I managed to get my two channel focuser driver up. It is (including visual studio project) available here: https://sourceforge.net/projects/arduinodualchannelascomfocuser/?source=navbar It uses one Arduino Nano to control two focusers. The protocol is based on Moonlite, and the main difference is that TempComp is handled by Arduino, not the driver (which I believe Moonlite does). I have not tested it fully since I have only one telescope, on which one channel focuser works fine. You should be able to connect the focuser via Moonlite driver directly, but my driver supports more commands than Moonlite so it wont talk to Moonlite focuser (it could be done by removing those additional commands).