In version C, the IDC connector had to be mounted to bottom of PCB (I screwed up the orientation)...It work perfectly but I would prefer all components on the same side (aesthetic/logical), so to Version D.

Version 2.0D has been tested and works perfectly, once again, thanks to PCBWay for the fabrication.

As to a keyboard, you can use my Basic Keyboard design (hand assembled, just need PCB and parts), or you can design your own, be it a keypad, macro pad or full sized keyboard... 

The important point is you don't have to design the logic, just use the Keyboard Module and you are QMK/VIA ready. Just change my code to suit your needs...

See my git for example code here: EN14

Notes:

If your wondering how you can test your code, I include a breakout / breadboard friendly converter PCB here... (includes link to Gerber Files and KiCad Files)

Mike