Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Operating Voltage | 3.3V - 5V DC |
| Detection Range | 2cm - 40cm (Adjustable) |
| Sensor Type | Infrared Photoelectric Switch |
| Output Signal | Digital TTL Level (High/Low) |
| Potentiometer | Yes, for sensitivity adjustment |
| Indicator LED | Power and Detection Status LEDs |
| Mounting Hole Diameter | 3mm |
| PCB Dimensions | 32mm x 14mm x 10mm |
| Compatible Platforms | Arduino, Raspberry Pi, STM32, ESP32 |
| Application | Robot Obstacle Avoidance, Line Tracking, Counting |
Anonymous
Mar 29, 2026
Rating: 4/5
Great starter sensor
As someone new to electronics, I found this very easy to connect. There are plenty of tutorials online for this specific module type. It helped me understand how digital sensors work.
Anonymous
Mar 22, 2026
Rating: 4/5
Good sensitivity, needs calibration
The sensor is very sensitive, which is good, but you definitely need to spend time calibrating the potentiometer to get the exact range you want for your specific environment. Once set, it holds the setting well.
Anonymous
Mar 20, 2026
Rating: 5/5
Bought 10 for our school club
We purchased a batch of these for our high school robotics team. They are durable, easy to wire, and the students found them very intuitive to program. Highly recommended for educational purposes.
Anonymous
Mar 16, 2026
Rating: 5/5
Perfect for my Arduino Robot
This sensor module works flawlessly with my Arduino Uno project. The detection range is easily adjustable via the potentiometer, and it reacts quickly to obstacles. Great value for the price.
Anonymous
Mar 08, 2026
Rating: 3/5
Works but struggles in direct sunlight
Indoors, this sensor is fantastic. However, I noticed it gives false readings when used outdoors in direct bright sunlight. If you are building an indoor robot, it's a 5-star product. For outdoor use, be aware of lighting conditions.
Anonymous
Mar 05, 2026
Rating: 5/5
Compact and reliable
The form factor is small enough to fit on my compact rover without adding much weight. The output signal is clean and stable. I appreciate the clear silk screen labeling on the PCB.
Q: Is the output analog or digital?
A: This module provides a digital output (HIGH or LOW). When an obstacle is detected within the set range, the DO pin goes LOW; otherwise, it remains HIGH. It does not provide an analog distance measurement.
Q: Can this sensor detect black objects effectively?
A: Infrared sensors can sometimes struggle with pure black objects as they absorb IR light. However, by adjusting the sensitivity potentiometer closer to the maximum, you can usually achieve reliable detection for most dark surfaces.
Q: Can I use this with a 3.3V Raspberry Pi?
A: Yes, the module operates on a voltage range of 3.3V to 5V. You can power it with the 3.3V pin on your Raspberry Pi, and the TTL output levels are compatible with the Pi's GPIO inputs.
Q: How do I adjust the detection distance?
A: There is a blue potentiometer on the back of the PCB. Use a small screwdriver to turn it clockwise to increase the detection range or counter-clockwise to decrease it. Test with an object while adjusting to find your desired sweet spot.
Q: What is the current consumption of this module?
A: The typical current consumption is approximately 10mA to 15mA when the LED indicator is active. It is low power enough to be driven directly by most microcontroller GPIO pins, though using an external 5V supply is recommended for stability.
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