Shop OBEX P1 Docs P2 Docs Learn Events
4X4 keypad. — Parallax Forums

4X4 keypad.

ArchiverArchiver Posts: 46,084
edited 2003-12-10 19:03 in General Discussion
anyone know how to interface it ?

anyone have the source code or link?

Comments

  • ArchiverArchiver Posts: 46,084
    edited 2003-12-10 11:36
    Hi,

    The MEM Key is a fully programmable keypad encoder. It can decode key
    matrixes of up to 4 columns by 5 rows. The rows and columns can be
    programmed to match the row-column configuration of any off the shelf
    keypad.

    http://www.warburtech.com/Modules/MEM%20Key/MEM%20Key.htm

    Please let me know if you have any questions.

    Best regards,

    Russell Warburton
    email: russell@w...
    website: http://www.warburtech.com
    telephone: +44 (0)7814 044 754
    Original Message
    From: "benzlim83" <benzlim83@y...>
    To: <basicstamps@yahoogroups.com>
    Sent: Wednesday, December 10, 2003 9:12 AM
    Subject: [noparse][[/noparse]basicstamps] 4X4 keypad.


    > anyone know how to interface it ?
    >
    > anyone have the source code or link?
    >
    >
    > To UNSUBSCRIBE, just send mail to:
    > basicstamps-unsubscribe@yahoogroups.com
    > from the same email address that you subscribed. Text in the Subject and
    Body of the message will be ignored.
    >
    >
    > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
    >
    >
    >
  • ArchiverArchiver Posts: 46,084
    edited 2003-12-10 13:43
    Daer Benz

    please, look for into the Parallax web site, in Nuts and Volts number 4
    download and you can find the topology to controller the 4x4 keypad and LCD
    with one chip MM74C92N.......

    If you have any problem to look for this file, please let me know

    best regards

    Atentamente.
    Ing. Damian Trujillo G.
    RIESE & CIA, S.A.
    Caracas - Venezuela
    ) +58-212-7934266/4377
    7 +58-212-7940791/0908
    + dtrujillo_riese@c...
    Original Message

    From: basicstamps@yahoogroups.com
    Date: Mi
  • ArchiverArchiver Posts: 46,084
    edited 2003-12-10 17:07
    --- In basicstamps@yahoogroups.com, "benzlim83" <benzlim83@y...>
    wrote:
    > anyone know how to interface it ?
    >
    > anyone have the source code or link?

    I have used this technique before, and it works well. Goto url :
    http://www.tech-diy.com/keypad.htm and check it out

    Geoffrey Lewis
  • ArchiverArchiver Posts: 46,084
    edited 2003-12-10 19:03
    --- benzlim83 <benzlim83@y...> wrote:
    > anyone know how to interface it ?
    > anyone have the source code or link?

    Scan back through the messages...Not too long ago I
    posted a reply to a similar question and even posted
    source code to scan the keypad using the EDE1144.




    =====
    Chris Savage
    Knight Designs
    324 West Main Street
    Montour Falls, NY 14865
    (607) 535-6777

    http://www.knightdesigns.com

    __________________________________
    Do you Yahoo!?
    New Yahoo! Photos - easier uploading and sharing.
    http://photos.yahoo.com/
Sign In or Register to comment.