Build a Line-Crossing Alert with the TCRT5000 Line Sensor Starter Kit and Arduino Uno

Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.

This TCRT5000 line sensor kit lets you build a working electronic system that detects a black line on a white surface and sounds a buzzer the moment the line is crossed. It's the perfect first project for anyone curious about sensors, automation, or beginning robotics. The kit pairs an Arduino Uno with two TCRT5000 infrared reflective modules, turning a simple detection task into an engaging, hands-on coding experience.

What You'll Build

You'll assemble, wire, and program a circuit where two TCRT5000 sensors watch for a black line. When either sensor sees the line, it triggers an active buzzer and a flashing LED. You can place the sensors side-by-side for a driveway alert, in sequence to detect direction, or tweak the threshold to ignore shadows-giving you a real, working prototype that sparks bigger ideas.

What You'll Learn

• Reading analog signals from an IR sensor and understanding voltage thresholds
• Controlling a buzzer and LED with digital output pins
• Writing conditional logic in Arduino code to react to sensor values
• Prototyping circuits on a breadboard without soldering

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

This kit is designed for young learners in ATL Tinkering Labs, CBSE Class 11-12 students tackling their first Arduino-based physics or computer science project, and B.Tech ECE freshmen who want a quick, practical introduction to sensors. It's also ideal for Smart India Hackathon teams needing a reliable, ready-to-test line detection module. No prior electronics or coding experience is expected-just curiosity and a willingness to tinker.

Built and Backed by Compoden

Every Compoden kit ships with an AI build companion trained on this exact project - accessible via a QR code on the box, with WhatsApp and email backup. We've spent 10 years building projects for makers, schools, and institutions across India. If a part fails because of a manufacturing defect, replace it free within 7 days.