Hello to all, I'm interested in a device that can be used to count revolutions of a slow turning shaft, 10 turns/minute, with 1 or 2 degree resolution. I will then use a Pic to read and limit the number of turns and fractional parts of a turn. Good resolution is important. Any ideas appreciated. Rod -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.