Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Operating Voltage	3.3V - 5V DC
Detection Range	2cm - 40cm (Adjustable)
Sensor Type	Infrared Reflective
Output Signal	Digital TTL Level (High/Low)
Potentiometer	Yes, for sensitivity adjustment
Indicator LED	Power and Detection Status
Mounting Hole Diameter	3mm
PCB Dimensions	32mm x 14mm
Compatible Platforms	Arduino, Raspberry Pi, STM32
Application	Line Tracking & Obstacle Avoidance

6 reviews

Anonymous

Mar 31, 2026

Rating: 4/5

Good value but needs calibration

Great price for a pack of these. They are sensitive enough for obstacle avoidance, but you do need to spend some time tuning the distance screw to get the range exactly where you want it.

Anonymous

Mar 25, 2026

Rating: 5/5

Exceeded expectations

The build quality is better than I expected for the price. The soldering points are clear, and the IR LEDs seem bright and effective. Will definitely buy more.

Anonymous

Mar 25, 2026

Rating: 5/5

Reliable and consistent

I've used many IR sensors before, and these offer excellent consistency. The response time is fast, which is crucial for high-speed obstacle avoidance algorithms.

Anonymous

Mar 19, 2026

Rating: 5/5

Perfect for my line follower robot

These sensors work flawlessly for black line detection. The adjustable potentiometer makes it very easy to calibrate for different lighting conditions. Highly recommended for DIY robotics projects.

Anonymous

Mar 11, 2026

Rating: 5/5

Easy to use for beginners

Bought this for my son's science project. The wiring is straightforward (VCC, GND, OUT), and it connected easily to our Arduino board without any complex libraries.

Anonymous

Mar 09, 2026

Rating: 4/5

Solid performance

We use these in our workshop for various student prototypes. They hold up well under frequent use. Only minor issue is that direct sunlight can interfere slightly, but that's expected with IR.

5 FAQ

Q: What is the maximum current draw for this module?

A: The typical current consumption is around 20mA when the IR LED is active. Please ensure your microcontroller pin or power source can handle this load.

Q: Is this compatible with 3.3V logic systems like ESP32?

A: Yes, the module operates on a voltage range of 3.3V to 5V, making it fully compatible with 3.3V logic systems such as the ESP32 and Raspberry Pi.

Q: How do I adjust the detection distance?

A: There is a blue potentiometer on the PCB. Use a small screwdriver to turn it clockwise to increase sensitivity (distance) or counter-clockwise to decrease it while testing with an object.

Q: Does this come with jumper wires?

A: This listing is for the sensor module only. Jumper wires are not included, but standard Dupont wires fit the pin header perfectly.

Q: Can this sensor detect glass obstacles?

A: Infrared sensors generally struggle with transparent objects like clear glass because the IR light passes through rather than reflecting back. It works best on opaque surfaces.

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