[sdiy] I finally did some SDIY this weekend

[harrybissell]

Acceleration / velocity probably is less important than you'd think
either one will work... all you really need is a final value for the
impact.

I made a hi-hat pedal to work with the DrumKat system... granted that is
easier because they look for resistance.  I used a photocell / mask inside
a MOOG (DeArmond) CV pedal.  Yes kids... I HACKED UP A MOOG !!!

I used a heavy, adjustable spring to get the right feel.  The photocell is masked

when the pedal is full UP and is uncovered as the pedal goes down.  The rate
of resistance drop is sensed (by them :^).  It will do the "half-open" and
"splash"
sounds like the HatKAT it is supposed to emulate.

I would definatly recommend OPTICAL. Any pot will wear out, especially with a
REAL drummer on it. I don't know if Mssr. Peasant is a real drummer.  If he can
break
his own DIY kit in... let's say TWO hits.... he's for real.

What can you say if the drummer drools from both corners of the mouth ?

[ the stage is level ]

H^) harry     (also does diy drums)

The Peasant wrote:

> 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
> > >
> >
> >