3 Channel IR Infrared CTRT5000 Line Detection Module
3 Channel IR Line Detection Module (TCRT5000)
Overview
Multi-sensor line tracking module (3 channels)
Uses TCRT5000 IR reflective sensors
Designed for line follower robots & path detection
Compatible with Arduino, ESP32, Raspberry Pi
Working Principle
Each sensor emits infrared light (IR LED)
Surface reflects IR light back to phototransistor
Reflection varies:
Black surface low reflection
White surface high reflection
Comparator converts signal digital output (HIGH/LOW)
Detects line position using 3 sensors (Left'Center'Right) 5V DC
Number of Channels: 3
Sensor Type: TCRT5000 IR reflective sensor
Output Type: Digital (TTL)
Detection Method: Reflective IR
Dimensions: ~3 2 1 cm
Pin Configuration
VCC 5V
GND Ground
OUT1 Left sensor output
OUT2 Center sensor output
OUT3 Right sensor output
Module Components
3 TCRT5000 IR sensors
LM393 comparator IC
Indicator LEDs (per channel)
3-channel detection for better accuracy
High sensitivity & stable performance
Built-in comparator for clean digital output
LED indicators for easy debugging
Good anti-interference (visible light resistant)
Easy mounting with screw holes
Applications
Line follower robots
Maze solving robots
Path tracking systems
Smart vehicles
Grid navigation systems
Robotics competitions
Usage Tips
Maintain proper height (~510 mm) from surface
Adjust potentiometer for sensitivity tuning
Use black tape on white surface for best results
Ensure stable 5V supply
Advantages
Simple and easy to use
Fast response time
Reliable line detection
Low cost and widely available
Limitations
Works only on contrast surfaces (black/white)
Affected by ambient IR (sunlight)
Limited detection distance (~125 mm typical)
Needs calibration for best performance
Summary
A 3-channel IR line tracking sensor module
Uses TCRT5000 reflective sensors
Outputs digital signals for line detection
Ideal for robotics and automation