Flexboard: Developing Zephyr on a Keyboard That Runs It
summary
Build: a full‑size mechanical keyboard PCB and two cases that run Zephyr plus a customized fork of ZMK; hardware uses an NXP K22 MCU and a separate LED controller after discovering MCU‑driven LEDs sag performance. Software: board bring‑up uses a West manifest, driver work upstreams a temp sensor but keeps a downstream LED animation and a forked K22 register set. Novelty: per-led backlight control and a dynamic keymap reload implemented over USB feature reports; the keyboard boots and the features work with DFU updates.
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chapters (8)
- 0:00Project introduction
- 2:05Hardware and PCB design
- 3:48Board prototyping
- 6:18Porting Zephyr
- 13:32ZMK firmware basics
- 17:30Advanced features
- 22:58Project retrospective
- 26:37Q&A session
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