El Corazon wrote: indilib.org/media/kunena/attachments/4350/SolderlessFocuser.pdf

That’s the one I built. Pretty simple. I still ended up soldering everything to a Vero board, but it worked immediately. Use a standard NEMA17 Stepper motor (<$10) and DRV8825 controller. You can get them all from Amazon.

That’s what the prototype looked like:

indilib.org/forum/focusers-filter-wheels....html?start=48#54478


The electronics is actually the easy part, fitting the motor to the fine focus knob if your telescope requires more tinkering. That’s where having access to a 3D printer is priceless. I designed and printed all the brackets I needed.

But as you say, this is a rewarding hobby and you learn lots of different things all the time.