Results 1 to 7 of 7

Thread: Hacking a Keyboard Matrix

  1. #1
    Newbie
    Join Date
    Jul 2008
    Posts
    5

    Hacking a Keyboard Matrix

    Hi! I need a 8 key input device with the enter key in a row, like the numbers above the letters on a keyboard.
    Like this:

    I broke apart an old ps/2 keyboard hoping I could pick and choose and rearrange the keys, but the matrix looks intertwined and I'm sure snipping any of the matrix will bust it.

    My project isn't for a car, but this kind of knowledge would only be found in improv hackers like you guys. I'm building a internet radio streamer inside an antique radio. I made a batch file to load winamp stations when a key then enter key is selected. Just need to make the input device. The number keys (1-9) are the perfect spacing to fit into the radio. So I'd like to use those 1-8 and then replace 9 with the enter key.

    Any suggestions? Thanks in advance.

  2. #2
    Newbie
    Join Date
    Jul 2008
    Posts
    5
    As an update, my program no longer needs the enter key. So I just need the numbers 1-9, any way to successfully seperate them? Here is the keyboad matrix:

  3. #3
    Newbie
    Join Date
    May 2006
    Posts
    35
    Just follow the lines that go to from the buttons to the pins on the controllor board, really simple, just take a pen and make a line all the way so you can see it easier.

  4. #4
    Admin. Linux loser.
    Auto Apps:loading...
    Bugbyte's Avatar
    Join Date
    Sep 2004
    Location
    Corning, NY
    Posts
    7,359
    Blog Entries
    2
    Alternatively, you can use an IPAC keyboard emulator. They go for about $40 bucks. You just connect the buttons to the terminals on the board and you can program the IPAC to generate any key or combination you want.
    Quote Originally Posted by ghettocruzer View Post
    I was gung ho on building a PC [until] just recently. However, between my new phone having internet and GPS and all...and this kit...Im starting to have trouble justfiying it haha.
    Want to:
    -Find out about the new iBug iPad install?
    -Find out about carPC's in just 5 minutes? View the Car PC 101 video

  5. #5
    Newbie
    Join Date
    Jul 2008
    Posts
    5
    I didn't understand how they work, apparently when a upper matrix dot contacts a lower matrix dot the controller sees two unique lines crossed and generates a letter. So if you figure out which two lines need to cross to generate a '1' you can make a switch manually cross those lines. I'll post the finished product when I find some contact switches. Thanks for the replies!

  6. #6
    Newbie Dingo509's Avatar
    Join Date
    Aug 2005
    Location
    Washington, USA
    Posts
    45
    Why not just try a small USB number pad? like this...


    Seems to me hacking this would be easier than a full keyboard. And i have seen them at places like walmart for under 10 bucks.

    Dingo
    Progress: Installed and working. Needs some cleanup and trim work done. now for complete integration.
    91 Jeep Cherokee 8" custom lift, 3/4 ton running gear 36" swampers, Snorkel, Onboard air, Onboard Shower. Now with in dash PC!

  7. #7
    Newbie
    Join Date
    Jul 2008
    Posts
    5
    It's true, but I had a spare keyboard laying around. Plus I'd prefer to use PS/2 and I think those number pads usually use USB. Thanks for the suggestion though.

Similar Threads

  1. iGo Stowaway USB Keyboard
    By monkeyracer in forum The Review Palace
    Replies: 18
    Last Post: 04-16-2008, 11:28 AM
  2. Need assistance improving boot time - Windows Xp - 12s
    By hidddenh in forum Operating System Optimization
    Replies: 14
    Last Post: 02-12-2008, 05:15 AM
  3. Hardware Review: Logitech DeNovo Edge Keyboard
    By fluffy2097 in forum The Review Palace
    Replies: 0
    Last Post: 06-05-2007, 08:25 PM
  4. ok got an old keyboard need help hacking it up
    By ricecrispy210 in forum Input Devices
    Replies: 4
    Last Post: 08-11-2006, 02:13 AM
  5. Hacking a keyboard?
    By Stine161 in forum General Hardware Discussion
    Replies: 13
    Last Post: 04-15-2002, 06:55 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •