The onboard photodiode receives the reflected IR light. Its resistance drops as the intensity of the received IR light increases.
Mounted on the front or sides of autonomous rovers to prevent collisions.
The onboard infrared transmitting diode constantly emits invisible infrared light waves at a specific frequency. Fc 51 Ir Sensor Datasheet
Because the sensor relies on light reflection, its effective range is highly dependent on the target object's color and texture.
Positioned across conveyor belts to count passing items as they break the IR beam. The onboard photodiode receives the reflected IR light
Used in automated washroom dispensers, automatic doors, or touch-free trash cans.
The following sketch reads the digital state of the FC-51 sensor and prints the detection status to the Serial Monitor. It also toggles the Arduino's built-in LED (Pin 13) when an obstacle is detected. Used in automated washroom dispensers, automatic doors, or
def switching(): # Toggle the LED state led_onboard.toggle()