Fc 51 Ir Sensor Datasheet Jun 2026

: Digital output pin that provides a signal based on detection status. Working Principle

2cm to 30cm (Adjustable via onboard potentiometer) Detection Angle: 35° Fc 51 Ir Sensor Datasheet

The FC-51 module almost always comes with a standard 3-pin male header (0.1" spacing). However, found in the wild. Always verify with a multimeter before connecting. : Digital output pin that provides a signal

The FC-51 module houses an onboard or a standard LM393 voltage comparator IC, alongside an IR emitter and receiver pair. Always verify with a multimeter before connecting

White and light-colored surfaces reflect IR light exceptionally well, maximizing range. Black or dark surfaces absorb IR light, severely reducing the detection distance (sometimes down to less than a centimeter).

The LM393 comparator compares the voltage from the photodiode against a reference voltage set by the onboard potentiometer.

The FC-51 sensor contains two primary optical components: an and an IR Receiver (Photodiode) . FC-51 IR Proximity Sensor - am I doing it wrong?