On Tue, 03 Aug 2010 11:55:13 +0200 Ed Kapitein <e...@kapitein.org> wrote:
> On Tue, 2010-08-03 at 00:07 +0200, omcomali....@porcupinefactory.org > wrote: > > On Mon, 02 Aug 2010 21:47:18 +0200 > > Ed Kapitein <e...@kapitein.org> wrote: > > > > > On 08/02/2010 09:18 PM, omcomali....@porcupinefactory.org wrote: > > > > Hi Ed, > > > > > > > > Congratulations for capturing the beautiful GPS track. Could you share > > > > how you managed to do it? Did you wait for the plane to start or did > > > > you get on the plane with a GPS fix? > > > > > > > > Both times I tried, the Freerunner lost fix just before the start. > > > > > > > > Cheers, > > > > rhn > > > > > > > > On Mon, 02 Aug 2010 20:36:23 +0200 > > > > Ed Kapitein <e...@kapitein.org> wrote: > > > > > > > > > > > ><SNIP>< > > > > > > Sure, > > > > > > Actually i took two approaches, on the trip from holland to the USA i > > > used an external gps receiver [1] and used gpsd on the FR with an > > > bluetooth connection. > > > I did had a fix just prior to take off. > > > ( i did not hear the announcement "all electronic equipment must be > > > switched off now", a sudden attack of deafness i guess... ;-) ) > > > The log is simply gpspipe -r > /some/file , nothing fancy there. > > > I do switch log files every 500Mb, so the files don't get too big for > > > rsync to be transfered over a not so reliable gprs connection at a later > > > time. > > > > > > At the very end of our holiday i lost my gps receiver ( i left it in an > > > rental RV...) > > > so on the trip from the USA to holland i jammed my fr between the window > > > and the "shade" ( a plastic curtain that covers the window to make it > > > dark ) > > > if you remove the back cover of the FR it fits even better. > > > I had a fix prior to take off, but i lost it after take off when i > > > checked the FR. > > > It seems the FR really needs to be close to the window to obtain and > > > keep a fix > > > But it did get a new fix after i put the FR against the window again and > > > after studying the GPX logs at home is noticed that i had a dgps fix > > > most of the time, so WAAS or EGNOS are really working on the FR. > > > > > > I also noticed that the elevation seems to be working too, i was on +/- > > > 10000 > > > meter and that seems right. > > > ( holland is flat and i never could use the elevation before ;-) ) > > > > > > Hope this answers your question? > > > > > > Kind regards, > > > Ed > > > > > > [1] > > > http://www.gpsshop.nl/product/49515/haicom-hi-408bt-bluetooth-gps-ontvanger.html > > > > > > > > > > Thanks, this was a really exhaustive reply. I forgot to ask whether it's > > possible to get a fix after takeoff, but you answered even that question ;) > > > > It seems that my problem was hiding the Freerunner underneath some cover on > > my lap. Next time I'm going to try the shade trick and a deafness strike > > (they didn't mind me taking photos, so I guess it's safe). I'll also try to > > see if losing the fix is related to the start of the engines. > > > > What program did you use to capture the log files? I'm always using > > TangoGPS, and I never saw any DGPS information in it. I didn't even know > > SHR (am I guessing right?) supported DGPS! > > > > Cheers, > > rhn > > > > _______________________________________________ > > Openmoko community mailing list > > community@lists.openmoko.org > > http://lists.openmoko.org/mailman/listinfo/community > > > The log is simply gpspipe -r > /some/file , nothing fancy there. > I am using gentoo, with the framework fso-gpsd. the nmea log can be > converted later with gpsbabel into a gpx format. the gpx file will show > the kind of fix you have 2d, 3d or dgps. > > Kind regards, > Ed > > Thank you! I thought gpspipe was only used for external GPS units, that's why I asked. Cheers, rhn _______________________________________________ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
