3 Channel IR Infrared CTRT5000 Line Detection Module
π€ 3 Channel IR Line Detection Module (TCRT5000)
π§© 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
βοΈ Working Principle
Each sensor emits infrared light (IR LED)
Surface reflects IR light back to phototransistor
Reflection varies:
β« Black surface β low reflection
βͺ White surface β high reflection
Comparator converts signal β digital output (HIGH/LOW)
π Detects line position using 3 sensors (LeftβCenterβRight)
π Key Specifications
πΉ Operating Voltage: 5V DC
πΉ Number of Channels: 3
πΉ Sensor Type: TCRT5000 IR reflective sensor
πΉ Output Type: Digital (TTL)
πΉ Detection Method: Reflective IR
πΉ Dimensions: ~3 Γ 2 Γ 1 cm
π Pin Configuration
π΄ VCC β 5V
β« GND β Ground
π‘ OUT1 β Left sensor output
π’ OUT2 β Center sensor output
π΅ OUT3 β Right sensor output
π§± Module Components
3 Γ TCRT5000 IR sensors
LM393 comparator IC
Indicator LEDs (per channel)
Sensitivity adjustment (preset potentiometer)
Mounting holes
π Features
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
π οΈ Applications
Line follower robots π€
Maze solving robots
Path tracking systems
Smart vehicles π
Grid navigation systems
Robotics competitions
β οΈ Usage Tips
Maintain proper height (~5β10 mm) from surface
Adjust potentiometer for sensitivity tuning
Use black tape on white surface for best results
Avoid uneven or reflective surfaces
Ensure stable 5V supply
β Advantages
Simple and easy to use
Fast response time
Reliable line detection
Low cost and widely available
β οΈ Limitations
Works only on contrast surfaces (black/white)
Affected by ambient IR (sunlight)
Limited detection distance (~1β25 mm typical)
Needs calibration for best performance
π Summary
A 3-channel IR line tracking sensor module
Uses TCRT5000 reflective sensors
Outputs digital signals for line detection
Ideal for robotics and automation projects
