Getting started with GPS help needed

Benj

I could use some help getting started with GPS. I purchased the PMB-688 and would like basic starting info on how to connect it to my prop demo board. I have tried several of the OBEX examples, but can't really seem to get it going. Can anyone provide me a basic way to maybe output some data to VGA? I have tried the GPS to VGA OBEX example, but the monitor only shows labels (Latitude, etc) but no values. I don't know how to properly set the Rx and Tx pins that I have the GPS hooked to, or if that code will even work with the PMB-688.

Also, the PMB-688's red LED is flashing. I can't really find too much documentation on this unit, so I don't know of that is normal or an indication of something.

hover1

If the LED is flashing, you do not have a satellite lock. The object probably will not display data until you have aquired at least 3 satellites. Are you trying this indoors? You may never get a lock indoors. I have to hang mine outside, aboout a foot from the house.
Have a look at this thread:

http://forums.parallax.com/showthread.php?p=895795

Try the GPS-PST demo. No need for the VGA. It outputs on the Parallax Serial Terminal. I have tested it and it works great.

Jim

Post Edited (hover1) : 4/7/2010 4:20:39 PM GMT

Benj

Yes, unfortunately my development space is in the basement of a large building, so I will never get a signal here. It's final location will be in an area where it should be able to get a good signal. Thanks, I will check out your link.

Benj