Vision/Division is a full size or split keyboard that can be customized due to its pcb.
For the full Quantum feature list, see the parent readme.md.
Download or clone the whole firmware and navigate to the keyboards/vision_division folder. Once your dev env is setup, you'll be able to type
make to generate your .hex - you can then use the Teensy Loader to program your .hex file.
Depending on which keymap you would like to use, you will have to compile slightly differently.
To build with the default keymap, simply run
Several version of keymap are available in advance but you are recommended to define your favorite layout yourself. To define your own keymap create a folder with the name of your keymap in the keymaps folder, and see keymap documentation (you can find in top readme.md) and existant keymap files.
To build the firmware binary hex file with a keymap just do
keymap option like:
$ make keymap=[default|jack|<name>]
Keymaps follow the format keymap.c and are stored in folders in the
keymaps folder, eg