Stone has been a trend, from agate slice jewelry to glowing salt crystal diffusers. Kat Kelsch decided to combine stone and glow using a shimmery geode necklace. Working with electronics and jewelry is always tricky because it is hard to hide the circuit, however, Kat managed to get the illumination while keeping the natural beauty of the geode as the focus.
An Adafruit Trinket microcontroller sits on top of a battery case with wires intertwined around the original necklace chain. Two Neopixels glued to the back of the geode provide the light show, allowing Kat to have coordinated outfits. I really like both the red and blue glow as they bring reminders of lava and water.
The battery case and controller hide nicely behind the neck, keeping the tech to a minimum. I should mention that I found the beginnings of this project a week ago while scrolling through my Twitter feed, so seeing the finished necklace is really exciting. One of the funny moments comes from Kat’s description of parts, with this last item:
$1 to the swear jar when I flicked solder on my hand
I guess she will need to work on some more jewelry to cover that burn. Seriously, this is a cool project and make sure you follow @katkelsch to see more electrical engineering in the wild. Have you made some blinky jewelry? Send us your pics or videos and we’ll give you some cred.
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!