What' the frequency accuracy for the resonator? I've never used a resonator so, maybe they just aren't very accurate compared to crystals. 3 seconds error in 10 minutes is only 0.5% (3/600*100). Paul > Has anyone either used this sample or technique before. When I try to use it > for controlling a 'clock', it seems to run a little slow (looses about 2-3 > seconds over a 10 minute period). > > > The displayed seconds seem correct, but after observing the > display for a some > time (10 minutes), the 'clock' seems to run slow. -- 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