Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Operating Voltage	3.3V - 5V DC
Detection Range	2cm - 30cm (Adjustable)
Output Signal	Digital Switching Output (0 and 1)
Comparator Chip	LM393
PCB Dimensions	32mm x 14mm x 10mm
Mounting Hole Diameter	3mm
Indicator LEDs	Power LED and Detection Status LED
Potentiometer Function	Sensitivity Adjustment
Application Scenarios	Obstacle Avoidance, Line Tracking, Counting
Package Includes	1x Sensor Module, 1x Header Pin Set

6 reviews

Anonymous

Mar 27, 2026

Rating: 4/5

Good sensitivity but needs calibration

The module is solid and well-built. I had to spend a few minutes calibrating the sensitivity for my specific lighting conditions, but once set, it tracks lines perfectly. Deducting one star because the instructions were minimal.

Anonymous

Mar 26, 2026

Rating: 5/5

Easy to use for beginners

As someone new to electronics, I found this very easy to wire up. The labeled pins make it simple to connect to VCC, GND, and the signal pin. It immediately detected my hand when powered on.

Anonymous

Mar 21, 2026

Rating: 5/5

Excellent build quality

The PCB looks professional with clean soldering. The mounting holes are perfectly sized for standard standoffs. I've used these for both obstacle avoidance and RPM counting, and they handle both tasks well.

Anonymous

Mar 21, 2026

Rating: 5/5

Perfect for my Arduino robot

This sensor works flawlessly with my Arduino Uno project. The detection range is easily adjustable via the potentiometer, and it responds very quickly to obstacles. Great value for the price.

Anonymous

Mar 19, 2026

Rating: 5/5

Reliable and consistent

I bought ten of these for a classroom kit. All of them functioned correctly out of the box. The LM393 comparator provides stable output without much noise. Highly recommended for educational purposes.

Anonymous

Mar 05, 2026

Rating: 3/5

Works well in low light only

The sensor performs great indoors, but direct sunlight interferes with the infrared signal significantly. If you plan to use this outdoors, you will need to build a shade or housing for it.

5 FAQ

Q: What is the maximum current consumption of this module?

A: The typical current consumption is around 20mA when the IR LED is active. Please ensure your power supply can handle this load if you are connecting multiple sensors.

Q: Does the package include jumper wires?

A: No, the package includes the sensor module and a set of header pins that you can solder onto the board. Jumper wires are not included but are required for connection.

Q: Can this sensor detect black lines on a white surface?

A: Yes, this module is commonly used for line tracking. You can adjust the sensitivity potentiometer to distinguish between the reflection differences of black lines and white surfaces.

Q: Is this compatible with Raspberry Pi GPIO pins?

A: Absolutely. Since the output is digital (0 or 1) and operates at 3.3V-5V, it is fully compatible with Raspberry Pi GPIO pins. Just ensure you connect the VCC to the 3.3V or 5V pin accordingly.

Q: How do I adjust the detection distance?

A: There is a blue potentiometer on the back of the PCB. Rotate it clockwise to increase sensitivity (longer range) or counter-clockwise to decrease it. Use a small screwdriver for fine adjustments.

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