Scale per-key V component by global V component rather than ignoring per-key V component - #9
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…per-key V component
timeToy34
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Aug 23, 2026
A second lighting surface beside Corsair: a Keychron Ultra on its cable or 2.4 GHz receiver, driven over the raw-HID protocol the Keychron Launcher uses - no driver, no firmware of ours. The keyboard's mixed mode gives the F-row to the app and keeps the user's effect on every other key; everything the app changes is read first and put back on Quit (which exits without unwinding, so the tray hands the keyboard back explicitly), and the protocol module cannot spell either flash-save command. A snapshot file lets a killed app restore on its next start instead of capturing its own work. Shared between surfaces now: the palette, by F-row position rather than LED id, and a Scene that decides when a frame is due and doubles as the clock. KeyboardStatus is per surface; the Keyboard panel lists each; doctor gained a keyboards section. Found on hardware: the firmware pushes an A3 report on a layer change, so an exchange reads until the reply that echoes its command. Stock Ultra firmware ignores per-key brightness; firmware/keychron-ultra carries Keychron/zmk#9 as a patch, a Docker build and a flashing guide. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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See my equivalent qmk_firmware PR here: Keychron/qmk_firmware#492
Applies the same changes on ZMK. Tested on Keychron Q6 Ultra 8K.
Video of OpenRGB Effects Plugin with an effect that varies per-key brightness:
https://www.youtube.com/watch?v=vb103j4zNA8