I would have thought better. I built a nixie clock from Tubeclocks.com <http://tubeclocks.com/>. Granted it is in a pretty constant temperature, but I doubt that clock varies less than 3 seconds per year. Peter, the designer, sent me some code that takes a 1PPS but I never got it running as I liked the fact that it was undisciplined (like my kids) and still incredibly accurate. I just checked it as it had been running 4 months since I moved it to my new office and I doubt is off 1/5th a second.
Regards, Jerry > On Mar 6, 2018, at 2:59 PM, Mark Sims <[email protected]> wrote: > > Sparkfun is selling an interesting RTC clock chip board. It draws 22 nA. It > has a rather novel clock generator... a tuning fork crystal disciplines an RC > oscillator every few minutes. They claim 3 minutes per year drift. > > https://www.sparkfun.com/products/14642 > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
