Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Operating Voltage	3.3V - 5V DC
Detection Range	2cm - 40cm (Adjustable)
Detection Angle	35 degrees
Comparator Chip	LM393
Output Signal	Digital Switching Output (0 and 1)
PCB Dimensions	32mm x 14mm
Mounting Hole Diameter	3mm
Indicator LED	Power and Obstacle Detection LEDs
Potentiometer Function	Sensitivity and Distance Adjustment
Compatible Platforms	Arduino, Raspberry Pi, STM32, ESP32

6 reviews

Anonymous

Mar 09, 2026

Rating: 4/5

Great value, easy to use

As a beginner, I was worried about wiring these up, but the pinout is standard and easy to understand. Works perfectly with my Arduino Uno. Only giving 4 stars because the included headers weren't pre-soldered.

Anonymous

Mar 05, 2026

Rating: 4/5

Good sensor, watch the sunlight

Works great indoors. Just note that direct sunlight can interfere with the IR signal, which is typical for this technology. For indoor robots or shaded outdoor use, it's fantastic.

Anonymous

Mar 04, 2026

Rating: 5/5

Exceeded expectations

I needed a cheap solution for collision detection on a budget project. These modules perform just as well as more expensive branded alternatives. The adjustment screw allows for precise tuning.

Anonymous

Mar 04, 2026

Rating: 5/5

Perfect for my line follower robot

These sensors are incredibly responsive. I used a pair of them for a line-following project, and the adjustable potentiometer made calibration a breeze. The detection range is accurate within the specified limits.

Anonymous

Mar 03, 2026

Rating: 5/5

Reliable obstacle avoidance

We bought ten of these for a university workshop. Every single unit worked out of the box. The black-white line detection feature is also quite sensitive, making it versatile for multiple types of projects.

Anonymous

Mar 02, 2026

Rating: 5/5

Compact and effective

The small form factor fits perfectly on my custom PCB design. The IR emission is strong enough to detect obstacles reliably even in moderately lit rooms. Highly recommended for hobbyists.

5 FAQ

Q: Is there a library available for Python on Raspberry Pi?

A: Since this module outputs a simple digital high/low signal, you do not need a specific library. You can read the state using standard GPIO libraries like RPi.GPIO or gpiozero by setting the pin to input mode.

Q: How do I adjust the detection distance?

A: There is a blue potentiometer on the board. Use a small Phillips screwdriver to turn it clockwise to increase the detection range or counter-clockwise to decrease it. Test with an object while adjusting.

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

A: The module typically draws around 20mA to 30mA when the IR LED is active and an obstacle is detected. Please ensure your microcontroller pin can supply this current or use an external power source.

Q: Can this sensor detect clear glass or transparent objects?

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.

Q: Can I connect this directly to a 3.3V logic system like ESP32?

A: Yes, the module operates on a voltage range of 3.3V to 5V, and the digital output is compatible with 3.3V logic levels, making it safe to connect directly to ESP32 or similar boards.

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