[ntp:questions] Do I have a lock to my NMEA GPS?

David Taylor david-taylor at blueyonder.co.uk.invalid
Fri Nov 9 19:10:44 UTC 2012


On 09/11/2012 18:05, Ralph Aichinger wrote:
[]
> Thanks a lot, I just wanted to be sure. The eTrex sends lots of useless
> crap on the NMEA output, the serial converter is probably a bad idea
> for more than testing, and I am stress testing my system (Raspberry Pi)
> at the moment by playing MP3s and sending stuff over another serial
> adapter. So the high jitter is to be expected.
>
> Now I just have to decide between the Adafruit GPS and the Sure
> Electronics board. Probably the shipping costs will be most
> relevant.
>
> /ralph -- also thanks to Chuck who mailed me!

My new Raspberry Pi system is using a u-blox MEO-6M module from China, 
GPS/PPS, and consumes about 4W (5V 0.8A) in total.  Direct serial 
connection as I also wanted to avoid the USB.

   http://www.satsignal.eu/ntp/Raspberry-Pi-NTP.html#serial
-- 
Cheers,
David
Web: http://www.satsignal.eu



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