> > Here is the link to one of the circuits: > > http://members.tripod.com/xexorz/schematics/dosage.html > > Any advice would be appreciated. How the HELL are you supposed to calibrate that thing?? 100 rads/minute??? That will fry your chitlins before you can think the words! -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads