$22.95
Pro Micro compatible shield for Apple Keyboard II (M0487).
Precompiled firmware and installation instructions available at https://github.com/willpuckett/zmk-config-ak3
The keyboard membrane is diodeless, so you might get occasional ghosting with home row mods. Locking caps lock does not work in ZMK.
This listing is for the shield ONLY. You'll need to supply your own micro controller and (optional) battery.