ZMK firmware for Wireless Corne

ZMK firware for my wireless Corne split keyboard with nice!nano controllers.

Keymaps

Steps to update the keymaps (which I always forget).

Make changes in corne.keymap using Keymap Editor and push to github
Wait for GitHub Actions to finish the build. Then download the artifacts.
Put the keyboard into the bootloader mode by pressing the reset button twice.
- or, use a tweezer to short circuit RST and GND pins (see the pictures below). When success, there should be a storage drive named NICENANO shows up in the Finder.
Connect the left keyboard to the computer via USB. Use a proper USB-C cable and not the magnetic one.
Copy the left firmware to the NICENANO storage. When success, the storage will be automatically unmounted.
Repeat steps for the right side keyboard.