Datasheet ~repack~ - Fc 51 Ir Sensor

The is a cheap, widely available active infrared proximity sensor used heavily in robotics and automation. It operates as a simple binary switch, outputting a LOW or HIGH digital signal depending on whether it detects reflected light from an object.

: 4.5/5

int sensorValue = 0; int objectDetected = false; Fc 51 Ir Sensor Datasheet

Look at the silkscreen on the PCB. Most modules are labeled "FC-51" and have pins marked as + , OUT , - or similar. Use a continuity tester to confirm ground connections. The is a cheap, widely available active infrared

Note on 4-pin versions: Some FC-51 modules break out an additional pin, which provides the raw analog voltage from the phototransistor before it goes into the comparator. This can be used for measuring distance more precisely. Most modules are labeled "FC-51" and have pins

: Helping vehicles navigate without hitting walls.

| FC-51 Pin | Arduino Pin | | :--- | :--- | | VCC | 5V | | GND | GND | | OUT | Digital Pin 2 (or any digital input pin) |