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Thread: GPS receiver with external antenna?

  1. #51
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    Mar 2008
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    Cool

    Quote Originally Posted by bes51659 View Post
    [media]http://web.comhem.se/mulle1/progress_3.jpg[/media]

    Proto 1 fully assembled and I think I've found all design errors. Next week I will make my first tour with it in my car. Writing code for the 8051 at the moment!

    Guys I have been trying to do this for a long time and have been watching over the details here for some time.

    Just an update the Lassen DR+GPS thing is now available in Ebay for $35 from seller "oh2gma".

    check this out, you can get this cheap. If you are looking out for this thing to complete and work you can try your luck to get the board now cheap.

    http://cm.ebay.com/cm/ck/1065-29392-...m=320241899819

    cheers

  2. #52
    Maximum Bitrate bes51659's Avatar
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    Vasastaden, Stockholms Län, Sweden, Sweden
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    Very good price indeed!! I think I paid 50 for my unit. (And 60$ for the gyro that you still need)

    I have 8 pcb's that are left overs from the two prototypes that I've built. I will build them into GPS units without the cpu and without the case and _maybe_ without GPS and gyro. With all interface electronics (regulators, op's and some passive components). I should be able to make 8 "down to the bone" units like that for $100 + p&p. (pcb was a little over $50. Gyro op-amp was $18)

    PM me if you are interested in such a kit.

  3. #53
    Maximum Bitrate bes51659's Avatar
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    It works!
    It was quite fun at first to see the Kalman filters slowly adjust to tacho and gyro ratio. It overreacted and put me straight into buildings :-)

    I did not loose GPS position once, even if I was off position sometimes. Aspecially at beginning in thunnels before calibration was done.

    I will make U-tube tomorrow.

    With antenna on roof, and with pcb in alu-box I think it will work even better!

    [media]http://web.comhem.se/mulle1/first_pcb.jpg[/media]

    Connected to IBus and power only, speed and direction is decoded from communication and has not got to be wired separately.
    The second little pcb is an IBus Resler interface. I wanted to log IBus traffic with the laptop too.

    [media]http://web.comhem.se/mulle1/first_antenna.jpg[/media]
    OEM antenna

    [media]http://web.comhem.se/mulle1/first_fix.jpg[/media]

    [media]http://web.comhem.se/mulle1/First_laptop.jpg[/media]

    Edit:
    Cannot find the #*% firewire cable do download the video... I will buy one on monday.

  4. #54
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    Amazing :-p That's great... Look forward to se the youtube video :-)

  5. #55
    Maximum Bitrate bes51659's Avatar
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    Finally a YouTube Demo Video

    First time I've made a Video and published it on youtube. Next time I will use a script, a voice reading from script, and a camera man. And maybe a driver :-)

    GPS DR Demo

    http://www.youtube.com/v/7CWpugLGUjU

    [media]http://web.comhem.se/mulle1/gpsmodule.jpg[/media]

    This is it, fully assembled.

    Extra connector for inputs when used in non-BMW car witout IBus.

    Mount angles can be put inwards instead of outwards

  6. #56
    Maximum Bitrate bes51659's Avatar
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    Project done!

    BMW IBus power controller for USB, PC, rearview camera, power amp and LCD panel

    I close this thread now to be continued here

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