matrix display error



THE BOOK of DT's INTERRUPTS is an organization of interrupt service routines and other works written by Darrel Taylor, RIP.

Interrupt routines are arranged per Darrel's original list. Darrel Taylor's Instant Interrupts are an extension of the work of Tim Box whom in October of 2002 wrote INT_CTRL.pbp

Many of the forum members felt this is a long overdue project.

THE BOOK of DT's INTERRUPTS
will be a valuable resource and a tribute to Darrel Taylor the "Fanatical Contributor".

THE BOOK of DT's INTERRUPTS is located at http://dt.picbasic.co.uk/

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  1. #1

    Default matrix display error

    sir i made a led matrix display of 357 and we use eproam24C04 programming and we put its hex code but not any thing show on display.so sir please help me to done it.thanks

  2. #2
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    Default Re: matrix display error

    What model PIC did you use?

    PBP version?

    What CONFIGs did you use?

    What code do you have so far?

    Do you have a schematic of your circuit?

    Robert

  3. #3
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    Default Re: matrix display error

    That's a pretty far reach.
    Because your screen dimensions weren't evenly divisible by eight.
    Chuck it and start again

  4. #4


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    Default Re: matrix display error

    i have pic model 16f628A.
    PBP version is beta 0.1
    yes i have Schematics both of display circuit and controller circuit.
    but i use 24C04 in place of 24C56.
    all things are these attachments.
    i use hex file for programming code.
    Display Schematic.pdfController Schematic.pdf
    plz help me. because after done the all things nothing be shown on display.please help me.

  5. #5
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    Default Re: matrix display error

    Quote Originally Posted by muhammadbilal View Post
    ...
    PBP version is beta 0.1
    ...
    please help me.
    I'd start by updating. lol

    Robert

  6. #6
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    Default Re: matrix display error

    but i use 24C04 in place of 24C256
    ...
    Did you check if a 24C04 has enough capacity for the application?

    Robert

  7. #7
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    Default Re: matrix display error

    This works:
    http://www.picbasic.co.uk/forum/showthread.php?t=18491
    but if it didn't, it would be easy for everyone to help.

    The reason I find this funny, is total lack of information
    like "I have a problem with my kite, it doesn't fly".

    Unless you know you can use the EEPROM you did,
    that could be a problem. It would have been for one I wrote.
    So it would help, for example, you communicated that you do,
    or don't know it's ok to substitute that EEPROM.

    If it's a personal project, check Microchip samples won't provide the right one for free.

  8. #8
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    Default Re: matrix display error

    Make sure you have 5v on your circuit to begin with. LM7805 could easily be placed backward with this schematic.

    Robert

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