Build a Sun-Safe Wristband That Alerts When UV Exposure Gets Too High — Arduino Nano Kit

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

Give your child a real-world reason to learn electronics — build a wristband that watches the sun just like they do. This kit turns an Arduino Nano and a UV sensor into a wearable guardian, tracking cumulative UV dose throughout the day. When levels approach a safety limit, a coin vibration motor buzzes gently against the skin, reminding them to reapply sunscreen or step into the shade. It’s a project that connects circuit building directly to health awareness, perfect for young makers who love to be outdoors.

What You'll Build

You’ll assemble a compact, arm-worn device that reads UV intensity from an ML8511 sensor every second. The Arduino Nano processes that real-time data and displays the current UV index, total daily dose, and alert status on a bright 0.96-inch OLED screen. A transistor-driven vibration motor kicks in when the accumulated UV exceeds a preset safe limit (customisable in the code). Once built, the wristband becomes a practical tool for summer camps, cricket practice, or any long afternoon in the sun — teaching kids to treat UV just like they treat step counts.

What You'll Learn

• Read analog sensor values from an ML8511 UV photodiode and convert them to UV index
• Display real-time data on a 0.96-inch OLED using I2C communication
• Trigger a vibration motor via a BC547 transistor as a switch for haptic feedback
• Build a wearable circuit on a breadboard and plan for a future permanent enclosure

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

This kit is designed for young creators in India — from CBSE Class 5 onward who are just starting with Arduino to ATL Tinkering Lab students building their first health-tech wearable. It’s also ideal for B.Tech ECE or biomedical final-year students prototyping a wearable UV monitor for their Smart India Hackathon problem statement, and for parents introducing practical STEM to kids concerned about sun safety during outdoor sports.

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.