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Measure Light and Optical Changes with a Compact Sensor

The Line Tracking Sensor Module Grove is a line tracking sensor with digital output designed for light logging, optical switching, line tracking, and brightness-aware projects. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.

Key details include Power supply: 5V DC; Digital output mode: TTL (High when black is detected, Low when white is detected).

Why you’ll love it

  • Integrated indicator LED: Integrated indicator LED
  • Digital output: Digital output
  • Adjustable detecting range.: Adjustable detecting range.
  • Controller output: TTL (High when black is detected, Low when white is detected)
  • Power range: 5V DC
  • Useful spec: 4 pin Buckled Grove interface

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What you can build

This sensor is a good fit for automatic brightness control, line followers, light meters, UV monitors, flame detection, and optical encoders.

Starter bundles

Pair it with an Arduino-compatible board, ESP32, or Raspberry Pi, plus a breadboard or jumper wires for quick setup and testing.

Recommended add-ons

Useful add-ons include USB-to-serial tools, level-safe controllers, displays, and data loggers, depending on how you plan to power, mount, and log the sensor.

Technical specifications

Product Line Tracking Sensor Module Grove
Multiple infrared sensors It typically has two or more sensors arranged in a line to provide better accuracy and stability in line detection.
Indicator LEDs Some modules include built-in indicator LEDs to provide visual feedback on the detected line status.
Robotic line-following It is commonly used in robotic projects to enable robots to follow lines autonomously, such as in line-following competitions or automated guided vehicles (AGVs).
Smart vehicles They can be utilized in autonomous or semi-autonomous vehicles, including drones, toy cars, or self-driving robots, to navigate predefined paths.
Digital output It often provides a digital output signal that indicates whether the line is detected or not, simplifying the integration with microcontrollers or other control systems.
Digital output mode TTL (High when black is detected, Low when white is detected)
Power supply 5V DC
Connector 4 pin Buckled Grove interface

Wiring & usage notes

Connect power and ground, then wire TX and RX to a serial-capable controller at the correct logic level and baud rate.

What’s in the box

1 × Line Tracking Sensor Module Grove

Frequently Asked Questions

What does the Line Tracking Sensor Module Grove measure? It is designed to measure line contrast or surface reflectivity.
Can I use it with Arduino, ESP32, or Raspberry Pi? Yes. It is well suited for common maker and embedded platforms, as long as you power it at the correct voltage and match the signal level to your controller.
How do I connect this UART sensor? This version uses UART or serial output, so you connect power plus TX and RX at the correct logic level.
What affects accuracy? Power quality, wiring, mounting, target material, and the real environment can all affect the reading. It is best to test and calibrate in the final setup.
Is it good for prototyping? Yes. It is a practical choice for learning, proof-of-concept builds, and small automation projects.

Build with this board

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Notes from the bench

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Ask the community

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