> On 7 Sep 2018, at 22:54, gregebert <gregeb...@hotmail.com> wrote: > > Be sure that you get a genuine DS3231; there are a lot of very cheap RTC > boards out there with counterfeit/out-of-spec units. > I think adafruit is a reputable seller. > > When I buy the $1 modules from overseas, I remove the RTC chip and install a > real one I purchased from a reliable source. I had a few laughs about the > inaccuracy of the fake/defective IC. > > These are very accurate timekeepers; I have one that's been running for over > 3 years with less than 1 minute of drift. I've never reset the time so it's > better than 1PPM long-term accuracy. Even if yours does drift a few PPM, > there are compensation settings to solve it.
I must have been lucky, as I have bought cheap Chinese DS3231 modules and so far not observed any inaccuracies or problems. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/A1FBCAE6-1F22-482E-AD96-420583014709%40jsdesign.co.uk. For more options, visit https://groups.google.com/d/optout.
