Riva:
I had forgotten about this thread and have since used at least one of the RTC modules in another project so cannot do the experiment to confirm/deny if polling the RTC causes slowdown or not. I personally feel that fast polling the RTC does cause it to loose time but others will disagree (hence the idea to do the test).
What do you mean by "polling the RTC" ?
You mean keep reading the RTC ? Is that what you meant ?
Anyway I have this bloody problem as well. I mean I have set the time and date for this stupid DS3231SN with my computer date and time (I wrote a separate program for this and a program for PC to send date time through a serial port) but it has not been even a day it started to go 1 second faster than my computer time. And I'm sure it keeps getting worse and worse.
Seriously what's wrong with this RTC ?
And yes I did keep reading it continuously for a while if that is a wrong thing to do.