[sdiy] proximity detectors anyone ?

[Michael Ruberto]

>From the limited experience I've had working with pick-and-place robots I 
would not choose IR. Incandescent lighting will play merry havoc on IR 
detectors. I once made a pick-and-place machine start thowing parts across 
the room by getting too close with an incandescent worklight.

I've always wanted to experiment with one of these Ultrasonic units:

http://www.mpja.com/productview.asp?product=6049+KT

I believe you can tap a proportional analog voltage from the reciever 
circuit.

M. A. Ruberto



>From: jbv <jbv.silences at club-internet.fr>
>To: synth diy <synth-diy at dropmix.xs4all.nl>
>Subject: [sdiy] proximity detectors anyone ?
>Date: Sat, 20 May 2006 20:44:15 +0200
>
>Hi list,
>
>today an idea arose during a conversation with friends...
>It began with proximity detectors used in robotics, and
>especially the fact that those sensors are used on a moving
>device to detect non-moving objects of the environment in
>order to avoid them...
>but what if the idea was reversed : fixed detectors to detect
>distance of moving objects ? for instance 6 detectors, each
>one on 1 side of a cube, and moving objects in between
>(a moving hand, balloons, bubbles, a butterfly, flies,
>smoke, whatever). Signals sent by detectors would be
>hooked to a uC to compute in realtime the xyz position of
>the moving hand, and these parameters would be used as
>VC signals for synths...
>in the case of a hand, I guess a joystick or a dataglove could
>also be used to determine xyz position in space, but I'm sure
>there are many other funny applications...
>
>so here's my question : does anyone have any experience with
>proximity detectors, and what would be the best choice : IR,
>ultrasonic...
>I've already found several papers on the subject via google, but
>I'd like to have the opnion of this list as well...
>
>Best,
>JB
>

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