Video Generation with AVR

Discussion in 'Embedded Systems and Microcontrollers' started by lefam, Jan 6, 2011.

  1. lefam

    Thread Starter Member

    Nov 30, 2010
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    Hello Guys,

    Please can you point me to websites where I can learn how to do video generation with AVR microcontrollers (in preference Atmega168).

    If possible, your answers can be in the style of a tutorial.

    Thank you.
     
  2. thatoneguy

    AAC Fanatic!

    Feb 19, 2009
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    Tetris Game with TV Output.

    Source code is included on that link, not sure if that is what you are looking for or not.

    The output is PAL, but there are others around with NTSC output. What is your location's format?
     
  3. lefam

    Thread Starter Member

    Nov 30, 2010
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    I am looking for websites with explanation of the protocols, NTSC/PAL, etc. With basic explanations and examples of how to generate signals.
     
  4. bertus

    Administrator

    Apr 5, 2008
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  5. hgmjr

    Moderator

    Jan 28, 2005
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    A color video signal is rather complex. I don't believe that an AVR 8-bit microcontroller by itself can cope with the 3.579545 Mhz NTSC color signal. A monochrome tv signal is a lot less complex and therefore may be feasible.

    It would help if you would elaborate on what is the nature of the tv signal you would like to generate.

    hgmjr
     
    Last edited: Jan 7, 2011
  6. lefam

    Thread Starter Member

    Nov 30, 2010
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    As I am just starting I will be glad with monochrome tv signals.
     
  7. Markd77

    Senior Member

    Sep 7, 2009
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  8. retched

    AAC Fanatic!

    Dec 5, 2009
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    I was just reading through a google search.. Found some interesting stuff on video signal creation using onboard SPI.

    Start looking at "OSD" or On Screen Display projects.

    That will get you putting text on the screen, and getting the Pal/ntsc signals and timing correct.
    I searched "AVR OSD"

    here is one cool thing: Anyone involved with RC Airplanes will enjoy this:
    http://webx.dk/rc/video-wireless/video-osd.htm
     
  9. maxpower097

    Well-Known Member

    Feb 20, 2009
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    .......................................................
     
    Last edited: Jan 16, 2011
  10. hgmjr

    Moderator

    Jan 28, 2005
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    Describe what you would like to do in as much detail as you can?

    hgmjr
     
  11. lefam

    Thread Starter Member

    Nov 30, 2010
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    First, I would like to be able to draw some points and vertical/horizontal lines. My ultimate goal is to be able to make simple games like tetris and pong.
     
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