Fc 51 Ir Sensor Datasheet

The is an affordable, highly efficient electronic module widely used in robotics, automation, and smart home projects. Utilizing infrared (IR) light, this active sensor detects objects within its line of sight, making it a staple for autonomous navigation and proximity sensing.

When an object or obstacle enters the sensor's field of view, the emitted IR light bounces off the surface of the object.

The FC-51 operates on a simple active infrared reflection principle. It pairs an infrared transmitter with a receiver to detect proximity. Core Electrical Parameters 3.3V to 5V DC Operating Current: ≥is greater than or equal to Fc 51 Ir Sensor Datasheet

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.

Whether you are building a line-following robot, a proximity-based alarm, or a contactless tachometer, you will likely encounter the FC-51 module. However, to harness its full potential, one must understand its technical specifications, pin configuration, working principle, and interfacing details—all of which are found in its official . The is an affordable, highly efficient electronic module

void setup() pinMode(sensorPin, INPUT); pinMode(ledPin, OUTPUT); Serial.begin(9600);

Direct sunlight or strong incandescent lighting contains high levels of infrared radiation. This environmental IR noise can saturate the photodiode, leading to false triggers. It is best used indoors or in shaded enclosures. The FC-51 operates on a simple active infrared

The FC-51 features a small, blue potentiometer (variable resistor) on the back of the PCB. Turning this potentiometer changes the comparator’s reference voltage, effectively adjusting the sensitivity.