This is my first attempt at a custom keyboard. It's inspired, among others, by https://github.com/itractus/KeyBored
The firmware is located at https://github.com/joelproko/qmk_firmware/tree/jopr

This is a layout of what the microcontroller will probably send for which key:

"default":

Keyboard Layout Editor link

"modded-white": (based on https://github.com/mw8/white_keyboard_layout)

Keyboard Layout Editor link

This a keycap design for the latter:

Keyboard Layout Editor link

There's a PDF of the schematic and a PDF of the PCB (and a version with separate pages for each layer)

2019-06-22:
So far, the PCB and the keycaps have arrived. I made a low quality photo on my phone.