On 31/03/2025 in message <vsdk4l$3qqok$1@dont-email.me> wasbit wrote:and the latter one clock bought 20 years ago when they had decent receivers and aerials.
On 30/03/2025 13:19, Jeff Gaines wrote:
I see that WiFi clocks for home use are becoming available at last. My "atomic" clocks fall in to two categories - "only works in the right place at the right angle" and "works a dream". In my experience the former are the cheap Chinese clocks
I have found a couple of WiFi clocks that might suit. One from Ali Express who will only let me sign up using Google or Facebook, the other from Amazon which is 5 times the price plus £8 postage.
Does anybody here use one and willing to make a recommendation?
In the spirit of the group I could use an old tablet set to always on and permanently plugged into a charger, not sure how long it might last though.
What do you mean by wi-fi clock?
We have 4 radio controlled clocks ie in theory they should all show the correct time & update themselves without user intervention.
250mm Ø with the face being 220mm Ø so large & clear enough to be read at a distance. The garden one, under the carport, does go through AA batteries faster than the others probably 1 every 6 to 9 months.
My "Atomic" clocks are somewhat fussy, see my opening comments!
On Mon, 3/31/2025 6:00 AM, Jeff Gaines wrote:and the latter one clock bought 20 years ago when they had decent receivers and aerials.
On 31/03/2025 in message <vsdk4l$3qqok$1@dont-email.me> wasbit wrote:
On 30/03/2025 13:19, Jeff Gaines wrote:
I see that WiFi clocks for home use are becoming available at last. My "atomic" clocks fall in to two categories - "only works in the right place at the right angle" and "works a dream". In my experience the former are the cheap Chinese clocks
I have found a couple of WiFi clocks that might suit. One from Ali Express who will only let me sign up using Google or Facebook, the other from Amazon which is 5 times the price plus £8 postage.
Does anybody here use one and willing to make a recommendation?
In the spirit of the group I could use an old tablet set to always on and permanently plugged into a charger, not sure how long it might last though.
What do you mean by wi-fi clock?
We have 4 radio controlled clocks ie in theory they should all show the correct time & update themselves without user intervention.
250mm Ø with the face being 220mm Ø so large & clear enough to be read at a distance. The garden one, under the carport, does go through AA batteries faster than the others probably 1 every 6 to 9 months.
My "Atomic" clocks are somewhat fussy, see my opening comments!
This one is 100uV at up to 1000km.
That should be enough to do it, and the transmitting antenna is omnidirectional. That is 60KHz (a little
less than double the quartz crystal in your digital watch or ATX computer RTC).
https://en.wikipedia.org/wiki/Time_from_NPL_%28MSF%29#The_'MSF_signal'_and_the_'Rugby_clock'
The one in Germany is 77KHz.
The design inside a clock, consists of a piece of Russian Ferrite
(other suppliers do not make that particular flavour of ferrite rod).
There is a tuned circuit, an LC fitted to the antenna. And that's
enough of an antenna for a 100uV signal. The integrated circuit
fitted in the clock, has to acquire that 100uV signal.
The scheme in North America is similar, except the signal strength
does not guarantee good reception at all times of the day. A Radio
clock in North America should be able to achieve a time fix once a day (perhaps in the evening hours). Other times of the day, the signal
might be a little weak. Propagation may also differ between
summer and winter. The UK scheme is good all day.
If you don't have the piece of ferrite, you can use an ordinary "aircore coil of wire",
but the amount of wire required, is about the same size as a foot diameter wall clock with a big face. Not exactly convenient. (There is a UK web site which contained pictures of a working wire coil.) But if for some
reason you lacked the piece of Russian ferrite, it's still possible
to wind your own coil antenna (and fit it with a capacitor to tune for
max signal at the intended frequency). I don't know how the Q of those
two schemes compare (the sharpness of the frequency response). That
ferrite makes a big difference.
Really, your atomic clock should have worked. You are not in North America where our signal does not meet the minimum at all times of the day. The LF signal penetrates buildings no problem at all. It is not a 2.4GHz or 5GHz Wifi signal, it is only 60KHz and a relatively low frequency for RF. You would
think that harmonics of line frequency would potentially interfere.
Paul
If you have wifi the 60kHZ clock is simply irrelevant.
Boot up a PI ZERO W, and it will acquire 'internet time' and 'know'
about time zones
Couple it up to a 5 digit display of some kind - or indeed some stepper motors..
..and you have a better than a few ms clock.
On Mon, 3/31/2025 6:00 AM, Jeff Gaines wrote:
On 31/03/2025 in message <vsdk4l$3qqok$1@dont-email.me> wasbit wrote:Chinese clocks and the latter one clock bought 20 years ago when they had >decent receivers and aerials.
On 30/03/2025 13:19, Jeff Gaines wrote:
I see that WiFi clocks for home use are becoming available at last. My >"atomic" clocks fall in to two categories - "only works in the right place at >the right angle" and "works a dream". In my experience the former are the cheap
who will only let me sign up using Google or Facebook, the other from Amazon >which is 5 times the price plus 8 postage.
I have found a couple of WiFi clocks that might suit. One from Ali Express
than the others probably 1 every 6 to 9 months.
Does anybody here use one and willing to make a recommendation?
In the spirit of the group I could use an old tablet set to always on and >permanently plugged into a charger, not sure how long it might last though. >>>>
What do you mean by wi-fi clock?
We have 4 radio controlled clocks ie in theory they should all show the >correct time & update themselves without user intervention.
250mm with the face being 220mm so large & clear enough to be read at a >distance. The garden one, under the carport, does go through AA batteries faster
My "Atomic" clocks are somewhat fussy, see my opening comments!
This one is 100uV at up to 1000km.
That should be enough to do it, and the transmitting antenna is omnidirectional.
That is 60KHz (a little
less than double the quartz crystal in your digital watch or ATX computer RTC).
https://en.wikipedia.org/wiki/Time_from_NPL_%28MSF%29#The_'MSF_signal'_and_th
e_'Rugby_clock'
The one in Germany is 77KHz.
The design inside a clock, consists of a piece of Russian Ferrite
(other suppliers do not make that particular flavour of ferrite rod).
There is a tuned circuit, an LC fitted to the antenna. And that's
enough of an antenna for a 100uV signal. The integrated circuit
fitted in the clock, has to acquire that 100uV signal.
The scheme in North America is similar, except the signal strength
does not guarantee good reception at all times of the day. A Radio
clock in North America should be able to achieve a time fix once a day >(perhaps in the evening hours). Other times of the day, the signal
might be a little weak. Propagation may also differ between
summer and winter. The UK scheme is good all day.
If you don't have the piece of ferrite, you can use an ordinary "aircore coil of
wire",
but the amount of wire required, is about the same size as a foot diameter >wall clock with a big face. Not exactly convenient. (There is a UK web site >which contained pictures of a working wire coil.) But if for some
reason you lacked the piece of Russian ferrite, it's still possible
to wind your own coil antenna (and fit it with a capacitor to tune for
max signal at the intended frequency). I don't know how the Q of those
two schemes compare (the sharpness of the frequency response). That
ferrite makes a big difference.
Really, your atomic clock should have worked. You are not in North America >where our signal does not meet the minimum at all times of the day. The LF >signal penetrates buildings no problem at all. It is not a 2.4GHz or 5GHz >Wifi signal, it is only 60KHz and a relatively low frequency for RF. You would >think that harmonics of line frequency would potentially interfere.
Paul
If you want a wall clock you have to provide a power supply to keepSurprised MK still sell these, only one I remember seeing was above the
it powered all the time, which means running a wire.
Theo wrote:
If you want a wall clock you have to provide a power supply to keepSurprised MK still sell these, only one I remember seeing was above the mantel in my parents' 1968 house.
it powered all the time, which means running a wire.
<https://tlc-direct.co.uk/Products/MK0995.html>
Dad made an octagonal clock from a sheet of plywood with matchsticks as
roman numerals.
Andy Burns <usenet@andyburns.uk> wrote:
Theo wrote:
If you want a wall clock you have to provide a power supply to keepSurprised MK still sell these, only one I remember seeing was above the >>mantel in my parents' 1968 house.
it powered all the time, which means running a wire.
<https://tlc-direct.co.uk/Products/MK0995.html>
Dad made an octagonal clock from a sheet of plywood with matchsticks as >>roman numerals.
Those would actually be quite neat for wall mounted things that need power, >like TVs and smart widgets. The downside is they tend to be quite
ephemeral
and not worth chiselling up the wall for. But maybe in these days of dry >lining everything it wouldn't be implausible to fish a wire behind the dot >and dab.
Theo
On 06/04/2025 in message <auh*Dsj-z@news.chiark.greenend.org.uk> Theo
wrote:
Andy Burns <usenet@andyburns.uk> wrote:
Theo wrote:
If you want a wall clock you have to provide a power supply to keepSurprised MK still sell these, only one I remember seeing was above the
it powered all the time, which means running a wire.
mantel in my parents' 1968 house.
<https://tlc-direct.co.uk/Products/MK0995.html>
Dad made an octagonal clock from a sheet of plywood with matchsticks as
roman numerals.
Those would actually be quite neat for wall mounted things that need
power,
like TVs and smart widgets. The downside is they tend to be quite
ephemeral
and not worth chiselling up the wall for. But maybe in these days of dry >> lining everything it wouldn't be implausible to fish a wire behind the
dot
and dab.
Theo
I have a 12" Acctim radio controlled wall clock in the kitchen. Runs on
1 x AA battery, changed annually, worked perfectly form day 1.
My Ali Express WiFi clock arrived at lunchtime:
https://www.aliexpress.com/item/1005007538965861.html
I hadn't expected it would be a kit! 4 bits of transparent plastic, the actual working bit and some stand offs and screws. I think I know why
the Chinese are so clever, there were no instructions and I expect it
would have taken a Chinese toddler 5 minutes but I took half an hour.
Anyway, plug if in (you need your own USB lead and power supply) and it sprang into life. I managed to follow the instruction on the web page to connect to its built in server to give it my WiFi details (presumably
now stored in the Chinese equivalent of the Kremlin) whereupon it put
itself to the correct time, presumably in China - the minutes were
correct but the hour miles out.
I had a devil of a job setting the time zone. It was set to 0 but
refused to change. Long story short, change it to something else then
back to 0 and you're in business.
I paid around £10 (it's shown at a higher price now) and if it continues
to work that is a bargain in my book.
On 07/04/2025 17:29, Jeff Gaines wrote:
Why?
My Ali Express WiFi clock arrived at lunchtime:
https://www.aliexpress.com/item/1005007538965861.html
I hadn't expected it would be a kit! 4 bits of transparent plastic, the >>actual working bit and some stand offs and screws. I think I know why the >>Chinese are so clever, there were no instructions and I expect it would >>have taken a Chinese toddler 5 minutes but I took half an hour.
Anyway, plug if in (you need your own USB lead and power supply) and it >>sprang into life. I managed to follow the instruction on the web page to >>connect to its built in server to give it my WiFi details (presumably now >>stored in the Chinese equivalent of the Kremlin) whereupon it put itself >>to the correct time, presumably in China - the minutes were correct but >>the hour miles out.
I had a devil of a job setting the time zone. It was set to 0 but refused >>to change. Long story short, change it to something else then back to 0 >>and you're in business.
I paid around £10 (it's shown at a higher price now) and if it continues >>to work that is a bargain in my book.
My Ali Express WiFi clock arrived at lunchtime:
https://www.aliexpress.com/item/1005007538965861.html
I hadn't expected it would be a kit! 4 bits of transparent plastic, the actual working bit and some stand offs and screws. I think I know why the Chinese are so clever, there were no instructions and I expect it would
have taken a Chinese toddler 5 minutes but I took half an hour.
Anyway, plug if in (you need your own USB lead and power supply) and it sprang into life. I managed to follow the instruction on the web page to connect to its built in server to give it my WiFi details (presumably now stored in the Chinese equivalent of the Kremlin) whereupon it put itself
to the correct time, presumably in China - the minutes were correct but
the hour miles out.
I had a devil of a job setting the time zone. It was set to 0 but refused
to change. Long story short, change it to something else then back to 0
and you're in business.
I paid around £10 (it's shown at a higher price now) and if it continues
to work that is a bargain in my book.
Jeff Gaines <jgnewsid@outlook.com> wrote:
My Ali Express WiFi clock arrived at lunchtime:
https://www.aliexpress.com/item/1005007538965861.html
I hadn't expected it would be a kit! 4 bits of transparent plastic, the >>actual working bit and some stand offs and screws. I think I know why the >>Chinese are so clever, there were no instructions and I expect it would >>have taken a Chinese toddler 5 minutes but I took half an hour.
Anyway, plug if in (you need your own USB lead and power supply) and it >>sprang into life. I managed to follow the instruction on the web page to >>connect to its built in server to give it my WiFi details (presumably now >>stored in the Chinese equivalent of the Kremlin) whereupon it put itself
to the correct time, presumably in China - the minutes were correct but
the hour miles out.
I had a devil of a job setting the time zone. It was set to 0 but refused >>to change. Long story short, change it to something else then back to 0 >>and you're in business.
I paid around £10 (it's shown at a higher price now) and if it continues >>to work that is a bargain in my book.
So that's an ESP32, a display, an RTC chip with button cell for
timekeeping,
but no battery. ie it needs USB power at all times, they haven't bothered >making it low power to run off its own battery. Fine if you want a desk >clock, I suppose the LED display is going to chew through power anyway so
not much point battery powering it.
Theo
On 07/04/2025 in message <vt0vgq$3cf9a$2@paganini.bofh.team> Jim the
Geordie wrote:
On 07/04/2025 17:29, Jeff Gaines wrote:
Why?
My Ali Express WiFi clock arrived at lunchtime:
https://www.aliexpress.com/item/1005007538965861.html
I hadn't expected it would be a kit! 4 bits of transparent plastic,
the actual working bit and some stand offs and screws. I think I know
why the Chinese are so clever, there were no instructions and I
expect it would have taken a Chinese toddler 5 minutes but I took
half an hour.
Anyway, plug if in (you need your own USB lead and power supply) and
it sprang into life. I managed to follow the instruction on the web
page to connect to its built in server to give it my WiFi details
(presumably now stored in the Chinese equivalent of the Kremlin)
whereupon it put itself to the correct time, presumably in China -
the minutes were correct but the hour miles out.
I had a devil of a job setting the time zone. It was set to 0 but
refused to change. Long story short, change it to something else
then back to 0 and you're in business.
I paid around £10 (it's shown at a higher price now) and if it
continues to work that is a bargain in my book.
Why what?
I paid around £10 (it's shown at a higher price now) and if it continues >>>>to work that is a bargain in my book.Why?
Why what?
Why this clock when every device in the home and pocket has a clock in it?
My Ali Express WiFi clock arrived at lunchtime:
https://www.aliexpress.com/item/1005007538965861.html
I hadn't expected it would be a kit! 4 bits of transparent plastic, the actual working bit and some stand offs and screws. I think I know why
the Chinese are so clever, there were no instructions and I expect it
would have taken a Chinese toddler 5 minutes but I took half an hour.
Anyway, plug if in (you need your own USB lead and power supply) and it sprang into life. I managed to follow the instruction on the web page to connect to its built in server to give it my WiFi details (presumably
now stored in the Chinese equivalent of the Kremlin) whereupon it put
itself to the correct time, presumably in China - the minutes were
correct but the hour miles out.
I had a devil of a job setting the time zone. It was set to 0 but
refused to change. Long story short, change it to something else then
back to 0 and you're in business.
I paid around £10 (it's shown at a higher price now) and if it continues
to work that is a bargain in my book.
I paid around £10 (it's shown at a higher price now) and if it continues >>to work that is a bargain in my book.
Yeh, but they are £7.99 for an 8" dial in Lidl's middle aisle.
On 08/04/2025 in message <vt3aji$2cnem$2@dont-email.me> wasbit wrote:
I paid around £10 (it's shown at a higher price now) and if it
continues to work that is a bargain in my book.
Yeh, but they are £7.99 for an 8" dial in Lidl's middle aisle.
Usenet never changes does it -)
On 08/04/2025 15:24, Jeff Gaines wrote:
On 08/04/2025 in message <vt3aji$2cnem$2@dont-email.me> wasbit wrote:Cost me a fiver in fuel to get to lidl and find they don't have one
I paid around £10 (it's shown at a higher price now) and if it continues >>>>to work that is a bargain in my book.
Yeh, but they are £7.99 for an 8" dial in Lidl's middle aisle.
Usenet never changes does it -)
On 08/04/2025 in message <vt3q92$2qsta$1@dont-email.me> The Natural Philosopher wrote:
On 08/04/2025 15:24, Jeff Gaines wrote:
On 08/04/2025 in message <vt3aji$2cnem$2@dont-email.me> wasbit wrote:Cost me a fiver in fuel to get to lidl and find they don't have one
I paid around £10 (it's shown at a higher price now) and if it
continues to work that is a bargain in my book.
Yeh, but they are £7.99 for an 8" dial in Lidl's middle aisle.
Usenet never changes does it -)
And I don't want an analogue clock :-)
On 07/04/2025 17:29, Jeff Gaines wrote:
My Ali Express WiFi clock arrived at lunchtime:
https://www.aliexpress.com/item/1005007538965861.html
I hadn't expected it would be a kit! 4 bits of transparent plastic,
the actual working bit and some stand offs and screws. I think I know
why the Chinese are so clever, there were no instructions and I expect
it would have taken a Chinese toddler 5 minutes but I took half an hour.
Anyway, plug if in (you need your own USB lead and power supply) and
it sprang into life. I managed to follow the instruction on the web
page to connect to its built in server to give it my WiFi details
(presumably now stored in the Chinese equivalent of the Kremlin)
whereupon it put itself to the correct time, presumably in China - the
minutes were correct but the hour miles out.
I had a devil of a job setting the time zone. It was set to 0 but
refused to change. Long story short, change it to something else then
back to 0 and you're in business.
I paid around £10 (it's shown at a higher price now) and if it
continues to work that is a bargain in my book.
Yeh, but they are £7.99 for an 8" dial in Lidl's middle aisle.
Do the current Lidl radio-controlled clocks (being German) sync withI paid around £10 (it's shown at a higher price now) and if it continues >>>to work that is a bargain in my book.
Yeh, but they are £7.99 for an 8" dial in Lidl's middle aisle.
Athorn? Older ones only synced with Mainflingen and struggled to get
signal in some parts of the UK.
On 09/04/2025 in message <3D6dnYyNacoTxmv6nZ2dnZfqnPudnZ2d@brightview.co.uk> Reentrant wrote:other side.
Do the current Lidl radio-controlled clocks (being German) sync with Athorn? Older ones only synced with Mainflingen and struggled to get signal in some parts of the UK.I paid around £10 (it's shown at a higher price now) and if it continues to work that is a bargain in my book.
Yeh, but they are £7.99 for an 8" dial in Lidl's middle aisle.
The Chinese one I have is WiFi not radio controlled which is why I was so pleased to find it - and at a good price!
When I lived in Pewsey none of my radio controlled clocks could pick up a signal (army territory, lots of conspiracy theories as to why!). It is better here but I still have a situation where if they are one side of the bed they will work but not the
On Wed, 4/9/2025 8:43 AM, Jeff Gaines wrote:
On 09/04/2025 in message >><3D6dnYyNacoTxmv6nZ2dnZfqnPudnZ2d@brightview.co.uk> Reentrant wrote:
Do the current Lidl radio-controlled clocks (being German) sync with >>>Athorn? Older ones only synced with Mainflingen and struggled to get >>>signal in some parts of the UK.I paid around £10 (it's shown at a higher price now) and if it >>>>>continues to work that is a bargain in my book.
Yeh, but they are £7.99 for an 8" dial in Lidl's middle aisle.
The Chinese one I have is WiFi not radio controlled which is why I was so >>pleased to find it - and at a good price!
When I lived in Pewsey none of my radio controlled clocks could pick up a >>signal (army territory, lots of conspiracy theories as to why!). It is >>better here but I still have a situation where if they are one side of the >>bed they will work but not the other side.
The implication here, is with the radio clock, you
can extend the LC antenna assembly, away from the
unit, for antenna positioning.
https://www.galsys.co.uk/time-reference/gps-and-ntp/ntp-server-reference-source.html
Paul
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