[time-nuts] Lowest Power NTP Server

[Didier Juges]

This article indicates: " Average precision was measured (by comparison to
known-good time sources) with 1 ms, or 0.001 seconds "

On Sun, Dec 1, 2019 at 2:01 PM David <david at mju.io> wrote:

> I'd think one of the ESP32's would be a fine choice. They have some good
> power management options to wake up periodically to do the work, making for
> even lower power consumption.
>
> Looks like someone has already written some code that could be adapted?
>
> https://github.com/DennisSc/PPS-ntp-server/blob/master/README.md
>
> -David
>
> -------- Original Message --------
> On Dec 1, 2019, 09:49, Bob kb8tq wrote:
>
> > Hi
> >
> > So something like one of the many ESP32 based boards?
> >
> > Of course when it comes to the “code from scratch” part there is the
> problem that I’m
> > pretty (most would say very …) lazy :) :) :)
> >
> > Bob
> >
> >> On Dec 1, 2019, at 12:29 PM, Poul-Henning Kamp <phk at phk.freebsd.dk>
> wrote:
> >>
> >> --------
> >>
> >> You can do better than RPi, since a NTP server basically
> >> only needs to understand two packets: IP/UDP at port 123
> >> and ARP packets.
> >>
> >> There are WiFi enabled microcontrollers that could be taught how
> >> to do that, but you'd have to write up your NTP daemon from scratch
> >> which is not hard when you do not have to do the "sync clock from
> >> remote servers" part.
> >>
> >>
> >> --
> >> Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
> >> phk at FreeBSD.ORG | TCP/IP since RFC 956
> >> FreeBSD committer | BSD since 4.3-tahoe
> >> Never attribute to malice what can adequately be explained by
> incompetence.
> >
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