I have used the ublox modules in a project. http://www.u-blox.com/ Very e= asy to work with and much faster than Trimble. If you code in C you can "stea= l" some code from the procyon avrlib project ( http://hubbard.engr.scu.edu/embedded/avr/avrlib/). The price is about =8040-=8050 in low volumes. If need to do some work in C++ with NMEA I ca= n send you som easy to use code. Regards /Ake -----Ursprungligt meddelande----- Fr=E5n: pic microcontroller discussion list [mailto:PICLIST@MITVMA.MIT.EDU]F=F6r Mauricio Jancic Skickat: den 13 mars 2004 15:27 Till: PICLIST@MITVMA.MIT.EDU =C4mne: Re: [PIC]: Interfacing a GPS chip with a PIC? Argggghhhh!! Cant found it anywhere! How much does it cost a TRIMBLE LASSEN SQ module? Are there any other chipper options? Best regards Mauricio D. Jancic Janso Desarrollos - Microchip Consultant www.janso.com.ar info@janso.com.ar (54) - 11 - 4542 - 3519 Lugones 3238 "B" - C1430ECN Capital Federal Republica Argentina MSN: jansodesarrollos@hotmail.com >>-----Original Message----- >>From: pic microcontroller discussion list >>[mailto:PICLIST@MITVMA.MIT.EDU] On Behalf Of Rafael Fraga >>Sent: S=E1bado, 13 de Marzo de 2004 00:28 >>To: PICLIST@MITVMA.MIT.EDU >>Subject: Re: [PIC]: Interfacing a GPS chip with a PIC? >> >>I4m working with a Laipac module (Sirf chipset). Currently >>parsing messages and working proper init strings. It connects >>via two RS232 TTL levels, with two protocols available: a >>NMEA option and a Sirf propietary one. >>I have no objections, although datasheet is not the best. >>There is a demo program, to evaluate the performance with a >>PC. Quite useful. >>This module also has a battery backup, and and active antenna. >>The PIC side: a 18F252 >> >>Rafael Fraga >> >>----- Original Message ----- >>From: Bob Axtell >>To: >>Sent: Friday, March 12, 2004 11:08 PM >>Subject: Re: [PICLIST] [PIC]: Interfacing a GPS chip with a PIC? >> >> >>> Richard Zinn wrote: >>> >>> > Has anyone interfaced a GPS receiver chip, like the Motorola M12+ >>> > Oncore receiver >>(http://www.synergy-gps.com/M12_Oncore_Timing.html)? >>> > Or maybe >>a >>> > good website out there that describes how someone did it? Seems >>> > like >>I've >>> > seen posts about this on this PIClist, but I couldn't >>find anything >>useful >>> > in the archive. Maybe someone has an idea of another GPS >>receiver >>> > that would be good to try and use with a PIC. >>> >>> TRIMBLE actually pioneered this business for the military, >>and their >>> receivers are truly the very best. Motorola is a newbie to this biz. >>> >>> I'm interfacing the Trimble Lassen II which provides its data in TTL >>> RS232 (direct connection to PIC). The module is only 1.4"w >>x 3.2"l and >>> only 0.3" high, including the 8P header connector. Needs a >>3V battery >>> backup to get oriented after shutdown, but I use a Lithium Vanadium >>> Pentoxide rechargeable, so it never needs to be replaced. I'd never >>> use anything else. >>> >>> Checkout http://www.trimble.com/ . >>> >>> --Bob >>> -- >>> >>> Replies: NOTE-Script, EXE,BAT and COM >>> files will be rejected by server >>> -------------- >>> Bob Axtell >>> PIC Hardware & Firmware Dev >>> http://beam.to/baxtell >>> 1-520-219-2363 >>> >>> -- >>> http://www.piclist.com hint: PICList Posts must start with >>ONE topic: >>> [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other >>[BUY]:,[AD]: ->Ads >>> >>> >> >>-- >>http://www.piclist.com hint: PICList Posts must start with ONE topic: >>[PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads >> -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics