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 for the F key. You can find my current code at https://github.com/nbodeux/tmk_keyboard. The code specific to this device is under keyboards/ergopad

Mode 1: Arrow keys and ins,del,etc more like a normal keyboard
Mode 2: F1 - F12
Mode 3: F13 - F24 (for autohotkey)
Mode 4: Shift + F13 - F24 for more macros

I'm Not yet sure what to do with the other two keys, but I'll probably use them for volume or something