The Line Trace Sensor Module uses an infrared emitter/detector pair to measure the reflectivity of a surface below it. When the reflectivity exceeds an adjustable threshold, the output goes low — making it ideal for building line-following robots and edge-detection systems.

The onboard potentiometer lets you fine-tune the detection threshold to suit different surfaces and lighting conditions. Compatible with Arduino and other microcontrollers operating at 2.5–12V.

Key Features

• IR Reflectivity Sensing – Detects surface reflectivity changes for line tracking
• Adjustable Threshold – Onboard potentiometer for fine-tuning sensitivity
• Active Low Output – Output goes low when reflectivity exceeds threshold
• Wide Voltage Range – 2.5–12V power supply for broad compatibility
• Simple 3-Pin Interface – VCC, OUT, and GND for easy wiring

Specifications

• Output Signal – Active low (TTL level)
• Interface – 3-pin (VCC / OUT / GND)
• Power Supply – 2.5–12V
• Working Current – 18–20mA at 5V

Ideal For

• Line-following robots
• Edge detection and table-edge avoidance
• Surface reflectivity measurement
• Arduino and microcontroller beginner projects

Package Contents

• 1× Line trace sensor module