The OSH Park boards came today, so I built one of them and did some initial testing.

I tested the board this morning and all seems to be working properly. I'm still waiting for the motor screw terminals so it's not "done" yet, but all systems are working.

In the repo, I updated the firmware to make MS1 and MS2 (microstepping settings) addressable by the Trinket. I'll add further firmware updates as they're made, but there probably won't be any large changes.

I'm thinking of running one more rev of the board to add mounting holes for an enclosure, and a better footprint for the rotary encoder, whose fit is not great at the moment.