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On Sat, 20 Nov 2021 10:56:02 GMT, Jan Panteltje
<pNaOnStPeAlMtje@yahoo.com> wrote:
The sun should be high at noon. Like in the movie.
--
Father Brown\'s figure remained quite dark and still;
but in that instant he had lost his head. His head was
always most valuable when he had lost it.
<pNaOnStPeAlMtje@yahoo.com> wrote:
On a sunny day (Sat, 20 Nov 2021 10:50:17 +0000) it happened Martin Brown
\'\'\'newspam\'\'\'@nonad.co.uk> wrote in <snajtm$1nb9$1@gioia.aioe.org>:
On 19/11/2021 23:54, John Larkin wrote:
On Fri, 19 Nov 2021 21:44:24 +0100, \"Carlos E.R.\"
robin_listas@es.invalid> wrote:
On 19/11/2021 20.59, John Larkin wrote:
On Fri, 19 Nov 2021 19:48:21 +0100, \"Carlos E.R.\"
robin_listas@es.invalid> wrote:
Hi,
I\'d like to find a wall clock, say kitchen clock, that instead of
syncing using the DCF radio station
(https://en.wikipedia.org/wiki/DCF77), uses WiFi (ie, internet) to sync.
I may have asked about this before.
Problem is, that here in Spain the DCF signal is so weak that clocks can
only sync during 01 to 05 AM, and often not even that, so that my clocks
can be in error for minutes of even hours, not getting corrected in weeks.
So I wonder if somebody makes some sort of ready made clock that uses
internet for syncing and which can be put on a wall. Or a kit.
Possibly it would run Android.
For example I found one or two bedside alarm clocks (Lenovo Smart Clock
Essential, with microphone switched off). But nothing for the wall. I
really do not want a smart clock with a microphone listening, I just
want a clock, perhaps with a thermometer or weather app.
A possibility would be dedicate an old tablet to this. Or an ebook
reader (some have apps)
I heard of people doing things like that with a Pi or whatever, but I
don\'t look forward to that, somehow, from scratch. A kit, may be.
Maybe a DCF repeater?
A cheap modern XO clock should be stable to a few PPM.
Replace the batteries and set it every 6 months.
Yeah, well, that\'s what I use, a plain analog clock, Xtall controlled.
Still, goes of more than a minute by the time I have to adjust
summer/winter time again. I want improvement
It may have a trimmer cap inside. And probably a 32768 Hz crystal. You
could potentially trim it.
All of the cheap xtal clock mechanisms I have ever seen have an adjuster
on the back. The odd one does it digitally calibrated at manufacture
against a reference second by tweaking the length of a second every now
and then to compensate up or down by a few ppm. Long term average over a
whole number of days can be made very good indeed this way.
It is interesting to know that the clock on my microwave oven (make Whirlpool),
that I think uses 50Hz mains, stays to within seconds over a long time,
Same for my Sony radio clock.
Few years ago there was a minutes long error due to 50Hz drift between power stations..
and it showed,
You realy do not normally need any more accuracy, but until the politiCsians
stop the summer / winter time crap you have have to adjust those things twice a year.
I am all for UTC everywhere worldwide.
Just a matter of getting used to locally, but much easier globally, and no clock change stress.
The sun should be high at noon. Like in the movie.
--
Father Brown\'s figure remained quite dark and still;
but in that instant he had lost his head. His head was
always most valuable when he had lost it.