[time-nuts] GPS for ntp

David J Taylor david-taylor at blueyonder.co.uk
Tue Oct 21 02:55:17 EDT 2014

What does everyone think of this GPS module for ntp use? According to the
specsheet, it uses a Ublox Neo-7N.


I'm thinking about using it for a Beaglebone ntp server. I know there was
some discussion about Beaglebones a while back. Has anyone gotten ntpd with
PPS and time stamping running on a Beaglebone yet (like on the Soekris
I have one Beaglebone White that I got cheap, so I have something to get
started with. Later, as I figure out things, I'll buy a few Beaglebone

Joe Gray


You might also consider the Raspberry Pi as an NTP server using PPS:


You can get the ublox 7Q in a ready-to-go no=-soldering board here:


I would reckon on sub-100 microsecond timing accuracy with the Raspberry Pi 
and kernel-mode PPS, but I've not done any comparison with the BB.

SatSignal Software - Quality software written to your requirements
Web: http://www.satsignal.eu
Email: david-taylor at blueyonder.co.uk 

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