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On 8/8/2016 11:25 PM, Roger Oberholtzer
wrote:
From: Gary E. Miller [address@hidden]
Are you looking for a GPS mouse, or is a bare GPS board OK? Internal or External antenna?
A mouse. External antenna. It will be used in a vehicle. We want to set time, and do locations (to the extent such receivers do them).
I would really go with the Garmin GPS 16x-HVS, or the 19x-HVS. You
can power them off 12 volts, they're rugged, magnetic mounts are
available, and they work well with NTP and GPSD. I just built a
16x-HVS interface board for a raspberry pi, and it's working really
well. I used a MAX232 breakout board to downshift the RS-232 to 3.3v
TTL. Attached to the pi, the average for the clock offset was under
5uS. Over-thinking the accuracy of the PPS pulse is going to be
pretty pointless because your temperature will be all over the
place, and that's going to dramatically affect your ability to keep
accurate time.
https://buy.garmin.com/en-US/US/oem/cOEM-p1.html
Roger Oberholtzer
RST Systems
Office: +46 (0)10-615 6020
Mobile: +46 (0)70-815 1696
address@hidden
________________________________________
Ramböll Sverige AB
Krukmakargatan 21
P.O. Box 17009
SE-104 62 Stockholm, Sweden
www.rambollrst.se
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