CCS C Software and Maintenance Offers
FAQFAQ   FAQForum Help   FAQOfficial CCS Support   SearchSearch  RegisterRegister 

ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

CCS does not monitor this forum on a regular basis.

Please do not post bug reports on this forum. Send them to support@ccsinfo.com

[OT] GPS modules / OEM boards -- where to buy?

 
Post new topic   Reply to topic    CCS Forum Index -> General CCS C Discussion
View previous topic :: View next topic  
Author Message
jds-pic



Joined: 17 Sep 2003
Posts: 205

View user's profile Send private message

[OT] GPS modules / OEM boards -- where to buy?
PostPosted: Mon Apr 25, 2005 11:42 am     Reply with quote

guys,
i've recently started a PIC-based APRS project and would like to purchase a small Motorola Oncore or similar GPS engine w/ NMEA output (4800/8/N/1). i'm not looking for a "personal GPS" a la the Garmin Etrex; instead, i need a board level GPS product, preferably with an on-board patch antenna. any leads?

thanks,
jds-pic

ps:
APRS =
http://web.usna.navy.mil/~bruninga/aprs.html
http://www.aprs.net/
http://www.findu.com/
Ttelmah
Guest







PostPosted: Tue Apr 26, 2005 3:17 am     Reply with quote

When I needed to do this on a product, I ended up building the GPS 'on board', using a chipset. However I have seen modules from companies like 'NavSync', that might do what you want. Garmin also offer 'board level' products to the OEM, which might well meet your requirements. 'MightyGPS', market a number of OEM modules (look for the 'UV40'). TDC, do the Leadtek, and Navman modules. Beware though, that with an internal GPS, your casing, and placement need to be very carefully designed if you are to get good signal coverage, and noise from the processor etc., can degrade the performance. It is often easier to use an external module with flying leads to the rest of the circuit, to get good performance.

Best Wishes
Guest








PostPosted: Tue Apr 26, 2005 5:53 am     Reply with quote

Hi,

I have had good luck with a module from Laipac. Chipset is from SiRF.

Regards
Gizz



Joined: 15 Jun 2004
Posts: 21
Location: Nottingham UK

View user's profile Send private message

PostPosted: Tue Apr 26, 2005 6:05 am     Reply with quote

I have used the Trimble Lassen SQ with good effect
libor



Joined: 14 Dec 2004
Posts: 288
Location: Hungary

View user's profile Send private message

PostPosted: Tue Apr 26, 2005 6:08 am     Reply with quote

I have successfully used the products of u-blox with PICs using their modules soldered on my PCB. They have chipset, modules, and complete boards also, so you can decide which level of integration you want to begin with. They have recently added super-sensitive modules and also dead-reckoning solutions to be used with gyros when no GPS coverage available to their product line, though I only used their TIM-LC low cost modules so far.
jds-pic



Joined: 17 Sep 2003
Posts: 205

View user's profile Send private message

PostPosted: Tue Apr 26, 2005 9:07 am     Reply with quote

folks,
thanks for all of the input above.

i found a source of OEM modules and development boards, see
http://www.sparkfun.com/shop/index.php?shop=1&cart=233269&cat=1&
specifically their GPS page
http://www.sparkfun.com/shop/index.php?shop=1&cart=233269&cat=63&

ps
these guys also seem to have a lot of PIC development platforms/programmers, etc.

jds-pic
mcafzap



Joined: 07 Sep 2003
Posts: 46
Location: Manchester, UK

View user's profile Send private message

PostPosted: Tue Apr 26, 2005 3:39 pm     Reply with quote

FYI there is also www.falcom.de they also have GPS with GSM/GPRS engines too.

Something to watch if you're after the highest possible accuracy is that the first positions found (from a cold start) are not as accurate as those that come after. So for instance you need to reject the first 10 or so fixes. There used to be a pdf document on the uBlox website detailing this, so it may only apply to their devices.

Steve
Display posts from previous:   
Post new topic   Reply to topic    CCS Forum Index -> General CCS C Discussion All times are GMT - 6 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group