[time-nuts] An embedded NTP server

[James Harrison]

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On 02/01/2013 19:25, Chris Albertson wrote:
> For an NTP server I'd go with something that can run an OS and the 
> NTP reverence implementation.  ARM (and others) can do that.
> 

This is exactly what I've done using the Raspberry Pi (Broadcom ARM
SOC running Linux) and a GPS module with the PPS kernel hook for Linux
GPIO. Still a beginner/aspiring time-nut so I'm not sure on accuracy
(PLL offset jitter suggests ~5-10ms worst-case but I've not looked
much into measuring it yet), but it's an improvement on internet NTP
at least.

(Brief writeup here:
http://www.talkunafraid.co.uk/2012/12/the-ntpi-accurate-time-with-a-raspberry-pi-and-venus638flpx/
- - be gentle, it's my first 'real' timing project!)

James
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