Help needed in building scrolling LED display using PIC16F877A...

Discussion in 'The Projects Forum' started by RRITESH KAKKAR, Oct 31, 2012.

  1. RRITESH KAKKAR

    Thread Starter Senior Member

    Jun 29, 2010
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    HI,

    I am building scrolling LED. till now i have connected 8X8 LED with 4017 and and uC board only programming is left so, i want to make font for it..
    please share your idea for making fonts in dots matrix form....


    Thanks
     
  2. nerdegutta

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    Dec 15, 2009
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  3. John P

    AAC Fanatic!

    Oct 14, 2008
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    I would do a search on "8x8 font" and see what's out there waiting to be used.
     
  4. ErnieM

    AAC Fanatic!

    Apr 24, 2011
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    BING BING BING

    I think we have a winner here.
     
  5. RRITESH KAKKAR

    Thread Starter Senior Member

    Jun 29, 2010
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    which??
    OK,

    I have completed all connection with LED's and 4017 so i need your help regarding code for testing simple msg.
     
  6. nerdegutta

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  7. RRITESH KAKKAR

    Thread Starter Senior Member

    Jun 29, 2010
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    MAP LAB iDE C- compiler...
     
  8. nerdegutta

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    I understand that you are programming in C, but which compiler are you using? There are several available.

    Hi Tech C?
    CCS C?
    Microchip CX8?

    To mention a few...:)
     
  9. RRITESH KAKKAR

    Thread Starter Senior Member

    Jun 29, 2010
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    Hi Tech C.........
     
  10. nerdegutta

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    OK, do you have a schematic? We need to know which bit and on which port you are clocking the 4017.
     
  11. RRITESH KAKKAR

    Thread Starter Senior Member

    Jun 29, 2010
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    I have not connected display with uC yet, and there are 8 for rows and 1 for column through 4017 and rest of power supply..
     
  12. nerdegutta

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    We are in need of a schematic. :)
     
  13. RRITESH KAKKAR

    Thread Starter Senior Member

    Jun 29, 2010
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    of led matrix?
     
  14. nerdegutta

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    The schematic of the whole circuit. With LEDs, IC's, uC, resistors, capacitors...
     
  15. HardCoder

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    Nov 3, 2012
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  16. RRITESH KAKKAR

    Thread Starter Senior Member

    Jun 29, 2010
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    here ckt of led, uc is not connected to column(but the ckt is same as in previous post)...
     
  17. nerdegutta

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    Dec 15, 2009
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    You know that there are several free tools for drawing a schema? I's suggest you use one.

    Eagle
    Diptrace
    ExpressPCB

    ... and there are more, just take your pick!
     
  18. RRITESH KAKKAR

    Thread Starter Senior Member

    Jun 29, 2010
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    the schematic is simple i think u know it just help with code please..
     
  19. nerdegutta

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    Dec 15, 2009
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    Although the schematic is simple, it needs to be done in a proper way. When coding, you will sit with the uC's datasheet, the CD4017's datasheet, and the schema in front of you.

    It will also help when you are troubleshooting.
     
    spinnaker likes this.
  20. spinnaker

    AAC Fanatic!

    Oct 29, 2009
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    Nerdgutta has graciously offered his valuable time to help you. I do not think it is unreasonable for you to comply with his request, no matter how simple you think the schematic might be.

    Please help others to help you.
     
    nerdegutta likes this.
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