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'[EE] Atari video music'
2007\09\12@213815 by David VanHorn

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Ok, anyone want to hazard a guess how hard it would be to emulate this
cool device with a pic or AVR in NTSC video?

http://largeprojections.com/avm/

2007\09\13@020128 by Jon Philpott

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On 9/12/07, David VanHorn <spam_OUTmicrobrixTakeThisOuTspamgmail.com> wrote:
> Ok, anyone want to hazard a guess how hard it would be to emulate this
> cool device with a pic or AVR in NTSC video?
>
> http://largeprojections.com/avm/

What does it do exactly? I'm guessing it reacts to sound input with
the different visual effects? I'd imagine it'd be more than possible
on a PIC or AVR. It kinda reminds me of the of the AVR based cellular
automata video synth:

http://www.critterandguitari.com/critter/tutorials/ca-synth.shtml

Jon.

2007\09\13@112114 by Robert Rolf

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Jon Philpott wrote:
> On 9/12/07, David VanHorn <.....microbrixKILLspamspam@spam@gmail.com> wrote:
>
>>Ok, anyone want to hazard a guess how hard it would be to emulate this
>>cool device with a pic or AVR in NTSC video?
>>
>>http://largeprojections.com/avm/
>
>
> What does it do exactly? I'm guessing it reacts to sound input with
> the different visual effects? I'd imagine it'd be more than possible
> on a PIC or AVR. It kinda reminds me of the of the AVR based cellular
> automata video synth:
>
> www.critterandguitari.com/critter/tutorials/ca-synth.shtml
>

Shouldn't be hard at all. Just use a fast PIC with A/D, large EPROM
and a 28.63636 Mhz clock (8x NTSC color burst). Careful coding will
let you generate jitter free sync, and an external RGB encoder chip
will take care of the NTSC encoding (4 bits per color should be enough).

This sort of box is also buildable with a cluster of scan rate locked
function generator chips, and compartors, but the PIC would be more
flexible.

Robert

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