Fc 51 Ir Sensor Datasheet Hot |work| -

Features an onboard potentiometer to adjust the detection range based on the environment.

The FC-51 is a popular, low-cost infrared proximity sensor used for obstacle detection in robotics. Specification 3.3V – 5.0V DC Operating Current ≥20is greater than or equal to 20 Detection Distance 2cm – 30cm (Adjustable via potentiometer) Detection Angle 35∘35 raised to the composed with power Output Type Digital signal (0 or 1) Output Level Low (0V) when obstacle detected; High (VCC) when clear IC Chip LM393 Comparator Pin Configuration VCC : External 3.3V-5V voltage. GND : External ground. OUT : Digital output interface (connects to MCU I/O). How it Works fc 51 ir sensor datasheet hot

is not a red flag—it’s a yellow one. Features an onboard potentiometer to adjust the detection

void loop() int sensorValue = digitalRead(sensorPin); GND : External ground

When the sensor detects an obstacle, the pin pulls to LOW (0V) . When the path is clear, the OUT pin goes HIGH (5V) . This logic is inverted compared to some other sensors, so code must account for a LOW signal representing a detection event.

As they worked, they stumbled upon an obscure forum post from a robotics enthusiast who had encountered a similar problem. The user, 'ElectroGuru,' had shared a modified datasheet with additional thermal characteristics, which seemed to match the FC-51's behavior.