IR Photoelectric Switch Barrier Line Track Sensor Module TCRT5000

A TCRT5000-based reflective IR line tracking sensor that detects the difference between black and white surfaces — outputting a digital signal for line detection. The standard sensor for line-following robots and as a reflective object detector at close range (up to 25 mm).

🔹 Key Applications

• Line-following robot track detection
• Black-line maze navigation in robotics competitions
• Tachometer pulse counting (counting black marks on a spinning disc)
• Object presence detection at 1–25 mm range
• Printed circuit board positioning detection
• Automatic gate position detection

🔹 Why Choose This Module?

• TCRT5000 emitter/detector pair — industry-standard line sensor
• Digital output — direct MCU GPIO connection
• Adjustable sensitivity threshold via potentiometer
• Detects contrast between black and white surfaces reliably
• Compact, lightweight sensor — ideal for mobile robotics

🔹 Technical Specifications

• Sensor: TCRT5000 reflective IR sensor
• Detection Range: 1 – 25 mm
• Output: Digital (LOW on line detection)
• Operating Voltage: 3.3 V – 5 V DC
• Sensitivity: Adjustable

🔹 What's Included

1 × TCRT5000 IR Reflective Line Track Sensor Module

🔹 Pro Tip

💡 For line-following robots, mount 3–5 sensors in a row with 10–15 mm spacing below the chassis, approximately 5 mm above the track surface. The middle sensor detects the line and outer sensors detect deviation — implement a PID controller for smooth, fast line following.

⚠️ Note: Always ensure proper heat dissipation and correct voltage configuration before powering connected devices.