FC-51 Infrared Obstacle Avoidance IR Sensor Module

FC-51 Infrared Obstacle Avoidance Sensor Module – IR-Based Object Detection for Arduino and Robotics

The FC-51 IR Sensor Module is a compact and cost-effective infrared obstacle detection sensor used in robotics, automation, and smart systems. It emits infrared light and detects reflected signals to identify objects in front of it. When an object is detected within a set range, the module outputs a digital LOW signal.

With adjustable sensitivity and easy 3-pin interfacing, the FC-51 is perfect for Arduino, ESP32, and other microcontrollers. It is widely used in line-following robots, anti-collision systems, smart cars, and IoT automation projects across Bangladesh.

Key Features:

• Operating Voltage: 3.3V – 5V DC

• Detection Range: ~2cm – 30cm (adjustable)

• Output: Digital (LOW when obstacle detected)

• Adjustable sensitivity via onboard potentiometer

• IR transmitter and receiver pair

• Simple 3-pin connection (VCC, GND, OUT)

• Low power and compact design

Applications:

• Obstacle avoidance in robots and cars

• Line-following and edge-detection systems

• Smart automation and motion detection

• DIY electronics and educational projects in Bangladesh

• Basic anti-theft and alert systems

The FC-51 IR Sensor Module is a lightweight and versatile solution for detecting obstacles and enhancing the intelligence of robotics and embedded systems.