Building Festival Badges That Sync Themselves Up

Submitted ⁨⁨2⁩ ⁨weeks⁩ ago⁩ by ⁨cm0002@lemy.lol⁩ to ⁨electronics@discuss.tchncs.de⁩

https://hackaday.com/2026/05/20/building-festival-badges-that-sync-themselves-up/