[sdiy] Video-synth DIY ?

[Metzger, Michael A]

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!

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. The bad news is that they are in storage and I probably won't be able
to get at them until September. 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.

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.


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.

Mike