Thanks, I really appreciate the offer of the PCB. It is not quite compatible with what I'm doing so I will not take you up on it. I'm using a Pi with Astroberry and going straight into the GPIO headers. I also have a little SDD1306 screen which will flash up the IP address of the unit and what wireless network it has joined on boot.

You have given me a couple of ideas though. I was wondering if I should have a small button pad hanging from the Pi to be able to move the focuser without going into the full on software launch. I never thought of an IR remote, so one of them now on order.

Basing the focus control on moonlight seems to be a good way to go and the commands sent from INDI seem simple. With my program being local and INDI looking like it wants to send to a device, I need to think about how to setup communications. Listening to network sockets and pointing INDI at localhost:XXX is probably the best way.

I can't find a guide for what INDI sends and expects back, so I'll try dropping that code on a spare arduino and watch the comms. Even without a motor attached, it should give me a good clue.

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