{"product_id":"capacitive-soil-moisture-sensor-v20-corrosion-resistant-analog-probe","title":"Capacitive Soil Moisture Sensor V2.0 – Corrosion-Resistant Analog Probe","description":"\u003ch1\u003eCapacitive Soil Moisture Sensor V2.0 – Corrosion-Resistant Analog Output\u003c\/h1\u003e\u003cp\u003eThe Capacitive Soil Moisture Sensor V2.0 measures soil moisture by detecting changes in capacitance, not resistance, making it resistant to corrosion. It outputs an analog voltage that corresponds to the moisture level, suitable for microcontrollers with ADC inputs. This sensor is ideal for automated irrigation, plant monitoring, and smart agriculture projects.\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 – 5.5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Signal\u003c\/td\u003e\n\u003ctd\u003eAnalog (0V – 3.0V at 3.3V supply)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor Type\u003c\/td\u003e\n\u003ctd\u003eCapacitive (non-corrosive)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterface\u003c\/td\u003e\n\u003ctd\u003e3-pin header (VCC, GND, AOUT)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e98mm × 23mm × 6mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e15g\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-automatic-plant-watering-system\"\u003eAutomatic plant watering system with Arduino and pump\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003eSoil moisture monitoring dashboard with ESP32 and Blynk\u003c\/li\u003e\n\u003cli\u003eSmart garden with Raspberry Pi and relay control\u003c\/li\u003e\n\u003cli\u003eLow-power wireless sensor node for agriculture\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility\u003c\/h2\u003e\u003cp\u003eThis sensor works with any microcontroller that supports analog input, such as Arduino Uno, Nano, Mega, ESP32, ESP8266, and STM32 boards. For Raspberry Pi, pair it with an external ADC like the MCP3008. It operates at both 3.3V and 5V logic levels, with no level shifting required.\u003c\/p\u003e\u003ch2\u003eWiring Notes\u003c\/h2\u003e\u003cp\u003eConnect VCC to 3.3V or 5V, GND to ground, and AOUT to an analog input pin. For Raspberry Pi, use an MCP3008 ADC and connect the sensor output to one of its analog channels. No pull-up resistor is needed; the analog signal directly corresponds to moisture.\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 AOUT to any analog pin (A0-A5 on Uno) and read the voltage using analogRead(). The sensor provides an output voltage proportional to moisture.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan this sensor be left in soil permanently?\u003c\/summary\u003e\u003cp\u003eIts capacitive design resists corrosion, but avoid submersion in water. For long-term deployment, protect the electronics with conformal coating and ensure the PCB edge is not continuously wet.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eHow accurate is the moisture reading?\u003c\/summary\u003e\u003cp\u003eThe sensor provides a relative measurement; the analog value varies from dry (low) to wet (high). For absolute accuracy, calibrate by taking readings in completely dry and saturated soil, then map the range in your code.\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":53445016224109,"sku":"CDN-0699","price":55.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_855caa6c-44bc-4863-99f7-9c8778964a2b.jpg?v=1781512824","url":"https:\/\/compoden.com\/products\/capacitive-soil-moisture-sensor-v20-corrosion-resistant-analog-probe","provider":"Compoden","version":"1.0","type":"link"}