Going through a couple redesigns and commissions later, I've decided to make a modular device, multiplexing rotary encoders, buttons and whatever else, made with a configurator (wip) to generate the setup for the teensy to read (might just use serial + the eeprom instead of reprogramming..)

https://litruv.com/knobber/ if you want to have a bit of a gander what I've got going.

Commission for/u/sluggybear