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Thread: LCD hookup

  1. #1
    Newbie
    Join Date
    Feb 2001
    Posts
    8

    Post LCD hookup

    Hello all,

    I just a nice big char LCD panel, and am trying to hook it up.

    It's an AND711AST-30 LCD panel that is using a Toshiba T6963C controller.

    I think I have the pinout hooked up correctly to the parallel cable, but there is also two regular wires (white and black) on the opposite side of the panel. I'm not sure what these do. Any ideas?

    My main question is, I assume that this thing needs power (it's not getting it through the parallel port is it?) So do I just hook up a 5V and ground directly to the correct wires on the ribbon cable that I have going from the panel to the parallel plug?

    Thanks for any tips!

    John C.

  2. #2
    Maximum Bitrate gizmomkr's Avatar
    Join Date
    Dec 2000
    Location
    Smyrna, Ga, USA
    Posts
    778

    Post

    Idono about the power part, you should be suplying +5 somewhere.... ground it can pull from the interface.

    the 2 random wires are probably for the backlight <just a guess>
    Gizmo-
    Techonlogy on Wheels
    http://www.hjnetworks.com/car

  3. #3
    Newbie
    Join Date
    Feb 2001
    Posts
    24

    Post

    Ya the two wires are almost definetly for the power for the backlite.....one needs + 5 and the other i thinik gnd or negative 5, but they shuld be labeled A and C anode and cathode....anode is negative, and cathode is positive if i remember right, just try it one way if it doesn't work that way change em, try before you solder btw mine was backwords....

    ------------------
    Player: Custom Plexi-glass case, k6-2 500 MHz Proccessor, 250W power supply 13.1 GB removeable HD, 4x20 INVERTED LCD, Voice Control Compliments of TrimodalVoice, IRman, Keypad buttons on LCD

    Car: 1983 Chevy El Camino Conquista, KICKIN CAR!
    Player: Custom Plexi-glass case, k6-2 500 MHz Proccessor, 250W power supply 13.1 GB removeable HD, 4x20 INVERTED LCD, Voice Control Compliments of TrimodalVoice, IRman, Keypad buttons on LCD

    Car: 1983 Chevy El Camino Conquista, KICKIN CAR!

  4. #4
    Newbie
    Join Date
    Feb 2001
    Posts
    8

    Post

    Thanks for the tips all. I've got some juice running to it now, but it still won't fire up. I think I need to do a reset, etc....and bring it up properly in a program.

    Here is the datasheet for this LCD.
    http://www.purdyelectronics.com/PDF/AND711.PDF

    Now on the second page, there's the example of a variable negative voltage supply. It seems as though this is for contrast control. I also assume that this is necessary to get this thing working. Could someone give me some tips on the schematic on page 2? Does anyone have a good site to learn how to read schematics?

    Thanks!

    JC

  5. #5
    Variable Bitrate
    Join Date
    Aug 1999
    Location
    Yorba Linda, CA
    Posts
    323

    Exclamation

    FYI: Anode is Positive (+) and Cathode is negative (GND). Don't hook it between +5 and -5... this is actually 10V and will burn out the backlight if it doesn't have current limiting resistors in it.
    Jason Johnson
    Yorba Linda, California
    http://www.m2pc.com

    MPC Phase IV - *** PENDING ***

  6. #6
    Newbie
    Join Date
    Feb 2001
    Posts
    13

    Post

    the backlight might be 120V. Mine is. It's similar to the light's on watches, it's not an led. I just made 2 leads, and wired it up to a wall socket.

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