This is my new favorite necklace! It changes color when you touch it.
I get obsessed with a particular type of project and keep on making it again and again until I’m satisfied. I’ve made probably a dozen different LED necklaces. The first one was a sound reactive Ariel the Little Mermaid Seashell necklace, then there was a Cosmic Turtle Necklace, and from there I made an unbreakable resin necklace. Next I simplified things with a 10-minute simple LED necklace and then remade the Seashell necklace with a Circuit Playground. I even did a 3d printed and then metal cast pendant — no LEDs but still lots of fun. My favorite might have been the glass-and-resin Mermaid Moon necklace, now lost forever to the ravages of FedEx.
For all these necklaces, I still haven’t made the perfect one. Updating the code is time consuming (or impossible, in the resin cast necklaces). I want it to go with my outfit! And I’m unwilling to change the colors in Arduino every time I want to wear it.
Enter the Color Touch necklace. This necklace uses a Gemma and two neopixel rings for lots and lots of delicious bright LEDs. The Gemma M0 has capacitive touch pads on the back, which I connected to the front of the metal pendant with a wire. Science is cool. Now, when I touch the pendant on its face, the colors change. I can make it match any outfit! Finally.
We took our time shooting a fun video for this one, finding gorgeous locations to go with my different colored outfits. I hope you enjoy it!
Here’s the tutorial over at Adafruit: https://learn.adafruit.com/gemma-color-touch-pendant-necklace/introduction