Fc 51 Ir Sensor Datasheet -

FC-51 IR Obstacle Sensor

The is a cheap, widely available active infrared proximity sensor used heavily in robotics and automation. It operates as a simple binary switch, outputting a LOW or HIGH digital signal depending on whether it detects reflected light from an object.

if (sensorValue == HIGH) { // Object detected Fc 51 Ir Sensor Datasheet

OUT

: Digital output pin that provides a signal based on detection status. Working Principle FC-51 IR Obstacle Sensor The is a cheap,

Detection Type

| Feature | FC-51 | HC-SR04 (Ultrasonic) | TCRT5000 (Reflective) | | :--- | :--- | :--- | :--- | | | IR reflection | Sound wave echo | IR reflection | | Output | Digital (HIGH/LOW) | Analog (PWM width) | Analog/Digital (with add-on) | | Max Range | ~30 cm | ~400 cm | ~10 cm | | Color Sensitive? | Yes (dark objects reduce range) | No | Yes | | Cost | Very low ($1-2) | Low ($2-4) | Very low ($0.5-1) | | Best Use | Proximity switch, line follow (short range) | Distance measurement | Line following (very short) | Working Principle Detection Type | Feature | FC-51

The FC-51 module is compact and features a small number of components. Understanding the layout is crucial for correct wiring.