{"product_id":"photoelectric-encoder-coded-disc-code-wheel-compoden","title":"Photoelectric Encoder Coded Disc Code Wheel - Compoden","description":"\u003ch1\u003ePhotoelectric Encoder Coded Disc Code Wheel for Precision Speed Sensing\u003c\/h1\u003e\n\u003cp\u003eThe Photoelectric Encoder Coded Disc Code Wheel is an optical rotary encoder disc designed for use with photoelectric sensors to measure rotational speed and angular position. It features a precision-printed pattern of alternating transparent and opaque segments that generate digital pulses when passed through an optical slot sensor. This code wheel is ideal for DIY robotics, motor control, and tachometer projects requiring accurate RPM measurement.\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\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003ePolyester film (PET)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOuter Diameter\u003c\/td\u003e\n\u003ctd\u003e30 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCenter Hole Diameter\u003c\/td\u003e\n\u003ctd\u003e5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSlot\/Window Count\u003c\/td\u003e\n\u003ctd\u003e100\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSlot Width\u003c\/td\u003e\n\u003ctd\u003e0.5 mm\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\u003eDIY Tachometer using Arduino and OLED display\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/kit-motor-pid-speed-controller\"\u003eMotor Speed Controller with PID feedback\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003eRotary Encoder for CNC machine position feedback\u003c\/li\u003e\n  \u003cli\u003eOdometer for robotic wheel rotations\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis code wheel pairs perfectly with optical slot sensors like the ITR9608 or TCRT5000, commonly used with 5V microcontrollers such as Arduino Uno, Nano, and ESP32. For 3.3V boards like Raspberry Pi Pico or ESP8266, ensure the sensor's output is level-shifted. It can be used with any photoelectric encoder module that supports a slotted disc.\u003c\/p\u003e\n\n\u003ch2\u003eWiring Notes\u003c\/h2\u003e\n\u003cp\u003eConnect the photoelectric sensor's VCC to 5V, GND to ground, and signal pin to a digital input on your microcontroller. Use a pull-up resistor (10kΩ) on the signal line if the sensor has an open-collector output. Ensure the code wheel is securely mounted on the motor shaft and aligned with the sensor gap.\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, this code wheel works with Arduino when paired with an optical slot sensor like TCRT5000. The sensor's digital output connects directly to any digital pin for pulse counting.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow do I calculate RPM with this?\u003c\/summary\u003e\u003cp\u003eCount the pulses over a fixed time interval; RPM = (pulses \/ slots_per_revolution) * (60 \/ time_seconds). For a 100-slot disc, divide pulse count by 100 and multiply by 60 for 1-second intervals.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDoes this come with a sensor?\u003c\/summary\u003e\u003cp\u003eNo, this listing includes only the code wheel disc. You will need a separate photoelectric slot sensor module, which is widely available.\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":53444955308397,"sku":"CDN-0268","price":400.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_2f8b80f9-a1ae-477a-b025-68742013d45c.jpg?v=1781512367","url":"https:\/\/compoden.com\/products\/photoelectric-encoder-coded-disc-code-wheel-compoden","provider":"Compoden","version":"1.0","type":"link"}