These beautiful crystal shrouds are the perfect topper for LEDs, and they have the secret ability of reacting to the environment according to Hackaday. This project was created when Maxim Krentovskiy got frustrated over the lack of small simplistic circuit boards for jewelry designs. So, he decided to create his own, using an ATtiny85 and combinations of either four or six RGB LEDs along with an analog sensor. With a thermoresistor or photoresistor the pendants can react to temperature or light, which allows for interesting possibilities.

Although Maxim does not divulge his secret for the jewelry making, I’m guessing the crystals are wired together and glued as they seem to have a precise arrangement. These pendants are very undercover as wearable tech, making them the perfect accessory. Although this project was created for Hackaday’s #CoinCellChallenge I’m hoping Maxim will continue his exploration into petite boards for jewelry. At Adafruit we do have a beautiful little cluster of Neopixels called Jewel that is perfect for glimmering projects. Take a look at our 10 Minute Necklace to learn how you can combine a Gemma MO microcontroller and Jewel to create your own codable necklace. Just upload different code to match the color of your outfit or design palettes that blink and fade. You are the designer!

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!