Infrared Obstacle Avoidance IR Sensor Module

Infrared Obstacle Avoidance IR Sensor Module is a versatile and essential component for building smart, autonomous robotics and automation projects. This simple yet effective module uses an infrared (IR) transmitter and receiver pair to detect the presence of objects within a short, adjustable range. When the transmitted IR light reflects off an object and returns to the receiver, the module outputs a digital low signal, instantly notifying your microcontroller (like Arduino or Raspberry Pi) of the obstacle. You can easily adjust the sensitivity and detection distance using the on-board potentiometer. This sensor is crucial for equipping mobile robots with the ability to safely navigate environments, making it an indispensable tool for hobbyists, students, and professional developers alike.

Key Features:

• Adjustable Detection Range: The on-board precision potentiometer lets you fine-tune the detection distance according to your specific application requirements.
• Digital Output: Provides a straightforward digital signal (High/Low), making interfacing with microcontrollers incredibly simple without the need for complex analog-to-digital conversion.
• Integrated LED Indicators: Includes a power LED and a detection indicator LED that lights up when an obstacle is sensed, simplifying testing and debugging.
• Compact and Lightweight Design: The small PCB footprint allows for easy integration into space-constrained projects like small robot chassis or drones.
• Wide Voltage Compatibility: Operates reliably across a common voltage range, typically from 3.3V to 5V DC, suitable for most popular microcontrollers.

Technical Specifications:

• Operating Voltage: 3.3 V DC to 5 V DC
• Detection Range: Typically 2 cm to 30 cm (Adjustable)
• Signal Type: Digital Output (Active Low when obstacle detected)
• Output High Voltage: VCC (Supply Voltage)
• Output Low Voltage: ≈ 0 V

Mechanical Specifications:

• Sensor Type: Infrared Reflective (Emitter and Receiver)
• Adjuster: Single Turn Potentiometer (for sensitivity/range)
• Mounting: Single fixing bolt hole for easy installation onto a robot chassis or platform.

Dimensions:

• Module Size (L x W): ≈ 32 mm x 14 mm
• Mounting Hole Diameter: ≈ 3.0 mm
• Weight: ≈ 3 g to 5 g

Pinout and Wiring:

• VCC: Connect the module to the positive power supply (3.3V or 5V DC).
• GND: Connect the module to the ground (0V) of the power supply and microcontroller.
• OUT (Signal Output): Connect this pin to a digital input pin on your microcontroller to read the detection status.

Datasheet Reference:

• Download IR Obstacle Sensor User Guide

Commonly Used in:

• Entry-Level Robotics Kits: A fundamental sensor for teaching basic concepts of autonomous navigation.
• Maze Solving Robots: Installed on the front or sides to detect walls and boundaries.
• Automated Doors and Gates: Used as a simple proximity switch to detect incoming objects or people.

Applications:

• Obstacle Avoidance: Equipping mobile robots (like line followers or vacuum bots) with collision prevention capabilities.
• Proximity Sensing: Detecting when a hand or object is close to a switch or device.
• Counting Mechanisms: Used on conveyor belts to count items as they pass the sensor’s field of view.

Equivalent Models:

• Sharp GP2Y0Axx Analog Distance Sensors: Provide a more stable, analog voltage output proportional to distance, suitable for precise ranging.
• Ultrasonic HC-SR04 Module: Offers a longer detection range (up to 4 meters) but may be less accurate on soft or angled surfaces.
• Time-of-Flight (ToF) Sensors: Premium sensors offering highly accurate distance measurements regardless of object color or light intensity.

Package Includes:

• 1 x Infrared Obstacle Avoidance IR Sensor Module