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

[Philip Gladstone]

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
>
>
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