[time-nuts] Wall Clock that takes 1PPS input

[Jerry Hancock]

I’ll have to go read about the Lord Vetinari clock.  He is one of my favorite book characters.

Thanks for all the tips.  I might have an old quartz clock around here to test.  I assume I can just measure the pulse while it is running and generate the same with the 1PPS output.  I’ll have to program a way to advance it, maybe use an Arduino or some other micro and add a few switches.



> On Jan 2, 2020, at 12:43 PM, Philip Gladstone <pjsg-timenuts at nospam.gladstonefamily.net> wrote:
> 
> It depends on how much work you want to do. I have various clocks driven
> off 1PPS (or 2PPS) signals. The cheapest approach is to take almost any
> quartz clock with a second hand and drive the coil directly (you need to
> pulse with alternate polarities -- i.e. there are even and odd pulses).
> 
> I was introduced to this technique by building a Lord Vetinari clock (e.g.
> https://www.instructables.com/id/Lord-Vetinari-Clock/ )
> 
> I purchased something like
> https://www.ebay.com/itm/8-5-INCH-KAPPA-SHIPS-BOAT-YACHT-MARINE-RADIO-ROOM-SLAVE-NAVIGATION-CLOCK/143072681993?hash=item214fcbe009:g:Gn8AAOSwYTtcKPIp
> and
> it turned out to be a 2PPS clock....
> 
> Fun getting this stuff working!
> 
> On Thu, Jan 2, 2020 at 3:32 PM Jerry Hancock <jerry at hanler.com> wrote:
> 
>> Hello,
>> 
>> I looked around but can’t find a wall clock that would take a 1PPS input
>> signal to drive the minutes and seconds.  I’ve made digital modules using a
>> lot of different displays but would love to have a large, 14” or so with a
>> second hand, wall clock that I can drive with 1PPS.  The old IBM clocks,
>> etc I found take a pulse on the minute.  I have an old pendulum clock I can
>> drive with a solenoid but thought I would ask here before going that route.
>> 
>> Signal levels aren’t important.
>> 
>> Thanks
>> 
>> Jerry
>> 
>> 
>> _______________________________________________
>> time-nuts mailing list -- time-nuts at lists.febo.com
>> To unsubscribe, go to
>> http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com
>> and follow the instructions there.
>> 
> _______________________________________________
> time-nuts mailing list -- time-nuts at lists.febo.com
> To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com
> and follow the instructions there.

Jerry Hancock
jerry at hanler.com