Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Operating Voltage	3.3V - 5V DC
Detection Type	Infrared Reflection
Output Signal	Digital Switching (0 and 1)
Detection Distance	2cm - 30cm (Adjustable)
Comparator Chip	LM393
PCB Dimensions	32mm x 14mm
Mounting Hole Diameter	3mm
Indicator LEDs	Power and Detection Status
Application	Line Tracking, Obstacle Avoidance
Package Includes	1x Sensor Module, 1x Jumper Wire Set

6 reviews

Anonymous

Mar 30, 2026

Rating: 5/5

Perfect for my Arduino line follower

These sensors work exactly as described. The sensitivity potentiometer makes it very easy to calibrate for different surface colors. I used four of them on my smart car project and the line tracking is smooth and responsive.

Anonymous

Mar 30, 2026

Rating: 4/5

Solid performance

The build quality is decent for the price point. The soldering pads are large enough for easy wiring. One unit out of five had a slightly loose potentiometer, but it still functioned after tightening.

Anonymous

Mar 25, 2026

Rating: 5/5

Essential for beginner robotics

I bought this for a university project. The documentation online is plentiful, and the module is very forgiving for beginners. The output is clean digital logic which interfaces easily with microcontrollers.

Anonymous

Mar 18, 2026

Rating: 5/5

Fast shipping and works great

Arrived quickly and well-packaged. I tested them immediately on a black tape line against a white floor, and the response time was instant. No lag detected in the robot's movement.

Anonymous

Mar 18, 2026

Rating: 5/5

Reliable obstacle detection

While marketed for line tracking, I found these excellent for short-range obstacle avoidance too. The detection range is adjustable up to about 25cm depending on the object's reflectivity. Highly recommended.

Anonymous

Mar 06, 2026

Rating: 4/5

Good value but needs careful calibration

Great price for a pack of these modules. They are sensitive to ambient light, so you need to shield them or calibrate them in the environment where the robot will operate. Once set up, they are reliable.

5 FAQ

Q: Does this come with mounting screws?

A: The package typically includes the sensor module and jumper wires. Mounting screws are not included, but the 3mm holes fit standard M3 screws commonly available in electronics kits.

Q: Can this sensor detect clear glass objects?

A: Infrared sensors rely on reflection. Clear glass may allow IR light to pass through rather than reflecting it, making detection unreliable. It works best on opaque objects.

Q: Is this compatible with Raspberry Pi GPIO pins?

A: Yes, it is compatible. However, ensure you configure the GPIO correctly for digital input. Since the module operates at 3.3V-5V, it matches the Pi's logic levels safely.

Q: Can I use this outdoors in direct sunlight?

A: Direct sunlight contains strong infrared radiation which can interfere with the sensor's reading. For outdoor use, we recommend adding a physical shield or tube around the sensor.

Q: How do I adjust the detection distance?

A: There is a blue potentiometer on the board. Turn it clockwise to increase sensitivity (longer distance) and counter-clockwise to decrease it. Use a small screwdriver for adjustment.

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