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Hacking the front panel buttons

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  • Hacking the front panel buttons

    It seems like a waste to have all those buttons on the LCD, just to adjust the LCD screen.

    This modification rewires the existing keys on the LCD to work as USB keyboard functions.

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    There are six buttons required to control FrontRow.
    ESC, Enter, Up, Down, Left, Right.

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    So I hacked up a USB keyboard and rewired the needed keys.

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    I opened the keyboard and traced around the contacts I need.

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    I then used a multimeter to trace the keys back to the keyboard connector.

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    I mapped out the needed wires and preped the keyboard controller.

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    I opened up my Lilliput and removed the keypad PCB.
    I then carefully cut the traced on each side of the switch.
    This was actualy pretty extensive, as some traces had to be re-routed for the other parts of the circuit to work.

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    I then soldered wires on to each button.
    Some buttons shared a signal.

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    I then ran the wires out one of the button vents of the LCD.

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    The keyboard control panel was then screwed to the back of the LCD.
    I wanted to do it all internal but there isn't enough room.

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    The completed modificaiton.
    Now I have some quick buttons that I can hit without taking my eyes off the road.
    I can still do any needed adjustments on the LCD via the remote control.

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    I have my touchscreen, wired to my Mac Mini.
    Photos on that here:
    http://www.flickr.com/photos/zapwiza...7594054134962/

  • #2
    Wow, nice job by you. Lotta work, tho.
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    • #3
      where did you route the buttons to so that you can hit them without taking your eyes off the road?
      Sell me your stuff.. please see what i'm looking to buy
      http://mp3car.com/vbulletin/showthread.php?t=75182

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      • #4
        Fooshizn1x, read the thread.

        The LCD is installed into my Dash, I hacked the existing buttons on the LCD to a USB keyboard controller.

        Since they are physical buttons, not software touch-buttons, you can press them the same as your A/C or old radio buttons without taking your eyes off the road.

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        • #5
          not bad. I was thinking of doing something similar so that it would control volume or something... but decided it wasn't worth bothing so I just fiberglassed them over when doing the install.

          good work though.

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