This earring is the result of an idea integrating a rechargeable coin cell in the middle of a circular PCB and placing LEDs and components around it. To minimize the overall earring diameter, LEDs and other components are mounted to the edge of the PCB by placing the pads on the top and bottom layer of the double-sided PCB. The edge mounted LEDs making the LEDs visible from all sides and giving a nice round light effect. Also it’s possible in the future to add some diffusor around the earring.
This project is work in progress and the shown pictures are the second iteration of the PCB after a first proof of concept. Tested battery life is at least 2 hours with a continuous animation.
The PCBs of this project where kindly sponsored by PCBWay. Quality is outstanding, especially with the tight tolerances for the milling of the in- and outside to ensure a perfect battery fit and the easy soldering of the edge LEDs. Check out their website!