|
+1 for myFocuserPro as suggested by David. It has a PC app, ascom driver and options to add temp sensor etc.
The site has all the instructions needed to sort out microstepping and gears. Make sure you read it. Mine is attached directly to the focuser using a flexible coupler. And 1/32 microstepping gave me 15 steps in the critical focus zone - more than enough.
It's really simple to make. I had an old freetronics Uno and soldered the few components needed onto the Uno. Used a NEMA14 200step/rev motor - I got one with 23N.cm holding torque which was enough to direct drive the focuser.
Last edited by ChrisV; 04-12-2018 at 10:00 PM.
|