IR Line Tracking Sensor Module

The IR Line Tracking Sensor Module is designed for detecting lines and surface contrast in mobile robotics and automation projects. It operates using infrared reflection, where an IR emitter and receiver detect differences between light and dark surfaces. The module features both analog and digital outputs and an onboard potentiometer for sensitivity adjustment. Built for stable operation at 3.3V or 5V, it integrates easily with microcontrollers such as Arduino UNO, ESP32, and Raspberry Pi Pico. Ideal for line-following robots, automation systems, and educational robotics experiments.

Features

- Infrared reflective sensing for line detection

- Analog and digital signal outputs available

- Adjustable sensitivity using onboard potentiometer

- Compatible with 3.3V and 5V microcontrollers

- Integrated IR transmitter and receiver pair

- Digital output with LOW signal on object detection

- Dual status LEDs for power and detection indication

- 4-pin interface for easy wiring

- Compact PCB suitable for small robots

- Stable detection range between 5 mm and 10 mm

- Fast response suitable for real-time line tracking

- Compatible with Arduino, ESP32, and Raspberry Pi Pico

Specifications

- Operating Voltage: 3.3V – 5V DC

- Detection Method: Infrared Reflective Sensing

- Output Type: Digital Output (DO) and Analog Output (AO)

- Digital Output Level: LOW when object detected

- Detection Distance: 5 mm – 10 mm

- Sensitivity Adjustment: Onboard potentiometer

- Indicator LEDs: Power LED and Detection LED

- Interface Pins: AO, DO, GND, VCC

- Sensor Type: Infrared emitter and receiver pair

- Module Dimensions: 32 mm × 14 mm

- Mounting Method: PCB module with pin header interface

- Supported Platforms: Arduino, ESP32, Raspberry Pi, Microcontrollers

Links

- IR Line Tracking Sensor Datasheet

- IR Line Tracking Sensor 3D Model

- Line tracking sensors holder

Tutorials

TCRT5000 Infrared Reflective Sensor - How it works and example circuit with code.