Fc 51 Ir Sensor Datasheet |top| Online

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void setup() pinMode(irSensorPin, INPUT); pinMode(ledPin, OUTPUT); Serial.begin(9600); Serial.println("FC-51 Obstacle Detector Ready");

It uses an LM393 comparator for stable, fast performance, which is often quicker than ultrasonic sensors for simple binary obstacle detection. Fc 51 Ir Sensor Datasheet

Here are the standard ways to wire it to popular development boards:

Absorb IR light. A matte black object may need to be significantly closer to the sensor to trigger a detection, a characteristic often exploited in line-following robots. Arduino Interfacing Guide This public link is valid for 7 days

The object might be outside the sensor's maximum range, or the object is too dark (absorbing the IR light). Try adjusting the potentiometer clockwise or testing with a piece of white paper.

The electrical and mechanical parameters of the FC-51 module include: Value / Range 3.3V to 5.0V DC Operating Current ≥is greater than or equal to Detection Distance 2cm to 30cm (Adjustable via potentiometer) Detection Angle Output Type Can’t copy the link right now

The onboard IR transmitter constantly emits invisible infrared light waves into the surrounding environment.

The FC-51 module works on the principle of .

Digital signal (LOW when an obstacle is detected, HIGH when clear) Onboard IC: LM393 Dual Differential Comparator Dimensions: 3.2cm × 1.4cm Mounting Hole Size: 3mm (for easy chassis installation) Pin Configuration and Functionality