Voltage Generated By each Key Press

Discussion in 'The Projects Forum' started by aditya369007, Aug 27, 2014.

  1. aditya369007

    Thread Starter New Member

    Jul 24, 2014
    15
    0
    Hi
    I wanted to calculate the voltage that each key press that is generated by our keyboard. Naturally I can always connect a voltmeter between the both data lines(D1, D2) by opening up an USB Keyboard. I also read that each key press generates an ASCII code that goes for processing. But im concerned with the voltage, so is there any method by which i can obtain these voltages, because I really cant resort to clipping up the wires and connecting it and checking it for voltages.
    Or is there already any such result available on the internet?
    Thanks Guys ur help is really appreciated.
     
  2. BobTPH

    Active Member

    Jun 5, 2013
    785
    114
    Measuring a voltage is meaningless, it will always read 3.3V or -3.3V. The signal is digital, it is the sequence of signals that determine what key has been pressed.

    Bob
     
  3. aditya369007

    Thread Starter New Member

    Jul 24, 2014
    15
    0
    Hmm yes if keyboard as stated as a digital device, then my question is meaningless. Thanks for correcting me
     
Loading...