Anthony Toft wrote: > The 555 is for giving 60Hz without any complicated divisors. I had > thought of doing it in software, but I chose to go the other way. Why? A software solution would require fewer parts and be more accurate since its 60Hz would be derived from the crystal instead of some resistors and a cap. ***************************************************************** Embed Inc, embedded system specialists in Littleton Massachusetts (978) 742-9014, http://www.embedinc.com -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads