David J Taylor wrote:
"unruh" wrote in message
news:yG90r.2430$ai4.2...@newsfe18.iad...
[]
Two of my Garmin 18 (not x) seem to have bit the dust after about 3
years. That is in Vancouver, where the winters can be pretty rainy, and
the units were unprotected.
It must be a kinder climate in Edi
On 02/19/2012 11:51 AM, Dave Hart wrote:
On Tue, Feb 14, 2012 at 18:52, Ron Frazier (NTP)
wrote:
I don't think that page mentions it, but I now have my unit outputting only
the GPZDA NMEA sentence, which seems to give the most accurate timing
information and the least jitter. I don't thin
"unruh" wrote in message
news:yG90r.2430$ai4.2...@newsfe18.iad...
[]
Two of my Garmin 18 (not x) seem to have bit the dust after about 3
years. That is in Vancouver, where the winters can be pretty rainy, and
the units were unprotected.
It must be a kinder climate in Edinburgh - my single GPS
On 2012-02-19, TomK wrote:
> FYI: Garmin OEM version 18x LVC 5M is a fun toy, for about 65.00USD.
> You have to solder a 9-pin D-sub RS232, but where I am the unit locks on
> 6-9 satellites, indoors. I have nine such units, some of which have
> lived outdoors and endured at least five years o
On Tue, Feb 14, 2012 at 18:52, Ron Frazier (NTP)
wrote:
> I don't think that page mentions it, but I now have my unit outputting only
> the GPZDA NMEA sentence, which seems to give the most accurate timing
> information and the least jitter. I don't think this sentence has any
> position informat
FYI: Garmin OEM version 18x LVC 5M is a fun toy, for about 65.00USD.
You have to solder a 9-pin D-sub RS232, but where I am the unit locks on
6-9 satellites, indoors. I have nine such units, some of which have
lived outdoors and endured at least five years of -10 F winters and +100
F summers,
Hi Paul,
I noticed the module you mentioned uses the Sirf III chipset. I've been
doing a good bit of experimentation with a GlobalSat BU-353 (no PPS)
which is also based on the same chipset. David Taylor was nice enough
to post my experience on his website from a series of dialogs we had.
Figure I might chime in with the gps unit I got and if your in Aust i
think its probably about the best deals i've seen that has a pps line
(theres also another one they have if you can do smd soldering thats
cheaper again).
http://www.twig.com.au/store/product_info.php?products_id=108&osCsid=148a
On 2012-02-13, Dave Hart wrote:
> On Sat, Feb 11, 2012 at 10:20, Terje Mathisen wrote:
>> unruh wrote:
>>> GEt the manual from Mediatex MTK NMEA Packet User Manual, which gives a
>>> far far more extensive set of nmea programming instructions for the
>>> chipset that Sure uses.
>>
>>
>> Does that
Dave Hart wrote:
> Unruh and Terje are talking about a MTK (I or II?) chipset.
Likely the MediaTek GPS chips (mtk.com.tw);
Although there have been others that copied / cloned
/ started with their protocol, even though they are
different GPS chips, their "MTK" protocol is compatible,
except
On Sat, Feb 11, 2012 at 10:20, Terje Mathisen wrote:
> unruh wrote:
>> GEt the manual from Mediatex MTK NMEA Packet User Manual, which gives a
>> far far more extensive set of nmea programming instructions for the
>> chipset that Sure uses.
>
>
> Does that one have more info than my current program
Hi Unruh,
Thanks for the tip. I don't yet own a Sure board. However, if I get one,
I'll be sure to look the manual up.
Sincerely,
Ron
On 02/10/2012 07:54 PM, unruh wrote:
GEt the manual from Mediatex MTK NMEA Packet User Manual, which gives a
far far more extensive set of nmea programming i
On 2012-02-11, Terje Mathisen <"terje.mathisen at tmsw.no"> wrote:
> unruh wrote:
>> On 2012-02-09, Ron Frazier (NTP) wrote:
>>> Assuming it's possible to program the Sure board for GPZDA, it would be
>>> interesting to see if doing that affects the performance you're seeing.
>>> Of course, if you
unruh wrote:
On 2012-02-09, Ron Frazier (NTP) wrote:
Assuming it's possible to program the Sure board for GPZDA, it would be
interesting to see if doing that affects the performance you're seeing.
Of course, if you're using PPS, the specific content of the NMEA
sentence may not matter as much.
On 2012-02-09, Ron Frazier (NTP) wrote:
> On 2/9/2012 4:18 AM, David J Taylor wrote:
>>> Hi David,
>>>
>>> I'm certainly considering that board. It looks very attractive. I'm
>>> going to have to read over the documentation page you've put
>>> together. It looks very comprehensive.
>>>
>>> Chr
On 2012-02-09, Ron Frazier (NTP) wrote:
> On 2/9/2012 1:34 AM, David J Taylor wrote:
>>> Hello all,
>>>
>>> While researching potential GPS modules to experiment with for PPS
>>> output, I discovered that SparkFun has quite a lot of modules, some
>>> of which have PPS and some of which don't. Y
On 2/9/2012 12:43 PM, Chris Albertson wrote:
On Thu, Feb 9, 2012 at 1:08 AM, Ron Frazier (NTP)
wrote:
OK, so I'm replying to my own message, what's strange about that? 8-)
VERY preliminary data, after running an hour with my USB GPS without PPS
outputting only GPZDA sentences, I'm gettin
Hi David,
I just finished reading your Sure board web page. That's a really good
write up. I now understand how you're getting the PPS signal. Could
you possibly share the rev level of the board, since, if they change the
design, you patch instructions may not work any more? Some boards do
On Thu, Feb 9, 2012 at 1:08 AM, Ron Frazier (NTP)
wrote:
> OK, so I'm replying to my own message, what's strange about that? 8-)
>
> VERY preliminary data, after running an hour with my USB GPS without PPS
> outputting only GPZDA sentences, I'm getting ~ +/- 5ms peak offsets of the
> computer clo
On 2/9/2012 4:18 AM, David J Taylor wrote:
Hi David,
I'm certainly considering that board. It looks very attractive. I'm
going to have to read over the documentation page you've put
together. It looks very comprehensive.
Chris Albertson said to get a unit which had:
1) - a stationary
Hi David,
I'm certainly considering that board. It looks very attractive. I'm
going to have to read over the documentation page you've put together.
It looks very comprehensive.
Chris Albertson said to get a unit which had:
1) - a stationary mode, or possibly only a stationary mode
OK, so I'm replying to my own message, what's strange about that? 8-)
VERY preliminary data, after running an hour with my USB GPS without PPS
outputting only GPZDA sentences, I'm getting ~ +/- 5ms peak offsets of
the computer clock vs GPS. I'm liking it so far. It initially looks
more stab
On 2/9/2012 1:34 AM, David J Taylor wrote:
Hello all,
While researching potential GPS modules to experiment with for PPS
output, I discovered that SparkFun has quite a lot of modules, some
of which have PPS and some of which don't. You can't necessarily
tell from the product page. You have
Hi Brent,
I spent a little while skimming over the 254 PAGE! pdf of the manual
from the SparkFun website. The device is certainly well documented. I
couldn't find where they specify the timing relationship you specify.
That's very interesting if it's consistent. I'm currently using a
Glob
Hello all,
While researching potential GPS modules to experiment with for PPS
output, I discovered that SparkFun has quite a lot of modules, some of
which have PPS and some of which don't. You can't necessarily tell from
the product page. You have to check the data sheet. You can go to
the
Found some additional info to share. See below.
On 2/8/2012 5:23 PM, Ron Frazier (NTP) wrote:
Hello all,
While researching potential GPS modules to experiment with for PPS
output, I discovered that SparkFun has quite a lot of modules, some of
which have PPS and some of which don't. You can'
Hello all,
While researching potential GPS modules to experiment with for PPS
output, I discovered that SparkFun has quite a lot of modules, some of
which have PPS and some of which don't. You can't necessarily tell from
the product page. You have to check the data sheet. You can go to
the
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