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Old 12-12-2010, 10:37 PM   #37 (permalink)
bobski
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Quote:
Originally Posted by dcb View Post
I mean sheesh, 40 cent xtal vs 30 cent resonator + $2.73 RTC module?!?
Fixed that for ya. The sparkfun module, while convenient for breadboarding, is a ripoff IMO. If we're talking about swapping around system clock sources it's only fair to compare component-level prices, even if the components require a patch of PCB.

Quote:
Originally Posted by dcb View Post
Based on the figures here, my guess is that your inaccuracies are due to using a ceramic resonator instead of a crystal.
That's entirely possible. It certainly looks ceramic, rather than one of the metal-cased components I've seen on other board designs.
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