Andreas has a good solution for this on youtube. Search for Andreas Spiess remote controller for clocks.
Take an existing battery wall clock. Replace the mechanism with an aliexpress DCF77 version.
Replace both the hands at 12 oclock.
DCF77 doesn't reach me, so, plug the code Andreas links to into an ESP32 board, which polls a ntp server and knows your local time zone.
The ESP32 board also has an DCF77 resonant coil and cap also from aliexpress connected to an IO pin.
The ESP board plugs to a USB wall wart and needs to be within about of a foot of the clock.
I have built a couple - both clocks adjust for daylight saving / summertime by themselves. The AA batteries last about a year, not quite as good as original.
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Andreas has a good solution for this on youtube. Search for Andreas Spiess remote controller for clocks.
Take an existing battery wall clock. Replace the mechanism with an aliexpress DCF77 version.
Replace both the hands at 12 oclock.
DCF77 doesn't reach me, so, plug the code Andreas links to into an ESP32 board, which polls a ntp server and knows your local time zone.
The ESP32 board also has an DCF77 resonant coil and cap also from aliexpress connected to an IO pin.
The ESP board plugs to a USB wall wart and needs to be within about of a foot of the clock.
I have built a couple - both clocks adjust for daylight saving / summertime by themselves. The AA batteries last about a year, not quite as good as original.
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>timeless as a clock
Generative AI seems to have no idea how ironic this phrase is. 🤣
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You might find my similar project interesting. https://bodgesoc.blogspot.com/2015/09/clock.html
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