The GPS Project
Guest Book
AirBorn Smart Card Conector
Cheap SBC for your GPS
Other Cheap GPS
Hackers' Notebook
$20 GPS Project Home Page
$20 GPS Project FAQ Page
Email Me
GPS Project Guest Book
Add to Guest Book
Site is back and new items will be arriving soon. Hope all enjoy.
Tim <[email protected]>
Woodland Hills, Ca USA - Wednesday, November 10, 2006 at 15:02:05 (PDT)
I'm interesting about your project $20. If this modules have to conected with the packet radio amateur. Can I order ? I'm in Jakarta-Indonesia and how much total price with shipping ?
Norojono Roy <[email protected]>
Jakarta Selatan, JKT INDONESIA - Wednesday, December 12, 2001 at 02:44:48 (PST)
Hi I wouldn't mind if you add www.protoflight.com/coolsoft.html as a link in your GPS page. I have developed software (mac) for the GPS receiver you mentioned. It features a moving map display and various other functionalities.
Thanks/
omid.
Omid Fanaian <[email protected]>
sunnyvale, CA USA - Monday, December 03, 2001 at 14:40:48 (PST)
You offer some great services.
Mrs. Wathers
Pittsburgh, USA - Thursday, November 08, 2001 at 11:25:39 (PST)
Well, two years later, I finally got around to building my
GPS tracker. Used the board, a Byonics GST-2 and a Byonics
Tiny Trak II. Radio is a RS HTX-212. Right now, it's in
my son's car and I'm following him as he and my wife drive
across the country. I installed a DB-9, so that they can
connect a laptop to the box and use it as an in-car NAV
system, while it reports their position over APRS.
It acquires satellites well, the Byonics chip and TT-II
module work very well, and interfacing to the RS transceiver
was easy, it takes an RJ-45 mic connector (wish it had
audio on the mic connector, though).
I have two more boards that I intend to make into trackers.
73,
Peter, KA1AXY
Peter Simpson, KA1AXY <ka1axy(at)amsat.org>
Holliston, MA USA - Tuesday, August 14, 2001 at 11:26:13 (PDT)
I bought mine only for the patch antenna.
Have the rcvr board for sale. Locals only
please. I could bring it to Foothill College
swap meet for you.
jim <[email protected]>
san jose, ca USA - Monday, February 26, 2001 at 14:22:25 (PST)
I'm wery interested to putt together a gps receiver, anyone know where to by the "dam" hardware ?
Hans Magnusson <[email protected]>
Stockholm, Sweden - Thursday, February 22, 2001 at 14:50:28 (PST)
some informations about GPS & AVL & wireless
mahdy <[email protected]>
tehran, tehran iran - Friday, December 29, 2000 at 23:05:01 (PST)
I'm interested in putting together a gps kit as part of a school project. Does anyone know where I can get my hands on one? I know Mavin's out but hopefully someone might know where I could find them somewhere else. Or if someone has an extra, I'd pay top dollar for it. Please, let me know.
Otherwise, its a great site with a lot of useful information that I'm sure I'll be able to use.
Sawyer Davis <[email protected]>
New Orleans, LA USA - Wednesday, October 18, 2000 at 15:07:04 (PDT)
HI
ANDREAS DOGAKIS <[email protected]>
VOLOS, GRECCE - Friday, September 29, 2000 at 04:19:49 (PDT)
Great project. Spent about an hour total soldering and getting the board ready. Easy project for just about anyone with a little soldering experience.
The software is quick and easy to use. Thanks Tim!
Two questions:
1. The software output for Speed and Altitude boxes appear to show incorrect data (this may be my problem). 8.75 in the data box at 30mph driving and 1,671 (estimate) in the data box for the altitude of the "Mile High City" 5,281 feet. Are the algorithms correct or did I miss something and what would need to be done to correct those?
2. I would like to hook up a serial/NMEA converter. Will the data out of the mini8 work ok or will I need to take data from somewhere else for the input to the chip?
Great Site!!
Jim Armagost <[email protected]>
Littleton, CO USA - Sunday, September 24, 2000 at 21:10:32 (PDT)
Project is intersting. Very interseted in so cheap GPS project.
soni <[email protected]>
USA - Tuesday, June 20, 2000 at 23:27:04 (PDT)
Well, I thought it might never happen but I have completed my project to interface a 4 line LCD to the $20 gps receiver. Anyone who is interested in code and schematic just email me.
Bob Hart <[email protected]>
Medford, OR USA - Monday, June 05, 2000 at 11:43:54 (PDT)
Too bad its sold out at Mavin.
Anyone knows where else I could get this great kit ?
If anyone has a spare one, I'd like to buy it :-)
Yoav Weiss <[email protected]>
Ramat-Gan, Israel - Friday, May 05, 2000 at 17:09:03 (PDT)
This is a very nice place !
Protector 1uno <[email protected]>
Gospic, Li Croatia - Monday, April 17, 2000 at 00:33:05 (PDT)
Sounds like the perfect software/hardware "home-brew" project.Too bad it was a limited supply. I'm like that one- eyed cat, peepin' in the sea-food store. Cheers.
John Keane KA1FL <[email protected]>
Hanover, MA USA - Thursday, March 09, 2000 at 23:38:57 (PST)
This site has been a proving ground for many new routines.
Rich Monosson
Chatsworth, CA USA - Tuesday, February 08, 2000 at 12:52:57 (PST)
Friend just gave me a GPS board kit he ordered and did not use. Got it up and running. Thanks for your site in helping me get the details.
Mark Boden <[email protected]>
Guntersville, AL USA - Saturday, January 29, 2000 at 06:24:32 (PST)
These are proving to be little beautes, Even survived Y2K!
Great work going on here.
Randall Prentice <[email protected]>
Hutt City, New Zealand - Sunday, January 02, 2000 at 21:24:40 (PST)
I am a ham opperator and I am just new at this. So any help that you can give please.
Patric D. Carmichael VE6PDC <[email protected]>
Calgary, AB Canada - Wednesday, December 15, 1999 at 08:21:35 (PST)
ADD TO GUESTBOOK I.M INTERESTED ON MODS TO GPS
art coulombe <[email protected]>
walla walla, WA USA - Monday, November 29, 1999 at 13:41:11 (PST)
Your program has been a great help. I am currently making
a portable unit with a 68HC705 MCU and 2x16 LCD display.
My only suggestion for your program is in the UTC to local
time settings to modify it for half hour increments.
Not having programmed in a Win9x environment, I don't know
how easy it is to tie in with local settings. The clock on
the taskbar does cater for those of us in these silly time
zones.
Anyhow, it works well otherwise.
73 de Dave
David Giles VK5DG <[email protected]>
Mount Gambier, SA Australia - Saturday, November 20, 1999 at 19:30:59 (PST)
Excellent page. I'm waiting to see if there is a brave soul finding a 1 pulse-per-second outpunt on the GPS module, and we will be doing nice timekeeping with it
Jon Iza <[email protected]>
Vitoria, Spain - Saturday, November 13, 1999 at 03:07:02 (PST)
UK Stations might be interested to know that the $20 GPS outputs to a different datum than many GPS that you buy over here. Roger (G4IDE) has added a routine to his UI-View program which recalculates the US standard (WGS-84) datum to the UK datum (OSGB-36). Perhaps this could be done on the other software? Perhaps selectable, like on many of the commercial units? Cheers....
Dave Ackrill <[email protected]>
Wakefield, UK - Sunday, October 31, 1999 at 13:03:00 (PST)
Since it appears that I received one of the last GPS boards from Mavin I was suprised that it was not one of the surplus store dregs - it actually works. Thanks very much for the $20 gps program. This unit will eventually be married to a 4 line LCD and live in my car. I'll let you know how it works.
Bob Hart <[email protected]>
Medford, OR USA - Sunday, October 31, 1999 at 07:09:47 (PST)
I interfaced a 2 line LCD display per KA9KIM's article and added a NEMA interface per the GST-2 article. The unit works great. I am in the process of interfacing a 2 line by 40 char LCD and a 240x64 dot graphics LCD. I'll let you know of the progress. Earl - K1ATV
Earl Campbell <[email protected]>
Phoenix, Az USA - Sunday, October 31, 1999 at 00:25:30 (PDT)
Both my $20 GPS units now working well. :-) Am also logging whilst on the move using UI-View (an APRS program developed by a guy in Boston, UK) and a QBASIC program by a guy who lives near Leeds. The Tim Lauren software is great for seeing where in the sky the satellites are at the moment. One point though. I've been told that the datum is based upon a USA standard. Does anyone know if it's possible to correct for the various other points in the world? Cheers. Dave A
Dave Ackrill <[email protected]>
Wakefield, UK - Saturday, October 30, 1999 at 10:35:18 (PDT)
Got two boards last week and have one up and running. IMHO the info you are using is taken straight from the receiver and is not processed by the CPUThe result of processed infois tx'd on the pin header (to the nav. unit which we do not have...) Is that possibly why *some commands are not working* ? Ever tried to o something with the info that is output on the pinheader? Ever tried to get info output to the display unit - which we do not have either .... Ifall this has been triedI wont bother - otherwise I would like to look into it. Henk Tobbe
Henk Tobbe <[email protected]>
Boat Harbour, Australia - Friday, October 29, 1999 at 23:54:15 (PDT)
Thank you for making the GPS program. I have enjoyed playing with it.
R Badger <[email protected]>
Menlo Park, CA USA - Wednesday, October 27, 1999 at 20:34:53 (PDT)
We have eight units here in the South East of South Australia. Have 2 going 100% good job on the program
Ron Johnson <[email protected]>
Mount Gambier, sa Australia - Monday, October 25, 1999 at 02:21:14 (PDT)
Looking forward to getting one of these units 73 Pauline
Pauline Moldon <[email protected]>
East Sussex, England - Saturday, October 23, 1999 at 08:17:02 (PDT)
Hello again!. Yesterday I had some time and performed the mods to the GPS module. It worked first time :-)!. With the antenna inside the house, I got 4-5 sats, with low and fading signals. With the antenna outside the window, I got 5 strong signals and 3D-fix. Nice! (Spanish: si alguien necesita alguna ayuda o comentar algo del kit en castellano, puede mandarme un e-mail)
JOSE V. GAVILA (EB5AGV/EC5AAU) <[email protected]>
Valencia, SPAIN - Thursday, October 21, 1999 at 10:49:05 (PDT)
Great Information, keep up the good work....Need an address to send the check for the option board..
Ron Walther <[email protected]>
Tucson, AZ USA - Thursday, October 21, 1999 at 07:20:08 (PDT)
Having great fun with the $20 GPS, but still unable to use Tims programs. Using a QBASIC program written by a local guy which does work OK.... Shall keep on trying though. Is there any way to get the non-NMEA output to interface with the PC and plot possition on a map without an NMEA converter?
Dave Ackrill <[email protected]>
Wakefield, UK - Tuesday, October 19, 1999 at 10:35:46 (PDT)
Tim - here's some data for your pages. I took one of the AS boards, and modified it per your original set of instructions (two cuts, two jumpers) and powered it up. It came up in the odd, nondocumented mode that Ken Stackhouse noted. My interpretation of the data in this undocumented format is: DLE, B0 (have position lock) or BF (don't have position lock yet), count byte,
Dave Platt <[email protected]>
Mountain View, CA USA - Monday, October 18, 1999 at 21:58:13 (PDT)
Great stuff! I'll be following the progress very closely.
Don Davis <[email protected]>
baltimore, md USA - Monday, October 18, 1999 at 13:07:22 (PDT)
Excellent, module working, 73
Graham Le Good <[email protected]>
Witney, UK - Monday, October 18, 1999 at 05:12:26 (PDT)
Brilliant! Many thanks.
Peter Crosland G6JNS <[email protected]>
UK - Friday, October 15, 1999 at 11:20:49 (PDT)
I have just received my KIT from Mavin (very nice packaging work!). I will try it this weekend... Will let you know what I find!
JOSE V. GAVILA <[email protected]>
Valencia, SPAIN - Friday, October 15, 1999 at 03:11:02 (PDT)
Hi there, great site and great software! After some starting problems I received my first position data today! Thank you Tim for your information about the GPS Project Kit. 73 from Good Old Germany de Didi / DK7TD
Wolf-Dietrich Barth <[email protected]>
Reutlingen, Germany - Thursday, October 14, 1999 at 10:48:02 (PDT)
Got the GPS boards, looks like I'll be building your project to go with them. Thanks for publishing!
Peter Simpson <[email protected]>
Holliston, MA USA - Thursday, October 14, 1999 at 05:04:55 (PDT)
Tim, Thanks for all of your efforts. This is exactly what I have been looking for, for my motorhome. What a find!! Thanks to all involved. 73, Jerry W3CDE
Jerry Lofstead <[email protected]>
Lilburn, Ga USA - Wednesday, October 13, 1999 at 15:46:12 (PDT)
Do you have any of the option board kits left, especially with cd's? Any luck on the displays. I went to the Aisin site and looked at the info about the gps system. Looks like a nice lcd display. Please let me know. Any feedback on other users of the option boards? Thanks, Fred Brown
Fred Brown <[email protected]>
Greensboro, NC USA - Wednesday, October 13, 1999 at 12:16:32 (PDT)
Nice work, Tim. Thank you for sharing your knowledge so generously.
Jim Kronman <[email protected]>
Los Angeles, CA USA - Monday, October 11, 1999 at 23:08:21 (PDT)
With Tim's clear, concise and accurate notes not to mention his software, I was able to get my module producing data just an hour after unpacking it! Thanks Tim.
Allan Gibbs <[email protected]>
Liverpool, U.K - Saturday, October 09, 1999 at 10:20:39 (PDT)
A very good site to support the $20 GPS. Thank you for your efforts and research. Programming is something that not everyone can do. You have made a piece of neat hardware into a useable device.
Glenn Little <[email protected]>
Goose Creek, SC USA - Thursday, October 07, 1999 at 04:11:15 (PDT)
I appreciate your quick response to my interest in the latest and greatest of developments on your GST-2(Version 9). Will follow progress and hope to adapt my board when the dust has settled on the trials. We have quite a few amateur radio enthusiasts here in Brampton (Peel Amateur Radio Club) who have the Aisin GPS boards and are following progress. Good luck on your initiatives. Kindest regards, Ernie Nemeth, VE3VBJ
Ernest J. Nemeth <[email protected]>
Brampton, ON Canada - Sunday, October 03, 1999 at 21:28:32 (PDT)
good documentation and nice software. It sure would be nice if this thing could be made to work with Street Atlas! I notice that Street Altas supports Rockwell binary. Does anyone know the difference? Bill
Bill Webb <[email protected]>
orange, ca USA - Sunday, September 26, 1999 at 08:33:34 (PDT)
great info- Tim's software and directions were very helpful to get the GPS up and running in less than 20 minutes. now i can spend more time doing something with it ;-)
Pat O <[email protected]>
WA USA - Tuesday, September 21, 1999 at 07:46:39 (PDT)
The Software and The $20 GPS run well,i hope found some code for a Pic/LCD display controler... :-) Thanks for the good work Paulo Gariso_Ct1dta
Paulo Gariso_Ct1dta <[email protected]>
Pa�os de Brandao_IN50RX_Lat N-40�97 Long -8�57, PORTUGAL - Monday, September 20, 1999 at 14:28:43 (PDT)
Waiting for my GPS hardware to arrive from the USA. Can't wait to get going with this project. Paul Smith
Paul Smith <[email protected]>
Wellington, New Zealand - Thursday, September 16, 1999 at 21:32:06 (PDT)
Have GPS kit up and running with basic program and Tim's VB program. Was hoping to build hex to NMEA converter based on Microchip PIC device but I beleive the maths will be too complex. Not familier with other micro chips so not sure what to do next..
Alan Galpin <[email protected]>
Bracknell, UK - Tuesday, September 14, 1999 at 13:06:16 (PDT)
Great site and software !
Antoon Milatz <[email protected]>
Netherlands - Tuesday, September 14, 1999 at 03:22:56 (PDT)
Tim has done a great job getting the GPS unit to work. Nice piece of Software. All purchasors should beat a path to you door (or URL, I guess!)
Kevin Maciunas <[email protected]>
Adelaide, SA Australia - Monday, September 13, 1999 at 17:23:34 (PDT)
Cool site, great project
Tim Laren <[email protected]>
Woodland Hills, CA USA - Sunday, September 12, 1999 at 16:34:31 (PDT)