PS2 Keyboard Emulator need help

Discussion in 'The Projects Forum' started by LostInSpace, Mar 16, 2010.

  1. LostInSpace

    Thread Starter New Member

    Mar 16, 2010
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    I have starte a project to emulate a ps2 keyboard

    1. there most not be any software install on the pc at all

    2. key press skut be random time




    my first was build with a standart usb beyboard
    with work with 8 key by 8 transistor controled by a PICAXE processor and it work very good

    now i want to expand to use all key on the keyboard

    to that i need a lot off Multiplexer & transístor

    do any know a better idea
     
  2. beenthere

    Retired Moderator

    Apr 20, 2004
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  3. LostInSpace

    Thread Starter New Member

    Mar 16, 2010
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    all like to that side, and i'm not the big programmer ;(

    1 off my idea is still to use the PICAXE procossor

    bot is the best way to control 100 transistor that each have a function as KEY
     
  4. beenthere

    Retired Moderator

    Apr 20, 2004
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    You might be better off using keyswitches arranged like a keyboard, and have the PICAXE poll for key press events and generate the correct codes to go to the host computer. This sounds a lot like reinventing the wheel.
     
  5. LostInSpace

    Thread Starter New Member

    Mar 16, 2010
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    that mean a mecanic wheel turn around ?

    i was thinking to build op a 3d circuit layout both it take very long time ;(
     
  6. retched

    AAC Fanatic!

    Dec 5, 2009
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    No, reinventing the wheel is a saying for 'Doing something that has already been done, and done well'

    in other words, there is no need to re-do all of the work that keyboard designers have already done.

    There are ICs that will take the your keypad signals and convert them to addresses and report them via USB. So you chip will recieve a &04f (not real) when a key is pressed.

    So when the picaxe recieves the &04f it will convert it to a letter in software:

    Code ( (Unknown Language)):
    1. If $keyinput = "&04f" then character$="R"
    2. lcdout "R"
     
  7. LostInSpace

    Thread Starter New Member

    Mar 16, 2010
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    I use the PICAXE as controller chip where all the key sequence come from

    and just 1 hours ago i find maybe the best solution for the project :)

    http://radovan.org/EasyInput/index.htm
     
  8. retched

    AAC Fanatic!

    Dec 5, 2009
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    There you go. That looks like a winner. It is USB compliant, and it acts like a keyboard.
     
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