[sdiy] I finally did some SDIY this weekend

[harrybissell]

LOL.  I have not had good success with accelerometer-on-a-shoe.   It seems that
when your nerves tell you the foot has hit the floor, and the point where the
accelerometer picks up the sudden deceleration... are not always the same point.

I attribute this to the foot movement inside the shoe, or possibly different
points
of impact for the ball of the foot and the accelerometer.

I'm back to dancing on rubber pads equipped with piezos !!!

By the way, the laser-harp pages were really cool.  I'd suggest that there is no
need for a beam-splitter
anymore, a handful of $10 laser pointers would work as well.  I bought a bunch
of pointers for $1
each at a... well... a 'dollar store'.   The collmination of the beams were
terrible, probably why they
were a dollar.

Its also nice to see Roman's midi board put to ANOTHER good use... although I am
prejudiced in
favor of the Quantized Midi Theremin (also with Roman's  board)...  which has NO
chance to put your eye out.

DO NOT stare into beam with remaining EYE...

H^) harry

Roman wrote:

> good carbon pots are specified to take 4000 revolutions
> while cermet ones usually say 50000-1000. Precision pots survive 1 milion
> revolutions without significant quality decrease.
> according to datasheet of course.
>
> Say, acceleration sensor tied to your shoe. No pedal whatsoewer and it
> works. "look! a guy is stomping with his foot and makes sounds!
> he must be using playback, let's make him play the lucky man tune"
>
> Roman
>
> ----- Original Message -----
> From: "The Peasant" <ecircuit at telus.net>
> To: "Roman" <modular at go2.pl>
> Cc: <synth-diy at dropmix.xs4all.nl>
> Sent: Tuesday, June 29, 2004 1:21 AM
> Subject: Re: [sdiy] I finally did some SDIY this weekend
>
> > I was planning on using a slide or rotary pot, and to derive the velocity
> and
> > acceleration (or maybe just velocity) electronically, but I'm concerned
> about
> > pot wear. An optical encoder (and I already have a few) would solve the
> wear
> > problem but would add circuit complexity. Guitar pedals seem to do OK with
> > pots, but I think a hit-hat pedal will get much more use in a short period
> of
> > time.
> >
> > I think I will experiment with some better quality pots and check wear
> rates.
> > Does anybody know if cermet pots wear better than carbon?
> >
> > Take care,
> > Doug
> > ______________________
> > The Electronic Peasant
> >
> > www.electronicpeasant.com
> >
> >
> > Quoting Roman <modular at go2.pl>:
> >
> > > ADXL acceleration sensors from Analog Devices
> > > or one of gyroscope series they recently released
> > > geared pedal with motor, so full travel of pedal gives like 10
> revolutions
> > > of the motor
> > > or rotary encoder instead of the motor. If you get industrial one
> > > with 1000ppr then gear is not even needed.
> > > Or simply slide potentiometer as CV generator
> > >
> > > Roman
> > >
> > > ----- Original Message -----
> > > From: "The Peasant" <ecircuit at telus.net>
> > > To: "James Patchell" <patchell at cox.net>
> > > Cc: <synth-diy at dropmix.xs4all.nl>
> > > Sent: Monday, June 28, 2004 6:39 AM
> > > Subject: Re: [sdiy] I finally did some SDIY this weekend
> > >
> > >
> > > > striking position. I am designing a hit-hat pedal as well, with
> position
> > > and
> > > > acceleration outputs. Any and all suggestions/comments/discussions are
> > > welcome
> > > > and appreciated!
> > > >
> > > > Take care,
> > > > Doug
> > > > ______________________
> > > > The Electronic Peasant
> > > >
> > > > www.electronicpeasant.com
> > > >
> > >
> > >
> >
> >