I just completed a new tutorial over at Adafruit.com — make your own Galaxy Pendant.
I wanted an LED necklace I could wear swimming or hot tubbing. Really, it was Mermaid Glimmer who insisted on it.. she’s getting a lot of use this summer and wanted a little dressing-up. 🙂
It’s easy to waterproof something by sealing it completely in resin. But you run into a couple challenges when something’s fully sealed. First, how do you turn it on and off? And second, how do you charge the battery?
I solved both of these problems using Science. This necklace has an induction coil for wireless charging and it has a tilt-switch inside.. so the necklace turns on when it’s upright and off when it’s laying flat. It also rotates inside the setting so it can be worn while turned off or turned on.
It’s got a 3d printed setting and a 3d printed base. It lasts all night on a charge and uses mosaic glass to diffuse the light. I’ve made 3 of them so far in different colors and I’ll probably do another in rainbow. 🙂