jmel

Thanks - although I don't have access to a 3d printer (the urge to buy grows greater each week...), I figure I can use an online service to get it printed. The 1406126 thing looks best in my case (I didn't want to fuss with belts). I didn't know if there was a specific bracket for a nema 17 and at65edq... I was really looking for a flange style mount, but this might work. My only fear is that if I use a plastic bracket, that it will break... Now, I can see one advantage there though. If for some reason the stepper motor binds up on the focuser, the path of least resistance breaks first; the bracket; rather than the focuser. I plan to use the nema 17 in half step or quarter step mode to reduce the torque a bit. Going to test that out this week. EDIT: something like this, but with a smaller bell end to fit the focuser housing on the feather touch: https://www.thingiverse.com/thing:2720575

Hey everyone - I came across this thread via a search on the ol' I just built one of these: http://www.scopefocus.info/arduino-focuser-2 I'm looking at building a different unit, that I saw here: https://www.cloudynights.com/topic/594658-pnp-focus-the-simplest-ever-arduino-focus-controller/ I'm just struggling with one last bit - how to attach to the scope itself. I have a 5mm to 8mm coupler for the shaft of the focuser, but it seems the best way to attach would be some sort of flange to the focuser housing. I have an at65edq with a feather light focuser (rack and pinion). I figured since so many here are building similar devices - they might have some thoughts about attachment...