I read the thread and thought I will have a go at this as well. step one was ordering the parts which so far the only one to turn up was the Arduino nano. so i thought i would plug it into the USB and see how I get on loading things up. I was a little nervous as I am using a Microsoft surface running Windows 10! however all is well with the world. the USB driver found itself when asked to search the interweb, the Arduino software connected via Com9 and allowed me to upload the sketch and library zip files with no problems. AAF2test works a treat and so does the FocusAAF2! now the hard part to fit it all together with some hardware brilliant work on the sketch Tekkydave well done also note I have yet to find any software that doesnt run on WIndows 10 all of the ascom stuff works, Cartes du ciel, PHD2 and backyard Nikon all as good as gold and deepsky stacker flies!