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Author Topic: millis() off by 20%?  (Read 1525 times)
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if it makes you guys feel better, I got a hold of some SF resonators and OMG they are crap, I have constant upload errors at a reasonable 19200 baud, I cant say they are off by 20% per day, but they sure as heck are not spec

but hey when you buy the cheapest garbage from china your often lucky if it works at all, luckily I got them for free so I didnt waste money on them.
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Hofstadter's Law: It always takes longer than you expect, even when you take into account Hofstadter's Law.
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if it makes you guys feel better, I got a hold of some SF resonators and OMG they are crap, I have constant upload errors at a reasonable 19200 baud, I cant say they are off by 20% per day, but they sure as heck are not spec

but hey when you buy the cheapest garbage from china your often lucky if it works at all, luckily I got them for free so I didnt waste money on them.

It may be that they are crap, but are you sure they are not 16384MHz 16.384MHz resonators rather than 16MHz?
« Last Edit: September 29, 2011, 03:26:14 am by dc42 » Logged

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I don't think you connected the grounds, Dave.
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Quote
16384MHz
16384kHz, surely?
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Hofstadter's Law: It always takes longer than you expect, even when you take into account Hofstadter's Law.
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Yes, I missed out the decimal point.
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I don't think you connected the grounds, Dave.
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Still less than 3% though.
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True, but according to http://www.maxim-ic.com/app-notes/index.mvp/id/2141 there are scenarios in which a clock mismatch of more than 2% can cause problems.
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