[time-nuts] locate 6 digit digital clock
William H. Fite
omniryx at gmail.com
Wed Jun 8 20:07:27 UTC 2011
I think he wants a clock that will actually tell time, rather than one that
merely blinks *12:00...12:00...12:00...*
On Wed, Jun 8, 2011 at 3:10 PM, J. Forster <jfor at quik.com> wrote:
> Why not just buy or scrounge a small microwave oven or VCR?
> > Please add my "me-too" to this discussion.
> > I would like to see a clock that simply tells time, reminiscent of the
> > ones I put together in the 1970s, but with LED displays
> > large enough to read from across a darkened room. I would prefer 24-hour
> > format and I want a 6-digit display with seconds.
> > For accuracy, I would want an internal TCXO, with the option of using a
> > MHz or 1 PPS external signal when available,
> > but I want the clock to automatically switch to the internal timebase if
> > the external signal is disconnected or lost
> > With a PIC I would like to see a switch for PDT/PST, so I don't have to
> > reset the clock twice a year. I would also like to see
> > an option for having the clock be self-setting or self-synchronizing by
> > adding an inexpensive GPS module.
> > I don't need date and I don't need DOW or DOY as I already have other
> > clocks and watches that give me that information.
> > It might be useful to have a smaller second line that would show me
> > and show me the time in UTC to keep track of
> > what time it is back in the "old country" when I want to listen to Radio
> > Denmark on the Internet, but this would add to the
> > complexity and the number of solder points.
> > And I would like all this to fit in a spare HP 2U half-width rack-mount
> > case that I have saved for that purpose. This would
> > be a companion to my Thunderbolt GPSDO which is housed in an identical
> > case. One option would be to mount the clock
> > in the same case as the Thunderbird, and have the second line display
> > choice of GPS signal.
> > -- Flemming Larsen, KB6ADS/OZ6OI
> > ________________________________
> > Fra:Brooke Clarke <brooke at pacific.net>
> > Til:Discussion of precise time and frequency measurement
> > <time-nuts at febo.com>
> > Sendt:7:12 onsdag den 8. juni 2011
> > Emne:Re: [time-nuts] locate 6 digit digital clock
> > By using a PIC you can do much more than just tell time, for example
> > display the Day of the Week and because the calendar is good back to
> > 1800 something you can set the clock back that far and know the DOW.
> > The next step was going to be to install a table of leap seconds so
> > that you could replay any of those events in history. See:
> > http://en.wikipedia.org/wiki/Zeller%27s_congruence
> > Have Fun,
> > Brooke Clarke
> > http://www.PRC68.com <http://www.prc68.com/>
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