threejsconf e-badges greet nearby attendees over ESP-NOW, turning networking into a game
xiaohu · x · 2026-09-03
An update on the electronic badges for threejsconf: each speaker's badge detects nearby badges and says hi 👋 with a randomized animation, aiming to turn meeting people into a social game with a leaderboard of who met who.
Technically it runs on ESP-NOW: peer-to-peer communication with no Wi-Fi needed and low battery drain. The poster quipped that hooking it up to a Grok bot would make it perfect.
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