I use a Moonlite focusser on my Skywatcher Quatro 200mm F4 carbon.
There are mounting kits available fitting the exact positions of the cuts in the carbon tube.
My control unit is an Arduino with a Moonlite compatible driver that programmed using the equally named Arduino tool.
Also I had to add a stepper bridge.

www.youtube.com/watch?v=tk77TYM8UiA

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