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8x8 Bi-Color Dot Matrix Display — Parallax Forums

8x8 Bi-Color Dot Matrix Display

ArchiverArchiver Posts: 46,084
edited 2002-04-17 15:52 in General Discussion
I picked up a couple 8x8 dot matrix displays and decided to connect them to the
stamp. I thought about using on of the Maxim chips but I ran into a problem.
The displays are bi-color so they have the typical 8 columns but 16 rows (8 for
green and 8 for red), since the Maxim multiplexing ICs can only handle up to 8x8
displays it wouldn't work. I'm not sure how I would go about handling
multiplexing the displays, any suggestions?

Chris Shuster
http://www.cpuman.f2s.com/

[noparse][[/noparse]Non-text portions of this message have been removed]

Comments

  • ArchiverArchiver Posts: 46,084
    edited 2002-04-17 15:52
    Hi Chris:

    Just a thought ..... I don't have the pinouts of the maximum chip in front
    of me or know exactly which one you plan on using but if the chip has an
    (enable-chip select) lead you could use 2 one for green leds and one for
    red. Your program could enable the one you want .... OR again use 2 but
    send the data to both by using a buffer IC.driver.

    Good Luck

    Eric


    Original Message
    From: "Chris Shuster" <cpuman3@h...>
    To: <basicstamps@yahoogroups.com>
    Sent: Wednesday, April 17, 2002 5:19 AM
    Subject: [noparse][[/noparse]basicstamps] 8x8 Bi-Color Dot Matrix Display


    > I picked up a couple 8x8 dot matrix displays and decided to connect them
    to the stamp. I thought about using on of the Maxim chips but I ran into a
    problem. The displays are bi-color so they have the typical 8 columns but
    16 rows (8 for green and 8 for red), since the Maxim multiplexing ICs can
    only handle up to 8x8 displays it wouldn't work. I'm not sure how I would go
    about handling multiplexing the displays, any suggestions?
    >
    > Chris Shuster
    > http://www.cpuman.f2s.com/
    >
    > [noparse][[/noparse]Non-text portions of this message have been removed]
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