I ran a modified wall clock driven by a homebrew Oncore/AVR uController box for a few years. It worked pretty well even though it was open loop, I had code for synchronizing the second hand with the GPS, and it would wind itself forward to adjust for DST. Eventually it broke down, so I bought an OnTime analog PoE display/clock and have been very happy with it, the Symmetricom looks like the same thing re-branded and at less than half the price.
On Wed, May 29, 2013 at 10:26 AM, Michael Tharp <[email protected]>wrote: > On 5/29/2013 12:11, Robert Darlington wrote: > >> I ordered two PoE clocks, one with the 12 hour face, one with the 24 hour >> face. Earlier this week I considered using the Vetenari Clock project >> circuit board to control a cheap analog clock movement and have it do my >> bididng -however I can't write the code in $99 of my free time! >> > > Note that the clock in the Vetenari kit is just a cheap quartz clock like > you could get anywhere, and the replacement board it comes with isn't of > any use if you're trying to do something different. Basic quartz clocks are > not a good choice for hacking into a precision display because they can > only tick forward in one second increments, with no way to know what time > is being displayed nor a reasonable way to adjust forward or backward an > hour for daylight time changes. In other words, you can make it tick > precisely but you can't really set it. > > I'm sort of interested in getting an analog WWVB type clock and seeing how > much work it would be to coopt *that* hardware since it is designed to set > arbitrary times, but I have a feeling I'd be better served making my own > mechanics with a stepper motor and reduction gear. Of course a digital > clock would be much less complicated, which is what Miguel was asking about > to begin with, but that's not nearly as much fun. > > -- m. tharp > > ______________________________**_________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/** > mailman/listinfo/time-nuts<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.
