Makes sense with the higher resolution telescope to help the tracking.
I have a focuser I built using UNO and a small inexpensive (ridiculously so) stepper motor.
I took a side road from the originators plan and put a 12 volt DC motor in mine so I didn't have to A. Step down the 12 V to 5 V. B. Get more torque.
I put the drive on the fine adjust of my telescope's focuser and the total gives over 23,000 steps of focusing. It works out to steps of .00123 of an inch.
Far finer than my shaky old hands are able to do now. But the best part was being able to control the fine focusing with my computer, and never touching the equipment.
I would imagine your NEMA 17 steppers have a better drive train in them as well. I think those are an industrial design.?
Well done solution!
