[time-nuts] Re: Crazy Clock

[Bob Camp]

Hi

Since I also have an empire of WWVB based clocks running around the house, generating 
a “synthetic” WWVB seems risky. There will be several “Crazy Clocks” so distribution of the
60 KHz would be a bit exciting. 

Faking things with a DCF-77 clock might be more practical since I have no current plans
for trying to get “real” time that way. 

Once you get an RPi into the mix, an “offset” NTP server and NTP based clocks become
a viable ( and easy to get ) option. 

Bob

> On Dec 18, 2022, at 10:51 AM, David Taylor via time-nuts <time-nuts at lists.febo.com> wrote:
> 
> Top of the head idea:
> 
> - get a cheap "Atomic Time" clock with the display format you want.
> 
> - GPS receiver with Raspberry Pi/Pico/Arduino or similar to get the time and
> GPS offset (use GPSD?).
> 
> - extract the GPS time offset to create the time /you/ want.
> 
> - code a simple emulation of WWVB/MSF/DCF-77 or whatever and make the Pi
> generate a simple 60 kHz signal with the right modulation and feed it to (near)
> the cheap "Atomic Time" clock.
> 
> RPi TX software can make the RPi into a transmitter:
>   https://github.com/F5OEO/rpitx
> 
> [Thanks to Tom for discussions about this topic]
> 
> David
> -- 
> SatSignal Software - Quality software for you
> Web: https://www.satsignal.eu
> Email: david-taylor at blueyonder.co.uk
> Twitter: @gm8arv
> _______________________________________________
> time-nuts mailing list -- time-nuts at lists.febo.com
> To unsubscribe send an email to time-nuts-leave at lists.febo.com