Build a Handheld UV Meter with Arduino Nano + VEML6075 — Monitor Sun Safety in Real Time

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

As summer peaks across India, knowing your UV exposure becomes a daily necessity. With this kit, young makers build a portable UV meter that reads UV intensity from the ML8511 sensor, interprets it as safe, moderate, or high, and shows the result on a bright 16×2 LCD while a green or red LED lights up. It’s a working weather instrument that teaches real-world environmental monitoring and can be carried outdoors to test sunscreen, shade, and cloud cover.

What You'll Build

You’ll assemble a complete UV sensing station on a breadboard. Once powered, the ML8511 UV sensor continuously measures solar UV radiation, and your Arduino code converts the analog reading into a UV index level. The LCD displays the current status in clear text — “UV: Low/Safe,” “Moderate,” or “High/Danger” — and two RGB LEDs glow green, yellow, or red to match. The whole circuit runs off a 9V battery, so you can take it outside and test it under real sunlight.

What You'll Learn

• How to interface an analog UV sensor (ML8511) with Arduino and interpret its output
• Wiring an I2C LCD backpack to reduce display pin count and simplify connections
• Using conditional logic to map sensor values to UV index categories and drive visual outputs
• Practical skills in breadboarding, component handling, and battery-powered circuit design

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

CBSE Class 6–10 students exploring sensor-based science models, ATL Tinkering Lab members who need a quick environmental monitoring project, and parents looking for a screen-free STEM activity during holidays. Because the build is completely solderless and uses an I2C backpack to keep wiring simple, even a 10-year-old can complete it with minimal adult help. B.Tech ECE first-year students will also find it useful for learning basic sensor interfacing.

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.