I just installed a Nexdome rotator motor and it uses a USB cable to connect to the computer. I am using a MacBook with the OS X version of KStars (3.4.3).
INDI recognizes the rotator firmware, but then the handshake fails.
I found out that I must have the shutter motor system up and running in addition to the rotation system in order for this to work. The system was hanging while waiting for the shutter.
Perhaps not - I am getting the same error and the Shutter is clearly connected. I can't slew the dome or open teh shutter - despite the driver connecting and reporting the right firmware version.
I've recently tried to get back into kstars after a spell of using Voyager as my daily (because I needed to get imaging done during variable weather conditions and Ekos doesn't handle that too well and I don't have the coding skills to add the new functionality I need!) - a little sad that it's not working.
Be sure the SLAVE and Rotation settings are correct. I have found many times INDI wouldn’t load the settings back and so the speeds were reset back to zero. Thus the dome and shutter wouldn’t move.