Thanks Jasem,
I'll log the rotation and see what that shows. That might give me a clue what's going on.
I have my dome parked at 100 degrees, home position is at 180 (from my LX200 days wedge parking). I now use an EQ6-R mount that parks on Polaris, I still have to move the magnet to 360.
As soon as I unpark the scope the dome goes to 270. Maybe has something to do with my 180 home?
Strange that it's only with the new Pi 4 though.

Tom

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