Keep ambient IR low, adjust the potentiometer for your target reflectivity, and always confirm the pinout before powering up.

Introduction In the world of embedded systems and robotics, few components are as ubiquitous or as essential as the infrared proximity sensor. Among the myriad of options available, the FC-51 IR Sensor stands out as a favorite for hobbyists and professionals alike. It is cheap, reliable, easy to interface with microcontrollers like Arduino, Raspberry Pi, and ESP32, and incredibly effective for non-contact object detection.

delay(50);

Fc 51 Ir Sensor Datasheet May 2026

Keep ambient IR low, adjust the potentiometer for your target reflectivity, and always confirm the pinout before powering up.

delay(50);