My eMap projects a circle around your position to show you the error.
Depending on the terrain and weather the circle goes from tiny to huge.
One thing that has not been discussed is using a regular GPS -- most have
some sort of standard output you can capture with a serial port and process.
That way you can use the GPS for other stuff as well. You can snag an eMap
for $180. They also have one model that is even cheaper, if you don't need
to navigate highways and stuff.
Original Message
> > From what I have seen with vehicle-mounted GPS systems, the
> > accuracy is
> > about 10 feet or so -- sometimes more -- usually less. You
> > are at the mercy
> > of the military as far as the accuracy -- it depends on
> > whether they tell
> > the satellites to intentionally transmit errors or not.
>
> Selective Availability (SA) has been turned off. This has reduced errors
to
> a fraction of what they use to be. The errors now are more of a problem
> with the ionosphere. When I watch my GPS data, I see the elevation jump
> around a few feet. Accuracy, in my experience, is within 100 feet.
Garmin GPS-20 & GPS-25 Interface Board SemiKit
by McKinney Technology
That is just a plug in board for the GPS. You buy the GPS engine
seperately. I noticed the board outputs RS232 level signals, you'll need to
put a resistor on the I/O to protect the basic stamp.
__________________________________________________
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I'm no GPS expert. However, I think 9' is pretty good.
The normal accuracy (without SA which was turned off just a while ago) is 20
meters horizontally (worse vertically). However, that makes lots of
assumptions that aren't true on low end (and even in some cases, high end
GPS equipment).
Civilian gear uses the L1-C/A signal only. So you essentially get a psuedo
range from 4 satellites. Because of clock imperfections, these 4 lines from
the satellites will not converge at a single point, so the receiver adjusts
its clock until the 4 points converge (this is why you can get an accurate
time signal off of GPS).
Trimble quotes the following figures:
Sat clock error - 2 ft.
Ephemeris error - 2 ft.
Receiver error - 4 ft.
Atmospheric - 12 ft.
S.A. - 25 ft (this has been turned off, though)
So without SA, the square root of the sum of the squares is around 13
ft.Then you have to multiply by PDOP (position dilution of precision -- no,
I don't understand that number) which ranges from 4 to 6, so you get about
60' best case.
Averaging over a long time can improve accuracy (assuming you aren't
moving). Long time means sample >15 minutes apart.
DGPS (differential GPS) compares the incoming position with a fixed known
receiver to reduce error considerably.
P.S. Hey Scott, any of the old gang still around? I still talk to k5gy once
in a while (in CA, though). Haven't heard from FAZ or many of the rest for
years.
>
Original Message
> From: Scott Tappan Contractor [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=tF_ggmNnf7oiry6LGUkJVqqdaF--4gp1SeZPbfUjXWAg1SfHPlXNC2ARXKFILy8m4-hEsl0T_IR26udRCeY8y5i6eZBthcg]scott.tappan.contractor@n...[/url
> Sent: Wednesday, March 14, 2001 12:46 PM
> To: basicstamps@yahoogroups.com
> Subject: Re: [noparse][[/noparse]basicstamps] Re: GPS
>
>
> I took my 12 channel Garmin out to work where we have a
> Geological marker which we
> use to set and check our positioning equipment. It is supposed to
> be exactly where
> it says it is. My gps averaged 9 foot from where it was supposed
> to be . They are
> accurate enough to find a spot but not accurate enough for
> position fixing for a
> robot unless you are looking for a general position.
>
> Kerry Barlow wrote:
>
> > Hi Everyone: What sort of location accuracy can be expected
> from a GPS unit?
> > I have never owned one of these. I read the recent websites
> listed, and it
> > looks like I could get 1 meter accuracy in a certain mode? If I
> used one on
> > an outdoor robot, could I track to a position such as a house
> reliably? I
> > also would want to either manually or automatically program my robot to
> > avoid trees, rocks etc. Would this be possible?
> > The software would probably grey my hair some more, but..my
> hair is falling
> > out anyhow.
> > Does anyone else have a better idea for accurate outdoor positioning?
> > My goal was to have an autonomous robot that could go from pt
> A, to pt B and
> > know what obstacles were in its path ahead of time, or at least
> have it know
> > it was headed in the general direction of "B" and then I could use my IR
> > code to detect obstacles in between A, and B. I had thought of
> an onboard
> > compass but that only gives me a bearing, but I could be off the bearing
> > either side by 200 feet and the robot would not know.
> > The basic stamp versions are of course a necessity for myself,
> software wise.
> >
> > Sincerely
> > Kerry
> > Admin@M...
> > WWW server hosting [url=Http://mntnweb.com]Http://mntnweb.com[/url]
> > Kerry Barlow
> > p.o. box 21
> > kirkwood ny
> > 13795
> >
> >
> >
> > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
Dear Mike,
This is the old SIRF I chipset that does not work at all. It really takes
a lot of power and is very slow. I have a board with this set and it barely
finds the sats. Just FYI
Mike Mocenter
Original Message
From: Mike DeMetz <miked@t...>
To: <basicstamps@yahoogroups.com>
Sent: Wednesday, March 14, 2001 9:15 AM
Subject: [noparse][[/noparse]basicstamps] Re: GPS
__________________________________________________
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TAPR is apparently the Tucson Amateur Packet Radio club. I'm willing to bet
this board is one of the things they sell. I'm thinking it connects a GPS to
a 2m or 440cm radio to broadcast the GPS location back to a home computer.
http://www.tapr.org/
Original Message
> > I guess I was under the misunderstanding that the Garman 25 would
connect
> > directly to the stamp via serial cable, without the daughter board.
>
> It will - I use Garmin 25, 35 & 36 modules & connect them directly to
> Stamp & BasicX chips via serial.
>
> Not sure what the TAPR board is - maybe a microcontroller board that
> goes between the GPS & the radio?
For the guy on a shoe string budget, what is the cost of cheepest gps unit?
Dave
--- david@b... wrote:
> On 14 Mar 2001, at 21:56, david cousins <basicstamps@yahoogroups.com> wrote:
>
> > I guess I was under the misunderstanding that the Garman 25 would connect
> > directly to the stamp via serial cable, without the daughter board.
>
> It will - I use Garmin 25, 35 & 36 modules & connect them directly to
> Stamp & BasicX chips via serial.
>
> Not sure what the TAPR board is - maybe a microcontroller board that
> goes between the GPS & the radio?
>
> Dave
>
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
__________________________________________________
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Yahoo! Auctions - Buy the things you want at great prices. http://auctions.yahoo.com/
> > I guess I was under the misunderstanding that the Garman 25
> would connect
> > directly to the stamp via serial cable, without the daughter board.
>
> It will - I use Garmin 25, 35 & 36 modules & connect them directly to
> Stamp & BasicX chips via serial.
>
> Not sure what the TAPR board is - maybe a microcontroller board that
> goes between the GPS & the radio?
I believe the board also contains a voltage regulator. When I connected my
Garmin, I had to purchase a cable with an unusual plug.
This stuff is so cool. I'm constantly amazed at the capability, and
availablity of electronics. I wish I majored in electrical engineering instead
of Civil.
--- Rodent <daweasel@s...> wrote:
> TAPR is apparently the Tucson Amateur Packet Radio club. I'm willing to bet
> this board is one of the things they sell. I'm thinking it connects a GPS to
> a 2m or 440cm radio to broadcast the GPS location back to a home computer.
>
> http://www.tapr.org/
>
>
Original Message
>
> > > I guess I was under the misunderstanding that the Garman 25 would
> connect
> > > directly to the stamp via serial cable, without the daughter board.
> >
> > It will - I use Garmin 25, 35 & 36 modules & connect them directly to
> > Stamp & BasicX chips via serial.
> >
> > Not sure what the TAPR board is - maybe a microcontroller board that
> > goes between the GPS & the radio?
>
>
>
>
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
__________________________________________________
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Yahoo! Auctions - Buy the things you want at great prices. http://auctions.yahoo.com/
> TAPR is apparently the Tucson Amateur Packet Radio club. I'm
> willing to bet
> this board is one of the things they sell. I'm thinking it
> connects a GPS to
> a 2m or 440cm radio to broadcast the GPS location back to a
> home computer.
For that you use a TNC. This board is for power and a data connection.
Note that the Garmin boards come in various models, some with built in
antennae, others with 5 volt or wide voltage (9-28?). The stamp reads the
data easily as it is serial- something like this.
'
[noparse][[/noparse] Variables ]
'
time var byte(6)
latA var byte(4)
latB var byte(4)
lonA var byte(5)
lonB var byte(4)
lat_hemi var byte
lon_hemi var byte
status var byte
n48 var I forget the number
'
'
get_data:
serin 13,n48,2000,no_data,[noparse][[/noparse]wait("GPGGA,"),str time\6,skip 1,str latA\4,skip
1,str latB\4,skip 1,lat_hemi,skip 1,str lonA\5,skip 1,str lonB\4,skip
1,lon_hemi]
But watch the voltage level coming for the GPS. For the CMOS version, it
you supply it with 5 volts, it's signal will go from 0 to 5 volts (TTL
levels). Some devices will output true RS232 level signals (-12v to +12v).
Thank you to everyone who has responded to my GPS questions. I am getting
the idea, that any handheld gps would output a data stream in serial, that
the stamp could read, is this correct? Going on this assumption, possibly a
used handheld unit would work for my outdoor robot? It really appears like
to do precise navigation around trees, and small sheds, I would need the
DGPS radio signal as well. Wouldnt it be better then to discard the GPS
entirely and use some sort of dual radio signals that my robot could
triangulate off of? Maybe I need to mount a dog, or cat on my robot, and
train them to steer the thing, maybe a mouse, they weigh less.
I too am on a shoestring budget, in fact... I repair my shoestrings
sometimes ;-)
I would be interested in any discount or low prices people may know about
for a GPS.
Sincerely
Kerry Admin@M...
WWW server hosting [url=Http://mntnweb.com]Http://mntnweb.com[/url]
Kerry Barlow
p.o. box 21
kirkwood ny
13795
> For the guy on a shoe string budget, what is the cost of cheepest gps unit?
I saw a posting yesterday about some new units which are US$70 for the
GPS board & US$20 for the antenna. Company name escapes me at the
moment...
You might want to look at the Garmin GPS36 - GPS board & antenna in
the 1 package about the same size as a mouse. 12 channel, DGPS input.
10-30V DC input, true serial output. There are a few different models so be
careful. Has a long cable with bare wires at the end. About US$150 I think
(I buy mine in Malaysia and Canada).
> I just took a quick look at E-Bay ... did a search for GPS ...
> I don't know what type you would want but they had quite a few for under
100.00
>
> Garmin 38 68.00
> Magellan 2000 70.00
> Magellan Blazer 12 53.00
> Magellan Nav 5000 78.77
> Magellan 2000 50.50
> Magellan 310 61.00
> Magellan Pioneer 48.00
>
> anyway these, along with many for 100.00 and up, were listed on page
> 1 of 16. I didn't look past page one.
>
> So, might be worth a look. They also had many listings for cables
> and adapters.
>
> VF
>
> >
> >I would be interested in any discount or low prices people may know about
> >for a GPS.
> >Sincerely
>
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
Hi:
I am looking at different GPS OEM receivers which are available and I was
wondering if anyone had any recomendations on something whcih was fun to play
around with... Motorola M12, Garmin series etc...
Thanks!
-=Randy Knutson
Do you Yahoo!?
New DSL Internet Access from SBC & Yahoo!
[noparse][[/noparse]Non-text portions of this message have been removed]
Subject: RE: gps
BG Micro has some Motorola Oncore units for $15, less antenna. http://www.bgmicro.com/lmad.htm
Most all can be set to NMEA output which the STAMP can handle. Some Garmins
also have a 9600 baud ASCII mode.
>
> Hi:
> I am looking at different GPS OEM receivers which are available and I was
> wondering if anyone had any recomendations on something whcih was fun to
> play around with... Motorola M12, Garmin series etc... Thanks! -=Randy
> Knutson
>
>
My readings match Earl's. You may want to double-check your wiring:
|
9 7 5 3 1 |
|
10 8 6 4 2 |
___________________|
+5 on pin 2, ground on pin 3
Some other stuff I've found in playing with this module:
- Use 9600, n, 8, 1, true for Motorola binary data msgs
- Use 4800, n, 8, 1, true for NMEA msgs
- You only need one ground connection between the module and
your Stamp--all "return" pins are already connected on the module
- Use exclusive or's to form the command checksums
I've got some very rough but working BS2 code that sets the date &
time, reads date & time, gets status, gets ID if anybody's
interested. May help anyone stuck getting started. This is a
_very_ nifty, Stamp-friendly gadget for the price. Here's hoping we
can find a decent (active) antenna that'll cost <= the module.
On 28 Sep 02 at 19:20, Earl Bollinger wrote:
> I have two units, but I am trying to locate a active antenna to go
> with them. My two units measure 1.10 K ohms to ground...
Hi:
If anyone has gotten the gps recievers bg micro was selling to work could you
please email me. The reason I ask is because I ordered two units from them and
there is a direct short from VCC and GND on both units...
Thanks!
-=Randy Knutson
Nick Stedman wrote:Hi Ben,
This sounds very interesting. I've been looking for a way of communicating
with a desktop that is faster than RS232. I see your using the serial
command, but could you possibly use this usb chip with the Stamp to achieve
faster baud rates, perhaps in a bit banging routine?
Nick
> Hi All,
>
> For those interested in implementing USB on a stamp, I have had success,
> finally, in creating a GUI app that talks to an FTDI chip connected to a
> Stamp.
>
> The solution was very simple in the end.
>
> Being a Mac user, the sample on my website is for the Mac. However, I'm
> sure that the same principles apply to Visual Basic (Virtual Com ports,
> etc).
>
> The Program was written in RealBasic which is basically the Mac equivalent
> of Visual Basic.
>
> This is so cool! It now means that I can write supporting Applications for
> the Mac (and Windows as RealBasic complies for either platform), for my
> stamp based USB projects (EG - USB based datalogger...).
>
> url: http://www.lennard.net.nz/ click on circuit ideas and then USB (under
> buses).
To UNSUBSCRIBE, just send mail to: basicstamps-unsubscribe@yahoogroups.com
from the same email address that you subscribed. Text in the Subject and Body of
the message will be ignored.
I have two units, but I am trying to locate a active antenna to go with
them.
My two units measure 1.10 K ohms to ground. Did you have your multimeter set
too high on the resistance scale?
1k ohm to ground isn't out of line, that is only about 5 ma of current at
5v.
Hi:
If anyone has gotten the gps recievers bg micro was selling to work could
you please email me. The reason I ask is because I ordered two units from
them and there is a direct short from VCC and GND on both units...
Thanks!
-=Randy Knutson
> i would be interested in the starter code to my private email
> address if thats possible for you?
>
> normdoty@b... i keep this one un used to keep out all the
> sales Smile.
>
> thanks a lot.
> norm
>
>
>
> >From: "S Parkis" <parkiss@e...>
> >Reply-To: basicstamps@yahoogroups.com
> >To: basicstamps@yahoogroups.com
> >Subject: RE: [noparse][[/noparse]basicstamps] gps
> >Date: Sat, 28 Sep 2002 21:10:23 +0800
> >
> >Randy-
> >
> >My readings match Earl's. You may want to double-check your wiring:
> >
> > |
> > 9 7 5 3 1 |
> > |
> > 10 8 6 4 2 |
> >___________________|
> >
> >+5 on pin 2, ground on pin 3
> >
> >Some other stuff I've found in playing with this module:
> >
> > - Use 9600, n, 8, 1, true for Motorola binary data msgs
> > - Use 4800, n, 8, 1, true for NMEA msgs
> > - You only need one ground connection between the module and
> >your Stamp--all "return" pins are already connected on the module
> > - Use exclusive or's to form the command checksums
> >
> >Good info at:
> >http://www.motorola.com/ies/GPS/pdfs/ch1.pdf
> >...
> >http://www.motorola.com/ies/GPS/pdfs/ch6.pdf
> >
> >I've got some very rough but working BS2 code that sets the date &
> >time, reads date & time, gets status, gets ID if anybody's
> >interested. May help anyone stuck getting started. This is a
> >_very_ nifty, Stamp-friendly gadget for the price. Here's hoping we
> >can find a decent (active) antenna that'll cost <= the module.
> >
> >On 28 Sep 02 at 19:20, Earl Bollinger wrote:
> >
> > > I have two units, but I am trying to locate a active antenna to go
> > > with them. My two units measure 1.10 K ohms to ground...
> >
> >To UNSUBSCRIBE, just send mail to:
> > basicstamps-unsubscribe@yahoogroups.com
> >from the same email address that you subscribed. Text in the Subject and
> >Body of the message will be ignored.
> >
> >
> >Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
>
>
> _________________________________________________________________
> Join the world's largest e-mail service with MSN Hotmail.
> http://www.hotmail.com
>
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
> from the same email address that you subscribed. Text in the
> Subject and Body of the message will be ignored.
>
>
> Your use of Yahoo! Groups is subject to
> http://docs.yahoo.com/info/terms/
>
>
i would be interested in the starter code to my private email address if
thats possible for you?
normdoty@b... i keep this one un used to keep out all the sales
Smile.
thanks a lot.
norm
>From: "S Parkis" <parkiss@e...>
>Reply-To: basicstamps@yahoogroups.com
>To: basicstamps@yahoogroups.com
>Subject: RE: [noparse][[/noparse]basicstamps] gps
>Date: Sat, 28 Sep 2002 21:10:23 +0800
>
>Randy-
>
>My readings match Earl's. You may want to double-check your wiring:
>
> |
> 9 7 5 3 1 |
> |
> 10 8 6 4 2 |
>___________________|
>
>+5 on pin 2, ground on pin 3
>
>Some other stuff I've found in playing with this module:
>
> - Use 9600, n, 8, 1, true for Motorola binary data msgs
> - Use 4800, n, 8, 1, true for NMEA msgs
> - You only need one ground connection between the module and
>your Stamp--all "return" pins are already connected on the module
> - Use exclusive or's to form the command checksums
>
>Good info at:
>http://www.motorola.com/ies/GPS/pdfs/ch1.pdf
>...
>http://www.motorola.com/ies/GPS/pdfs/ch6.pdf
>
>I've got some very rough but working BS2 code that sets the date &
>time, reads date & time, gets status, gets ID if anybody's
>interested. May help anyone stuck getting started. This is a
>_very_ nifty, Stamp-friendly gadget for the price. Here's hoping we
>can find a decent (active) antenna that'll cost <= the module.
>
>On 28 Sep 02 at 19:20, Earl Bollinger wrote:
>
> > I have two units, but I am trying to locate a active antenna to go
> > with them. My two units measure 1.10 K ohms to ground...
>
>To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
>from the same email address that you subscribed. Text in the Subject and
>Body of the message will be ignored.
>
>
>Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
_________________________________________________________________
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Hello
I have seen various references in old posts similar to that pasted
below (Dec 2002)
>>> Parallax even has some
>>> info on how to read / decode the ( GPS NMEA ) data with a Stamp
I have been to Parallax and got side-tracked with lot's of other
interesting articles there, but found nothing so far on GPS on their
site.
Searching NMEA returns nothing, and searching GPS just gives a
compass module.
Obviously I'm missing something, where should I be looking ? or has
it now gone.
Go to this site, http://www.lls.se/~mux/micro/pdf/Aero%20GPS%
20Brief.pdf
Its an article by Jon Williams on using a BS2P-24 with a Garmin GPS
along with Stamp software for reading and decoding. If the link fails
then go to Google, search for GPS, then go to advanced search and add
the extra words STAMP. Jon's article was about the third or fourth
hit.
--- In basicstamps@yahoogroups.com, "philiptuck" <follies@b...> wrote:
> Hello
> I have seen various references in old posts similar to that pasted
> below (Dec 2002)
>
> >>> Parallax even has some
> >>> info on how to read / decode the ( GPS NMEA ) data with a Stamp
>
> I have been to Parallax and got side-tracked with lot's of other
> interesting articles there, but found nothing so far on GPS on
their
> site.
> Searching NMEA returns nothing, and searching GPS just gives a
> compass module.
>
> Obviously I'm missing something, where should I be looking ? or has
> it now gone.
>
> Phil
--- In basicstamps@yahoogroups.com, "Hal ALbach" <halbach@f...> wrote:
> Go to this site, http://www.lls.se/~mux/micro/pdf/Aero%20GPS%
> 20Brief.pdf
> Its an article by Jon Williams on using a BS2P-24 with a Garmin GPS
> along with Stamp software for reading and decoding. If the link
fails
> then go to Google, search for GPS, then go to advanced search and
add
> the extra words STAMP. Jon's article was about the third or fourth
> hit.
Thanks Hal.
The article you pointed me to was the one I had found originally
<smile>, - but could not find the code download referred to in it.
Found it now, its listed under >>
"Column #83: Where in the World is my BASIC Stamp?"
at http://www.parallax.com/html_pages/resources/nvcolumns/Nuts_Volts_Down
loads_V3.asp
They might not have hit the World Trade centers if no one ever invented
airplanes also...
On Fri, 2003-05-30 at 13:10, kenneth magers wrote:
> i have seen reference to people using gps stamp
> interfaces for model planes and now a rc truck
> please anyone working or developing anything of this
> nature becarefull gps is a usefull thing but in the
> wrong hand's it could be used for some bad thing's
> you don't have any way of knowing what someone want's
> with that information they might not have hit the
> towers in nyc if they didn't have that gps unit
>
> __________________________________
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> http://calendar.yahoo.com
>
> To UNSUBSCRIBE, just send mail to:
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of the message will be ignored.
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
--
Bill Marcy <wmarcy@s...>
i have seen reference to people using gps stamp
interfaces for model planes and now a rc truck
please anyone working or developing anything of this
nature becarefull gps is a usefull thing but in the
wrong hand's it could be used for some bad thing's
you don't have any way of knowing what someone want's
with that information they might not have hit the
towers in nyc if they didn't have that gps unit
__________________________________
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In a message dated 5/30/2003 10:13:04 AM Pacific Daylight Time, kenneth_m_73149@y... writes:
> i have seen reference to people using gps stamp
> interfaces for model planes and now a rc truck
> please anyone working or developing anything of this
> nature becarefull gps is a usefull thing but in the
> wrong hand's it could be used for some bad thing's
> you don't have any way of knowing what someone want's
> with that information they might not have hit the
> towers in nyc if they didn't have that gps unit
Good point!
[noparse][[/noparse]Non-text portions of this message have been removed]
Comments
Depending on the terrain and weather the circle goes from tiny to huge.
One thing that has not been discussed is using a regular GPS -- most have
some sort of standard output you can capture with a serial port and process.
That way you can use the GPS for other stuff as well. You can snag an eMap
for $180. They also have one model that is even cheaper, if you don't need
to navigate highways and stuff.
Original Message
> > From what I have seen with vehicle-mounted GPS systems, the
> > accuracy is
> > about 10 feet or so -- sometimes more -- usually less. You
> > are at the mercy
> > of the military as far as the accuracy -- it depends on
> > whether they tell
> > the satellites to intentionally transmit errors or not.
>
> Selective Availability (SA) has been turned off. This has reduced errors
to
> a fraction of what they use to be. The errors now are more of a problem
> with the ionosphere. When I watch my GPS data, I see the elevation jump
> around a few feet. Accuracy, in my experience, is within 100 feet.
Garmin GPS-20 & GPS-25 Interface Board SemiKit
by McKinney Technology
That is just a plug in board for the GPS. You buy the GPS engine
seperately. I noticed the board outputs RS232 level signals, you'll need to
put a resistor on the I/O to protect the basic stamp.
Paul
>
Original Message
> From: david cousins [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=Dw1feKJ3d_Bulishxu1CoCHnp4lGG_cH_V2FzQUE_dSJxJA7Az9CU-nJWgNggEb3X7AeyE5JF9PakPE]cuz_hsv@y...[/url
> Sent: Tuesday, March 13, 2001 1:21 PM
> To: basicstamps@yahoogroups.com
> Subject: RE: [noparse][[/noparse]basicstamps] GPS
>
>
> Paul,
> I went to the tapr sight and found the "interface
> board...kit". What exactly
> is that? Is that board a gps system, or a daughter board for
> the Garmin 25?
> Dave
> --- Paul Verhage <pverhage@s...> wrote:
> > Try the TAPR site, at www.tapr.org.
> >
> > Paul
> >
> > >
Original Message
> > > From: morpheus358@a... [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=QY9Ad7xb3dMVpCDM-RHsovs0S3OHJvxZRq-eF1lcaDS8PmjF3E1fJkgct_sFssKQVpg8ZjJB9B_w7TKE]morpheus358@a...[/url
> > > Sent: Monday, March 12, 2001 5:50 PM
> > > To: basicstamps@yahoogroups.com
> > > Subject: [noparse][[/noparse]basicstamps] GPS
> > >
> > >
> > > Where can i buy a GPS system that can tell a stamp robot
> were it is
> > > and were it is going? And how do I program it?
> > >
> > > Please Help.
> > >
> > >
> > >
> > >
> > > Your use of Yahoo! Groups is subject to
> > > http://docs.yahoo.com/info/terms/
> > >
> > >
> >
> >
> >
> > Your use of Yahoo! Groups is subject to
http://docs.yahoo.com/info/terms/
>
>
__________________________________________________
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Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
The normal accuracy (without SA which was turned off just a while ago) is 20
meters horizontally (worse vertically). However, that makes lots of
assumptions that aren't true on low end (and even in some cases, high end
GPS equipment).
Civilian gear uses the L1-C/A signal only. So you essentially get a psuedo
range from 4 satellites. Because of clock imperfections, these 4 lines from
the satellites will not converge at a single point, so the receiver adjusts
its clock until the 4 points converge (this is why you can get an accurate
time signal off of GPS).
Trimble quotes the following figures:
Sat clock error - 2 ft.
Ephemeris error - 2 ft.
Receiver error - 4 ft.
Atmospheric - 12 ft.
S.A. - 25 ft (this has been turned off, though)
So without SA, the square root of the sum of the squares is around 13
ft.Then you have to multiply by PDOP (position dilution of precision -- no,
I don't understand that number) which ranges from 4 to 6, so you get about
60' best case.
Averaging over a long time can improve accuracy (assuming you aren't
moving). Long time means sample >15 minutes apart.
DGPS (differential GPS) compares the incoming position with a fixed known
receiver to reduce error considerably.
Read: http://vancouver-webpages.com/peter/gpsfaq.txt
Regards,
Al Williams
AWC
* Spring break special: http://www.al-williams.com/awce
P.S. Hey Scott, any of the old gang still around? I still talk to k5gy once
in a while (in CA, though). Haven't heard from FAZ or many of the rest for
years.
>
Original Message
> From: Scott Tappan Contractor [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=tF_ggmNnf7oiry6LGUkJVqqdaF--4gp1SeZPbfUjXWAg1SfHPlXNC2ARXKFILy8m4-hEsl0T_IR26udRCeY8y5i6eZBthcg]scott.tappan.contractor@n...[/url
> Sent: Wednesday, March 14, 2001 12:46 PM
> To: basicstamps@yahoogroups.com
> Subject: Re: [noparse][[/noparse]basicstamps] Re: GPS
>
>
> I took my 12 channel Garmin out to work where we have a
> Geological marker which we
> use to set and check our positioning equipment. It is supposed to
> be exactly where
> it says it is. My gps averaged 9 foot from where it was supposed
> to be . They are
> accurate enough to find a spot but not accurate enough for
> position fixing for a
> robot unless you are looking for a general position.
>
> Kerry Barlow wrote:
>
> > Hi Everyone: What sort of location accuracy can be expected
> from a GPS unit?
> > I have never owned one of these. I read the recent websites
> listed, and it
> > looks like I could get 1 meter accuracy in a certain mode? If I
> used one on
> > an outdoor robot, could I track to a position such as a house
> reliably? I
> > also would want to either manually or automatically program my robot to
> > avoid trees, rocks etc. Would this be possible?
> > The software would probably grey my hair some more, but..my
> hair is falling
> > out anyhow.
> > Does anyone else have a better idea for accurate outdoor positioning?
> > My goal was to have an autonomous robot that could go from pt
> A, to pt B and
> > know what obstacles were in its path ahead of time, or at least
> have it know
> > it was headed in the general direction of "B" and then I could use my IR
> > code to detect obstacles in between A, and B. I had thought of
> an onboard
> > compass but that only gives me a bearing, but I could be off the bearing
> > either side by 200 feet and the robot would not know.
> > The basic stamp versions are of course a necessity for myself,
> software wise.
> >
> > Sincerely
> > Kerry
> > Admin@M...
> > WWW server hosting [url=Http://mntnweb.com]Http://mntnweb.com[/url]
> > Kerry Barlow
> > p.o. box 21
> > kirkwood ny
> > 13795
> >
> >
> >
> > Your use of Yahoo! Groups is subject to
http://docs.yahoo.com/info/terms/
Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
This is the old SIRF I chipset that does not work at all. It really takes
a lot of power and is very slow. I have a board with this set and it barely
finds the sats. Just FYI
Mike Mocenter
Original Message
From: Mike DeMetz <miked@t...>
To: <basicstamps@yahoogroups.com>
Sent: Wednesday, March 14, 2001 9:15 AM
Subject: [noparse][[/noparse]basicstamps] Re: GPS
> Here is another small GPS unit. Note they are due in April but the
delivery
> date has been pushed back twice now.
> http://www.laipac.com/msg4.htm
>
>
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
directly to the stamp via serial cable, without the daughter board.
Thanks
Dave
--- Paul Verhage <pverhage@s...> wrote:
> Do you mean this?
>
> Garmin GPS-20 & GPS-25 Interface Board SemiKit
> by McKinney Technology
>
> That is just a plug in board for the GPS. You buy the GPS engine
> seperately. I noticed the board outputs RS232 level signals, you'll need to
> put a resistor on the I/O to protect the basic stamp.
>
> Paul
>
> >
Original Message
> > From: david cousins [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=HpXDayv3jyhe8Wl2C-1DU0Ql9d5ZIafZdFNRSlK5pJcE4lAPbxIweuqLGTWZN24g7iAMzL1lEw00]cuz_hsv@y...[/url
> > Sent: Tuesday, March 13, 2001 1:21 PM
> > To: basicstamps@yahoogroups.com
> > Subject: RE: [noparse][[/noparse]basicstamps] GPS
> >
> >
> > Paul,
> > I went to the tapr sight and found the "interface
> > board...kit". What exactly
> > is that? Is that board a gps system, or a daughter board for
> > the Garmin 25?
> > Dave
> > --- Paul Verhage <pverhage@s...> wrote:
> > > Try the TAPR site, at www.tapr.org.
> > >
> > > Paul
> > >
> > > >
Original Message
> > > > From: morpheus358@a... [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=JRbhRxppxGthKV0dl0fRap0AQv2471-zVMpX1RIALR4mORqwzOQY2jt4GQ7yCpMnXcPvBFRgJMQ2BlA]morpheus358@a...[/url
> > > > Sent: Monday, March 12, 2001 5:50 PM
> > > > To: basicstamps@yahoogroups.com
> > > > Subject: [noparse][[/noparse]basicstamps] GPS
> > > >
> > > >
> > > > Where can i buy a GPS system that can tell a stamp robot
> > were it is
> > > > and were it is going? And how do I program it?
> > > >
> > > > Please Help.
> > > >
> > > >
> > > >
> > > >
> > > > Your use of Yahoo! Groups is subject to
> > > > http://docs.yahoo.com/info/terms/
> > > >
> > > >
> > >
> > >
> > >
> > > Your use of Yahoo! Groups is subject to
> http://docs.yahoo.com/info/terms/
> >
> >
>
>
> __________________________________________________
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> http://auctions.yahoo.com/
>
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
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> I guess I was under the misunderstanding that the Garman 25 would connect
> directly to the stamp via serial cable, without the daughter board.
It will - I use Garmin 25, 35 & 36 modules & connect them directly to
Stamp & BasicX chips via serial.
Not sure what the TAPR board is - maybe a microcontroller board that
goes between the GPS & the radio?
Dave
this board is one of the things they sell. I'm thinking it connects a GPS to
a 2m or 440cm radio to broadcast the GPS location back to a home computer.
http://www.tapr.org/
Original Message
> > I guess I was under the misunderstanding that the Garman 25 would
connect
> > directly to the stamp via serial cable, without the daughter board.
>
> It will - I use Garmin 25, 35 & 36 modules & connect them directly to
> Stamp & BasicX chips via serial.
>
> Not sure what the TAPR board is - maybe a microcontroller board that
> goes between the GPS & the radio?
For the guy on a shoe string budget, what is the cost of cheepest gps unit?
Dave
--- david@b... wrote:
> On 14 Mar 2001, at 21:56, david cousins <basicstamps@yahoogroups.com> wrote:
>
> > I guess I was under the misunderstanding that the Garman 25 would connect
> > directly to the stamp via serial cable, without the daughter board.
>
> It will - I use Garmin 25, 35 & 36 modules & connect them directly to
> Stamp & BasicX chips via serial.
>
> Not sure what the TAPR board is - maybe a microcontroller board that
> goes between the GPS & the radio?
>
> Dave
>
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
__________________________________________________
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> would connect
> > directly to the stamp via serial cable, without the daughter board.
>
> It will - I use Garmin 25, 35 & 36 modules & connect them directly to
> Stamp & BasicX chips via serial.
>
> Not sure what the TAPR board is - maybe a microcontroller board that
> goes between the GPS & the radio?
I believe the board also contains a voltage regulator. When I connected my
Garmin, I had to purchase a cable with an unusual plug.
Paul
availablity of electronics. I wish I majored in electrical engineering instead
of Civil.
--- Rodent <daweasel@s...> wrote:
> TAPR is apparently the Tucson Amateur Packet Radio club. I'm willing to bet
> this board is one of the things they sell. I'm thinking it connects a GPS to
> a 2m or 440cm radio to broadcast the GPS location back to a home computer.
>
> http://www.tapr.org/
>
>
Original Message
>
> > > I guess I was under the misunderstanding that the Garman 25 would
> connect
> > > directly to the stamp via serial cable, without the daughter board.
> >
> > It will - I use Garmin 25, 35 & 36 modules & connect them directly to
> > Stamp & BasicX chips via serial.
> >
> > Not sure what the TAPR board is - maybe a microcontroller board that
> > goes between the GPS & the radio?
>
>
>
>
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
__________________________________________________
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> willing to bet
> this board is one of the things they sell. I'm thinking it
> connects a GPS to
> a 2m or 440cm radio to broadcast the GPS location back to a
> home computer.
For that you use a TNC. This board is for power and a data connection.
Paul
antennae, others with 5 volt or wide voltage (9-28?). The stamp reads the
data easily as it is serial- something like this.
'
[noparse][[/noparse] Variables ]
'
time var byte(6)
latA var byte(4)
latB var byte(4)
lonA var byte(5)
lonB var byte(4)
lat_hemi var byte
lon_hemi var byte
status var byte
n48 var I forget the number
'
'
get_data:
serin 13,n48,2000,no_data,[noparse][[/noparse]wait("GPGGA,"),str time\6,skip 1,str latA\4,skip
1,str latB\4,skip 1,lat_hemi,skip 1,str lonA\5,skip 1,str lonB\4,skip
1,lon_hemi]
goto get_data
no_data:
debug "No Data", cr
goto get_data
Original Message
From: Paul Verhage [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=niKmz4JzZr8iJltq2GsCKgxI-0Db04B33LeOCT9Czeq__d9JAN9ICM5qLL0SWqvqwl8kikSBgUI9czDJXsKN8g]pverhage@s...[/url
Sent: Thursday, March 15, 2001 9:38 AM
To: 'basicstamps@yahoogroups.com'
Subject: RE: [noparse][[/noparse]basicstamps] GPS
you supply it with 5 volts, it's signal will go from 0 to 5 volts (TTL
levels). Some devices will output true RS232 level signals (-12v to +12v).
Paul
>
Original Message
> From: William Thompson [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=KHb8FS502Nk70KAsKZcrtc7quNWoVOysQbCHqI-Adqifzr2K3_-_QRwGIShRToRw5czyO7aiQF-CV9wLqZ5t7yakEboNAx7dCjwLXw]william.e.thompson@w...[/url
> Sent: Thursday, March 15, 2001 8:26 AM
> To: basicstamps@yahoogroups.com
> Subject: RE: [noparse][[/noparse]basicstamps] GPS
>
>
> Note that the Garmin boards come in various models, some with built in
> antennae, others with 5 volt or wide voltage (9-28?). The
> stamp reads the
> data easily as it is serial- something like this.
>
> '
[noparse][[/noparse] Variables
> ]
> '
> time var byte(6)
> latA var byte(4)
> latB var byte(4)
> lonA var byte(5)
> lonB var byte(4)
> lat_hemi var byte
> lon_hemi var byte
> status var byte
> n48 var I forget the number
> '
> '
> get_data:
> serin 13,n48,2000,no_data,[noparse][[/noparse]wait("GPGGA,"),str time\6,skip
> 1,str latA\4,skip
> 1,str latB\4,skip 1,lat_hemi,skip 1,str lonA\5,skip 1,str lonB\4,skip
> 1,lon_hemi]
>
> goto get_data
>
>
> no_data:
> debug "No Data", cr
> goto get_data
>
>
Original Message
> From: Paul Verhage [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=tHBfzlFT4tdijYtzSLaYBalpoR1-lla-MZmV6vw70JNeJAF3bYTu86vukK1XOh4uMPyVg-hawcq04HDTXDMSTpQ]pverhage@s...[/url
> Sent: Thursday, March 15, 2001 9:38 AM
> To: 'basicstamps@yahoogroups.com'
> Subject: RE: [noparse][[/noparse]basicstamps] GPS
>
>
>
>
>
>
>
>
> Your use of Yahoo! Groups is subject to
http://docs.yahoo.com/info/terms/
the idea, that any handheld gps would output a data stream in serial, that
the stamp could read, is this correct? Going on this assumption, possibly a
used handheld unit would work for my outdoor robot? It really appears like
to do precise navigation around trees, and small sheds, I would need the
DGPS radio signal as well. Wouldnt it be better then to discard the GPS
entirely and use some sort of dual radio signals that my robot could
triangulate off of? Maybe I need to mount a dog, or cat on my robot, and
train them to steer the thing, maybe a mouse, they weigh less.
I too am on a shoestring budget, in fact... I repair my shoestrings
sometimes ;-)
I would be interested in any discount or low prices people may know about
for a GPS.
Sincerely
Kerry
Admin@M...
WWW server hosting [url=Http://mntnweb.com]Http://mntnweb.com[/url]
Kerry Barlow
p.o. box 21
kirkwood ny
13795
> For the guy on a shoe string budget, what is the cost of cheepest gps unit?
I saw a posting yesterday about some new units which are US$70 for the
GPS board & US$20 for the antenna. Company name escapes me at the
moment...
You might want to look at the Garmin GPS36 - GPS board & antenna in
the 1 package about the same size as a mouse. 12 channel, DGPS input.
10-30V DC input, true serial output. There are a few different models so be
careful. Has a long cable with bare wires at the end. About US$150 I think
(I buy mine in Malaysia and Canada).
Dave
I don't know what type you would want but they had quite a few for under 100.00
Garmin 38 68.00
Magellan 2000 70.00
Magellan Blazer 12 53.00
Magellan Nav 5000 78.77
Magellan 2000 50.50
Magellan 310 61.00
Magellan Pioneer 48.00
anyway these, along with many for 100.00 and up, were listed on page
1 of 16. I didn't look past page one.
So, might be worth a look. They also had many listings for cables
and adapters.
VF
>
>I would be interested in any discount or low prices people may know about
>for a GPS.
>Sincerely
http://www.digisys.net/timeline/arrival.html
Enjoy, Bill Mrozinski
Vince Fell wrote:
> I just took a quick look at E-Bay ... did a search for GPS ...
> I don't know what type you would want but they had quite a few for under
100.00
>
> Garmin 38 68.00
> Magellan 2000 70.00
> Magellan Blazer 12 53.00
> Magellan Nav 5000 78.77
> Magellan 2000 50.50
> Magellan 310 61.00
> Magellan Pioneer 48.00
>
> anyway these, along with many for 100.00 and up, were listed on page
> 1 of 16. I didn't look past page one.
>
> So, might be worth a look. They also had many listings for cables
> and adapters.
>
> VF
>
> >
> >I would be interested in any discount or low prices people may know about
> >for a GPS.
> >Sincerely
>
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
I am looking at different GPS OEM receivers which are available and I was
wondering if anyone had any recomendations on something whcih was fun to play
around with... Motorola M12, Garmin series etc...
Thanks!
-=Randy Knutson
Do you Yahoo!?
New DSL Internet Access from SBC & Yahoo!
[noparse][[/noparse]Non-text portions of this message have been removed]
BG Micro has some Motorola Oncore units for $15, less antenna.
http://www.bgmicro.com/lmad.htm
Most all can be set to NMEA output which the STAMP can handle. Some Garmins
also have a 9600 baud ASCII mode.
>
> Hi:
> I am looking at different GPS OEM receivers which are available and I was
> wondering if anyone had any recomendations on something whcih was fun to
> play around with... Motorola M12, Garmin series etc... Thanks! -=Randy
> Knutson
>
>
Mike DeMetz N9GEZ
Elkhart, IN
mailto:n9gez@q...
http://www.qsl.net/n9gez
My readings match Earl's. You may want to double-check your wiring:
|
9 7 5 3 1 |
|
10 8 6 4 2 |
___________________|
+5 on pin 2, ground on pin 3
Some other stuff I've found in playing with this module:
- Use 9600, n, 8, 1, true for Motorola binary data msgs
- Use 4800, n, 8, 1, true for NMEA msgs
- You only need one ground connection between the module and
your Stamp--all "return" pins are already connected on the module
- Use exclusive or's to form the command checksums
Good info at:
http://www.motorola.com/ies/GPS/pdfs/ch1.pdf
...
http://www.motorola.com/ies/GPS/pdfs/ch6.pdf
I've got some very rough but working BS2 code that sets the date &
time, reads date & time, gets status, gets ID if anybody's
interested. May help anyone stuck getting started. This is a
_very_ nifty, Stamp-friendly gadget for the price. Here's hoping we
can find a decent (active) antenna that'll cost <= the module.
On 28 Sep 02 at 19:20, Earl Bollinger wrote:
> I have two units, but I am trying to locate a active antenna to go
> with them. My two units measure 1.10 K ohms to ground...
If anyone has gotten the gps recievers bg micro was selling to work could you
please email me. The reason I ask is because I ordered two units from them and
there is a direct short from VCC and GND on both units...
Thanks!
-=Randy Knutson
Nick Stedman wrote:Hi Ben,
This sounds very interesting. I've been looking for a way of communicating
with a desktop that is faster than RS232. I see your using the serial
command, but could you possibly use this usb chip with the Stamp to achieve
faster baud rates, perhaps in a bit banging routine?
Nick
on 27/9/02 6:28 AM, Ben at ben@l... wrote:
> Hi All,
>
> For those interested in implementing USB on a stamp, I have had success,
> finally, in creating a GUI app that talks to an FTDI chip connected to a
> Stamp.
>
> The solution was very simple in the end.
>
> Being a Mac user, the sample on my website is for the Mac. However, I'm
> sure that the same principles apply to Visual Basic (Virtual Com ports,
> etc).
>
> The Program was written in RealBasic which is basically the Mac equivalent
> of Visual Basic.
>
> This is so cool! It now means that I can write supporting Applications for
> the Mac (and Windows as RealBasic complies for either platform), for my
> stamp based USB projects (EG - USB based datalogger...).
>
> url: http://www.lennard.net.nz/ click on circuit ideas and then USB (under
> buses).
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[noparse][[/noparse]Non-text portions of this message have been removed]
them.
My two units measure 1.10 K ohms to ground. Did you have your multimeter set
too high on the resistance scale?
1k ohm to ground isn't out of line, that is only about 5 ma of current at
5v.
Original Message
From: Randy Knutson [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=mWZRCmb7eI09Gu30oJlx4w2OpZtOl2JMrEoYAug8gvHZklrWZNkHMehKCdgubjodAGjHv8iowZDP6R8]ken_ryder@y...[/url
Sent: Saturday, September 28, 2002 5:11 PM
To: basicstamps@yahoogroups.com
Subject: [noparse][[/noparse]basicstamps] gps
Hi:
If anyone has gotten the gps recievers bg micro was selling to work could
you please email me. The reason I ask is because I ordered two units from
them and there is a direct short from VCC and GND on both units...
Thanks!
-=Randy Knutson
See http://home.earthlink.net/~parkiss/GPS_GT.txt
Regards,
Steve
On 29 Sep 02 at 12:22, norman doty wrote:
> i would be interested in the starter code to my private email
> address if thats possible for you?
>
> normdoty@b... i keep this one un used to keep out all the
> sales Smile.
>
> thanks a lot.
> norm
>
>
>
> >From: "S Parkis" <parkiss@e...>
> >Reply-To: basicstamps@yahoogroups.com
> >To: basicstamps@yahoogroups.com
> >Subject: RE: [noparse][[/noparse]basicstamps] gps
> >Date: Sat, 28 Sep 2002 21:10:23 +0800
> >
> >Randy-
> >
> >My readings match Earl's. You may want to double-check your wiring:
> >
> > |
> > 9 7 5 3 1 |
> > |
> > 10 8 6 4 2 |
> >___________________|
> >
> >+5 on pin 2, ground on pin 3
> >
> >Some other stuff I've found in playing with this module:
> >
> > - Use 9600, n, 8, 1, true for Motorola binary data msgs
> > - Use 4800, n, 8, 1, true for NMEA msgs
> > - You only need one ground connection between the module and
> >your Stamp--all "return" pins are already connected on the module
> > - Use exclusive or's to form the command checksums
> >
> >Good info at:
> >http://www.motorola.com/ies/GPS/pdfs/ch1.pdf
> >...
> >http://www.motorola.com/ies/GPS/pdfs/ch6.pdf
> >
> >I've got some very rough but working BS2 code that sets the date &
> >time, reads date & time, gets status, gets ID if anybody's
> >interested. May help anyone stuck getting started. This is a
> >_very_ nifty, Stamp-friendly gadget for the price. Here's hoping we
> >can find a decent (active) antenna that'll cost <= the module.
> >
> >On 28 Sep 02 at 19:20, Earl Bollinger wrote:
> >
> > > I have two units, but I am trying to locate a active antenna to go
> > > with them. My two units measure 1.10 K ohms to ground...
> >
> >To UNSUBSCRIBE, just send mail to:
> > basicstamps-unsubscribe@yahoogroups.com
> >from the same email address that you subscribed. Text in the Subject and
> >Body of the message will be ignored.
> >
> >
> >Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
>
>
> _________________________________________________________________
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thats possible for you?
normdoty@b... i keep this one un used to keep out all the sales
Smile.
thanks a lot.
norm
>From: "S Parkis" <parkiss@e...>
>Reply-To: basicstamps@yahoogroups.com
>To: basicstamps@yahoogroups.com
>Subject: RE: [noparse][[/noparse]basicstamps] gps
>Date: Sat, 28 Sep 2002 21:10:23 +0800
>
>Randy-
>
>My readings match Earl's. You may want to double-check your wiring:
>
> |
> 9 7 5 3 1 |
> |
> 10 8 6 4 2 |
>___________________|
>
>+5 on pin 2, ground on pin 3
>
>Some other stuff I've found in playing with this module:
>
> - Use 9600, n, 8, 1, true for Motorola binary data msgs
> - Use 4800, n, 8, 1, true for NMEA msgs
> - You only need one ground connection between the module and
>your Stamp--all "return" pins are already connected on the module
> - Use exclusive or's to form the command checksums
>
>Good info at:
>http://www.motorola.com/ies/GPS/pdfs/ch1.pdf
>...
>http://www.motorola.com/ies/GPS/pdfs/ch6.pdf
>
>I've got some very rough but working BS2 code that sets the date &
>time, reads date & time, gets status, gets ID if anybody's
>interested. May help anyone stuck getting started. This is a
>_very_ nifty, Stamp-friendly gadget for the price. Here's hoping we
>can find a decent (active) antenna that'll cost <= the module.
>
>On 28 Sep 02 at 19:20, Earl Bollinger wrote:
>
> > I have two units, but I am trying to locate a active antenna to go
> > with them. My two units measure 1.10 K ohms to ground...
>
>To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
>from the same email address that you subscribed. Text in the Subject and
>Body of the message will be ignored.
>
>
>Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
_________________________________________________________________
Join the world’s largest e-mail service with MSN Hotmail.
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I have seen various references in old posts similar to that pasted
below (Dec 2002)
>>> Parallax even has some
>>> info on how to read / decode the ( GPS NMEA ) data with a Stamp
I have been to Parallax and got side-tracked with lot's of other
interesting articles there, but found nothing so far on GPS on their
site.
Searching NMEA returns nothing, and searching GPS just gives a
compass module.
Obviously I'm missing something, where should I be looking ? or has
it now gone.
Phil
20Brief.pdf
Its an article by Jon Williams on using a BS2P-24 with a Garmin GPS
along with Stamp software for reading and decoding. If the link fails
then go to Google, search for GPS, then go to advanced search and add
the extra words STAMP. Jon's article was about the third or fourth
hit.
--- In basicstamps@yahoogroups.com, "philiptuck" <follies@b...> wrote:
> Hello
> I have seen various references in old posts similar to that pasted
> below (Dec 2002)
>
> >>> Parallax even has some
> >>> info on how to read / decode the ( GPS NMEA ) data with a Stamp
>
> I have been to Parallax and got side-tracked with lot's of other
> interesting articles there, but found nothing so far on GPS on
their
> site.
> Searching NMEA returns nothing, and searching GPS just gives a
> compass module.
>
> Obviously I'm missing something, where should I be looking ? or has
> it now gone.
>
> Phil
> Go to this site, http://www.lls.se/~mux/micro/pdf/Aero%20GPS%
> 20Brief.pdf
> Its an article by Jon Williams on using a BS2P-24 with a Garmin GPS
> along with Stamp software for reading and decoding. If the link
fails
> then go to Google, search for GPS, then go to advanced search and
add
> the extra words STAMP. Jon's article was about the third or fourth
> hit.
Thanks Hal.
The article you pointed me to was the one I had found originally
<smile>, - but could not find the code download referred to in it.
Found it now, its listed under >>
"Column #83: Where in the World is my BASIC Stamp?"
at
http://www.parallax.com/html_pages/resources/nvcolumns/Nuts_Volts_Down
loads_V3.asp
for anyone else looking.
Phil
airplanes also...
On Fri, 2003-05-30 at 13:10, kenneth magers wrote:
> i have seen reference to people using gps stamp
> interfaces for model planes and now a rc truck
> please anyone working or developing anything of this
> nature becarefull gps is a usefull thing but in the
> wrong hand's it could be used for some bad thing's
> you don't have any way of knowing what someone want's
> with that information they might not have hit the
> towers in nyc if they didn't have that gps unit
>
> __________________________________
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--
Bill Marcy <wmarcy@s...>
interfaces for model planes and now a rc truck
please anyone working or developing anything of this
nature becarefull gps is a usefull thing but in the
wrong hand's it could be used for some bad thing's
you don't have any way of knowing what someone want's
with that information they might not have hit the
towers in nyc if they didn't have that gps unit
__________________________________
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Yahoo! Calendar - Free online calendar with sync to Outlook(TM).
http://calendar.yahoo.com
kenneth_m_73149@y... writes:
> i have seen reference to people using gps stamp
> interfaces for model planes and now a rc truck
> please anyone working or developing anything of this
> nature becarefull gps is a usefull thing but in the
> wrong hand's it could be used for some bad thing's
> you don't have any way of knowing what someone want's
> with that information they might not have hit the
> towers in nyc if they didn't have that gps unit
Good point!
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