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. -- 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 [email protected]. To post to this group, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/cf91fae7-bc4c-4d3b-8b59-9f02b086fa01%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
