Soldering

LCD

Encoder

Key

LED

Battery

Keycap

Firmware

Firmware

The software will automatically build and release by github action

https://docs.zephyrproject.org/latest/develop/getting_started/index.html

certainly have Win/Linux support, but google by yourself
Install Homebrew

brew install cmake ninja gperf python3 python-tk ccache qemu dtc libmagic wget openocd

python3 -m venv ~/zephyrproject/.venv
source ~/zephyrproject/.venv/bin/activate
pip install west

west init (where project config is for example ~/zephyrproject)
cd ~/zephyrproject
west update
west zephyr-export

west packages pip --install pyelftools protobuf grpcio-tools

1. config/boards/shields/sofle/sofle.conf (Shield Default): This file represents the baseline defaults provided by the creator of the shield. It is loaded first.
2. config/sofle.conf (User Override): This is your personal user configuration file. The ZMK build system automatically looks for a file named <shield_name>.conf in your config/ directory. It is loaded after the shield defaults. What this means for your setup: Because Zephyr/ZMK's Kconfig system processes configuration files in order, the last defined value for any setting "wins".

By default is main branch build for ZMK 0.4
The v0.3 tag for ZMK 0.3 stable version
For ZMK 0.4 (the version currently on the main branch):

source ~/zephyrproject/.venv/bin/activate
west build -s zmk/app -p always -b nice_nano//zmk -S zmk-usb-logging -- \
-DZMK_CONFIG=$(pwd)/config \
-DSHIELD="sofle_left nice_oled"
west build -s zmk/app -p always -b nice_nano//zmk -- -DZMK_CONFIG=$(pwd)/config -DSHIELD="sofle_right nice_oled"
west build -s zmk/app -b nice_nano//zmk -- -DZMK_CONFIG=$(pwd)/config -DSHIELD="settings_reset"
west build -t pristine

• -S studio-rpc-usb-uart for zmk studio
• -p always same as pristine build
• -S zmk-usb-logging for debug mode, then connect serial port sudo tio /dev/tty.usbmodem41301