Connecting the Javelin to the Parallax GPS
jgunderson
Posts: 6
Hi,
We're trying to install the Parallax GPS into our outdoor mobile robot, and process the data with a Javelin chip.
Unfortunately we can't seem to get the two to talk. Has anybody achieved this feat?
We set up a uart object on the javelin side, with the correct baud rate, etc.
We wired it up to the GPS data pin, and sent off the correct command string (in this case "!GPS0x00" to get version info.)
The initial hardware connection would just lock up waiting on a
We added a pulldown resistor on the GPS side, and then we would get "0 0 68 34 0 0 0 0 0 0 0 ..." back from the GPS.
However, if we tried any of the other command strings, we would get nothing but "0 0 0 0 0 0 0...."
So, does anyone have any suggestions?
Jim
We're trying to install the Parallax GPS into our outdoor mobile robot, and process the data with a Javelin chip.
Unfortunately we can't seem to get the two to talk. Has anybody achieved this feat?
We set up a uart object on the javelin side, with the correct baud rate, etc.
We wired it up to the GPS data pin, and sent off the correct command string (in this case "!GPS0x00" to get version info.)
The initial hardware connection would just lock up waiting on a
while (!GPS.byteAvailable()) ;
We added a pulldown resistor on the GPS side, and then we would get "0 0 68 34 0 0 0 0 0 0 0 ..." back from the GPS.
However, if we tried any of the other command strings, we would get nothing but "0 0 0 0 0 0 0...."
So, does anyone have any suggestions?
Jim
Comments
It is for product #28146
http://www.parallax.com/detail.asp?product_id=28146
Also see this thread:
http://forums.parallax.com/showthread.php?p=620164
regards peter
Post Edited (Peter Verkaik) : 7/12/2007 1:03:20 AM GMT
I won't be able to get it running until Tuesday, But I'm looking forward to chasing the robot through City Park.
Thanks again!
Jim