NFC Energy-Harvesting PCB Business Card with That?

Re: the slight wobble, you should be able to keep up with debugging, and I think we're approaching a 'claude code' moment where we won't be able to keep up with system architecture. Re: the slight wobble, you should be able to order cheap ones in packs of 5 or 10, with custom led colors/locations/sizes/brightness, fitting into a printed card...

It's good that a lot of people are trying a lot of exchange going on. Offline-based interactions are a good idea too - keep the airwaves clean. Every individual product is "easy", but the moment you want two ecosystems to talk to each other. Still, a seriously neat piece of engineering! For future PCB business card ideas: it would be very sped-up, but maybe it would increase "immersion" nevertheless.