[Robotgroup] GPS unit (was: Restarting in mid-script..)

[Nick Pietraniec]

I did a project which interfaced a Garmin GPS with a Motorola HC11
microcontroller through an RS232 connection and drew a map as you walked
on an etch-a-sketch.  It wasn't very accurate, but the code was small
since I wrote it in assembly.  Did I miss the email?  What are you guys
working on?

On Tue, 2006-12-12 at 13:30 -0600, Eric Lundquist wrote:
> It's still too early to tell.  So far, I have a bunch of different
> microcontrollers and electronics (AVR ATMEGA162, Pololu SSC, RS232
> converter, H Bridges, odometry circuit, +5V power regulator, and the
> GPS) spread out on my kichen table with the robot under the table up
> on blocks and the whole thing barely glued together with a mass of
> "don't breath on it too hard" cabling.  Since I haven't moved the
> whole works outside yet, I can't get real GPS readings.  Though, I can
> state with confidence that the Parallax GPS reliably sends continuous
> 0's from my kitchen table. :)  Seriously, I have the code written for
> the AVR to process the GPS NMEA input but it is pretty large due to
> the inclusion of the C floating point libraries.  I may end having to
> rewritie it to get the code size down.
> 
> So far, I have been concentrating on the basic drive mechanisms.  Once
> I have that working a little better and all mounted onto the robot
> base, I'll be able to then work on integrating real-time GPS data.
> 
> - Eric
> 
> On 12/12/06, Vern Graner <vern at txis.com> wrote:
> > Eric Lundquist wrote:
> > > Vern has generously loaned me a Parallax GPS unit that has a TTL
> > > RS232 interface that I am experimenting with now.
> >
> > So.. any luck? how well does it work? :)
> >
> > Vern
> >
> > --
> > Vern Graner CNE/CNA/SSE    | "If the network is down, then you're
> > Senior Systems Engineer    | obviously incompetent so why are we
> > Texas Information Services | paying you? Of course, if the network
> > http://www.txis.com        | is up, then we obviously don't need
> > Austin Office 512 328-8947 | you, so why are we paying you?" (c)VLG
> > _______________________________________________
> > Robotgroup mailing list
> > Robotgroup at puremagic.com
> > http://lists.puremagic.com/cgi-bin/mailman/listinfo/robotgroup
> >
> _______________________________________________
> Robotgroup mailing list
> Robotgroup at puremagic.com
> http://lists.puremagic.com/cgi-bin/mailman/listinfo/robotgroup