Understanding the output logic is crucial for programming. The FC-51 outputs a . By default (most modules), the logic is:
The 3-pin interface (VCC, GND, OUT) is straightforward for beginners. You can connect the OUT pin directly to a microcontroller's I/O or a 5V relay. Fc 51 Ir Sensor Datasheet
This article serves as your complete . We will cover everything from technical specifications and pin configuration to wiring diagrams, calibration, troubleshooting, and sample code. Understanding the output logic is crucial for programming
void setup() pinMode(irSensorPin, INPUT); pinMode(ledPin, OUTPUT); Serial.begin(9600); Serial.println("FC-51 Obstacle Detector Ready"); and sample code. void setup() pinMode(irSensorPin
A: You may have set the sensitivity too high. The sensor is detecting the floor or table surface. Turn the potentiometer counter-clockwise until the detection stops.