My plan is to use the open source project myFilter Wheel: sourceforge.net/projects/myfilterwheel-ascom-diy/ but could of course use some other. At the moment I don't think there is any INDI driver for it, only ASCOM. When I have finished the hard ware I have to solve this driver problem. Long time ago I read somewhere that there are some templates that can be used when making INDI drivers. But where to find them ?