Keyboard

Nix flake to build the customized QMK firmware of my keyboard, a Anne Pro 2 (C18).

(Yes, https://github.com/qmk/qmk_userspace is a thing but adding the flasher + shine firmware + nix goodness would be annoying)

Development

Best to do qmk clone and prepare environment as the packages do here.

Improvements

• Somewhat reproducible building
• Use macros to replicate more of vim outside of vim
• Can control mouse with it

Issues & attempted fixes

• LED turns on when plugging in only sometimes without possibility of reflashing (but always after flashing)
  • Upgraded to 2025 version
  • Tried reducing baud rate
  • Fixed other issues
  • Add a reboot button (doesn't seem to do anyting)
  • Fix reboot button (now it works, and fixes the issues sometimes...)
• Can't set default animation (or manual mode?), either from post_init() or buttons
  • Tried running post_init() on demand (e.g. on Caps Lock)
  • Tried not setting masks on boot
• LED color updates visibly propagates
  • Tried using manual mode and setting by row (get overriden by animation since can't enable manual mode)
  • Setting by rows using mask
• Sometimes it goes into a glitch state where it only types \
  • Figure out which pattern sequence triggers that
  • Upgraded to 2025 version (fixed it, it seems!)
• LSHIFT + RSHIFT + B doesn't set it in IAP mode (anymore?)
  • Find where it used to be in the code (didn't find anything)
  • Reimplement it myself
  • Enable commands
• Make bluetooth work https://github.com/qmk/qmk_firmware/issues/18547
  • Upgrade to 2026 version
  • Flash https://releases.obins.net/annepro2c18/firmware/1.14.1-alpha/ap2_c18_22_ble.bin
  • Reduce baud rate to 57600 https://github.com/qmk/qmk_firmware/issues/18547#issuecomment-2608852087
  • Forget on both side, then re-pair, and connect twice

Other

In case ever needed (though flasher can even do BLE so why would you), obinskit is super slow to download, I have it backed up.

It can be run with:

nix-store --add-fixed sha256 ObinsKit_1.2.11_x64.tar.gz
NIXPKGS_ALLOW_UNFREE=1 NIXPKGS_ALLOW_INSECURE=1 nix run --impure nixpkgs/nixos-23.11#obinskit