On 2/9/2012 1:34 AM, David J Taylor wrote:
Hello all,
While researching potential GPS modules to experiment with for PPS
output, I discovered that SparkFun has quite a lot of modules, some
of which have PPS and some of which don't. You can't necessarily
tell from the product page. You have to check the data sheet. You
can go to their website and search for gps. This link should also
work. Just thought I'd pass it along.
http://www.sparkfun.com/search/results?term=gps&what=products
Here is one unit which does have PPS but it's not obvious from the
product page. There are others as well.
12 Channel Copernicus II GPS Receiver - from Trimble -
http://www.sparkfun.com/products/10922
Here are the parts of a pretty cool article referenced on the
SparkFun site regarding interfacing to these type of modules. About
70 pages of info not counting the data logger article.
http://www.kronosrobotics.com/Projects/GPS.shtml
http://www.kronosrobotics.com/Projects/GPS1.pdf
http://www.kronosrobotics.com/Projects/GPS2.pdf
http://www.kronosrobotics.com/Projects/GPS3.pdf
http://www.kronosrobotics.com/Projects/GPS4.pdf
http://www.kronosrobotics.com/Projects/GPSLogger.pdf
Sincerely,
Ron
Thanks for the posting. Yes, those look good, Ron, although for the
same money you can get a ready-made, full board with puck antenna
which works nicely with NTP:
http://www.sureelectronics.net/goods.php?id=99
http://www.satsignal.eu/ntp/Sure-GPS.htm
Cheers,
David
Hi David,
I'm certainly considering that board. It looks very attractive. I'm
going to have to read over the documentation page you've put together.
It looks very comprehensive.
Chris Albertson said to get a unit which had:
1) - a stationary mode, or possibly only a stationary mode
2) - self survey
3) - PPS
4) - serial output
5) - NTPD driver support
Now I know the Sure board has 3) and 4). And I presume you can do 5)
through the generic NMEA driver. However, do you know if it can do 1)
and 2)? Actually, does it have native PPS, or are you adding it by
using the LED output?
Sincerely,
Ron
--
(PS - If you email me and don't get a quick response, don't be concerned.
I get about 300 emails per day from alternate energy mailing lists and
such. I don't always see new messages very quickly. If you need a
reply and have not heard from me in 1 - 2 weeks, send your message again.)
Ron Frazier
timekeepingdude AT c3energy.com
_______________________________________________
questions mailing list
[email protected]
http://lists.ntp.org/listinfo/questions
