Been working very diligently on this: Ender 3 upgrade board that has Trinamic drivers with software configuration as well as a 32bit processor. The board also features a direct plugin for a Pi Zero so Octoprint can be done easily and without external wiring or anything. There are two ports for z-probes- one is a direct plugin for a 24V inductive sensor (no voltage divider needed), and the other is for a BL-Touch setup. The hotend cooling fan is also always on, and the main part cooling fan is PWM controlled.
Would love to hear everyone’s thoughts on this! I just sent it off for fitment prototypes so any comments for a working revision would be much appreciated!