8-Channel Grayscale Line Follower Sensor Module
- 32-bit ARM chip with 8 grayscale channels and RGB spotlights
- Recognizes lines of any color, 0.6–6.9 cm wide
- One-button auto-calibration for all 8 channels
- Anti-interference design against ambient light and track glare
- 1× IO and 1× I2C output with analog and digital signals
- Works with Arduino, STM32, Raspberry Pi and NVIDIA Jetson
- 5 V, 85 mA, 90 × 41 × 15 mm, 19 g
- Trusted dealerDirect manufacturer partnership
- Pan-India deliveryInsured shipping, all states
- Post-sale supportTraining + service included
What makes it work
8-Channel Grayscale Line Follower Sensor Module with Smart Full-Color RGB Recognition & Obstacle Avoidance for Robot Cars – Standard Version
Powered by a 32-bit ARM chip, the 8-channel grayscale line follower sensor features an integrated array of 8 RGB spotlights to precisely recognize lines of any color.
Product Description
Powered by a 32-bit ARM chip, the 8-channel grayscale line follower sensor features an integrated array of 8 RGB spotlights to precisely recognize lines of any color. Its built-in anti-interference algorithm effectively blocks sudden ambient light shifts and track glare. With onboard GPIO and I2C ports, it ensures seamless compatibility with mainstream controllers.
Supporting one-button auto-learning calibration, the sensor adaptively detects lines. A built-in smart algorithm handles high-difficulty tasks like right-angle turns, sharp U-turns, curves, and intersections, making it highly adaptable to multiple track types. Standardized mounting slots fit various robot car chassis. Backed by complete source code and technical documentation for Arduino, STM32, Raspberry Pi, and NVIDIA Jetson, even beginners can get started quickly.
Available Options
Version
Key Features & Applications
One-Button Auto-Calibration
Skip manual tuning with innovative auto-calibration. Calibrate all 8 channels via one button in under a minute, slashing prep time for competitions and projects.
Master Complex Tracks
Equipped with 8 sensors to precisely identify track features, effortlessly handling complex routes like curves, intersections, sharp angles, and T-junctions.
Anti-Interference Phototransistors
Provides physical protection while effectively blocking ambient light reflections. This design focuses the emitted light source to significantly reduce environmental interference.
Custom RGB Spotlights
Delivers high luminous flux with a narrow beam angle. It accurately projects full-spectrum visible light, offering a much more concentrated beam than standard LEDs.
Full-Color Line Following Logic
Matching colors produce strong reflections reading as white, while different colors yield weak reflections reading as black. By analyzing these grayscale variations, the sensor selects the optimal light source for high-precision, full-color track recognition.
Effectively Suppresses Ambient Light & Track Glare
Through extensive testing, our custom spotlight emitters and anti-glare shields completely solve ambient light interference. When installed normally, the module boasts exceptional track material compatibility—no angled mounting is required. Enjoy reliable, hassle-free performance that effortlessly eliminates track glare.
One-Button Auto-Calibration
Adjust Detection Height
Place the sensors at the desired height facing the white background. Wait 3 seconds for the data to stabilize.
Enter Calibration Mode
Long-press the onboard KEY button. The side indicators will flash to signal calibration mode.
Record Background Color
The sensor reads the white background. Once successful, all indicators will flash.
Complete Line Learning
Short-press the KEY button once to read the black line. The indicators will flash and then turn off, completing the setup.
Highly Adaptable to Varying Line Widths
The 8-channel grayscale module seamlessly adapts to line widths ranging from 0.6 cm to 6.9 cm, ensuring ultra-precise detection on both narrow and wide tracks for maximum versatility.
Pin Output Truth Table
The built-in multiplexer allows the MCU to read all 8 digital channels using just 4 I/O pins, drastically saving IO resources. By writing a 3-bit binary address via the AD0, AD1, and AD2 pins, the OUT pin outputs the exact digital value of the corresponding channel, ensuring highly efficient data acquisition.
Versatile Communication Interfaces
Installation Guide
Mount the sensor to the chassis of your robot car using standoffs and screws, maintaining a ground clearance of 10–40mm. Choose the right standoffs to match your chassis height.
Extensive Ecosystem Compatibility
With built-in GPIO and I2C interfaces using a dedicated protocol, the 8-channel grayscale line follower sensor seamlessly integrates with major controllers—no extra configuration needed. It perfectly supports Arduino, STM32, Raspberry Pi, and NVIDIA Jetson, providing a flexible and reliable solution for diverse AI applications.
Packing List
Technical Specifications
| Operating voltage | 5V |
|---|---|
| Operating temperature | -40~+85°C |
| Mounting fasteners | M2.5 or M3 standoffs/screws |
| Operating current | 85mA |
| Detection line width | 0.6–6.9cm |
| Detection height | 10–40mm |
| Mounting hole spacing | 16–42mm |
| Dimensions | 90 × 41 × 15 mm |
| Output interface | 1× IO, 1× I2C |
| Output signal | Analog & digital |
| Weight | 19g |
Frequently Asked Questions
What is included in the Standard Version packing list?
The Standard Version packing list shows the 8-channel grayscale line follower sensor, an F-F jumper wire (200 mm), a 4-PIN cable (200 mm), M3-15 double pass nylon standoffs ×2 and M3*6 screws ×6.
What line widths can it detect?
It adapts to line widths from 0.6 cm to 6.9 cm, with a detection height of 10–40 mm.
How do I calibrate the sensor?
Use the one-button auto-calibration: set the detection height, long-press the KEY button, record the white background, then short-press KEY once to read the black line.
Which interfaces and controllers does it support?
The Standard Version has 1× IO and 1× I2C output with analog and digital signals, and works with Arduino, STM32, Raspberry Pi and NVIDIA Jetson.
How do I mount it?
Mount it with M2.5 or M3 standoffs and screws, keeping a ground clearance of 10–40 mm; the mounting hole spacing is 16–42 mm.
The full sheet
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