Re: SBC hardware for stratum 0

[Ben Kamen]

On 3/22/24 6:33 AM, Jaap Winius via wrote:
> Hi folks,
>
> Years ago I wrote a page that describes how to use ntp together with
> gpsd and a Garmin GPS 18 LVC to create a statum 0 NTP server. I always
> had it attached directly to the serial port on my server machine, but
> hardware specs change and my new AMD motherboard no longer has one.
> Now my only choice is to use an RS-232 PCIe card instead, but sadly
> that's not possible as my design maxed out all of the available PCIe
> lanes.
>
> To continue using my old Garmin, an ideal solution would be to find a
> low-power, single-board computer that also has a UART 16550A (or
> better), an RS-232 interface and a male DE-09 serial port connector.
>
> Does anyone here know if anything like this actually exists and works
> reasonably well? Perhaps as a hat for a Raspberry Pi? Or, maybe if
> there's a better place to ask this question.
Supermicro makes lots of super low-power embedded micro-ITX boards with serial 
ports on them.

The older Atom boards are great -- but various mainstream versions of Linux are 
starting to deprecate the CPUs in them.
So things like RHEL 9+ won't run on them anymore. :(

 -Ben