IR Obstacle Avoidance Sensor Module
The IR Obstacle Avoidance Sensor is a versatile and low-cost proximity module available at RoboShop BD. It uses a pair of infrared emitting and receiving tubes to detect objects in its path. When the infrared light hits an obstacle, it reflects back to the receiver, triggering a digital output signal. With its adjustable sensitivity and compact design, it is the primary choice for line-following robots, DIY security systems, and industrial object counters.
40.00৳ 60.00৳
Precision Obstacle Detection
The module operates by emitting a beam of infrared radiation. If an object is within the detection range, the IR light bounces off the surface and is captured by the onboard photodiode. An LM393 voltage comparator chip then processes this signal, providing a clean, stable digital output. At RoboShop BD, we recommend this sensor for indoor robotics because it is specifically designed to be resistant to interference from ambient light.
Custom Sensitivity
Every environment is different, which is why this module features a multi-turn potentiometer. By turning the screw, you can fine-tune the detection distance from 2cm to 30cm, allowing you to calibrate the sensor for different surface reflectivities (e.g., detecting a white line vs. a black floor). It features two onboard LEDs: one for power and one that illuminates the moment an obstacle is detected, making debugging your code much easier.
Key Features
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Digital Output: Simple High/Low signal (Active Low) for easy microcontroller interfacing.
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Adjustable Range: Potentiometer allows for precise sensitivity tuning.
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Wide Voltage Range: Works perfectly with both 3.3V and 5V systems like Arduino and ESP32.
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Dual LED Indicators: Visual feedback for power status and object detection.
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35° Detection Angle: Focused beam to prevent false triggers from the periphery.
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Easy Mounting: Includes a 3mm screw hole for secure attachment to robot chassis.
Technical Specifications
| Specification | Details |
| Operating Voltage | 3.3V – 5.0V DC |
| Detection Range | 2 cm – 30 cm (Adjustable) |
| Detection Angle | ~35° |
| Comparator IC | LM393 |
| Output Type | Digital (LOW when obstacle detected) |
| Current Consumption | ~20mA |
| Dimensions | 31mm x 15mm |
| Operating Temp | -10°C to +50°C |
Pinout Configuration
| Pin | Name | Function |
| 1 | VCC | Power Supply (3.3V – 5V) |
| 2 | GND | System Ground |
| 3 | OUT | Digital Output (Connect to MCU I/O) |
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