ZeBadge: The community badge - what?
summary
An open source conference badge is built from a Badger 2040 e‑ink board running CircuitPython, an Android Kotlin app, and a USB CDC serial protocol that sends base64 commands (name, metadata, payload). Images are converted to luminance, dithered with Floyd–Steinberg dithering, packaged, stored to disk because RAM is tiny (~4 MB storage), and rendered with a ~3 second e‑ink refresh. Hardware exposes five front buttons, two back buttons, and the system mostly works though accidental disconnects require reflashing and there is no iOS support.
AI-written summary · about
chapters (6)
- 0:00Introduction and team
- 1:09Project overview and hardware
- 10:06Messaging protocol and device setup
- 18:53Android app and dithering process
- 27:26App implementation and demo
- 29:56Call to action and resources
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