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)
📊 Key Specifications
🔹 Operating Voltage: 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)
Sensitivity adjustment (preset potentiometer)
Mounting holes
🔄 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
🛠️ Applications
Line follower robots 🤖
Maze solving robots
Path tracking systems
Smart vehicles 🚗
Grid navigation systems
Robotics competitions
⚠️ Usage Tips
Maintain proper height (~5–10 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
✅ 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 (~1–25 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 projects