Req: GPS standalone

[raviraj]

i am looking for GPS receiver interfaced with any 89s51/AVR with LCD. project !!
please help in this regard .thanks for the same

[gem1144aaa]

Hi

what you asked for exactly i couldn't find
but i found something good for you

a pic based gps data logger

it gets location and pic saves it to an mmc card

you should be using the 8951 and you can connect to an lsd

so you can port the rest to 8951

for me sorry for not helping on porting to 8951 because i use pics only

see this link plz it has a schematics pcb and source code

http://www.gedanken.demon.co.uk/gps-sd-logger/

[an007]

http://www.olimex.com/dev/avr-gsm.html

[gamegurus]

See this, its a GPS with RS232 interface
http://www.sunrom.com/index.php?main_page=product_info&cPath=88&products_id=731

At the end of its datasheet are links to source code and project so you can parse its NMEA strings and show on LCD.
The most useful source code is the AVR Procon library, the C code can easily be ported to any 8051 C compiler.

[Alienbeing]

You can do a search on this forum http://www.mikroe.com/forum/ for GPS
and should come up with plenty examples. I submitted code I wrote in MPASM
for a PIC 16F877 in that forum I believe it was in their Mikroe Basic section.
It's really not too hard to write the code to parse the NEMA strings. What I
had problems with was the correct way to check if my LCD was busy before
I could send it more data. Also properly using the USART of the PIC in assembly.
That was my very first project in MPASM which turned out to work very good.
Not all GPS modules output the NEMA strings the same way. You need to keep that
in mind if you are to use other peoples NEMA parsing code. My code was written
to work with a older Jupiter GPS module that provided a 10Khz signal that was
syncronized with the GPS sats so I could phase lock a 10Mhz OCXO Frequency standard
to the sats. Also worked very good and I have a very accurate Frequency standard
to calibrate by frequency counter and  my RF signal generator.

Alienbeing