wvreeven wrote: Thanks. It sounds like you'll need a custom INDI driver to be able to use your mount with Ekos. As I said before, it is not possible to use the ST4 port directly from the PI so you will need to find a way to make the Arduino respond to guide command coming from the PI.

Perhaps it would be a good idea to start a new thread for this since we are deviating from the original Astroberry post now quite a lot.

Sorry for the deviation, but thank you for your help.

I will have a think about what options there are and when I can frame a more specific set of questions I will start a new thread.