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Thread: gps + kismet. terrible gps delay of 10sec

  1. #1
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    Arrow gps + kismet. terrible gps delay of 10sec

    hi
    i was often wondering, why some APs logged with kismet gps are so imprecise in the position on the map.

    I now figured that the GPS is delayed about 10 seconds.

    Any idea what could be the reason for that and how to fix that?


    here is how i start my bluetooth gps on bt4b:

    -----
    hciconfig hci0 up
    hciconfig cc 00:xx:.....
    rfcomm connect /dev/rfcomm0 00:xx:.....
    gpsd /dev/rfcomm0
    -----

    Any suggestions ppl?

  2. #2
    My life is this forum Barry's Avatar
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    Quote Originally Posted by dani0101 View Post
    hi
    i was often wondering, why some APs logged with kismet gps are so imprecise in the position on the map.

    I now figured that the GPS is delayed about 10 seconds.

    Any idea what could be the reason for that and how to fix that?


    here is how i start my bluetooth gps on bt4b:

    -----
    hciconfig hci0 up
    hciconfig cc 00:xx:.....
    rfcomm connect /dev/rfcomm0 00:xx:.....
    gpsd /dev/rfcomm0
    -----

    Any suggestions ppl?
    I know a direct wire connection with a gps has a 1 to 2 second delay, bluetooth just adds to the delay.
    Of course, if you really wanted to have some fun, go to Wal-Mart late at night and ask the greeter if they could help you find trashbags, roll of carpet, rope, quicklime, clorox and a shovel. See if they give you any strange looks. --Streaker69

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    I got almost none delay on my PDA with the same bluetooth GPS (max. 2sec)

  4. #4
    My life is this forum Barry's Avatar
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    Quote Originally Posted by dani0101 View Post
    I got almost none delay on my PDA with the same bluetooth GPS (max. 2sec)
    Weird. Not sure why then. Does the gps have the ability to use usb?
    Of course, if you really wanted to have some fun, go to Wal-Mart late at night and ask the greeter if they could help you find trashbags, roll of carpet, rope, quicklime, clorox and a shovel. See if they give you any strange looks. --Streaker69

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    i does not have usb. just bluetooth.

    Are there any gps setting i could set. like rate etc.? maybe this will help

  6. #6
    My life is this forum Barry's Avatar
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    Quote Originally Posted by dani0101 View Post
    i does not have usb. just bluetooth.

    Are there any gps setting i could set. like rate etc.? maybe this will help
    I think it's the bluetooth connection and not the gps itself. Though really ten seconds isn't really that bad, unless you're wardriving at 100mph.
    Of course, if you really wanted to have some fun, go to Wal-Mart late at night and ask the greeter if they could help you find trashbags, roll of carpet, rope, quicklime, clorox and a shovel. See if they give you any strange looks. --Streaker69

  7. #7
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    It maybe an issue with gpsd. Reading this may help: http://gpsd.berlios.de/faq.html#kismet
    Thorn
    Stop the TSA now! Boycott the airlines.

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    are there any alternatives to gpsd for kismet?

  9. #9
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    Quote Originally Posted by dani0101 View Post
    are there any alternatives to gpsd for kismet?
    Try to find an older version. I think 9.10 or something like that.
    Of course, if you really wanted to have some fun, go to Wal-Mart late at night and ask the greeter if they could help you find trashbags, roll of carpet, rope, quicklime, clorox and a shovel. See if they give you any strange looks. --Streaker69

  10. #10
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    unfortunately i got problems compiling the older GPSD versions. No problem compiling the new version on bt4b :\

    btw.
    any suggestions how to check the GPS delay without moving?
    dont really want move with my laptop on the street every time i wanna check the gps delay problem.

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