Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Channel Count	5 Channels
Detection Type	Photoelectric Conversion
Line Recognition	Black-White and Red-Line
Operating Voltage	3.3V - 5V DC
Output Signal	Digital TTL Level
Adjustment Method	Potentiometer Sensitivity Control
LED Indicator	Yes, per channel status
Mounting Hole Distance	Standard 10mm spacing
Application	Robot Line Following Competition
PCB Material	FR-4 Double Layer

6 reviews

Anonymous

Mar 24, 2026

Rating: 5/5

Reliable and sturdy

We bought ten of these for our university lab. They have held up well against student handling. The digital output makes interfacing with Arduino and STM32 boards very straightforward.

Anonymous

Mar 16, 2026

Rating: 5/5

Fast response time

The photoelectric conversion speed is impressive. My robot can take corners at high speeds without losing the line. The LED indicators are bright and help greatly with debugging.

Anonymous

Mar 12, 2026

Rating: 5/5

Exceeded expectations

The build quality is better than expected for the price. The pinout is clearly labeled, and the module is compact enough to fit on small chassis designs. Highly recommended for beginners and pros alike.

Anonymous

Mar 11, 2026

Rating: 4/5

Great value, needs calibration

Works well once you spend time calibrating the potentiometers for your specific lighting conditions. The black-white detection is sharp. Just make sure to shield it from direct sunlight if used outdoors.

Anonymous

Mar 09, 2026

Rating: 4/5

Good but sensitive to ambient light

Overall a solid product. It struggles a bit under very bright fluorescent lights unless you adjust the sensitivity carefully. Once tuned, it tracks the grayline perfectly.

Anonymous

Mar 04, 2026

Rating: 5/5

Perfect for competition bots

This sensor module is incredibly responsive. The 5-channel setup allows my robot to navigate complex curves smoothly during the regional robotics contest. The red-line recognition works flawlessly on our specific track mats.

5 FAQ

Q: Does this come with connecting wires?

A: The package includes the PCB module only. Connecting wires or header pins are not included but can be easily soldered onto the designated pads for your custom wiring needs.

Q: Can this sensor detect red lines on a white background?

A: Yes, this module is specifically designed with photoelectric conversion capabilities to recognize both standard black-white lines and red lines on contrasting backgrounds.

Q: What is the optimal mounting height from the ground?

A: For best performance, we recommend mounting the sensor between 5mm and 15mm above the track surface. You may need to adjust this based on your specific potentiometer settings.

Q: Is this compatible with 3.3V microcontrollers like ESP32?

A: Absolutely. The module operates within a 3.3V to 5V DC range, making it fully compatible with 3.3V logic systems such as the ESP32, as well as 5V systems like Arduino Uno.

Q: How do I adjust the sensitivity for different floor colors?

A: Each channel has a dedicated blue potentiometer. Use a small screwdriver to rotate it clockwise to increase sensitivity or counter-clockwise to decrease it while monitoring the LED indicator.

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