Think of the FC-51 as a digital gatekeeper. It doesn't tell you an object is; it just tells you something is there. distance with ir sensor fc-51 - Arduino Forum
Mounted on the front or sides of autonomous rovers to prevent collisions.
In the world of embedded systems and robotics, few components are as ubiquitous or as essential as the infrared proximity sensor. Among the myriad of options available, the stands out as a favorite for hobbyists and professionals alike. It is cheap, reliable, easy to interface with microcontrollers like Arduino, Raspberry Pi, and ESP32, and incredibly effective for non-contact object detection.
The module features a small, single-turn potentiometer (trimpot) located on the PCB. Fc 51 Ir Sensor Datasheet
If the reflected light is strong enough (meaning an object is close), the comparator pulls the Output (OUT) pin LOW (0V) . When no obstacle is detected, the OUT pin remains HIGH (VCC) . Technical Specifications Value / Range Operating Voltage 3.3V to 5.0V DC Operating Current Detection Distance 2cm to 30cm (Adjustable via potentiometer) Detection Angle Output Type Digital signal (Built-in comparator output) Output Level TTL level (Low when obstacle detected, High when clear) Comparator IC Dimensions 3.2cm × 1.4cm Mounting Hole Size Pinout Configuration
The FC-51 is an , designed primarily for obstacle detection and proximity sensing . It is highly popular in the maker and robotics community due to its low cost, ease of use, and simple digital interface. The module is frequently used in DIY electronics, microcontroller projects, and educational settings.
This article provides a detailed overview of the FC-51 IR sensor datasheet, including its technical specifications, pinout, working principle, and practical application examples. 1. FC-51 Sensor Technical Specifications Think of the FC-51 as a digital gatekeeper
2cm to 30cm (Adjustable via onboard potentiometer) Detection Angle: 35°
The FC-51 is very straightforward to use with any Arduino board.
The module typically features a 3-pin header for easy interfacing: Connect to 3.3V - 5V power source. GND: Connect to the circuit ground. In the world of embedded systems and robotics,
The FC-51 module consists of an infrared transmitter (IR LED) and an infrared receiver (photodiode) paired with an LM393 voltage comparator integrated circuit (IC).
Infrared LED emitter, Photodiode receiver, and an LM393 Voltage Comparator IC . 🔌 Pinout Configuration
: Digital output pin that provides a signal based on detection status. Working Principle