[sdiy] Small Resistors and slider pots

[Matti]

Whole bunch of photoresistors in series (in physical relation to each
other, that is, not electrical), comparators, and a microprocessor. When
the voltage through the photoresistor goes high, that is, a shadow falls
on it, the processor interprets his to mean that the edgeof the shadow is
at that point, outputs proper voltage. "d be awfully grainy, but, if
you've got a whole wall of this thing, graininess shouldn't matter too
much. Might be fun to make soundsculptures this way.


Rather reminds me of 99's lange nacht der muenchner museen. There was an
exhibition, I forget the name and where, I just remember itwas a stop or
two east of thewall exhibition (had some of pink floyd's music playing),
where there were synthesizers that outputted sound depending on where
shadows falling on hem fell. Anybody remember/have any information on
this, who did it, and so on?


Enjoy.

--------------------------------------------
take your time, track the shabby shadow down in the pissy mists of history


the dreamer is still asleep

On Tue, 3 Apr 2001, The Peasant wrote:

> >for my money (you'll love this H) get rotary encoders and remove the pot
> >altogether :-)
> >go DIGITAL....
>
> Somebody needs to design an optical slide pot that tracks your finger position
> and outputs a cv or whatever based on relative motion of that position. Shouldn't
> be all that difficult...
>
> But, it must be reasonably inexpensive and reliable, tactile feedback being
> another matter as well. Any thoughts?
>
> Take care,
> Doug
>
> ______________________
> The Electronic Peasant
>
> www.electronicpeasant.com
>