My Take at a Custom Split Keyboard. I have Adapted this design from the Keebio Iris Keyboard, which I have and love, but since it did not have enough keys and no rotary encoders I expanded it. I have used the Stl moddels provided by Keebio themselves as a baseline.

The design uses 2 Teensy 2.0 ++ controllers, which are mounted under the Top plate using a remix of GarageSage's. "Teensy 2.0++ Clone Case"

Note: you will need to use the Teensy 2.0 ++ controllers to the be able to conect everything.