August 10, 2026
Soldered sorcery hits the comments
Show HN: I made alchemical-cosmological PCB badges
A one-day DIY badge build has commenters begging for goofy add-ons and loving the weird wizard vibes
TLDR: A hacker built a glowing, layered badge in a day using cheap parts and shared the files so others can remix it. The comment section’s big mood was playful obsession, with people immediately joking about adding even more ridiculous accessories to an already gloriously extra design.
A maker on Hacker News rolled into the chat with alchemical-cosmological PCB badges—basically glowing, layered electronic name badges designed in a single day for a hackathon in Shenzhen—and the crowd instantly locked onto the vibe: part sci-fi relic, part wizard medallion, part convention flex. The creator says the badge uses three stacked boards, cheap parts, and tiny lights to create a dramatic glowing effect, all while staying surprisingly affordable. Open-source files are included too, which is catnip for the “I could totally make this, but we both know I won’t” crowd.
But the real sparkle is in the reaction. The standout comment wasn’t nitpicking cost, battery life, or whether hand-soldering these would become a life-ruining weekend. Instead, the community went straight for badge culture comedy. One commenter jumped in with, “Very fun. Is there an SAO connector for SAO (Silly Add Ons)?”—which is exactly the kind of delightfully niche, self-aware joke that tells you this crowd is already mentally designing absurd accessories for it. Translation for normal humans: they saw a cool glowing badge and immediately asked, “Can we make it even weirder?”
That’s the whole energy here: less doomscrolling, more joyful nerd chaos. No giant flame war, just a warm little burst of internet enthusiasm where the biggest controversy is whether this mystical glowing disc is already extra enough—or desperately needs more silly attachments.
Key Points
- •The project is an open-source alchemical-cosmological PCB badge designed for the Fallout hackathon in Shenzhen, using a three-PCB stacked structure.
- •The badge hardware uses a CH32V003 microcontroller and WS2812B NeoPixel LEDs.
- •The physical design includes an inner sun PCB and two outer ring PCBs, with one ring rotated 180 degrees for a 3D effect.
- •The board includes a battery connector supporting 2.7V to 5V input, with a small LiPo suggested for power.
- •Estimated manufacturing cost is about $10 per badge at MOQ, with potential reduction to under $3 at higher volume, and firmware is programmed over SWIO using WCH-LinkE or PicoRVD.