Fc 51 Ir Sensor Datasheet ((full))

The FC-51 IR sensor is a versatile and low-cost infrared obstacle avoidance module widely used in robotics, security systems, and DIY electronics. This module, often referred to as the "Flying Fish" sensor, uses a pair of infrared emitting and receiving tubes to detect obstacles within a range of approximately 2 cm to 30 cm. FC-51 Technical Specifications

By referencing this FC-51 IR Sensor Datasheet, you now have the complete technical picture: pinouts, voltage limits, range adjustment, code examples, and troubleshooting. Whether you’re building a line-following robot, a contactless switch, or a factory counter, the FC-51 offers a straightforward “detect or not detect” solution that integrates with almost any microcontroller. Fc 51 Ir Sensor Datasheet

int sensorPin = 2;
int ledPin = 13;
Q3: How to get an analog output from FC-51?
A: If your module has an AOUT pin, read it using an ADC pin. If not, you can solder a wire directly to the phototransistor's collector or the comparator's non-inverting input. The FC-51 IR sensor is a versatile and
The physical PCB board hosts several distinct elements designed to assist in calibration:   distance with ir sensor fc-51 - Arduino Forum Vcc → 5 V GND → GND OUT
Typical wiring (to microcontroller)

Vcc → 5 V
GND → GND
OUT → digital input (with optional pull-up if needed)
If analog output present → analog input for distance/reflectivity approximate measurement