Re: GPS units
I need to test in a better way to be absolutely sure. And I will porttoggle quoted messageShow quoted text
forward my router so people can see for themselves.
My current setup provides GPS location to any device or software capable of
receiving location and time data from a GPSD system. APRSIS32 is capable of
NTP time for access from any device. Using the PPS in kernel mode rather
than user mode.
Also a samba install to allow monitoring from a windows pc.
And SNMP for remote monitoring as this is intended as a headless system.
Currently showing a bit of jitter on the GPS time as expected, but zero
jitter on the PPS.
I can create an image of the SD card. And torrent if people are interested.
Amateur Radio Callsign G6UIM
Torbay Freecycle Owner
APRSISCE/32 Beta tester and WIKI editor http://aprsisce.wikidot.com
From: aprsisce@... [mailto:aprsisce@...] On Behalf
Of Gary Sanders
Sent: 27 January 2014 17:11
Subject: Re: [aprsisce] GPS units
Don't know if you've seen this:
I did similar, and never could tame the thing down - the jitter was
really bad - to the point that it really wasn't usable.
I was driving the PPS with the PPS output from a Trimble Thunderbolt
GPSDO, so I know the PPS was good. I understand that the RasPi
occasionally strips out some Oscillator clock pulses for some reason,
and I suspect that may be the cause.
More later - have to go to an appointment.
On 1/27/2014 6:24 AM, Steve Daniels wrote:
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