I have this vague itch to build a series of clocks as a hobby, but *without* a modern clock for reference. Eg build a mechanical clock, but use an hour glass to cal9brate first run. Bootstrap time all the way to atomic.
I think you can buy clocks that self-set to NIST signals. NTP clock shouldn’t be hard. RPi running a small program?
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Yes that is exactly what I did. I build a wood veneer clock with a color LED screen behind it
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Nice. Where do you get NTP signals? Can any network device provide one, like a home WiFi router, or do you have to ping a designated timeserver like dns?
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