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Home / Computer Hardware, Monitors & Peripherals / 7-Channel Digital Line Tracking Sensor Robot Car 7-Channel Gray Scale Line Following Module Infrared Recognition

Attributes

Brand -
Category Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals
Origin -
Channel Count 7 Channels
Sensor Type Infrared Reflective
Output Signal Digital TTL Level
Operating Voltage 3.3V to 5V DC
Detection Distance 1mm to 25mm
PCB Dimensions 145mm x 19mm
Indicator LEDs 7 Power + 7 Signal LEDs
Comparator Chip LM393
Sensitivity Adjustment Multi-turn Potentiometer
Connector Pitch 2.54mm Pin Header

5 reviews

A

Anonymous

Mar 24, 2026

Rating: 3/5

Instructions lacking

Hardware is fine and works as expected, but the included documentation was sparse. Had to search online for wiring diagrams.

A

Anonymous

Feb 25, 2026

Rating: 5/5

Great for competitions

Used this for a university robotics contest. Very reliable tracking even on slightly worn tape lines. Highly recommend for students.

A

Anonymous

Feb 14, 2026

Rating: 5/5

Bulk order success

Bought 10 units for our workshop. All units tested and working perfectly. Consistent quality across the batch.

A

Anonymous

Feb 09, 2026

Rating: 4/5

Good sensitivity

Detects lines well but needs careful mounting height adjustment. Once set up correctly, it performs reliably. Good value for the price.

A

Anonymous

Feb 09, 2026

Rating: 5/5

Perfect for Arduino Bot

Works flawlessly with my Arduino Uno project. Calibration was easy using the onboard potentiometers. The 7 channels provide smooth line tracking.

5 FAQ

Q: Can I use this sensor outdoors?

A: Not recommended. Direct sunlight contains infrared light which can interfere with the sensor readings.

Q: What is the maximum speed it can track?

A: Tracking speed depends on your microcontroller processing speed, but typically it handles robots moving up to 1-2 meters per second.

Q: Does it work on white lines on a black floor?

A: Yes, the hardware detects contrast. You simply need to invert the logic in your code to handle white lines on black.

Q: Is this compatible with Raspberry Pi GPIO?

A: Yes, it works with 3.3V logic systems like Raspberry Pi. Ensure you connect the VCC to 3.3V pin.

Q: What type of jumper wires fit the headers?

A: Standard 2.54mm pitch female-to-female or female-to-male jumper wires fit perfectly on the pin headers.

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