I wouldn't mind a copy too, if you don't mind. Perhaps it warrants posting it to the web somewhere? Josh -- A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools. -Douglas Adams > >If you want I will scan the schematic, my version has threshold adjustment. -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu