Re: Nokia N900

2010-05-17 Thread David Rysdam
On 05/16/2010 09:56 PM, Peter Dobratz wrote:
 This may be stating the obvious, but it tripped me up when I was
 trying out my Garmin Etrex.  You have to be still in order to get a
 fix.  

All of my tests had the GPS sitting on the ground or on a bench.  At the
very most, I picked it up as in the last test, but that didn't move it
more than a meter or so.

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Re: Nokia N900

2010-05-17 Thread Tyson Sawyer
On Sun, May 16, 2010 at 8:42 PM, David Rysdam da...@rysdam.org wrote:
 I was outside, I was still WiFi'd in to the house so it was using AGPS.
  Result: Invalid.

[...]

 Conclusion: The N810 GPS hardware and/or software definitively sucks.

Though I agree that the N810 is not as good a GPS is most others, once
the AGPS package had bee installed my experience was much better than
what you are reporting.  You have not indicated if you had the AGPS
package installed.  Last I knew, it was not a standard package.  If
you didn't make a point to install it, its not there.  Without it, it
is my impression that you always get a cold start.

Response to some other comments:

It is well documented that GPS's typically assume that they are
restarted near where they where last used.  The documentation of every
GPS I have ever bought says that if you turn it off and then transport
it a long distance before turning it on again, it will take much
longer to get a fix.  The N810 without the AGPS package seems not able
to do even this simple trick.

Though I've never seen any problem with slow movement,  I have seen
(esp. on the N810) that highway speeds can hinder an initial fix.

Cheers!
Ty

-- 
Tyson D Sawyer

A strong conviction that something must be done is the parent
of many bad measures.   - Daniel Webster

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Re: Nokia N900

2010-05-17 Thread David Rysdam
On 05/17/2010 09:39 AM, Tyson Sawyer wrote:
 On Sun, May 16, 2010 at 8:42 PM, David Rysdam da...@rysdam.org wrote:
 I was outside, I was still WiFi'd in to the house so it was using AGPS.
  Result: Invalid.
 
 [...]
 
 Conclusion: The N810 GPS hardware and/or software definitively sucks.
 
 Though I agree that the N810 is not as good a GPS is most others, once
 the AGPS package had bee installed my experience was much better than
 what you are reporting.  

But only if you start up near a WiFi point, I assume.  When I'm driving
around, this is rarely the case.  And even if it were the case, 4
minutes seems like kind of a long time to wait when my Garmin can do it
in around 10-20 seconds.

 You have not indicated if you had the AGPS
 package installed.  Last I knew, it was not a standard package.  If
 you didn't make a point to install it, its not there.  Without it, it
 is my impression that you always get a cold start.

I'm pretty sure it's installed.  I definitely had it installed at one
point.  When I read that it would improve the GPS performance, I jabbed
the install button before I even got to the part about but you need
to be connected to the internet.

The only reason I'm not sure it's installed is I had to reinstall the OS
at one point.  However, the backups save your installed app list, so it
probably went back on.  And the data seem to back that up (heh): there's
the vast difference in fix times between when the network was and wasn't
available.
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Re: Nokia N900

2010-05-17 Thread Tyson Sawyer
On Sun, May 16, 2010 at 11:04 PM, Benjamin Scott dragonh...@gmail.com wrote:
  Unrelated to the My GPS is faster than your GPS discussion, but
 relevant to the Linux friendliness question:

  It has an apparently standard USB mini B port on the back, which
 serves for both power input (to charge the battery) and PC attachment
 (for software/data updates).  One of the first things I did was (of
 course) plug it into my Linux home PC (Debian 5.0.4, kernel 2.6.26-2).
  The GPS display showed the Garmin logo and a picture of itself
 plugged into a computer, but Linux was indifferent.  Looking at the
 kernel log, it appeared the GPS wasn't playing nice.  I either saw
 nothing at all, or just over-current change on port.  I noticed that
 if I plugged it into the USB hub built-in to my Dell LCD, the hub
 would apparently reset, as the kernel would re-detect my mouse and
 flash card reader.

Reading your entire message, it seems possible that Window's didn't
work without a driver update and neither were able to work until it
had been plugged in for a while and recharged.  It may be that it
draws too much power when the batteries are low?  Removing the
batteries so that it wasn't charging, just powering the electronics,
might have made it work right off under Linux.

  Updating the firmware purportedly requires installing some
 proprietary software from Garmin.

The instructions at this address _might_ work for your Garmin.
However, they are specific to the Colorado:

http://garmincolorado.wikispaces.com/Versions#Colorado Software
Versions-Updates using gcd files

There are links there for some other Garmin GPS's and a lot of
information that is likely useful for more than just the Colorado.

Cheers!
Ty


-- 
Tyson D Sawyer

A strong conviction that something must be done is the parent
of many bad measures.   - Daniel Webster

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Re: Nokia N900

2010-05-17 Thread Tyson Sawyer
On Mon, May 17, 2010 at 9:47 AM, David Rysdam da...@rysdam.org wrote:
 On 05/17/2010 09:39 AM, Tyson Sawyer wrote:
 On Sun, May 16, 2010 at 8:42 PM, David Rysdam da...@rysdam.org wrote:
 I was outside, I was still WiFi'd in to the house so it was using AGPS.
  Result: Invalid.

 [...]

 Conclusion: The N810 GPS hardware and/or software definitively sucks.

 Though I agree that the N810 is not as good a GPS is most others, once
 the AGPS package had bee installed my experience was much better than
 what you are reporting.

 But only if you start up near a WiFi point, I assume.  When I'm driving
 around, this is rarely the case.  And even if it were the case, 4
 minutes seems like kind of a long time to wait when my Garmin can do it
 in around 10-20 seconds.

In my case, we were sometimes out in the woods not near any WiFi
signal and typically had much better performance than 4 minutes.  The
AGPS package at least knows how to remember where it was last and use
that to help get it started.   I think that the use of last known
point is good for something on the order of 100 miles.

 You have not indicated if you had the AGPS
 package installed.  Last I knew, it was not a standard package.  If
 you didn't make a point to install it, its not there.  Without it, it
 is my impression that you always get a cold start.

 I'm pretty sure it's installed.  I definitely had it installed at one
 point.  When I read that it would improve the GPS performance, I jabbed
 the install button before I even got to the part about but you need
 to be connected to the internet.

 The only reason I'm not sure it's installed is I had to reinstall the OS
 at one point.  However, the backups save your installed app list, so it
 probably went back on.  And the data seem to back that up (heh): there's
 the vast difference in fix times between when the network was and wasn't
 available.

You will not get me to claim or defend that the N810 GPS is as good at
getting a fix as other GPSs.  It is not.  However, my experience was
clearly better than yours and once it has a fix, it does seem to be
just as good.

However, you might double check that AGPS is installed and configured.
 There may have been some relevant setup.  Since the device belongs to
my fiancee, I didn't do the install/setup, but I think I recall there
being a setup/config step/page.

Cheers!
Ty

-- 
Tyson D Sawyer

A strong conviction that something must be done is the parent
of many bad measures.   - Daniel Webster

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Re: Nokia N900

2010-05-17 Thread Benjamin Scott
On Mon, May 17, 2010 at 9:48 AM, Tyson Sawyer ty...@j3.org wrote:
 It may be that it draws too much power when the batteries are low?

  Possible.  I'll let the battery run down some time and see if that
then hinders USB connectivity.

 Removing the batteries so that it wasn't charging ...

  The battery in this model are not (easily) removable.

 The instructions at this address _might_ work for your Garmin.
 However, they are specific to the Colorado:

 http://garmincolorado.wikispaces.com/Versions#Colorado Software
 Versions-Updates using gcd files

  I'm sure the Colorado software won't work with this Nuvi; they're
completely different things -- different form-factors, years apart in
release to market, and the release numbers are way different.  :-)
The idea of just copying a file is intriguing and would be great, but
without a link to the Nuvi software I'm SOL.  Still, you've given me
Google fodder; thanks.  :)

-- Ben

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