There have been some discussions previously about using this focuser with Ekos (via Stellarmate on RPi), and I've followed the guides on setting the polling to 5000ms, etc. I tried this, and it works just fine with manual focus, I can get this pretty good. However, I want to autofocus when switching filters. What I do is manually focus reasonably close, then start the Ekos autofocus process. I set the step size to 50, then watch it move in and out by 50 steps. I can see that it goes in and out a few times, starting with 50 steps, then smaller steps, but after a few iterations, it will make some huge changes 300+ steps which will go completely out of focus and then fail.
Does anyone have any experience with this focuser, and have any hints on where to look?