Proximity sensor?

[SYSph@ntOPus]

Narrow band theft prevention sensors work well. I used them in my "Removal
of Identity" piece for the "visions of holocaust and genocide" installment 
over here. They were superb. I also ran a van de graph generator through
certain plates to generate a jolt if you touched the "right" plate. Other
panels triggered sounds and film. IT also reared up on hydraulics and
ground it's own face off with grinders attatched to the end of its arms.
Bah, enough about my crap....Good Luck!

; On Wed, 29 Sep 1999, Andrew Schrock wrote:

> Hi all, 
> 
> I am currently building a multimedia sculpture (video/sound). It is DIY
> related, actually, since it will have primitive mixing facilities, parts
> of a casio sk-5, parts of a speak&spell, and an analog filter. However, I
> know how to do all that.. my question today is: what do you think is the
> best way to implement a proximity sensor? I was thinking some sort of IR
> switch, but I've always had a bit of trouble with those being reliable. I
> need it to turn the sound on when somebody walks in front of it and go off
> when they walk away. Seems fairly simple, but it has to be rock-solid. Oh,
> did I mention cheap? :) 
> 
> Also, if anybody has one of those old Apple IIGS monitors, please let me
> know. (the REALLY SMALL green kind which takes composite video input) I 
> need one, and the week I decided to go through with this project somebody
> bought the one I had my eye on at the salvation army. Bugger! 
> 
> later
> Andrew
> 
> -| Andrew Schrock | aschrock at cs.brandeis.edu |-
> 
> 
> 

		    
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