. It communicates over I2C, making it easy to integrate with microcontrollers like Arduino and Raspberry Pi. Ideal for building touchless interfaces, color sorting machines, and interactive lighting systems.\u003c\/p\u003e\u003ch2\u003eKey Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor Type\u003c\/td\u003e\n\u003ctd\u003eAPDS9960 (RGB, Ambient Light, Proximity, Gesture)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Interface\u003c\/td\u003e\n\u003ctd\u003eI2C (address 0x39)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e2.4V to 3.6V DC (module includes voltage regulator for 5V tolerance)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGesture Detection Range\u003c\/td\u003e\n\u003ctd\u003eUp to 10 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRGB Color Sensing Resolution\u003c\/td\u003e\n\u003ctd\u003e16-bit per channel (R, G, B, Clear)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAmbient Light Sensing Range\u003c\/td\u003e\n\u003ctd\u003e0 – 20,000 lux\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kit-esp32-s3-gesture-controlled-robot\"\u003eGesture-controlled robot or drone\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arduino-color-sorting-kit-tcs3200-servo-machine-for-kids\"\u003eColor sorting machine for M\u0026amp;M's or LEGO bricks\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003eTouchless light switch or lamp dimmer\u003c\/li\u003e\n\u003cli\u003eProximity-activated interactive art installation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility\u003c\/h2\u003e\u003cp\u003eThis module works with any microcontroller or single-board computer that has an I2C interface, including Arduino Uno, Nano, Mega, Raspberry Pi, and ESP32. The on-board voltage regulator allows safe connection to both 3.3V and 5V logic levels. Pair with the Adafruit APDS9960 library for rapid prototyping.\u003c\/p\u003e\u003ch2\u003eWiring Notes\u003c\/h2\u003e\u003cp\u003eConnect VCC to 3.3V (or 5V if using the regulator), GND to GND, SCL to the I2C clock line, and SDA to the data line. Most development boards include built-in pull-up resistors on I2C; if not, add 4.7kΩ resistors from SCL and SDA to VCC.\u003c\/p\u003e\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino?\u003c\/summary\u003e\u003cp\u003eYes, the APDS9960 works with Arduino Uno, Nano, and Mega. Use the popular Adafruit APDS9960 library available in the Arduino Library Manager for quick setup.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan it detect gestures through a glass surface?\u003c\/summary\u003e\u003cp\u003eGesture detection works best with direct line-of-sight. Thin, clear glass may still work, but performance degrades with thicker or tinted materials.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eDoes this module require an external power supply?\u003c\/summary\u003e\u003cp\u003eNo, it is powered directly from the microcontroller's 3.3V or 5V pin, drawing only a few milliamps.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53444954620269,"sku":"CDN-0251","price":270.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_e2eea656-b892-476d-9b19-c2a283947737.jpg?v=1781512356"},{"product_id":"turbidity-sensor-suspended-turbidity-value-detection-module-kit","title":"Turbidity Sensor Suspended Turbidity Value Detection Module Kit","description":"\u003ch1\u003eTurbidity Sensor Suspended Turbidity Value Detection Module Kit\u003c\/h1\u003e\n\n\u003cp\u003eThis turbidity sensor module measures suspended particles in liquids by detecting scattered light. It outputs an analog voltage inversely proportional to turbidity, making it suitable for water quality monitoring in washing machines, dishwashers, aquariums, and environmental projects. The kit includes a waterproof probe and a signal conditioning board for easy integration with microcontrollers.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOutput Signal\u003c\/td\u003e\n\u003ctd\u003eAnalog 0–4.5V\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCurrent Consumption\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;20mA\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eResponse Time\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;500ms\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eProbe Cable Length\u003c\/td\u003e\n\u003ctd\u003eApproximately 60 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMeasuring Range\u003c\/td\u003e\n\u003ctd\u003e0–1000 NTU (approx.)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eAquarium water clarity monitor with real-time alerts\u003c\/li\u003e\n  \u003cli\u003eWashing machine rinse water quality checker\u003c\/li\u003e\n  \u003cli\u003eRiver or lake pollution level logger\u003c\/li\u003e\n  \u003cli\u003eSmart toilet flush water turbidity detector\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis sensor works with any development board that has an analog input, such as Arduino Uno, ESP8266, ESP32, or Raspberry Pi (via external ADC). It operates on 5V logic, making it a direct fit for most Arduino projects. Common pairings include the Arduino Nano for compact builds or the NodeMCU for IoT applications.\u003c\/p\u003e\n\n\u003ch2\u003eWiring Notes\u003c\/h2\u003e\n\u003cp\u003eConnect VCC to 5V, GND to ground, and the analog output (OUT) to an ADC pin. The output voltage drops as turbidity increases—clean water yields around 4.5V, while heavily turbid water gives near 0V. Calibration with a known standard (e.g., 0 NTU distilled water) is required for absolute measurements.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\n\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\n\n\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino?\u003c\/summary\u003e\u003cp\u003eYes, it connects directly to any 5V Arduino board. Use an analog pin like A0 and read the voltage with analogRead().\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow do I convert the analog reading to NTU?\u003c\/summary\u003e\u003cp\u003eThe output is non-linear. You must calibrate the sensor using two reference samples (e.g., 0 NTU and a known turbidity standard) and fit a curve to map voltage to NTU values.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat maintenance does the probe require?\u003c\/summary\u003e\u003cp\u003eKeep the optical window clean; fouling will distort readings. Rinse with distilled water after use and avoid scratching the surface.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53444954653037,"sku":"CDN-0252","price":900.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_c5d1627c-6c44-4939-8f31-fb8b443658de.jpg?v=1781512357"},{"product_id":"5v-dc-flame-detection-sensor-relay-switch-module-with-adjustable-sensitivity","title":"5V DC Flame Detection Sensor Relay Switch Module with Adjustable Sensitivity","description":"\u003ch1\u003e5V DC Flame Detection Sensor Relay Switch Module with Adjustable Sensitivity\u003c\/h1\u003e\u003cp\u003eThe 5V DC Flame Detection Sensor Relay Switch Module uses an infrared receiver to detect flame wavelengths (760-1100 nm) and triggers a relay switch for high-current control. It is ideal for fire alarm systems, robotics, and industrial safety automation. With adjustable sensitivity, it responds reliably to small flames from candles to large burners.\u003c\/p\u003e\u003ch2\u003eKey Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDetection Angle\u003c\/td\u003e\n\u003ctd\u003e60°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDetection Spectrum\u003c\/td\u003e\n\u003ctd\u003e760 nm - 1100 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003eRelay (NO, NC, COM)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eComparator IC\u003c\/td\u003e\n\u003ctd\u003eLM393\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensitivity Adjustment\u003c\/td\u003e\n\u003ctd\u003eOn-board potentiometer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arduino-gsm-sms-kit-build-an-iot-button-that-sends-messages\"\u003eAutomatic fire alarm system with SMS alerts using GSM module\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003eFlame-seeking robot for firefighting competitions\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/esp32-home-assistant-kit-control-4-relays-and-6-sensors\"\u003eSmart home fire detection integrated with Home Assistant\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/esp32-industrial-relay-control-kit\"\u003eIndustrial burner monitor with relay-triggered shutdown\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility\u003c\/h2\u003e\u003cp\u003eWorks with any 5V microcontroller including Arduino Uno, Mega, Nano, ESP8266, ESP32, and Raspberry Pi (with level shifting). The digital output connects directly to a GPIO pin, and the relay can switch high-current loads up to 10A at 250V AC. Common pairings include buzzer modules, water pumps, and solenoid valves for automated response.\u003c\/p\u003e\u003ch2\u003eWiring Notes\u003c\/h2\u003e\u003cp\u003eConnect VCC to 5V, GND to ground, and the DO pin to a digital input on your microcontroller. The relay contacts (NO, COM) handle the load circuit. Ensure flame exposure does not exceed the sensor's temperature limit; keep plastic housing away from direct flame. Use a pull-up resistor if interfacing with 3.3V systems.\u003c\/p\u003e\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino Uno?\u003c\/summary\u003e\u003cp\u003eYes, the module's digital output connects directly to any Arduino Uno digital pin. Use a 5V supply from the Arduino to power the sensor.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eHow far can it detect a candle flame?\u003c\/summary\u003e\u003cp\u003eWith sensitivity at maximum, the sensor can detect a standard candle flame from about 80-100 cm away. Range decreases for smaller or shielded flames.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan the relay switch 230V AC loads?\u003c\/summary\u003e\u003cp\u003eYes, the relay is rated for up to 10A at 250V AC. Ensure proper insulation and adhere to electrical safety standards when switching mains voltage.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53444954685805,"sku":"CDN-0257","price":140.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_03829ba0-b0e3-480c-a8d9-634bcd964f63.jpg?v=1781512358"},{"product_id":"zht103-5a-single-phase-ac-current-sensor-module-compoden","title":"ZHT103 5A Single-Phase AC Current Sensor Module | Compoden","description":"\u003ch1\u003eZHT103 5A Single-Phase AC Current Sensor Module — Analog Output\u003c\/h1\u003e\n\u003cp\u003eThe ZHT103 is a compact AC current sensor module designed to measure alternating current up to 5 amps in single-phase circuits. It outputs an analog voltage proportional to the measured current, making it easy to interface with microcontrollers like Arduino or ESP32 for power monitoring, energy auditing, or motor control feedback systems. With built-in isolation, it provides a safe and non-invasive way to track current without direct contact.\u003c\/p\u003e\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasurement Range\u003c\/td\u003e\n\u003ctd\u003e0 to 5A AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003eAnalog Voltage (0–1V RMS proportional)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensitivity\u003c\/td\u003e\n\u003ctd\u003e185 mV\/A (typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd\u003e5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Range\u003c\/td\u003e\n\u003ctd\u003e50Hz \/ 60Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccuracy\u003c\/td\u003e\n\u003ctd\u003e±1% (at rated current)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/smart-energy-monitor-kit-build-a-classroom-power-logger-with-arduino\"\u003eDIY home energy monitor to track appliance power consumption.\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003eOvercurrent protection circuit for motors or power supplies.\u003c\/li\u003e\n\u003cli\u003eSmart irrigation system with pump current sensing.\u003c\/li\u003e\n\u003cli\u003eReal-time electricity usage logger with IoT dashboard.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis module works with any microcontroller that has an analog-to-digital converter (ADC), such as Arduino Uno, Nano, ESP8266, ESP32, or Raspberry Pi Pico. It requires a 5V supply and outputs a voltage within 0–1V RMS, which can be read directly via ADC; for 3.3V systems, a level shifter may be needed. Commonly paired with relay modules for full control and monitoring of AC loads.\u003c\/p\u003e\n\u003ch2\u003eWiring Notes\u003c\/h2\u003e\n\u003cp\u003eConnect the sensor’s VCC to 5V, GND to ground, and the analog output (OUT) to an ADC pin. Since the output is AC, you’ll need to sample it rapidly and calculate RMS in software; no external pull-ups are required. Ensure the measured current does not exceed 5A to avoid saturation.\u003c\/p\u003e\n\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\n\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino?\u003c\/summary\u003e\u003cp\u003eYes, connect the analog output to any Arduino ADC pin and use a 5V supply. Sample the AC waveform to calculate RMS current.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan it measure DC current?\u003c\/summary\u003e\u003cp\u003eNo, this sensor is designed for AC only (50\/60 Hz). For DC current measurement, consider a hall-effect sensor like the ACS712.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDo I need any external components?\u003c\/summary\u003e\u003cp\u003eNo additional components are required; the module is ready to use. Just connect power, ground, and signal to your microcontroller.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53444955111789,"sku":"CDN-0260","price":65.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_ac1ed28f-9247-4e89-b779-448e6aa0bd6d.jpg?v=1781512361"},{"product_id":"ntc-thermistor-temperature-sensor-module-3-pin-10kω","title":"NTC Thermistor Temperature Sensor Module - 3 Pin, 10kΩ","description":"\u003ch1\u003eNTC Thermistor Temperature Sensor Module - 3 Pin, 10kΩ at 25°C\u003c\/h1\u003e\n\n\u003cp\u003eThis NTC thermistor temperature sensor module provides an analog voltage output proportional to ambient temperature. It uses a 10kΩ NTC thermistor in a voltage divider circuit, offering reliable measurement from -55°C to 125°C. Ideal for environmental monitoring, thermal protection, and DIY automation projects.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTemperature Range\u003c\/td\u003e\n\u003ctd\u003e-55°C to 125°C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eResistance at 25°C\u003c\/td\u003e\n\u003ctd\u003e10kΩ\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOutput\u003c\/td\u003e\n\u003ctd\u003eAnalog voltage (VOUT)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eAccuracy\u003c\/td\u003e\n\u003ctd\u003e±0.5°C (typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePin Count\u003c\/td\u003e\n\u003ctd\u003e3 (VCC, GND, AOUT)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/kit-digital-thermometer-on-lcd\"\u003eDIY digital thermometer with LCD or OLED display\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/kit-fan-temperature-controller\"\u003eAutomatic fan or cooler trigger based on temperature threshold\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/kit-server-room-temperature-monitor-kit-v4\"\u003eIoT room temperature monitor using ESP8266 and cloud dashboard\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003eOverheat protection circuit for 3D printers, motors, or battery packs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis module works with any microcontroller that has an analog-to-digital converter (ADC). Popular choices include Arduino Uno, Nano, ESP8266, ESP32, and Raspberry Pi (with an external ADC like MCP3008). The operating voltage is 5V, making it directly compatible with 5V systems. For 3.3V ADCs, use a voltage divider or level shifter on the analog output.\u003c\/p\u003e\n\n\u003ch2\u003eWiring Notes\u003c\/h2\u003e\n\u003cp\u003eConnect VCC to 5V, GND to ground, and AOUT to any analog pin (e.g., A0 on Arduino). No external pull-up resistor is needed; the module includes a built-in voltage divider. Keep sensor leads short to minimize noise interference.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\n\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\n\n\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino?\u003c\/summary\u003e\u003cp\u003eYes, it works directly with Arduino boards. Connect AOUT to an analog input pin and read the voltage using analogRead(). The module operates at 5V, which is ideal for Arduino's 5V ADC.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow accurate is the temperature reading?\u003c\/summary\u003e\u003cp\u003eTypical accuracy is ±0.5°C over the full range. For improved precision, calibrate with a known reference temperature and adjust the conversion formula in your code.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan I extend the sensor wires?\u003c\/summary\u003e\u003cp\u003eYes, but avoid lengths beyond 30cm due to noise pickup. If extension is necessary, use shielded cable and add a 0.1µF ceramic capacitor near the module's AOUT pin to filter high-frequency noise.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53444955275629,"sku":"CDN-0266","price":40.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_3551b2d2-dbe7-49f8-bc05-367972671122.jpg?v=1781512364"},{"product_id":"sharp-gp2y0a02-f-23-distance-sensor-20-150cm-analog-output","title":"Sharp GP2Y0A02 F 23 Distance Sensor 20-150cm Analog Output","description":"\u003ch1\u003eSharp GP2Y0A02 F 23 – 20-150 cm Infrared Distance Sensor\u003c\/h1\u003e\u003cp\u003eThe Sharp GP2Y0A02 F 23 is an infrared proximity sensor that uses triangulation to measure distances from 20 cm to 150 cm with high reliability. It outputs an analog voltage that corresponds to the detected distance, allowing direct connection to microcontrollers with ADC for digital distance computations. This sensor is widely used in robotics for obstacle avoidance, in automation for object detection, and in industrial systems for non-contact measurement.\u003c\/p\u003e\u003ch2\u003eKey Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasuring Range\u003c\/td\u003e\n\u003ctd\u003e20 cm – 150 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003eAnalog Voltage (0.4V – 2.65V typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd\u003e4.5V – 5.5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Consumption\u003c\/td\u003e\n\u003ctd\u003e33 mA (typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResponse Time\u003c\/td\u003e\n\u003ctd\u003eApprox. 50 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterface\u003c\/td\u003e\n\u003ctd\u003eAnalog output, requires external ADC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kit-obstacle-avoiding-robot\"\u003eObstacle-avoiding robot with precise distance thresholds\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kit-automatic-soap-dispenser\"\u003eAutomatic hand sanitizer or soap dispenser\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/esp32-parking-sensor-kit-build-a-4-slot-occupancy-dashboard\"\u003eCar parking sensor system with LED indicators\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003eNon-contact height measurement tool for automated sorting\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility\u003c\/h2\u003e\u003cp\u003eThis sensor works with any 5V microcontroller that has an analog input, such as Arduino Uno, Nano, or Mega. It can also interface with 3.3V boards like ESP32 or Raspberry Pi Pico by using a voltage divider for the output signal. The analog output makes it easy to integrate with existing code libraries for distance calculation.\u003c\/p\u003e\u003ch2\u003eWiring Notes\u003c\/h2\u003e\u003cp\u003eConnect VCC to 5V, GND to ground, and the output pin directly to an analog input. Keep wires short and avoid routing near noisy components like motors. A 10 µF capacitor across VCC and GND near the sensor reduces measurement jitter.\u003c\/p\u003e\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino?\u003c\/summary\u003e\u003cp\u003eYes, connect the sensor's output to any analog pin on Arduino and use the analogRead() function to obtain a value proportional to distance.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eHow accurate are the distance readings?\u003c\/summary\u003e\u003cp\u003eAccuracy is typically within a few centimeters, depending on ambient light and object reflectivity. White, matte surfaces yield the best results.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan it be used outdoors in sunlight?\u003c\/summary\u003e\u003cp\u003eThe sensor may give unreliable readings in direct sunlight because of infrared interference. It is best used indoors or in shaded environments.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53444955406701,"sku":"CDN-0270","price":470.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_611e5d6b-2509-4088-8b53-36316d2c4a69.jpg?v=1781512371"},{"product_id":"bme680-sensor-module-temp-humidity-pressure-gas-i2cspi","title":"BME680 Sensor Module - Temp Humidity Pressure Gas, I2C\/SPI","description":"\u003ch1\u003eBME680 Digital Temperature Humidity Pressure and Gas Sensor Module\u003c\/h1\u003e\n\n\u003cp\u003eThe BME680 is an integrated environmental sensor from Bosch that combines temperature, humidity, barometric pressure, and volatile organic compound (VOC) gas sensing in a single compact module. It communicates via I2C or SPI, making it suitable for indoor air quality monitoring, weather stations, and altitude tracking projects. With ultra-low power consumption, it's ideal for battery-operated or IoT devices.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSensor Chip\u003c\/td\u003e\n\u003ctd\u003eBosch BME680\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eInterface\u003c\/td\u003e\n\u003ctd\u003eI2C (up to 3.4 MHz) or SPI\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e3.3V (pin tolerance 1.8–3.6V)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTemperature Range\u003c\/td\u003e\n\u003ctd\u003e-40°C to +85°C (±1°C accuracy)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eHumidity Accuracy\u003c\/td\u003e\n\u003ctd\u003e±3% relative humidity\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePressure Accuracy\u003c\/td\u003e\n\u003ctd\u003e±1 hPa (300 to 1100 hPa range)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/pm2-5-air-quality-monitor-kit\"\u003eIndoor air quality monitor with VOC and temperature display\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/kit-indoor-weather-station\"\u003ePersonal weather station with data logging to an SD card\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003eAltitude logger for drones, rockets, or hiking GPS trackers\u003c\/li\u003e\n  \u003cli\u003eSmart home environmental sensor for automated ventilation control\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis module operates at 3.3V, so it works directly with 3.3V microcontrollers like ESP8266, ESP32, and Raspberry Pi. For 5V boards such as Arduino Uno, use a logic level shifter or ensure the I2C pull-up resistors are connected to the 3.3V rail. It pairs well with common I2C display modules (OLED\/LCD) for standalone readouts.\u003c\/p\u003e\n\n\u003ch2\u003eWiring Notes\u003c\/h2\u003e\n\u003cp\u003eFor I2C, connect VCC to 3.3V, GND to ground, SDA to data, and SCL to clock; the breakout often includes pull-up resistors. When using SPI, connect CS to a digital pin, SDI to MOSI, SDO to MISO, and SCK to clock, keeping wiring short to avoid signal integrity issues.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\n\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\n\n\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino Uno?\u003c\/summary\u003e\u003cp\u003eYes, but since Arduino Uno runs at 5V, you must use a logic level shifter for the I2C lines and power the module with 3.3V to avoid damage.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow is altitude calculated from pressure?\u003c\/summary\u003e\u003cp\u003eThe sensor provides pressure readings, and altitude is derived using the barometric formula. For accurate results, calibrate with a reference sea-level pressure value from a weather station.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan this sensor measure CO2 levels directly?\u003c\/summary\u003e\u003cp\u003eNo, the BME680 measures broad VOCs but not CO2. Some libraries estimate equivalent CO2 (eCO2) based on gas resistance, but it is not a substitute for a dedicated CO2 sensor.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53444955439469,"sku":"CDN-0265","price":780.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_7ecc5187-f169-4c5e-b868-0ca76c8ea3c4.jpg?v=1781512373"},{"product_id":"tcs34725-rgb-color-sensor-module-with-ir-filter-high-sensitivity","title":"TCS34725 RGB Color Sensor Module with IR Filter – High Sensitivity","description":"\u003ch1\u003eTCS34725 RGB Color Sensor Module with IR Filter and I2C Output\u003c\/h1\u003e\n    \u003cp\u003eThe TCS34725 is a high-sensitivity RGB color sensor module that detects red, green, blue and clear ambient light. It integrates an IR blocking filter for accurate color measurement, making it ideal for color sorting, ambient light sensing, and display calibration. This tiny breakout board communicates over I2C and works with both 3.3V and 5V systems.\u003c\/p\u003e\n    \u003ch2\u003eKey Specifications\u003c\/h2\u003e\n    \u003ctable\u003e\n      \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n\u003ctd\u003eSensor IC\u003c\/td\u003e\n\u003ctd\u003eAMS TCS34725\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eInterface\u003c\/td\u003e\n\u003ctd\u003eI2C (address 0x29)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd\u003e2.7V to 3.6V (module includes LDO for 5V tolerance)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMeasuring Range\u003c\/td\u003e\n\u003ctd\u003e380nm to 780nm (visible light) with IR filter\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eProgrammable Gain\u003c\/td\u003e\n\u003ctd\u003e1x to 60x\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e20mm x 18mm x 2mm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n    \u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\n    \u003cul\u003e\n      \u003cli\u003e\u003ca href=\"\/products\/kit-conveyor-belt-colour-sorter\"\u003eAutomatic color sorter using conveyor belt and servo control\u003c\/a\u003e\u003c\/li\u003e\n      \u003cli\u003eAmbient light-aware LED lighting system for home or office\u003c\/li\u003e\n      \u003cli\u003eColor-based liquid concentration analyzer for chemistry experiments\u003c\/li\u003e\n      \u003cli\u003eDigital color picker for matching paints or fabrics\u003c\/li\u003e\n    \u003c\/ul\u003e\n    \u003ch2\u003eCompatibility\u003c\/h2\u003e\n    \u003cp\u003eThis module works with any microcontroller having I2C, including Arduino Uno\/Mega, ESP8266, ESP32, Raspberry Pi, and STM32. On-board 3.3V regulator allows direct 5V supply; logic levels are 3.3V on I2C lines, but 5V-tolerant inputs are safe for most 5V boards. Use the Adafruit TCS34725 library for quick startup.\u003c\/p\u003e\n    \u003ch2\u003eWiring Notes\u003c\/h2\u003e\n    \u003cp\u003eConnect VIN to 3.3V or 5V, GND to ground. On Arduino Uno, wire SDA to A4 and SCL to A5. For other boards, use the default I2C pins. No external pull-up resistors are needed as the module includes them. Keep the sensor away from direct sunlight or strong infrared sources for best results.\u003c\/p\u003e\n    \u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\n    \u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\n    \u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino Uno?\u003c\/summary\u003e\u003cp\u003eYes, it connects via I2C: SDA to pin A4, SCL to pin A5. Use the Adafruit TCS34725 library for example code.\u003c\/p\u003e\u003c\/details\u003e\n    \u003cdetails\u003e\u003csummary\u003eCan it detect colors accurately under bright sunlight?\u003c\/summary\u003e\u003cp\u003eDirect sunlight contains high IR that can saturate the sensor. For outdoor use, add a physical IR-cut filter and reduce gain\/integration time.\u003c\/p\u003e\u003c\/details\u003e\n    \u003cdetails\u003e\u003csummary\u003eDoes this module work with 5V logic?\u003c\/summary\u003e\u003cp\u003eThe module accepts 5V on VIN, but I2C lines are 3.3V logic. Most 5V boards tolerate this, but check your board's specifications.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53444955472237,"sku":"CDN-0272","price":220.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/download_fb428698-4ae4-4614-8bca-fe5e42daaa5c.jpg?v=1781596128"},{"product_id":"hc-89-photoelectric-infrared-slot-sensor-interrupt-counter-module","title":"HC-89 Photoelectric Infrared Slot Sensor – Interrupt Counter Module","description":"\u003ch1\u003eHC-89 Photoelectric Infrared Slot Sensor – Interrupt Counter Module\u003c\/h1\u003e\u003cp\u003eThe HC-89 is a correlation photoelectric infrared slot sensor designed for non-contact object detection, counting, and position sensing. It uses an infrared emitter and phototransistor in a slotted housing to detect when an object passes through the gap, providing a digital output. This module is ideal for DIY automation, educational projects, and industrial applications requiring precise, fast response.\u003c\/p\u003e\u003ch2\u003eKey Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e3.3V – 5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSlot Width\u003c\/td\u003e\n\u003ctd\u003e3mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003eDigital (TTL)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDetection Method\u003c\/td\u003e\n\u003ctd\u003eInfrared photoelectric (correlation)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResponse Time\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;1ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e20mm x 10mm x 8mm (approx)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eObject counter for conveyor belts or DIY dispensers\u003c\/li\u003e\n\u003cli\u003eRotational speed measurement using an encoder wheel\u003c\/li\u003e\n\u003cli\u003eDoor or drawer open\/close detection\u003c\/li\u003e\n\u003cli\u003eLimit switch replacement for precise homing in 3D printers or CNC machines\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility\u003c\/h2\u003e\u003cp\u003eWorks with any microcontroller that supports 3.3V or 5V digital inputs, including Arduino Uno, Mega, Nano, ESP32, ESP8266, and Raspberry Pi Pico. The sensor module includes a built-in comparator, so no external circuitry is required; simply connect VCC, GND, and OUT to a digital pin. It can drive small loads directly or interface with logic-level inputs.\u003c\/p\u003e\u003ch2\u003eWiring Notes\u003c\/h2\u003e\u003cp\u003eConnect the VCC pin to 5V (or 3.3V), GND to common ground, and OUT to a digital input pin on your microcontroller. For reliable operation, ensure the slot is free of dust. Some modules include an indicator LED that lights when an object is detected.\u003c\/p\u003e\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino?\u003c\/summary\u003e\u003cp\u003eYes, the HC-89 outputs a digital signal that can be read by any Arduino digital pin. Just connect VCC to 5V, GND to GND, and OUT to a digital input.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan I use this for speed detection?\u003c\/summary\u003e\u003cp\u003eAbsolutely. Place a rotating wheel with slots or teeth in the sensor gap to detect pulses; each pulse corresponds to a tooth passing, allowing RPM calculation.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat if no object is in the slot?\u003c\/summary\u003e\u003cp\u003eThe output is normally HIGH when the IR beam is unblocked, and goes LOW when an object blocks the beam. Check your module's polarity; some may invert the logic.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53444955505005,"sku":"CDN-0273","price":45.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_5cab23f9-5375-4790-a945-d7eaf0e59714.jpg?v=1781512375"},{"product_id":"gy-53-vl53l0x-tof-laser-distance-sensor-module","title":"GY-53 VL53L0X ToF Laser Distance Sensor Module","description":"\u003ch1\u003eGY-53 VL53L0X Laser ToF Ranging Sensor – 2m Range\u003c\/h1\u003e\n\n\u003cp\u003eThe GY-53 module integrates the STMicroelectronics VL53L0X time-of-flight laser ranging sensor. It provides accurate, non-contact distance measurements up to 2 meters, making it ideal for obstacle avoidance, gesture detection, and short-range positioning. The I2C interface and compact breakout board allow easy integration into microcontroller projects.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e3.3V – 5V DC (on-board regulator)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMeasuring Range\u003c\/td\u003e\n\u003ctd\u003e30 mm to 2000 mm (in dark), 30 mm to 1000 mm (ambient light)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e1 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eAccuracy\u003c\/td\u003e\n\u003ctd\u003e±5% (typical, \u0026gt;80% reflectivity)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eInterface\u003c\/td\u003e\n\u003ctd\u003eI2C (address 0x29, configurable via XSHUT)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eLaser Class\u003c\/td\u003e\n\u003ctd\u003eClass 1 (eye-safe, 940 nm VCSEL)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eCollision avoidance system for small robots or rovers\u003c\/li\u003e\n  \u003cli\u003eLiquid level monitoring in tanks or containers\u003c\/li\u003e\n  \u003cli\u003eGesture-based control interface (wave to trigger)\u003c\/li\u003e\n  \u003cli\u003eDrone altitude hold and terrain following\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eWorks with any 3.3 V or 5 V microcontroller that supports I2C, including Arduino Uno\/Nano\/Mega, ESP8266\/ESP32, Raspberry Pi, and STM32 boards. Pair with motor drivers for autonomous robots or servo controllers for pan-tilt systems. Standard I2C pull-up resistors (typically 4.7 kΩ) are required if not already present on the bus.\u003c\/p\u003e\n\n\u003ch2\u003eWiring Notes\u003c\/h2\u003e\n\u003cp\u003eConnect VCC to 3.3 V or 5 V, GND to common ground, SDA to I2C data, and SCL to I2C clock. The XSHUT pin can be pulled LOW to disable the sensor or used with multiple sensors to assign unique I2C addresses. Keep wiring short and avoid high-current paths to prevent noise.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\n\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\n\n\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino?\u003c\/summary\u003e\u003cp\u003eYes, it uses I2C and works with both 3.3 V and 5 V Arduino boards. Libraries like Adafruit_VL53L0X make reading distance straightforward.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow accurate is the sensor?\u003c\/summary\u003e\u003cp\u003eUnder typical indoor conditions with good reflectivity, accuracy is within ±5%. For precision tasks, ensure stable lighting and target surface reflectivity.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan I measure distance through glass or transparent materials?\u003c\/summary\u003e\u003cp\u003eNo, the sensor's laser reflects off the first surface it hits, causing inaccurate readings. Use it only in open air or with non-reflective targets.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53444955603309,"sku":"CDN-0275","price":210.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_96004999-1f82-42da-b4dc-5e93fa1c0d21.jpg?v=1781512380"},{"product_id":"gp2y1010au0f-pm25-dust-sensor-sharp-optical-smoke-detector-compoden","title":"GP2Y1010AU0F PM2.5 Dust Sensor – Sharp Optical Smoke Detector | Compoden","description":"\u003ch1\u003eSharp GP2Y1010AU0F Optical Dust Sensor – PM2.5 Smoke Particle Detector\u003c\/h1\u003e\n\n\u003cp\u003eSharp GP2Y1010AU0F is an optical dust sensor that detects fine particles such as smoke, pollen, and dust in the air. It emits an infrared beam and measures the reflected light, outputting an analog voltage proportional to particle concentration. This compact module integrates easily with microcontrollers, making it ideal for air quality monitoring, HVAC systems, and DIY pollution trackers.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e5 V DC (VCC), 5 V (V-LED)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCurrent Consumption\u003c\/td\u003e\n\u003ctd\u003e20 mA max (VCC), 10 mA (ILED)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDetection Range\u003c\/td\u003e\n\u003ctd\u003e0 – 0.5 mg\/m³ (typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOutput Voltage\u003c\/td\u003e\n\u003ctd\u003e0.5 – 2.5 V (cleaned air – high dust)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-10 °C to +65 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e46 × 30 × 17.6 mm (W×D×H)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/pm2-5-air-quality-monitor-kit\"\u003eIndoor air quality monitor with real‑time PM2.5 display\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/kit-forest-fire-early-warning-kit-with-arduino-uno-plus-sensor\"\u003ePortable smoke detector for early fire warning\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003eAutomated ventilation control based on dust levels\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/arduino-nano-33-iot-data-logging-project-kit\"\u003eData‑logging pollution tracker with IoT dashboard\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis sensor outputs an analog signal in the 0–5 V range, so it works with any microcontroller that has an ADC accepting 5 V. Popular choices: Arduino Uno, Mega, Nano (5 V boards) directly; ESP32\/ESP8266 (3.3 V logic) require level shifting on analog input, or use a voltage divider. Raspberry Pi needs an external ADC (e.g., MCP3008). The sensor’s V‑LED pin should be driven intermittently to prolong IR LED life, but can be tied to VCC for continuous operation.\u003c\/p\u003e\n\n\u003ch2\u003eWiring Notes\u003c\/h2\u003e\n\u003cp\u003eTypical wiring: sensor pin 1 (GND) to ground, pin 2 (Vo) to Arduino A0, pin 3 (VCC) to 5V, pin 4 (V-LED) to 5V through a 150 Ω resistor, pin 5 (LED‑GND) to ground. For best accuracy, read Vo during the LED‑ON pulse (triggered by driving a digital pin to V‑LED).\u003c\/p\u003e\n\n\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\n\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\n\n\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino?\u003c\/summary\u003e\u003cp\u003eYes, the GP2Y1010AU0F works directly with 5 V Arduino boards. Connect Vo to any analog pin and read the voltage. Many Arduino libraries are available for straightforward integration.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow do I calibrate the sensor for accurate PM2.5 readings?\u003c\/summary\u003e\u003cp\u003eThe sensor outputs a voltage linearly related to dust density. Zero‑dust voltage is typically around 0.5 V. Use a reference instrument or clean environment to establish calibration points, then map the output to µg\/m³.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan I run the LED continuously?\u003c\/summary\u003e\u003cp\u003eContinuous 5 V on V‑LED will work but shortens the IR LED lifespan. The datasheet recommends a 10 ms pulse \/ 10 ms off cycle for long‑term use. Most libraries implement pulsing by connecting V‑LED to a digital pin.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53444956651885,"sku":"CDN-0271","price":370.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/download_913ae334-f7c0-4d0e-8e7b-d7822fbaec27.jpg?v=1781525635"},{"product_id":"zmpt101b-0-250v-ac-voltage-sensor-module","title":"ZMPT101B 0-250V AC Voltage Sensor Module","description":"\u003ch1\u003eZMPT101B Single Phase AC Voltage Sensor Module – 0-250V Range\u003c\/h1\u003e\u003cp\u003eThe ZMPT101B is a high-precision single-phase AC voltage sensor module capable of measuring AC voltages from 0 to 250V RMS. Based on a miniature potential transformer, it provides galvanic isolation between the high-voltage AC side and the low-voltage measurement circuit, ensuring safety and noise immunity. The module outputs a corresponding 0–5V AC analog signal, which can be read by any microcontroller with an ADC. It’s ideal for building energy monitors, overvoltage protection systems, and IoT-based power logging applications.\u003c\/p\u003e\u003ch2\u003eKey Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage Range\u003c\/td\u003e\n\u003ctd\u003e0–250V AC (RMS)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Signal\u003c\/td\u003e\n\u003ctd\u003e0–5V AC (adjustable via trimmer)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd\u003e5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNon-linearity\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;0.2%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation Voltage\u003c\/td\u003e\n\u003ctd\u003e2000V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e49.5mm × 19.4mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/esp32-energy-monitor-dashboard-kit-iot-power-meter-with-live-web-charts\"\u003eSmart home energy monitor with Arduino and WiFi dashboard\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003eOvervoltage\/undervoltage protection relay for appliances\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kit-sd-card-data-logger\"\u003eMains power quality data logger with SD card\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003eAutomatic voltage regulator with real-time feedback control\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility\u003c\/h2\u003e\u003cp\u003eWorks with any microcontroller having an analog input: Arduino Uno\/Nano (5V logic), ESP32\/ESP8266 (3.3V logic with output scaling), Raspberry Pi (via external ADC), STM32, and more. The onboard potentiometer lets you calibrate the output amplitude to match the microcontroller’s ADC range. For 3.3V systems, simply adjust the trimmer until the maximum expected AC voltage corresponds to ~3.3V peak output.\u003c\/p\u003e\u003ch2\u003eWiring Notes\u003c\/h2\u003e\u003cp\u003eConnect VCC to 5V DC, GND to ground, and OUT to the microcontroller’s analog pin. The AC voltage to be measured connects to the sensor’s high-voltage terminals – no direct connection to the low-voltage side is required due to transformer isolation. Exercise caution when wiring mains voltage; ensure all connections are insulated and the board is mounted securely away from touchable areas.\u003c\/p\u003e\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino?\u003c\/summary\u003e\u003cp\u003eYes, simply connect VCC to 5V, GND to GND, and OUT to an analog pin (e.g., A0). Use analogRead() to sample the instantaneous AC waveform, then calculate RMS values in software. Calibration may be needed using the onboard potentiometer.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan I measure three-phase AC voltage?\u003c\/summary\u003e\u003cp\u003eThis module is single-phase. For three-phase systems, use three separate ZMPT101B modules, one per phase, with each isolated appropriately. Ensure all three share a common ground on the DC side if your microcontroller uses a single ADC.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eDoes it require calibration?\u003c\/summary\u003e\u003cp\u003eThe output amplitude is adjustable via the trimmer. Before final use, apply a known reference voltage (e.g., 230V AC) and adjust the potentiometer until the output swing matches your ADC’s input range for accurate RMS conversion.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53444956782957,"sku":"CDN-0278","price":110.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_eb7ffdb0-867d-4cde-bd7c-cf3e4d83dde9.jpg?v=1781512388"},{"product_id":"m18-photoelectric-sensor-pnp-nonc-10-30vdc-compoden","title":"M18 Photoelectric Sensor PNP NO+NC 10-30VDC | Compoden","description":"\u003ch1\u003eM18 Photoelectric Sensor – PNP NO + NC, 10-30VDC\u003c\/h1\u003e\n\n\u003cp\u003eThe M18 photoelectric sensor with PNP output (NO + NC) is a diffuse reflective sensor designed for non-contact object detection up to 20cm. It operates on a wide 10-30VDC supply and can switch loads up to 300mA, making it suitable for industrial automation, conveyor systems, and object counting applications. Its M18 threaded metal housing ensures reliable performance in dusty or wet environments.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSensing method\u003c\/td\u003e\n\u003ctd\u003eDiffuse reflective\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSensing distance\u003c\/td\u003e\n\u003ctd\u003e20cm (adjustable)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOutput type\u003c\/td\u003e\n\u003ctd\u003ePNP, NO + NC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSupply voltage\u003c\/td\u003e\n\u003ctd\u003e10-30VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMax load current\u003c\/td\u003e\n\u003ctd\u003e300mA\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eHousing material\u003c\/td\u003e\n\u003ctd\u003eNickel-plated brass\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eConveyor belt object counting system with Arduino and relay output\u003c\/li\u003e\n  \u003cli\u003eAutomatic door opener triggered by presence detection\u003c\/li\u003e\n  \u003cli\u003eBottle filling line position sensor for PLC-based control\u003c\/li\u003e\n  \u003cli\u003eDIY garage parking assistant with LED indicators\u003c\/li\u003e\n  \u003cli\u003eLiquid level detection in tanks using a reflective target\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis sensor works with any 10-30VDC industrial controller or PLC. For microcontroller projects (Arduino, ESP32, Raspberry Pi), a voltage divider (e.g., 10kΩ + 5kΩ) or optocoupler is necessary to step down the PNP output (which switches to V+) to a safe 5V or 3.3V logic level. It pairs well with relay modules for driving heavier loads.\u003c\/p\u003e\n\n\u003ch2\u003eWiring Notes\u003c\/h2\u003e\n\u003cp\u003eStandard 3-wire connection: Brown = +10-30VDC, Blue = 0V\/GND, Black = signal output (PNP, active high). Use a 0.1µF capacitor across the supply lines near the sensor to reduce electrical noise. Do not exceed 300mA load current; use an external relay for higher currents.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\n\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\n\n\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino?\u003c\/summary\u003e\u003cp\u003eYes, but requires a voltage divider (10kΩ + 5kΩ) or logic level converter to step down the 10-30V output to 5V for Arduino input pins.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan this sensor detect transparent objects?\u003c\/summary\u003e\u003cp\u003eDiffuse reflective sensors may struggle with transparent or highly reflective items. For reliable detection of transparent materials, consider a through-beam sensor.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is the difference between NO and NC outputs?\u003c\/summary\u003e\u003cp\u003eNO (normally open) output is off when no object is present and turns on upon detection. NC (normally closed) is the opposite: on when clear, off when an object is detected. This sensor provides both signals simultaneously.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53444956815725,"sku":"CDN-0281","price":480.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/download_c9606699-c27a-4823-9a24-5d84f06e441f.jpg?v=1781592203"},{"product_id":"fresnel-lens-for-bm612-pir-sensor-9mm-diameter-0285","title":"Fresnel Lens for BM612 PIR Sensor - 9mm Diameter","description":"\u003ch1\u003eFresnel Lens for BM612 PIR Sensor – 9mm Diameter\u003c\/h1\u003e\n\n\u003cp\u003eThis Fresnel lens is designed to replace or upgrade the lens on a BM612 passive infrared (PIR) sensor module. It focuses infrared radiation onto the sensor, significantly extending detection range and improving sensitivity. With a diameter of 9mm, it fits directly onto the standard BM612 sensor package.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eBM612 PIR sensor module\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eHigh-Density Polyethylene (HDPE)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eWavelength Range\u003c\/td\u003e\n\u003ctd\u003e5 – 14 µm (IR)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e9 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e~10 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eThickness\u003c\/td\u003e\n\u003ctd\u003e0.5 mm (edge)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/kit-home-security-motion-sensor-kit-with-esp32\"\u003eMotion-activated security lights for home or office\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003eAutomatic door openers and presence-based triggers\u003c\/li\u003e\n  \u003cli\u003eWildlife cameras and animal detection systems\u003c\/li\u003e\n  \u003cli\u003eEnergy-saving occupancy sensors for classrooms\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis lens is specifically shaped for the BM612 PIR sensor, commonly found in HC-SR501-style modules. It works with microcontrollers like Arduino Uno, ESP8266, and Raspberry Pi Pico. The sensor operates at 3.3V to 5V DC, outputting a logic-high signal when motion is detected.\u003c\/p\u003e\n\n\u003ch2\u003eWiring Notes\u003c\/h2\u003e\n\u003cp\u003eThe lens mounts directly over the sensor element – no wiring is required for the lens itself. For the BM612 module, connect VCC to 5V, GND to ground, and OUT to a digital input pin. Include a 10kΩ pull-up resistor on the output if using long cable runs.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\n\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\n\n\u003cdetails\u003e\u003csummary\u003eIs this compatible with HC-SR501 PIR modules?\u003c\/summary\u003e\u003cp\u003eThe BM612 is the sensor inside many HC-SR501 modules; this lens fits the sensor directly, not the module casing. Ensure the sensor diameter matches 9mm.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is the typical detection range after installing this lens?\u003c\/summary\u003e\u003cp\u003eWith optimal positioning, detection range can extend up to 5-7 meters, depending on the sensor's sensitivity settings.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDoes the lens come with adhesive for mounting?\u003c\/summary\u003e\u003cp\u003eNo, the lens is press-fit over the sensor dome. It holds securely without adhesive under normal conditions.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53444956848493,"sku":"CDN-0285","price":25.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_ceefd11f-72f0-4837-b419-70672215255b.jpg?v=1781512392"},{"product_id":"hr202-resistive-humidity-sensor-analog-output-20-95-rh","title":"HR202 Resistive Humidity Sensor – Analog Output 20-95% RH","description":"\u003ch1\u003eHR202 Resistive Humidity Sensor – Analog Output, 20-95% RH\u003c\/h1\u003e\n\n\u003cp\u003eThe HR202 resistive humidity sensor detects relative humidity by changing its resistance in response to moisture levels. It provides an analog voltage output proportional to humidity, making it easy to interface with a microcontroller’s ADC for environmental monitoring projects. This sensor is widely used in climate control, agriculture, and DIY weather stations.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e3.3V – 5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eHumidity Range\u003c\/td\u003e\n\u003ctd\u003e20% – 95% RH\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eAccuracy\u003c\/td\u003e\n\u003ctd\u003e±5% RH (at 25°C, 60% RH)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003eAnalog voltage (0-3V typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eResponse Time\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;10 seconds (63% step change)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e0°C – 60°C\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/kit-automated-plant-watering\"\u003eAutomated plant watering system that waters when soil moisture drops\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/kit-animated-weather-station-display\"\u003ePortable weather station with LCD display for temperature and humidity\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003eSmart bathroom exhaust fan that activates at high humidity levels\u003c\/li\u003e\n  \u003cli\u003eIoT greenhouse humidity logger using ESP8266 and cloud dashboard\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThe HR202 operates with any microcontroller that has an analog-to-digital converter (ADC). It works seamlessly with Arduino Uno, Nano, Mega, ESP32, ESP8266, and Raspberry Pi (via external ADC like MCP3008). Supply voltage of 3.3V to 5V allows direct connection without level shifting in most cases.\u003c\/p\u003e\n\n\u003ch2\u003eWiring Notes\u003c\/h2\u003e\n\u003cp\u003eConnect VCC to 5V (or 3.3V), GND to common ground, and the analog output pin to any analog input on your microcontroller (e.g., A0 on Arduino). No pull-up resistor is needed for standard modules. For bare sensor elements, use a 10kΩ resistor in a voltage divider configuration.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\n\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\n\n\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino?\u003c\/summary\u003e\u003cp\u003eYes, the HR202 outputs an analog signal that can be read by any Arduino board's analog input pin (A0-A5). Simply connect VCC to 5V, GND to GND, and OUT to A0, then use analogRead() in your sketch.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow can I convert the analog reading to humidity percentage?\u003c\/summary\u003e\u003cp\u003eThe sensor’s datasheet provides a conversion curve, but a common approach is to calibrate it against a known humidity source and map the ADC values to 0-100% RH using linear or polynomial approximation in your code.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan this sensor detect condensation or dew?\u003c\/summary\u003e\u003cp\u003eThe HR202 is not designed for condensation; direct water contact may damage it or cause inaccurate readings. It works best in air where humidity stays below 95% RH without condensation.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53444956881261,"sku":"CDN-0282","price":40.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_9cf3d297-0dcd-4b9e-b7c1-80660e81dee9.jpg?v=1781512395"},{"product_id":"pt100-head-type-temperature-sensor-10-inch-probe-compoden","title":"PT100 Head Type Temperature Sensor 10 inch Probe – Compoden","description":"\u003ch1\u003ePT100 Head Type Temperature Sensor – 10 inch Long Probe\u003c\/h1\u003e\n\n\u003cp\u003eThe PT100 head type temperature sensor features a platinum RTD element housed in a rugged connection head with a 10-inch (254 mm) stainless steel probe. It provides precise temperature measurement from -50°C to 400°C, making it suitable for industrial process control, scientific experiments, and DIY automation. The 3-wire configuration ensures accurate readings by compensating for lead resistance, and the standard terminal block simplifies wiring.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSensor Type\u003c\/td\u003e\n\u003ctd\u003ePT100 RTD\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eProbe Length\u003c\/td\u003e\n\u003ctd\u003e10 inches (254 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eProbe Diameter\u003c\/td\u003e\n\u003ctd\u003e6 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTemperature Range\u003c\/td\u003e\n\u003ctd\u003e-50°C to 400°C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eAccuracy\u003c\/td\u003e\n\u003ctd\u003e±0.3°C at 0°C (Class B)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eConnection\u003c\/td\u003e\n\u003ctd\u003e3-wire terminal block in head\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003e316 stainless steel probe\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMounting Thread\u003c\/td\u003e\n\u003ctd\u003eM8x1.25\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/esp8266-d1-mini-data-logging-project-kit\"\u003eIndustrial temperature monitoring and data logging system\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003eDIY PID controller for ovens, kilns, or soldering stations\u003c\/li\u003e\n  \u003cli\u003ePrecision 3D printer hotend temperature sensing\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/arduino-weather-logger-kit-for-hiking-trails-log-and-plot-data\"\u003eAmbient temperature logger for weather stations\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis sensor works with any RTD input module, such as the MAX31865 amplifier, which is widely available for Arduino, ESP32, and Raspberry Pi. It also connects directly to industrial PID controllers and PLCs. The recommended excitation current is 1 mA maximum to avoid self-heating, and supply voltage depends on the amplifier used (typically 3.3V or 5V). Pair with a MAX31865 for digital output via SPI, or with an analog front-end for direct ADC reading.\u003c\/p\u003e\n\n\u003ch2\u003eWiring Notes\u003c\/h2\u003e\n\u003cp\u003eInside the connection head, three terminals are provided: two carry the PT100 element signal, and the third is a compensation lead for 3-wire measurement. Connect all three to your RTD amplifier or instrument, matching the wiring diagram carefully. Keep lead wire runs as short as possible, and use shielded cable in electrically noisy environments. Always tighten terminal screws securely to prevent intermittent readings.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\n\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\n\n\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino?\u003c\/summary\u003e\u003cp\u003eYes, when used with a MAX31865 RTD amplifier module, this sensor connects easily to Arduino, ESP32, or Raspberry Pi through the SPI or I2C interface of the amplifier.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan I use this to measure liquid temperature?\u003c\/summary\u003e\u003cp\u003eThe probe is sealed and can be immersed in non-corrosive liquids. For aggressive chemicals or pressurized systems, install it inside a thermowell for protection.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is the difference between a thermocouple and a PT100 RTD?\u003c\/summary\u003e\u003cp\u003ePT100 RTDs offer higher accuracy and long-term stability compared to most thermocouples. This sensor uses a platinum resistance element, whereas thermocouples generate a voltage, so wiring and interfacing differ.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53444957045101,"sku":"CDN-0291","price":630.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_26d77d67-e074-410f-b346-a3c3b00a3571.jpg?v=1781512405"},{"product_id":"hx1838-vs1838-nec-ir-remote-control-sensor-module-compoden","title":"HX1838 VS1838 NEC IR Remote Control Sensor Module | Compoden","description":"\u003ch1\u003eHX1838 VS1838 NEC Infrared IR Remote Control Sensor Module – 38kHz IR Receiver\u003c\/h1\u003e\u003cp\u003eThe HX1838 (also labeled VS1838) is a compact infrared receiver module designed to demodulate and decode NEC protocol signals from standard IR remote controls. It is perfect for adding wireless control to Arduino, ESP32, Raspberry Pi, or other microcontroller projects. This module provides reliable reception at distances up to 10 meters with its 38kHz carrier frequency.\u003c\/p\u003e\u003ch2\u003eKey Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e2.7V – 5.5V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCarrier Frequency\u003c\/td\u003e\n\u003ctd\u003e38kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtocol\u003c\/td\u003e\n\u003ctd\u003eNEC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReception Range\u003c\/td\u003e\n\u003ctd\u003eUp to 10m (line of sight)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput\u003c\/td\u003e\n\u003ctd\u003eDigital active low\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePinout\u003c\/td\u003e\n\u003ctd\u003eGND, VCC, OUT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kit-arduino-clap-controlled-robot-car\"\u003eRemote-controlled robot car using Arduino\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003eUniversal IR remote with learning ability\u003c\/li\u003e\n\u003cli\u003eWireless home automation for lights and fans\u003c\/li\u003e\n\u003cli\u003eIR signal repeater or extender\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility\u003c\/h2\u003e\u003cp\u003eCompatible with any 3.3V or 5V microcontroller, including Arduino Uno, Nano, Mega, ESP8266, ESP32, and Raspberry Pi. Connect the OUT pin to a digital input and use the IRremote library for straightforward decoding. The wide voltage range makes it suitable for both 3.3V and 5V systems.\u003c\/p\u003e\u003ch2\u003eWiring Notes\u003c\/h2\u003e\u003cp\u003eConnect VCC to 3.3V or 5V, GND to ground, and OUT to a digital pin (e.g., Arduino pin 2). No external pull-up resistor is required; the module includes built‑in filtering and demodulation circuitry. Keep the sensor’s face unobstructed for maximum range.\u003c\/p\u003e\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino Uno?\u003c\/summary\u003e\u003cp\u003eYes, it works directly with the Arduino Uno. Wire VCC to 5V, GND to GND, and OUT to digital pin 2, then use the IRremote library to decode signals.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat is the maximum range of this IR sensor?\u003c\/summary\u003e\u003cp\u003eUnder ideal conditions with a clear line of sight, the module reliably receives signals up to 10 meters. Obstacles and bright ambient light may reduce effective range.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWill it work with any IR remote?\u003c\/summary\u003e\u003cp\u003eIt decodes the NEC protocol used by many consumer remotes. If your remote uses a different protocol (e.g., Sony SIRC), you can still capture raw timings with appropriate library support.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53444957077869,"sku":"CDN-0289","price":75.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_cc7dae92-7149-4dd6-b78d-fde73ccb8016.jpg?v=1781512405"},{"product_id":"m18-photoelectric-proximity-sensor-pnp-no-compoden","title":"M18 Photoelectric Proximity Sensor PNP NO - Compoden","description":"\u003ch1\u003eM18 Photoelectric Proximity Sensor - PNP NO Output\u003c\/h1\u003e\u003cp\u003eThis M18 cylindrical photoelectric sensor provides non-contact object detection using infrared light. With a PNP normally open (NO) output, it switches the load to the positive supply when an object is detected within its adjustable sensing range. It is commonly used in assembly lines, packaging machines, and robotics for reliable position sensing.\u003c\/p\u003e\u003ch2\u003eKey Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensing Type\u003c\/td\u003e\n\u003ctd\u003eDiffuse reflective (infrared)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAdjustable Range\u003c\/td\u003e\n\u003ctd\u003e5-30 cm (approx.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd\u003e10-30V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003ePNP, Normally Open\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Load Current\u003c\/td\u003e\n\u003ctd\u003e200 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHousing Material\u003c\/td\u003e\n\u003ctd\u003eNickel-plated brass, IP67\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eConveyor belt object counter\u003c\/li\u003e\n\u003cli\u003eAutomatic door or gate trigger\u003c\/li\u003e\n\u003cli\u003eLiquid level detection in opaque tanks\u003c\/li\u003e\n\u003cli\u003eAssembly line part presence verification\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility\u003c\/h2\u003e\u003cp\u003eThis sensor works with any 10-30V DC power system, including industrial PLCs, microcontrollers like Arduino or ESP32 (with a voltage divider or level shifter for input pin protection), and single-board computers like Raspberry Pi via optocoupler or relay module. It pairs well with NPN-to-PNP converters if your controller expects NPN input.\u003c\/p\u003e\u003ch2\u003eWiring Notes\u003c\/h2\u003e\u003cp\u003eStandard wire colors: brown for +V, blue for ground, black for signal output. The load (or pull-down resistor if interfacing with a microcontroller) should be connected between the black wire and ground. Ensure the load current does not exceed 200 mA.\u003c\/p\u003e\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino?\u003c\/summary\u003e\u003cp\u003eYes, but the output signal is 10-30V, so you must use a voltage divider or level shifter to protect the Arduino's 5V input pin. Never connect the black wire directly to an Arduino pin.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat is the sensing range?\u003c\/summary\u003e\u003cp\u003eThe sensing distance is adjustable from approximately 5 cm to 30 cm for a white object. Dark or matte surfaces may reduce the maximum range.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan it detect transparent objects?\u003c\/summary\u003e\u003cp\u003eStandard diffuse sensors struggle with transparent materials. For reliable detection, consider a retroreflective or through-beam sensor.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53444957143405,"sku":"CDN-0290","price":530.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_be3e273d-f6e5-4a6f-ac8b-78879005d228.jpg?v=1781512407"},{"product_id":"lm8-3002pa-proximity-sensor-8mm-pnp-no-inductive-switch","title":"LM8-3002PA Proximity Sensor 8mm PNP NO | Inductive Switch","description":"\u003ch1\u003eLM8-3002PA 8mm PNP NO Proximity Sensor\u003c\/h1\u003e\n\u003cp\u003eThe LM8-3002PA is an inductive proximity switch with an 8mm sensing distance and PNP normally-open output. It detects metal objects without contact, making it ideal for industrial automation, CNC machines, and robotics. Its M8 cylindrical housing and IP67 rating ensure durability in harsh environments.\u003c\/p\u003e\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensing Distance\u003c\/td\u003e\n\u003ctd\u003e8mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003ePNP Normally Open (NO)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e6-36V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSwitching Frequency\u003c\/td\u003e\n\u003ctd\u003e500Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHousing Material\u003c\/td\u003e\n\u003ctd\u003eNickel-plated Brass, M8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection Rating\u003c\/td\u003e\n\u003ctd\u003eIP67\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eCNC limit switch for end-stop detection\u003c\/li\u003e\n\u003cli\u003eConveyor belt object counting system\u003c\/li\u003e\n\u003cli\u003eAutomatic door control with metal detection\u003c\/li\u003e\n\u003cli\u003e3D printer bed leveling sensor\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis sensor works with PLCs, Arduino, and Raspberry Pi, but the PNP output requires a voltage divider for 3.3V\/5V logic. Pair with relay modules or optocouplers for high-current loads. Its 6-36V range suits most industrial and hobbyist setups.\u003c\/p\u003e\n\u003ch2\u003eWiring Notes\u003c\/h2\u003e\n\u003cp\u003eConnect brown wire to positive supply (6-36V DC), blue to ground, and black to your input device. For microcontrollers, use a 10kΩ-20kΩ voltage divider on black. Ensure the load does not exceed 200mA.\u003c\/p\u003e\n\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\n\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino?\u003c\/summary\u003e\u003cp\u003eYes, but the PNP output supplies positive voltage, so use a voltage divider (e.g., 10kΩ to 20kΩ) to step down to 5V or 3.3V. Check logic level requirements.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat metals can it detect?\u003c\/summary\u003e\u003cp\u003eIt detects all metals, with best performance on ferrous materials. Non-ferrous metals may have a slightly reduced sensing range.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDoes it work in wet conditions?\u003c\/summary\u003e\u003cp\u003eWith an IP67 rating, it withstands dust and temporary immersion in water. Avoid prolonged submersion.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53444957176173,"sku":"CDN-0293","price":370.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_eab64695-6e23-4ba9-be4a-9e8cd6537725.jpg?v=1781512408"},{"product_id":"8mm-proximity-sensor-npn-no-inductive-switch-for-automation","title":"8mm Proximity Sensor NPN NO – Inductive Switch for Automation","description":"\u003ch1\u003e8mm Proximity Sensor – NPN NO Inductive Switch\u003c\/h1\u003e\u003cp\u003eThe 8mm proximity switch sensor is an inductive sensor with NPN normally open output. It detects metal objects within an 8mm range without physical contact, making it ideal for position sensing in automation systems, CNC machines, and robotics. Its non-contact detection ensures long life and reliable switching in industrial environments.\u003c\/p\u003e\u003ch2\u003eKey Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor Type\u003c\/td\u003e\n\u003ctd\u003eInductive\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensing Distance\u003c\/td\u003e\n\u003ctd\u003e8mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003eNPN Normally Open (NO)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e6-36V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Output Current\u003c\/td\u003e\n\u003ctd\u003e200mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSwitching Frequency\u003c\/td\u003e\n\u003ctd\u003e500 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHousing Material\u003c\/td\u003e\n\u003ctd\u003eNickel-plated brass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Size\u003c\/td\u003e\n\u003ctd\u003eM18\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eLimit switch for 3D printers or CNC machines\u003c\/li\u003e\n\u003cli\u003eObject detection on conveyor belts\u003c\/li\u003e\n\u003cli\u003eRobot endstop for precision movement\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kit-industrial-voice-safety-interlock\"\u003eIndustrial machine safety interlock\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility\u003c\/h2\u003e\u003cp\u003eThis sensor works with any microcontroller or PLC accepting NPN signals, including Arduino, Raspberry Pi, and ESP32. Its 6-36V operating range suits industrial power supplies, and the NPN output can directly interface with 5V or 3.3V logic using a pull-up resistor. Commonly paired with motor drivers and relay modules for automated control.\u003c\/p\u003e\u003ch2\u003eWiring Notes\u003c\/h2\u003e\u003cp\u003eConnect brown wire to positive supply (6-36V DC), blue to ground, and black to the signal input. For microcontroller use, add a 10kΩ pull-up resistor from the black wire to VCC to ensure a clean high signal; the output sinks to ground when a metal object is detected.\u003c\/p\u003e\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino?\u003c\/summary\u003e\u003cp\u003eYes, wire the sensor to an external 12V supply (brown to 12V, blue to GND), and connect the black signal wire to an Arduino digital pin via a 10kΩ pull-up resistor to Arduino’s 5V pin. The output will be HIGH when no metal is detected and LOW when triggered.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat is the maximum switching speed?\u003c\/summary\u003e\u003cp\u003eThe sensor has a switching frequency of up to 500 Hz, enabling 500 detections per second. It is suitable for most automation tasks but not for high-speed counting applications beyond this rate.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan it detect plastic or wood?\u003c\/summary\u003e\u003cp\u003eNo, this inductive sensor only detects metal objects. For non-metallic materials, a capacitive proximity sensor is required.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53444957208941,"sku":"CDN-0294","price":370.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_772f37f3-77dc-4777-95f4-e8310f13c85e.jpg?v=1781512411"},{"product_id":"ceyone-m18-inductive-proximity-sensor-npn-nonc-8mm","title":"Ceyone M18 Inductive Proximity Sensor NPN NO+NC 8mm","description":"\u003ch1\u003eCeyone M18 NPN NO+NC Inductive Proximity Sensor - 8mm Detection Range\u003c\/h1\u003e\u003cp\u003eThe Ceyone M18 proximity sensor is an NPN output inductive sensor with both normally open (NO) and normally closed (NC) switching. Designed for industrial automation, it detects metal objects at distances up to 8mm. Its rugged tube-type M18 threaded body allows easy mounting in panels or brackets.\u003c\/p\u003e\u003ch2\u003eKey Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensing Distance\u003c\/td\u003e\n\u003ctd\u003e8mm (shielded)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003eNPN NO + NC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd\u003e10-30V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHousing\u003c\/td\u003e\n\u003ctd\u003eM18 nickel-plated brass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnection\u003c\/td\u003e\n\u003ctd\u003e4-wire, 2m cable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eMetal object detection conveyor systems\u003c\/li\u003e\n\u003cli\u003eAutomated position sensing for CNC machines\u003c\/li\u003e\n\u003cli\u003eObject counting in assembly lines\u003c\/li\u003e\n\u003cli\u003eProximity-triggered alerts for safety systems\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility\u003c\/h2\u003e\u003cp\u003eThis sensor operates on 10-30V DC and provides NPN sinking outputs, compatible with most PLCs, Arduino (with pull-up resistor), and industrial controllers. Ensure your input device accepts NPN signals. Commonly used with Siemens, Allen-Bradley, and Mitsubishi PLCs.\u003c\/p\u003e\u003ch2\u003eWiring Notes\u003c\/h2\u003e\u003cp\u003eConnect brown wire to positive supply (+V), blue to ground (0V), black (NO) and white (NC) to your controller inputs. NPN outputs sink current; your input must have a pull-up resistor to V+ (typically 10kΩ). Do not exceed the rated supply voltage.\u003c\/p\u003e\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino?\u003c\/summary\u003e\u003cp\u003eYes, the NPN output can interface with Arduino digital inputs. Add a 10kΩ pull-up resistor from the input pin to 5V, and connect the sensor output (NO or NC) to the pin. Ensure the sensor supply voltage is 10-30V DC, separate from Arduino logic.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan I use this to detect non-metal objects?\u003c\/summary\u003e\u003cp\u003eNo, this is an inductive sensor and only detects ferrous and non-ferrous metals. For other materials, consider capacitive sensors.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat is the difference between NO and NC outputs?\u003c\/summary\u003e\u003cp\u003eNormally Open (NO) output is high (open) when no metal is present and goes low (sinking) when metal is detected. Normally Closed (NC) is the opposite: low when no metal, high when detected.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53444957503853,"sku":"CDN-0299","price":380.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_0b057962-b91f-49c9-aff7-01208cf92c27.jpg?v=1781512419"},{"product_id":"ldr-light-sensor-module-with-daynight-invert-logic-compoden","title":"LDR Light Sensor Module with Day\/Night Invert Logic | CompoDen","description":"\u003ch1\u003eLDR Light Sensor Module with Day\/Night Invert Logic – Digital Output, Adjustable Threshold\u003c\/h1\u003e\u003cp\u003eThe LDR Light Sensor Module with Day\/Night Invert Logic is a digital light detection module using an onboard comparator to provide a clean HIGH\/LOW signal based on ambient light levels. Ideal for automatic lighting, security systems, and robotics, it features an adjustable sensitivity potentiometer and a jumper to invert the output logic, making it versatile for both light-activated and dark-activated circuits. The module operates at 3.3V–5V and outputs a TTL-compatible signal directly to microcontrollers.\u003c\/p\u003e\u003ch2\u003eKey Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e3.3V to 5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eComparator IC\u003c\/td\u003e\n\u003ctd\u003eLM393\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Signal\u003c\/td\u003e\n\u003ctd\u003eDigital (TTL compatible); sink current 15mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensitivity Adjustment\u003c\/td\u003e\n\u003ctd\u003eOnboard potentiometer (100K)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLogic Inversion\u003c\/td\u003e\n\u003ctd\u003eJumper to select light-on or dark-on mode\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBoard Size\u003c\/td\u003e\n\u003ctd\u003e32 mm x 14 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eAutomatic porch light that switches on at dusk using a relay module.\u003c\/li\u003e\n\u003cli\u003eDarkness-activated LED strip for staircases or cabinets.\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kit-line-following-robot\"\u003eLine-following robot with ambient light sensing for course adjustments.\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kit-real-time-clock-alarm\"\u003eSunrise alarm clock that triggers a buzzer when ambient light increases.\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility\u003c\/h2\u003e\u003cp\u003eThis module works with any microcontroller that has a digital input pin, including Arduino Uno, Nano, Mega, ESP8266, ESP32, and Raspberry Pi (with appropriate level shifting for 3.3V logic). Connect the DO pin directly to a digital I\/O. The output is push-pull with onboard pull-up, so no external resistors are needed. Common pairings include relay modules, motor drivers, and LED strips.\u003c\/p\u003e\u003ch2\u003eWiring Notes\u003c\/h2\u003e\u003cp\u003eConnect VCC to 3.3V or 5V on your board, GND to ground, and DO to a digital input pin. The module includes a power LED and an output indicator LED. When using with inductive loads like relays, add a flyback diode and a transistor driver if the relay coil current exceeds the module’s 15mA sink capacity. No additional pull-up is required.\u003c\/p\u003e\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino Uno?\u003c\/summary\u003e\u003cp\u003eYes, the module works directly with the Arduino Uno at 5V logic. Connect VCC to 5V, GND to GND, and DO to any digital pin (e.g., pin 2) and read its state with digitalRead().\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eHow do I invert the output logic?\u003c\/summary\u003e\u003cp\u003eThe board has a 2-pin jumper header. Place the jumper on the pins marked L to get HIGH when light is above the threshold (light-on). Move it to pins marked D for HIGH when dark (dark-on).\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat is the detection range?\u003c\/summary\u003e\u003cp\u003eThe sensitivity potentiometer adjusts the threshold from a few lux (dim light) to direct sunlight. Turn it clockwise for higher light thresholds. The onboard LDR responds across a wide spectrum.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53444957667693,"sku":"CDN-0305","price":45.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_c0e069e6-0465-43f6-8002-9d117bd3ecfd.jpg?v=1781512425"},{"product_id":"sw18020p-vibration-sensor-digital-spring-switch-module","title":"SW18020P Vibration Sensor - Digital Spring Switch Module","description":"\u003ch1\u003eSW18020P Vibration Sensor — Digital Spring Switch Module\u003c\/h1\u003e\u003cp\u003eThe SW18020P is a vibration sensor module that uses a spring mechanism to detect motion or impact. It outputs a clean digital signal when vibration exceeds a set threshold, making it easy to integrate with microcontrollers for security alarms, tap detection, and activity monitoring. Its onboard potentiometer allows precise sensitivity adjustment for various applications.\u003c\/p\u003e\u003ch2\u003eKey Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e3.3V – 5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003eDigital (active low)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensitivity Adjustment\u003c\/td\u003e\n\u003ctd\u003eYes, via onboard potentiometer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterface\u003c\/td\u003e\n\u003ctd\u003e3-pin (VCC, GND, DO)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e32 mm × 14 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kit-motion-alarm\"\u003eMotion-activated alarm system\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003eTap-sensitive control panel\u003c\/li\u003e\n\u003cli\u003eSeismic or impact detection logger\u003c\/li\u003e\n\u003cli\u003eSmart wearable activity tracker\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility\u003c\/h2\u003e\u003cp\u003eCompatible with any 3.3V or 5V microcontroller, including Arduino Uno, Nano, ESP32, and Raspberry Pi (with level shifting for 5V tolerant pins). Connect the digital output to any GPIO pin.\u003c\/p\u003e\u003ch2\u003eWiring Notes\u003c\/h2\u003e\u003cp\u003eConnect VCC to 3.3V or 5V, GND to ground, and DO to a digital input. No external pull-up is needed; the module outputs a low signal when vibration is detected. Adjust the sensitivity screw until the desired threshold is reached.\u003c\/p\u003e\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino?\u003c\/summary\u003e\u003cp\u003eYes, it works directly with any Arduino board. Connect VCC to 5V, GND to GND, and DO to a digital pin, then read the pin state.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan I use this to detect slight movements?\u003c\/summary\u003e\u003cp\u003eYes, the onboard potentiometer allows you to increase sensitivity to detect even small vibrations, making it suitable for tap detection or tilt sensing.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat is the output when no vibration is present?\u003c\/summary\u003e\u003cp\u003eThe digital output remains high (at VCC level) when idle, and goes low when vibration exceeds the threshold, providing an active-low signal.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53444957700461,"sku":"CDN-0306","price":10.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_1593764b-8144-44d0-b238-06338149db61.jpg?v=1781512427"},{"product_id":"inductive-proximity-sensor-5mm-npn-no-ceyone-compoden","title":"Inductive Proximity Sensor 5mm NPN NO - Ceyone - Compoden","description":"\u003ch1\u003eInductive Proximity Sensor 5mm NPN NO - Ceyone\u003c\/h1\u003e\n\n\u003cp\u003eThe Ceyone Inductive Proximity Sensor detects metal objects within a 5mm range without physical contact. Featuring an NPN normally open output, it is ideal for automation, counting, and position sensing in industrial and hobbyist projects. Its robust metal housing ensures reliable performance in harsh environments.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSensing Distance\u003c\/td\u003e\n\u003ctd\u003e5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003eNPN Normally Open\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd\u003e6-36V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eHousing Material\u003c\/td\u003e\n\u003ctd\u003eNickel-plated brass\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSwitching Frequency\u003c\/td\u003e\n\u003ctd\u003e500Hz max\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eProtection\u003c\/td\u003e\n\u003ctd\u003eIP67\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eMetal object counter in production lines\u003c\/li\u003e\n  \u003cli\u003eAutomated conveyor belt metal detection system\u003c\/li\u003e\n  \u003cli\u003eRobotic arm gripping sensor for metal parts\u003c\/li\u003e\n  \u003cli\u003eGarage door vehicle detection using metal chassis\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis sensor works with Arduino, Raspberry Pi, and industrial PLCs. It requires an external pull-up resistor (10kΩ typical) when interfacing with 5V or 3.3V logic. The NPN output sinks current when metal is detected, making it compatible with most digital input circuits.\u003c\/p\u003e\n\n\u003ch2\u003eWiring Notes\u003c\/h2\u003e\n\u003cp\u003eThree-wire connection: Brown to positive supply (6-36V DC), Blue to ground, Black to NPN output. For microcontroller use, connect a pull-up resistor from the Black wire to the microcontroller’s supply voltage and read as a digital input.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\n\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\n\n\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino?\u003c\/summary\u003e\u003cp\u003eYes, it works with Arduino when using an external pull-up resistor (10kΩ) on the output line. Connect the Black wire to a digital input pin and add the resistor to VCC.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is the maximum switching frequency?\u003c\/summary\u003e\u003cp\u003eThis sensor supports up to 500Hz switching frequency, suitable for high-speed counting applications like motor RPM measurement.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan it detect non-metallic objects?\u003c\/summary\u003e\u003cp\u003eNo, inductive sensors only detect ferrous and non-ferrous metals. It will not respond to plastic, wood, or liquids.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53444957765997,"sku":"CDN-0301","price":270.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_fb933700-8de8-421d-924e-1d7e671b5111.jpg?v=1781512428"},{"product_id":"d203b-dual-element-pir-sensor-for-alarm-systems","title":"D203B Dual Element PIR Sensor for Alarm Systems","description":"\u003ch1\u003eD203B Dual Element PIR Sensor for Motion Detection\u003c\/h1\u003e\n\n\u003cp\u003eThe D203B is a dual-element passive infrared (PIR) sensor designed for motion detection in alarm systems and automation projects. It detects changes in infrared radiation emitted by moving objects like people or animals, providing a digital output when motion is sensed. With high sensitivity and low power consumption, it's ideal for battery-powered security devices.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd\u003e3V - 6V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDetection Range\u003c\/td\u003e\n\u003ctd\u003e3 - 7 meters\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDetection Angle\u003c\/td\u003e\n\u003ctd\u003e110°\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOutput Signal\u003c\/td\u003e\n\u003ctd\u003eDigital high\/low (3.3V TTL)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-20°C to +70°C\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eHome intrusion alarm with buzzer and LED indicator\u003c\/li\u003e\n  \u003cli\u003eAutomatic room light controller\u003c\/li\u003e\n  \u003cli\u003eSmart IoT motion notifier using ESP8266\u003c\/li\u003e\n  \u003cli\u003ePet detection system for automatic feeders\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis PIR sensor works seamlessly with any microcontroller that accepts 3.3V or 5V logic, including Arduino Uno, ESP32, and Raspberry Pi. It is commonly paired with relay modules to control lights, or with wireless modules for remote alerts.\u003c\/p\u003e\n\n\u003ch2\u003eWiring Notes\u003c\/h2\u003e\n\u003cp\u003eConnect VCC to 5V (or 3.3V), GND to ground, and OUT to a digital input pin. No external pull-up or pull-down is required as the sensor output is active high. Some modules include a sensitivity adjustment potentiometer and a delay timer; adjust according to your application.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\n\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\n\n\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino?\u003c\/summary\u003e\u003cp\u003eYes, simply connect OUT to any digital input pin and read the state. No additional library is required.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is the detection range?\u003c\/summary\u003e\u003cp\u003eThe D203B typically detects motion from 3 to 7 meters, depending on the environment and the sensitivity setting.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDoes it work with battery-powered projects?\u003c\/summary\u003e\u003cp\u003eAbsolutely. With a quiescent current under 50µA, it's well-suited for low-power applications using 3V to 6V batteries.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53444957995373,"sku":"CDN-0310","price":60.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_043e460c-0181-4880-885f-6e4f49bdced8.jpg?v=1781512433"}],"url":"https:\/\/compoden.com\/collections\/sensors.oembed?page=3","provider":"Compoden","version":"1.0","type":"link"}