Hi and thank you for your comment
I have been advised that Garmin is one brand
to look at. I would like to hear more of your experience with the
product.
>I have used standard COM unit for Delphi Pascal to read
the
>NMEA output from a Garmin gps,
There is a standard COM for VB. Do you send req
to the Garmin GPS unit for xy coordinate when you require it, or does it
send the data to you at every x time/distance interval?
>I display the data using a Delphi unit SDLChart it may
be
>vailable for VB.
I'm looking at an VB integrated mapping
apps with the running mapinfo instance plotting the aquired data
directly to provide rater with realtime feedback of defects and inventory
found.
>To make sure I had the NMEA version correct I used a
>terminal
program Xtalk to get a dump of the data that the gps was
>producing.
good idea
> currently use a Garmin 12xl this is an excellent development
unit. I am
>currently in the process of purchasing a pcmcia gps, the gps
agent has
>informed me that garmin make a gps unit that is built into a
receiver
>antenna...it simply has a COM lead (I don't know where the
power >comes from?).
>Let me know how you go, I can send you my
Delphi code for >formatting the NMEA output if you require.
From your experience does these low end GPS
unit provide coordinate data on request, or they stream data every
say 1/2 sec or 5m ?.
Do you need to create a conduit code? or is it a
basic command that you send through the serial which the GPS unit respond
to?. Because if there are no conduit code to create, then just stripping the
data makes life easier.
Iam looking at the Garmin etrex unit
Ta
