Testing the Module with the 34 pins 1.27mm connector is almost impossible so I added an adapter board.

This board is breadboard friendly if you use pin headers, with pin sockets you can use common 2.54mm jumpers. Note, this adapter is for modules with the 34 pin connector...

The development board is fine for testing code and now you can check button action with the extender. Once your happy, you can plug it into one of the basic keyboard with the 34 pin socket in the project and you have a QMK/VIA keyboard with macros and RGB...

Gerber Files