IR Obstacle Avoidance Sensor Module

How it Works

1. Emission: An IR LED sends out invisible infrared light beams.
2. Reflection: If an object is in the path, the IR light bounces off it.
3. Detection: An IR receiver detects the reflected light.
4. Processing: An onboard comparator (like LM393) processes the signal.
5. Output: A digital signal is sent; often LOW (0V) for an obstacle and HIGH (5V) for clear, triggering an indicator LED.

Key Features & Specs

• Components: IR Emitter, IR Receiver, Comparator, Potentiometer, Indicator LED.
• Voltage: Typically 3.3V – 5V DC.
• Detection Range: Adjustable, often 2cm to 30cm or more (e.g., 2-80cm).
• Angle: Around 35 degrees.
• Output: Digital (TTL level), sometimes Active LOW.
• Adjustment: Potentiometer knob to fine-tune sensitivity/distance (clockwise increases, counter-clockwise decreases).

Common Uses

• Robotics (obstacle avoidance, line following).
• DIY Smart Cars.
• Assembly Line Counting.
• Automation Projects.