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Thread: how to interface computer w/ 2002 gmc envoy

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    Newbie psykiv's Avatar
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    how to interface computer w/ 2002 gmc envoy

    i know the odbII interface is a vpw, but how would i go about interfacing this to a computer... like to make the doors lock and unlock on the press of a button or something.. can anyone here help, or at least tell me if it is possible...

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    FLAC cproaudio's Avatar
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    I'm not too sure about using a PC to access the BCM and send commands to operate the electricals. I think all the OBD-II interfaces are for reading engine status. You can probably talk to gork about that as he has done I-bus interface with his beamer.
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    Raw Wave wizardPC's Avatar
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    what you need is a Parallel Port Relay Card and some software, and connect the relays to the door lock switches
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    Newbie psykiv's Avatar
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    Quote Originally Posted by wizardPC
    what you need is a Parallel Port Relay Card and some software, and connect the relays to the door lock switches

    and i would find this where... any help would be appreciated..

    ok.. i foudn the relay board here...

    http://electronickits.com/kit/complete/elec/ck1601.htm

    thanks to , but now where would i find the software?? and how would i go about installing this (or should i have a pro electrician do it??)

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    Raw Wave wizardPC's Avatar
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    that relay board you posted is the exact one I have.

    the software I wrote to control that board is over here:
    http://members.home.nl/peterwendy/programs/crc11.zip

    you dont need an electrician to install it, but someone who knows about basic electronics needs to do it. The relays are all basically SPDT switches, so just hook up your accessories to the relays instead of (or for door locks, in addition to) regular old switches
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  7. #7
    FLAC cproaudio's Avatar
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    Even with the relay control module, he still need to interface it to the OBD-II's K line. You need the relay control module to activate one of these
    http://www.bypasskit.com/gmdl.asp?cid=11
    With out the GMDL1, you need to do 5 wire door locks in driver, passanger and rear hatch then you need to do the neg trigger at the BCM under the rear seat to activate the rear passanger doors.
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  8. #8
    Newbie psykiv's Avatar
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    Quote Originally Posted by wizardPC
    that relay board you posted is the exact one I have.

    the software I wrote to control that board is over here:
    http://members.home.nl/peterwendy/programs/crc11.zip

    you dont need an electrician to install it, but someone who knows about basic electronics needs to do it. The relays are all basically SPDT switches, so just hook up your accessories to the relays instead of (or for door locks, in addition to) regular old switches

    wont work for iwndows xp ...

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