Show HN: I made alchemical-cosmological PCB badges

#1

Post by kaipereira » Wed, Aug 05, 2026, 4:15 PM UTC

Hey guys,

A couple weeks ago, I was in Shenzhen, China for a hackathon and on the first day, we all used the one-day PCB fabrication to make PCB badges to wear during the event. I decided to go a little crazy and make some cool 3D alchemical-cosmological badges.

It's 3 PCB's stacked on-top of each other that's connected using testpoints on each board. The innerboard has a 10 cent CH32V003 MCU that powers the WS2812B neopixels on the outer rings using the testpoints and shines through using exposed soldermask.

If you have any questions about how the design works, feel free to let me know!

Show HN: I made alchemical-cosmological PCB badges
github.com

Re: Show HN: I made alchemical-cosmological PCB badges

#2

Post by Schlagbohrer » Mon, Aug 10, 2026, 9:51 AM UTC

Very fun. Is there an SAO connector for SAO (Silly Add Ons)?

Re: Show HN: I made alchemical-cosmological PCB badges

#3

Post by the__alchemist » Mon, Aug 10, 2026, 5:04 PM UTC

I love everything about this. Good luck in your quest for the electrosofic mercury!

Re: Show HN: I made alchemical-cosmological PCB badges

#4

Post by kaipereira » Mon, Aug 10, 2026, 6:08 PM UTC

Schlagbohrer wrote: post #2

Very fun. Is there an SAO connector for SAO (Silly Add Ons)?

There’s no SAO connector because I wasn’t thinking too straight at 4am designing these badges, but I’ll make sure to add one in future badges, because I agree that they’re really cool!