[sdiy] Video-synth DIY ?

[Henry Till]

Just found the PDF of the Sandin Plans:

http://vasulka.net.zkm.de/archive/Artists6/Sandin/Feb28,1976.pdf

check out the main site
http://www.vasulka.org
for some interesting history while you are there...

-h

On Jun 28, 2005, at 5:56 PM, Metrophage wrote:

> --- "Metzger, Michael A" <MAMETZGER at partners.org> wrote:
>
>
>> Wow - look at all the responses. Contrast this with my similar
>> inquiry a couple years ago. I either got one reply or none,
>> can't remember!
>>
>
> Indeed, I am surprised! You see, we weren't the only people here who
> were thinking about video synthesis!
>
>
>> So, CJ Metrophage, you're not going to believe this but.....I have
>> the schematics and assembly instructions for the Sandin Image
>> Processor. That's the good news.
>>
>
> Wonderful! I had read that those were out there, I was hoping that  
> they
> weren't all collecting dust with abandoned video synths in some attics
> somewhere. I certainly hope I can check them out sometime.
>
>
>> The bad news is that they are in storage and I probably won't
>> be able to get at them until September.
>>
>
> I know how that can be... half of my stuff is in storage near my
> parents place. No video schematics there, though.
>
>
>> Since it was designed a long time ago all the parts are
>> obsolete. But the circuits could, of course, be redesigned
>> using modern components. (fun with surface mount!) IIRC
>> there's also a note from Dan Sandin with the schematics
>> that gives people the go-ahead to build the modules for
>> non-commercial use. I'll check that when I get the schematics.
>>
>
> I am sure we are all used to electronic components going by the
> wayside. OTOH a lot of interesting new ones do come along. I'd love to
> see some video synth schematics mostly to get an idea of the  
> details of
> how it all fits together, I didn't assume that there would be any I'd
> reproduce exactly. I have learned a bit from going over audio synth
> schematics, I expect the same applies here. It's cool he encourages
> their use, it keeps his legacy alive. Sad to see some obscure gear and
> software is still secret decades later after the commercial potential
> has long since gone
>
>
>> As for the circuits themselves, I don't remember details on the
>> Sandin IP modules. But they all feed into an analog color
>> encoder. The encoder outputs the PAL & NTSC signals. You
>> could get an encoder and feed it various signals. That's what
>> was done in this magazine article
>> http://www.audiovisualizers.com/library/store/TVFX
>> The TEA2000 & SAA1043 chips are no longer produced.  And
>> when you analyze that circuit you'll see its rather basic anyway.
>> You could probably make something more interesting in
>> short order.
>>
>
> It seems that a lot of artists mentioned on their pages used video
> encoders from old camera PCBs. Thanks for the article link, it is more
> basic than I am thinking of but is not a bad starting point, idea  
> wise.
>
>
>> Here are AD's color encoders. I think only the first 3 accept analog
>> input.
>>
>>
> http://www.analog.com/en/subCat/0,2879,765%5F798%5F0%5F%5F0%5F,00.html
>
>>
>> Or you could get one of the digital encoders and feed it
>> random/rhythmic/whatever digital pulses.
>>
>
> True. Appears they offer decoders as well. And of course ICs for fast
> VCAs and multipliers. Off to eat dinner and meditate on these...
>
> CJ
>
>
>
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