Fc 51 Ir Sensor Datasheet [hot] Jun 2026

int sensorPin = 2; int ledPin = 13; int sensorState = 0;

An infrared LED that emits light at a specific wavelength (usually 940nm). Fc 51 Ir Sensor Datasheet

The FC-51 is an analog/digital infrared (IR) sensor module designed for short-range obstacle detection (2 cm to 30 cm). Unlike Sharp GP2Y0 series sensors (which give analog distance values), the FC-51 typically outputs a simple (HIGH/LOW) when an object is within a preset threshold. int sensorPin = 2; int ledPin = 13;