Fc 51 Ir Sensor Datasheet Info

If no obstacle is present, the light radiates outward and dissipates. When an object passes in front of the sensor, the IR light bounces off the object's surface.

The reflected IR light is captured by the onboard IR receiver (a black photodiode).

If the reflected light exceeds the set threshold, the comparator triggers the output, turning the OUT pin Low and lighting the green indicator LED. 4. Key Features and Adjustment Fc 51 Ir Sensor Datasheet

led_onboard = Pin(25, Pin.OUT, value=0)

void loop() int sensorValue = digitalRead(sensorPin); // Read the sensor If no obstacle is present, the light radiates

Adjustable from 2cm to 30cm (some variants reach up to 80cm). Detection Angle: Approximately 35°.

The FC-51 IR sensor is a compact, low-cost infrared sensor module that detects the presence of objects or people within a certain range. It consists of an infrared LED, a photodiode, and an amplifier circuit, all integrated into a single module. The sensor operates on the principle of infrared radiation, which is emitted by all objects at temperatures above absolute zero. If the reflected light exceeds the set threshold,

The module typically includes an IR emitter (LED), an IR receiver (photodiode), an LM393 comparator chip, and a potentiometer for sensitivity adjustment.

Lights up immediately when power is supplied to the VCC and GND pins.

The FC-51 IR sensor has three pins:

: The receiver tube picks up these reflected waves.