Yea the focussing is a separate project but will be using the same arduino board for economy. I have a JMI motorised focuser already and its controlled from a hand controller. I'd like to get that working via the laptop and possibly eventually write an ASCOM driver for it so software can do the focussing.
Albert White MSc FRAS
Chairperson, International Dark Sky Association - Irish Section
www.darksky.ie/