Attributes

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

6 reviews

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.

5 FAQ

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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