I'm busy building a electronic lock system on a 16F628 and would like the pic to log the date/time of when the lock is opened. Is the pic accurate enough to keep track of its own date/time through software or should I use a RTC to do this - I've been reading up on the DS1302/7 and it looks like it will also do the trick.
How accurate are these RTC's though - after a few months will the time be way off?
Update: did some more searching on the accuracy
https://www.electro-tech-online.com...in-ds1302-based-clock.23358/?highlight=ds1302
What will something like a tv/microwave use as mine seems to stay accurate for months on end?
How accurate are these RTC's though - after a few months will the time be way off?
Update: did some more searching on the accuracy
https://www.electro-tech-online.com...in-ds1302-based-clock.23358/?highlight=ds1302
What will something like a tv/microwave use as mine seems to stay accurate for months on end?
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