One module in my updated Charmware series: a small circuit-board charm that lights up jewelry.
Future versions will have a smaller switch, with some reorganization so that the LED is on the more boring (battery) side, to cast light on the wearer.
All surface-mount components:
Design notes thread (Mastodon)
The prototype boards, in matte black with gold traces, nestled in a bismuth crystal on black rabbit fur.
The board, lit up, built into an earring with iridescent beetle elytra and bike inner-tube material.
Alex wearing the earring, which casts blue light on her cheek.
Two versions: green + silver (HASL) prototype; matte black + gold “arcana” version
Screenshots of the board preview, gold on matte black. The back shows arcane gems and swirls on the left (forming the CR1225 battery clip footprint). The front shows Art Deco/Nouveau-inspired geometric and organic embellishments, forming the circuit (LED + resistor + switch), along with the Charmware logo. Minuscule silkscreen markings provide some guidance. Not shown: vias connecting the front to the battery pads
KiCad screenshot showing the solder mask layers (same as the copper), with a couple of vias connecting the battery through the board