Description:
IR Infrared Sensor Module Reflective Photoelectric Light Intensity Sensor for Arduino UNO & DIY Electronics Projects is a compact sensing module designed to detect nearby objects by using reflected infrared light. It provides a simple way to add obstacle detection and object sensing to robotics, automation and DIY electronics projects.
When a robot needs to know whether an object is directly in front of it, the module uses an infrared transmitter and receiver to detect reflected IR light from nearby surfaces. An onboard comparator processes the received signal and provides a digital output when an object is detected. The built-in green indicator LED also provides a visual indication during testing and operation.
The module uses a convenient 3-wire interface — VCC, GND and OUT — making it easy to connect with Arduino UNO, ESP32, Raspberry Pi, STM32 and other compatible microcontrollers. Its support for 3.3V and 5V operation makes it suitable for a variety of development platforms.
It can be used for robot obstacle avoidance, object detection, line-following projects, automation systems, smart devices and educational electronics where simple infrared sensing is required.
Specifications:
| Specification | Details |
|---|---|
| Item Type | Infrared Sensor |
| Model Type | IR Sensor Module |
| Main Chip | LM393 Comparator |
| Operating Voltage | 3.6V–5V DC |
| Average Current Consumption | 0.06 mA |
| Detection Angle | 35° |
| Detection Distance | 2–30 cm |
| Sensing Method | Infrared Reflective Detection |
| Output | Digital Sensor Output |
| Interface | VCC, GND, OUT |
| Indicator | Green LED Indicator |
| Applications | Obstacle Detection, Robotics, Automation & DIY Electronics |
Features:
| Feature | Details |
|---|---|
| Easy to Install & Use | Simple module design makes it convenient to connect and use in Arduino, robotics and DIY electronics projects. |
| Built-in Detection Indicator | Onboard LED provides a clear visual indication when an object is detected. |
| Obstacle Detection | Designed for reflective infrared object detection within the specified sensing range. |
| Adjustable Sensitivity | Built-in preset potentiometer allows the detection sensitivity to be adjusted according to the project requirements. |
| LED Detection Indication | The indicator LED turns ON when the module detects a nearby obstacle, making testing and troubleshooting easier. |
| LM393 Comparator | Uses an LM393 comparator circuit to process the infrared sensor signal and provide a digital output. |
| 3-Wire Interface | Simple VCC, GND and OUT connections make integration with compatible microcontrollers straightforward. |
| Compact Design | Small module format is suitable for robotics, automation, prototyping and educational electronics applications. |
Applications:
- Obstacle Avoidance Robots Detect nearby objects and help robots change direction or stop when an obstacle is encountered.
- Line-Following Robots Use infrared reflection sensing as part of robotic navigation and object-detection systems.
- Arduino Projects Add simple infrared object detection to Arduino UNO and other compatible development boards.
- Raspberry Pi Projects Integrate the sensor into basic object detection and automation projects.
- Smart Automation Detect the presence of objects for triggering automated actions.
- Object Detection Systems Identify nearby objects in DIY electronic devices and prototypes.
- Industrial Automation Prototypes Use for basic object presence detection in automation experiments.
- Robotics Projects Add proximity sensing capabilities to autonomous and remote-controlled robots.
- DIY Electronics Suitable for experimenting with infrared reflection, digital outputs and sensor interfacing.
- Educational Projects Useful for learning about IR sensors, LM393 comparators and microcontroller-based object detection.
Safety Precautions:
- Use the Correct Voltage – Operate the module within its specified 3.6V–5V DC supply range to prevent damage to the sensor and LM393 circuit.
- Check Wiring Before Powering – Ensure the VCC, GND and OUT connections are correctly connected to the microcontroller before switching on the power.
- Avoid Direct Sunlight & Strong IR Sources – Strong infrared light or direct sunlight may interfere with reflective sensing and affect detection performance.
- Keep the Sensor Clean – Dust, dirt or other particles on the infrared transmitter and receiver can reduce sensing reliability. Clean the sensor gently when required.
- Adjust Sensitivity Carefully – Turn the onboard potentiometer gradually while testing the required detection distance to avoid unstable or unwanted detection.
Frequently Asked Questions ( FAQs )
1. What is this IR Infrared Sensor Module used for?
This module is used for detecting nearby objects by sensing reflected infrared light. It is commonly used in obstacle avoidance robots, line-following projects, automation systems and DIY electronics.
2. What is the operating voltage of the IR sensor module?
The module operates on 3.6V to 5V DC, making it suitable for many Arduino and compatible microcontroller projects.
3. What is the detection range of this sensor?
The specified detection distance is approximately 2cm to 30cm. The actual sensing distance can vary depending on the object’s surface, color, angle and surrounding conditions.
4. Can I adjust the sensitivity of the IR sensor?
Yes. The onboard preset potentiometer allows you to adjust the sensor sensitivity according to the requirements of your project.
5. Which boards can be used with this IR sensor module?
It can be integrated with Arduino UNO, ESP32, Raspberry Pi, STM32 and other compatible controllers that can interface with its digital output.
Package Included:
1 x IR Infrared Sensor Module Reflective Photoelectric Light Intensity Sensor
