UV-C Sterilization Box Kit - Build a Safety Interlock System with Arduino Nano

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

You're building a self-contained UV-C sterilization chamber that respects one non-negotiable rule: if the lid opens, the ultraviolet light dies instantly. This kit places an Arduino Nano at the centre of a timer-based sanitization cycle, using a DS3231 real-time clock for discipline, a reed switch to sense the door, and a relay to enforce the kill switch. It is the kind of safety-critical embedded project that transforms a simple sanitizer into a lesson in industrial interlocks and fail-safe design.

What You'll Build

A fully automatic UV-C sterilization box. Tap a button to start a timed cycle; the OLED shows the remaining minutes. While the door stays closed, the relay energises the four 275?nm UV-C LEDs. The instant the reed switch breaks - lid lifted, even a crack - the relay drops out, the buzzer sounds, and the timer pauses until the door is secure again. This is not a toy circuit; it mirrors the logic found in medical sterilizers on a scale you can understand and debug yourself.

What You'll Learn

• Interface a DS3231 RTC to schedule exact sterilisation durations, not just delays.
• Use a reed switch as a contactless door sensor and wire its state into a safety interlock.
• Drive high-power UV-C LEDs safely through BC547 transistors and a relay module.
• Display critical status (timer, door condition, cycle completion) on a 0.96-inch OLED.

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

If you are a CBSE Class 11-12 student preparing a physics-with-electronics demonstrator, a B.Tech ECE or EEE undergraduate working on an industrial safety prototype, or a team participating in Smart India Hackathon, you will find exactly the right depth here. The project also slots neatly into ATL Tinkering Lab activities, giving mentors a tangible way to discuss fail-safe design, relay logic, and sensor integration without glossing over the real risk of UV-C exposure.

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.

Choose your assembly option:

• Soldering Kit - 25W soldering iron, 60/40 solder wire, flux, and small perfboard for permanent assembly.
• Breadboard Combo - 800-point full-size breadboard with 65-piece jumper wire pack for solderless prototyping.