Macro Number Pad

I recently built a ergodox keyboard, and while it is amazing, I do find myself missing the numpad and function keys, so I decided to design this numpad, functionpad thing using some spare keycaps, key switches and an arduino pro micro.

The styling/design is inspired by the Printdox case by AGuyFromOhio: https://www.thingiverse.com/thing:2533064

I'm still working on the firmware, but the idea is to have the F keys on the left, and the 4 keys above the numpad will be used to select 4 modes f