> Had a quick scan, I think it looks like an excellent tutorial Thanks. Most of the information is out there but, as is so often the way, it's fragmented and needs putting together in one place to be the most helpful. I don't like spending time cobbling things together, sure nobody else does either. And you can't really stop at just a code example > Seems to be very well laid out and the quality images will probably > help to make it easy to digest Pictures do help explain how a bit gets from one place to another Haven't exercised my 3D thinking like that for a while. Sure I could feel my ears being twisted around from the inside > By the way, how does one go about putting a tutorial up on piclist.com? Drop James Newton a line --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .