The IR Obstacle Avoidance Sensor Module is a compact and reliable sensor designed to detect nearby objects using infrared (IR) reflection technology.
It consists of an IR emitter LED and a photodiode receiver, combined with an onboard LM393 comparator to provide a stable digital output signal (HIGH/LOW) when an obstacle is detected.
The module features an adjustable potentiometer that allows precise tuning of the detection range and sensitivity, making it ideal for robotics, automation, and Arduino-based projects.
⸻
Key Features
• Infrared-based object detection
• Adjustable detection range via potentiometer
• Digital output (HIGH/LOW signal)
• Fast response time
• Built-in comparator (LM393)
• Power indicator LED + detection LED
• Compact and lightweight design
• Easy integration with Arduino & microcontrollers
⸻
Technical Specifications
• Operating Voltage: 3.3V – 5V DC
• Operating Current: ~20 mA
• Detection Method: Infrared reflection
• Detection Distance: approx. 2 cm – 30 cm
(adjustable)
• Output Type: Digital (DO)
• Comparator IC: LM393
• Response Time: Less than 2 ms
• Detection Angle: ~35°
• Operating Temperature: -10°C to +50°C
• Dimensions: approx. 45 × 12 mm
⸻
Pin Configuration
• VCC: Power supply (3.3V–5V)
• GND: Ground
• OUT: Digital output (LOW when obstacle detected, typically)
⸻
Key Advantages
• Simple digital interface (no complex coding required)
• Adjustable sensitivity for different environments
• Low power consumption
• Fast and reliable detection
• Very cost-effective solution for robotics
⸻
Typical Applications
• Line follower robots
• Obstacle avoidance robots
• Smart cars / robotic vehicles
• Object detection systems
• Automation and counting systems
• DIY Arduino projects
• Industrial proximity detection (basic)