June is a UV exposure sensing bracelet by Netatmo. It communicates over Bluetooth low energy to iOS devices, tracking your exposure over time and triggering reminders to reapply SPF. The battery recharges over USB and lasts a month. Check our guide on the Adafruit Learning System for more photos.
The tiny clip easily passes as jewelry, and one of the shiny facets has some holes that let lights in to the UV sensor. We tried to get inside using my typical prying and cutting tools, with no luck. After two hours soaking in acetone, June popped right open.
We used a USB microscope to identify parts on the board:
- NRF51822 Nordic bluetooth low energy ARM cortex chip
- 16 MHz crystal
- 32 KHz crystal
- flex PCB antenna
- SWD programming pads
- CR1220 rechargeable coincell
- battery charging circuit
- UV LED die
Every Wednesday is Wearable Wednesday here at Adafruit! We’re bringing you the blinkiest, most fashionable, innovative, and useful wearables from around the web and in our own original projects featuring our wearable Arduino-compatible platform, FLORA. Be sure to post up your wearables projects in the forums or send us a link and you might be featured here on Wearable Wednesday!
Have an amazing project to share? Join the SHOW-AND-TELL every Wednesday night at 7:30pm ET on Google+ Hangouts.
Join us every Wednesday night at 8pm ET for Ask an Engineer!
Learn resistor values with Mho’s Resistance or get the best electronics calculator for engineers “Circuit Playground” – Adafruit’s Apps!
Maker Business — Lessons Learned Scaling Airbnb 100X
Wearables — ABS ABC
Electronics — When do I use X10?
Biohacking — VICE Reviews The Internet’s Top Five Nootropics
No comments yet.
Sorry, the comment form is closed at this time.