Tal wrote: > I just need to know how much material left on the reel to > prevent the problem that I start a long printing without > knowing if the material is going to finish before the print > is done. the resolution I need is not that accurate (about > ~100-500mm) so any mechanical wheel with a pulser will > be enough. Why not move "paper end" sensor away at some distance? Mike. -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics