Big news (at least in the Dobsonian community!) is that ServoCat will no longer be available. This had to be the most widely used and available drive system for Dobsonian, both premium new builds and diy installations.
In response Craig and I have decided to release the design of our ScopeDog drive system for amateurs to use for their perosnal use. During COVID lockdown the ScopeDog design had been refreshed and is now much easier to make, plus it is about 1/4 the size.
If you are interested, head over to the new ScopeDog design pages, starting here.