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  • controller cards?

    quick question, does the controler card on home made systems ONLY control the touch aspect of a screen or does it also provide the VGA sgnal?

    i.e. do you need a controller card as well as a video card for a touchscreen application? Or does the controller card provide both?

    Any help is appreciated

    Thanks!

  • #2
    There are 2 different types of controllers:

    1)Touch Screen Controllers- they take the signal from the screen membrane and convert it to a serial, ps2 or usb signal, which looks like a pointing device to the computer.

    2)LCD controller cards- the output the correct video signal to the lcd screen.

    i dont know if you need a regular video card if youre using an lcd driver card, but i just wanted to clear up the difference between touch controllers and lcd controllers.
    Project AutoBoxen: Coming along, almost ready to hook up in the car.
    Celeron 500, 192mb ram, 8gb hdd, other stuff.
    '91 Mazda 626: Its free, so ill use it.

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    • #3
      There are also LCD controller cards WITH a touchscreen controller included.
      an example of one is the datalux board.
      Shades

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      • #4
        For further clarification, which part needs the 5V - the LCD or the controller?

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        • #5
          either one could use 5v. It depends on the model. although i think the backlight on the lcd would prolly take 12v.
          Project AutoBoxen: Coming along, almost ready to hook up in the car.
          Celeron 500, 192mb ram, 8gb hdd, other stuff.
          '91 Mazda 626: Its free, so ill use it.

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