UV Dosimeter Wristband Variant 3
Build a UV Dosimeter Wristband with ML8511 Sensor & 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.
Step outdoors with confidence—this wearable wristband silently tracks the sun’s intensity all day. The ML8511 sensor measures UV radiation and the Arduino Nano calculates your cumulative exposure. When you reach the safe limit, a coin vibration motor gives a gentle alert, so you never unknowingly overexpose your skin, whether you’re in a cricket field or a mountain trail.
What You’ll Build
A battery-powered wristband that shows real-time UV index and daily dose on a crisp 0.96-inch OLED. It vibrates the moment your accumulated UV exposure reaches a user-defined safe threshold, completely phone-free. The final device fits on a breadboard, ready to be placed inside a 3D-printed case—perfect for personal health monitoring during long outdoor sessions.
What You’ll Learn
- Interface the ML8511 analog UV sensor and convert its output to UV index values
- Program an algorithm that accumulates UV dose over the day and resets at midnight
- Drive a coin vibration motor through a BC547 transistor switching circuit
- Display live UV readings, cumulated dose, and vibrate status on the 0.96-inch OLED
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Nano | 1 |
| ML8511 UV Sensor | 1 |
| Coin Vibration Motor | 1 |
| BC547 Transistor | 1 |
| 0.96-inch OLED Display | 1 |
| 100Ω Resistors | 5 |
| 10kΩ Resistors | 5 |
| 100nF Capacitors | 5 |
| 400-point Breadboard | 1 |
| Male-to-Male Jumper Wires | 20 |
| 9V Battery Snap | 1 |
Why Buy This Kit Instead of Sourcing Parts Separately
| Factor | Sourcing Separately | Compoden Kit |
|---|---|---|
| Compatibility checks | You verify every part | Pre-tested as a system |
| Build support | Forums and scattered tutorials | AI companion trained on this exact project |
| Time to first working build | Days of debugging | Hours, with step-by-step guidance |
| Shipping coordination | Multiple sellers, multiple delays | One shipment from Bengaluru in 3-5 days |
Who This Kit Is For
CBSE Class 11–12 students exploring health-tech physics projects, B.Tech ECE/EEE first-years building wearable sensor prototypes, and Smart India Hackathon teams creating personal safety devices. ATL Tinkering Labs will find it a rich hands-on example of environmental sensing. Outdoor enthusiasts—cricketers, trekkers, field researchers—who want a practical gadget to manage sun exposure safely will love the direct do-it-yourself approach.
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.
What if I get stuck during the build?
Scan the QR code on the box to chat with the AI companion built specifically for this UV dosimeter. It understands every component and code line. For human help, send a WhatsApp message and our team will get back to you within a few hours.
Can I adjust the safe UV dose threshold?
Yes, the Arduino sketch is fully editable. You can change the exposure limit to match your skin type or daily schedule. The AI companion walks you through setting a custom threshold value safely.
Does the kit include a 9V battery?
The 9V battery is not included due to shipping restrictions. You’ll find standard 9V batteries easily in local shops. The kit provides the battery snap connector to plug straight into the breadboard circuit.
Can I wear the wristband while swimming?
The electronics are not waterproof. The breadboard and sensor must stay dry. You can design a splash-resistant case (3D printing ideas are shared in the build guide) but full submersion is not recommended.
ML8511 accumulates daily UV dose and vibrates when safe exposure limit reached.
What's in this kit
- Arduino Nano
- ML8511 UV Sensor
- Coin Vibration Motor
- BC547 Transistor
- 0.96in OLED
- 100Ω Resistors x5
- 10kΩ Resistors x5
- 100nF Caps x5
- 400-pt Breadboard
- M-M Wires x20
- 9V Battery Snap
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items