The FC‑51’s simplicity and low cost open the door to a very wide range of projects.
| FC‑51 Pin | Arduino Pin | | :--- | :--- | | VCC | 5V or 3.3V | | GND | GND | | OUT | Any digital GPIO (e.g., D2, D8) | fc 51 ir sensor datasheet hot
The module emits infrared light via the . If an object is within range, the light reflects back to the receiver LED (phototransistor). The LM393 comparator compares the received signal against a threshold set by the onboard potentiometer . When an obstacle is detected, the green indicator LED lights up and the OUT pin pulls LOW . The FC‑51’s simplicity and low cost open the
Download the generic “FC-51 Infrared Obstacle Avoidance Sensor User Manual” from LCSC or Mouser. Then print this article and attach it as a thermal performance addendum to your lab notebook. The LM393 comparator compares the received signal against
Features an onboard potentiometer to calibrate sensitivity and distance.
Point the sensor toward a clear space with no obstacles within 50cm.
Using the FC-51 IR sensor is relatively straightforward. Here's a step-by-step guide: