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Thread: Steering Wheel Controls (CANBUS)

  1. #1
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    Steering Wheel Controls (CANBUS)

    I've been searching about solutions for reading the CANBUS signals from steering wheel controls (primarily volume up/down, track forward/reverse) and interfacing into the CarPC. I have found a few USB/CANBUS transceivers and thought I might be able to use a program like Girder to do the interfacing, but I know very little about CANBUS signals, so I was hoping for some expert insight.

    I haven't come across any real definitive threads on this, either.

  2. #2
    Low Bitrate rtgree01's Avatar
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    I've tapped into my Dodge Charger's CANBUS. I started using a CANUSB from Lawicel... but then I moved on to a microcontroller development kit from mBed.

    I didn't do any research into how to work with Girder.... I just wrote a RideRunner plugin and made it work that way...

    good luck!

  3. #3
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    Cool...thanks for the insight.

  4. #4
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    would you mind sharing your RideRunner canbus plugin?

  5. #5
    Low Bitrate rtgree01's Avatar
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    @that_kid
    What car do you want to use this in? what hardware are you going to use? My plugin is pretty specific to my setup... the mBed microcontroller actually converts all the CANBUS messages into a couple of ethernet messages. Do you want code? or just the plugin?

  6. #6
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    I'll be using this in a VW Touareg with and arduino and canbus shield. I'll need the code too since i'll have to taylor it to my canbus and arduino setup. Thanks

  7. #7
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    hi rtgree01

    i wondered if you could help me, you seem to have gone down the same road as i am going, i have a 2004 range rover [bmw ibus system] and have got my pc project almost done,i have ride runner. now i have a 2011 steering wheel with the new style controls but they are canbus, i see there are a few ways or getting it to work and that you have it working on your system, so if you could give me a bit of advice that would be great
    thanks daveo

  8. #8
    Low Bitrate rtgree01's Avatar
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    daveo1000....

    I found a website dedicated to hacking the CANbus on Chrysler vehicles..... That site has a bunch of CAN bus recordings... I looked at all the messages that had already been decoded... and tried to figure a few more out.

    And as I said earlier, I figured out how to tap into my car's CAN bus and used the Lawicell CAN2USB device to make some more recordings. Like the guy from canhack.org, I added the feature to add a marker to the recordings for when something is supposed to have happened... so when I press a steering wheel button, a marker gets entered by pressing the space button on the keyboard.

    The other technique I used was to look at how often a message occurs.... If a message only happens once or twice during the recording, there is a good chance that the message corresponds to something you've done... Really it is just looking for patterns.... If you can find a pattern, you'll do well....

    Ryan

  9. #9
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    hi, thanks for the reply..what device do you use to talk with the canbus and is it with your pc or does it work on its own..
    thanks again..

  10. #10
    Low Bitrate rtgree01's Avatar
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    mbed.org

    i'm using the mbed NXP LPC1768

    Ryan

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