Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Sensor Type	Single-Channel Grayscale Photosensitive
Output Signal	Digital (TTL)
Operating Voltage	3.3V - 5V DC
Detection Color	Black, White, Red, Green Lines
Adjustable Sensitivity	Yes, via Potentiometer
Indicator LED	Power and Signal Status
Mounting Hole Diameter	3mm
PCB Dimensions	32mm x 14mm
Primary Application	Smart Car Line Tracking
Compatibility	Arduino, STM32, Raspberry Pi

6 reviews

Anonymous

Mar 17, 2026

Rating: 5/5

Perfect for my robotics project

This sensor works flawlessly with my Arduino Uno. The sensitivity adjustment is very responsive, allowing me to calibrate it perfectly for the black tape on my white track. Great value for electronic competitions.

Anonymous

Mar 16, 2026

Rating: 4/5

Solid performance

Response time is quick enough for moderate speeds. At very high speeds, you might need multiple sensors, but for a single-channel module, this exceeds expectations.

Anonymous

Mar 13, 2026

Rating: 5/5

Bulk bought for our team

We purchased ten of these for our university competition team. Consistency across all units is impressive. They handle red and green lines just as well as black and white.

Anonymous

Mar 13, 2026

Rating: 4/5

Good but needs careful calibration

The module is compact and easy to wire. However, ambient light can affect readings if not shielded properly. Once I added a small hood, the line tracking became much more stable.

Anonymous

Mar 10, 2026

Rating: 5/5

Easy to use for beginners

I was worried about wiring it correctly, but the labels on the PCB are clear. The included documentation online helped me get started immediately. Highly recommended.

Anonymous

Mar 08, 2026

Rating: 5/5

Great educational tool

Bought this to teach my son about sensors and logic. The digital output makes it very simple to understand high/low signals. He got his car moving in an afternoon.

5 FAQ

Q: Is this sensor suitable for outdoor use?

A: This module is designed for indoor controlled environments. Direct sunlight or rapidly changing outdoor lighting can interfere with the grayscale detection accuracy.

Q: Can this sensor detect colored lines like red or green effectively?

A: Yes, the photosensitive element is capable of detecting contrast between colored lines (Red, Green) and the background, provided the lighting conditions are consistent and the sensitivity is calibrated.

Q: What is the maximum operating voltage for this module?

A: The module operates safely within a range of 3.3V to 5V DC. We recommend using 5V for standard Arduino projects to ensure stable logic levels.

Q: How do I adjust the sensitivity if the car keeps losing the line?

A: Locate the blue potentiometer on the board. Use a small screwdriver to turn it slowly while testing over the line. Turn clockwise to increase sensitivity or counter-clockwise to decrease it until the indicator LED reacts correctly.

Q: Does this come with mounting screws?

A: No, the package includes only the sensor module. Standard M3 screws and standoffs are required for mounting, which are commonly available in electronics kits.

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