[time-nuts] Re: Domestic time pulse transmission

[Busyspin]

Hi, John.

A co-worker of mine measured the 1pps from a grandfather clock by placing a Raspberry Pi nearby and using a microphone to “listen” for the sound the pendulum makes when it emits the “pulse”. He tweaked the code until it was spot on to the pendulum swing and then could route the pulse from there using TCP/IP from that Raspberry Pi to anywhere.

-Mark

> On Aug 4, 2023, at 9:54 AM, john.haine--- via time-nuts <time-nuts at lists.febo.com> wrote:
> 
> I'm wondering if the group wisdom could help me work out a good way to send
> a ~1pps pulse from a mechanical clock to a time monitoring system?  This is
> for a pendulum clock project where the clock is electronically controlled
> and I want to measure its timekeeping remotely to avoid having to build the
> time reference and logging R-Pi into the case.  I do not want to have to run
> a cable from the room where the clock will be to the place where the logging
> is done, so the options are radio or using the mains wiring (the clock will
> be mains powered with battery backup).  Obviousy there are options such as
> the cheap 433MHz transceivers that are available which I am investigating,
> but does anyone here have any experience of techniques that work (or, just
> as importantly, don't work!) please?
> 
> 
> 
> John.
> 
> 
> 
> 
> 
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