Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Channel Count	5 Channels
Detection Type	Photoelectric Reflective
Line Recognition	Black, White, and Red Lines
Output Signal	Digital TTL Level
Operating Voltage	3.3V - 5V DC
Adjustable Sensitivity	Yes, via Potentiometer
LED Indicators	5 Power/Signal Status LEDs
Mounting Hole Distance	Standard 10mm spacing
Primary Application	Robotics Line Following Competitions
PCB Dimensions	68mm x 14mm x 10mm

6 reviews

Anonymous

Mar 26, 2026

Rating: 5/5

Excellent build quality

Bought this for my son's science project. The PCB is sturdy, and the soldering points are clear. The five channels provide much better resolution than the standard 3-channel modules we used before.

Anonymous

Mar 21, 2026

Rating: 4/5

Great value, needs careful tuning

Works exactly as described. You do need to spend some time adjusting the potentiometers to get the threshold right for your specific lighting conditions, but once set, it tracks smoothly.

Anonymous

Mar 12, 2026

Rating: 5/5

Bulk buy success

Purchased ten units for our university robotics club. All of them worked out of the box with consistent performance across the board. Highly recommended for team projects.

Anonymous

Mar 07, 2026

Rating: 5/5

Perfect for competition bots

This sensor module is incredibly reliable for our high-speed line followers. The ability to detect red lines in addition to black and white gives us a huge advantage in complex arenas. Calibration was straightforward.

Anonymous

Mar 02, 2026

Rating: 4/5

Good sensitivity range

Very sensitive to surface changes. I had to raise the mounting height slightly to prevent false triggers on glossy tape, but overall it performs well for the price point.

Anonymous

Mar 02, 2026

Rating: 5/5

Fast response time

The reaction speed on this sensor is impressive. Our robot can take sharp corners at high speeds without losing the line. The digital output makes interfacing with Arduino and STM32 very simple.

5 FAQ

Q: Can this sensor distinguish between a red line and a black line simultaneously?

A: Yes, the photoelectric sensors are calibrated to detect contrast differences, allowing recognition of black, white, and red lines on various backgrounds.

Q: Is this compatible with a Raspberry Pi GPIO?

A: Absolutely. Since the output is digital TTL level, it can be directly connected to Raspberry Pi GPIO pins, provided you match the voltage logic (3.3V or 5V).

Q: How do I adjust the sensitivity if the ambient light changes?

A: There are small potentiometers on the back of the module for each channel. Use a small screwdriver to turn them until the indicator LED turns on or off at your desired threshold.

Q: Do I need to write complex code to use all 5 channels?

A: No, each channel outputs a simple HIGH or LOW signal. You just need to read the state of the 5 corresponding GPIO pins in your microcontroller code.

Q: What is the optimal mounting height for best performance?

A: For most applications, a distance of 5mm to 10mm between the sensor and the track surface provides the most stable readings.

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