Another option might be one of these:
http://www.hrclockmovement.com/cpdetail?product_id=741
I've been meaning to get one of these but haven't got round to it, so I
can't vouch for it's longevity. But it does have position sensing hands
and you can point it to an ntp server of your choice. Only updates once
a day to it may not be time nutty enough...
On 14/12/22 07:09, Bob Camp via time-nuts wrote:
Hi
I realize that this is a bit of an odd project, but this is Time Nuts …..
I want a analog wall clock that reads out GPS time. As far as I can tell, nobody
is crazy enough to make one and sell it in the open market. If indeed there is
one out there, that would be great. This does not have to be a project.
If it is a project, I’m lazy, I don’t want to set the thing and then count on it never
missing a beat. I want a movement that has some form of feedback. The
WWVB clocks have a movement like this. I could tear one apart and try to
reverse engineer the guts. That sounds like. a project inside a project.
Does anybody sell feedback movements like this in the hobby market? If so has
anybody used one and can vouch for it working for more than a few months?
Indeed, doing it with a display of some sort would be easier in some respects.
For now at least, I’m looking for a mechanical gizmo with hands that move.
If it reads out 12 hour time that’s ok. 24 hour time would be super cool, but
it’s not vital.
Anybody know of a source?
Thanks!
Bob
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Hi
Turns out that the folks at American Time:
https://www.american-time.com/
Make a mind boggling range of wall clocks with various methods of synch ( or not …).. Unlike
a lot of outfits these days, they are quite happy to deal with / sell to individuals. There’s now
a couple of PoE clocks headed this way.
Very nice folks to deal with and highly recommended !!!
Their product also shows up on eBay, but mostly at prices that make one wonder. Given the range
of products, you might have to shop for quite a while to find one that made sense at an attractive
price.
( yes most of their products have a definite “school clock” look …)
Bob
On Dec 17, 2022, at 5:20 AM, Andrew Davidson via time-nuts time-nuts@lists.febo.com wrote:
Another option might be one of these:
http://www.hrclockmovement.com/cpdetail?product_id=741
I've been meaning to get one of these but haven't got round to it, so I can't vouch for it's longevity. But it does have position sensing hands and you can point it to an ntp server of your choice. Only updates once a day to it may not be time nutty enough...
On 14/12/22 07:09, Bob Camp via time-nuts wrote:
Hi
I realize that this is a bit of an odd project, but this is Time Nuts …..
I want a analog wall clock that reads out GPS time. As far as I can tell, nobody
is crazy enough to make one and sell it in the open market. If indeed there is
one out there, that would be great. This does not have to be a project.
If it is a project, I’m lazy, I don’t want to set the thing and then count on it never
missing a beat. I want a movement that has some form of feedback. The
WWVB clocks have a movement like this. I could tear one apart and try to
reverse engineer the guts. That sounds like. a project inside a project.
Does anybody sell feedback movements like this in the hobby market? If so has
anybody used one and can vouch for it working for more than a few months?
Indeed, doing it with a display of some sort would be easier in some respects.
For now at least, I’m looking for a mechanical gizmo with hands that move.
If it reads out 12 hour time that’s ok. 24 hour time would be super cool, but
it’s not vital.
Anybody know of a source?
Thanks!
Bob
time-nuts mailing list -- time-nuts@lists.febo.com
To unsubscribe send an email to time-nuts-leave@lists.febo.com
time-nuts mailing list -- time-nuts@lists.febo.com
To unsubscribe send an email to time-nuts-leave@lists.febo.com
Ah, the joys of childhood memories of the Simplex clocks in the schools
back in the day. (It was the late 1960s.)
In high-school I was the teacher's aide for the electric/electronic
shop. I was a strange duck in that I took all the college-prep courses
but also all the industrial arts courses too. (I liked to build stuff
AND understand the science and math behind it.) As teacher's aide I had
my own set of keys for all of the industrial arts buildings, including
the electrical closets. After all, I had to be able to reset tripped
circuit breakers and admit maintenance personnel. The clocks were my
first attempt at what would now be called "hacking".
In the main electrical room was a box that seemed to have nothing to do
with any thing else. I opened it up and discovered references to the
Simplex clock system. Hmm, A little experimentation and I discovered the
lines that controlled the clock setting system, including the "advance
to top of minute" line. Everything was 120VAC control making it easy to
source the setting signals. Getting the assistance of others, I
determined that doing setting commands in one building affected the
clocks in the whole school AND the master clock. So I built my own
control box for the clocks.
One of the features was a "get out of school early" switch, which
connected the bell circuit to the "advance to top of minute" circuit.
Since the bells were sequenced by the master clock, every time the
master clock would activate a bell in our building (at the top of a
minute), it would advance all the clocks by 1 minute. Since no single
class lost more than a couple of minutes, the teachers didn't do
anything about it and just stuck to the time on the clock. At the end of
the day the clocks would have accumulated about 20-25 minutes of error
and we would go home early.
I got away with this for several weeks before someone reported me to the
principal. Stupid me, I told too many people. (It WAS a very cool hack
in those days before we had computers to play with.)
Many years later the school district raised money for some project by
building a wall of memory bricks that were sold to the alumni of the
school district. An alumnus could purchase a brick and designate an
inscription. It would then be put into the wall. Since both my mother
and my aunt had attended the same school district they were able to buy
a brick. The inscription?
Brian Lloyd - He advanced time.
This triggers another memory -- the one where I realized I was a time
nut. I discovered WWV when I was about 7. I became obsessed with making
sure that all the clocks and watches in our house were regularly set to
WWV. (I would check my watch every morning.) I still do, only now most
of the clocks are set to GPS, WWVB, or NTP running off my local
GPS-disciplined NTP server. Those that aren't are still checked and
reset every week. I suspect there are others here who share that obsession.
--
Brian Lloyd
706 Flightline
Spring Branch, TX 78070
brian@lloyd.aero mailto://brian@lloyd.aero
+1.210.620.0011