Smart Door Lock Kit with Arduino Uno & Color Sensor — Build Your Own Color-Activated Lock

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

Picture a lock on your cupboard that only opens when you show it a red card. No fumbling for keys — just a swipe of color. This Smart Door Lock Kit combines an Arduino Uno, a TCS3200 color sensor, and an SG90 servo to turn that idea into a real working gadget. In 2–3 hours, you’ll wire up the circuit, upload the code, and have a lock that responds to red, green, or blue objects by swinging open to a matching bin. You’ll learn to process sensor data and drive a motor while building a gadget that feels like something from a spy movie. The kit includes everything, even a 9V battery snap, so you can start immediately. It’s a perfect first project for budding inventors who want to understand sensors and automation.

What You'll Build

You’ll create a door lock mechanism that reads the color of a token you place on the sensor. If it’s green, the servo rotates to position A; red goes to position B; blue goes to position C. You can label bins for ‘allowed’ or ‘denied’ access, or build a simple sorting machine. By swapping tokens or coding new color thresholds, you can customize the lock for multiple users or secret compartments. Along the way, you’ll see how a sensor’s analog data becomes a motor command — a skill you’ll use in robotics and IoT projects.

What You'll Learn

• Read color values from a TCS3200 sensor and map them to red, green, or blue.
• Control a servo motor’s angle using Arduino PWM.
• Create conditional logic to trigger actions based on sensor input.
• Assemble a breadboard circuit and power it with a 9V battery.

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

Ideal for CBSE Class 11-12 students exploring Arduino in their curriculum, B.Tech ECE/EEE freshers looking for a hands-on miniproject, and ATL Tinkering Lab mentors running electronics workshops. Also perfect for hobbyists aged 5-15 who want a guided, frustration-free first project.

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.