[sdiy] VC pedal

[The Peasant]

Quoting harrybissell <harrybissell at prodigy.net>:

> I was trying to get a very fast response for the high-hat "splash"
> sound, as well as foot closed. So my optical gate is closed when the pedal
> is up, and the cell is suddenly illuminated at the full down.  I do get some
> "analog" range but that is not my intent.

I thought that the opto pair that I used would be fast enough for this 
application, but I too set the optical gate so that pedal-down coresponded to 
full illumination just in case that response is faster. However, I will be 
driving the hi-hat module with sticks and a pad as well as the pedal, so I need 
a fairly linear output for a more realistic range of sounds. I will also 
integrate the output as the pedal goes down and trigger with a comparator at 
the bottom, for the level and timing of the sounds produced with just the pedal 
alone.
 
> I have some very strong springs inside the case... so there is some feel. I
> can
> see the Peasant's design is far beyond mine in authentic 'feel' department.
> 
> yo' mssr. Peasant:  Did you do anything to model the inertia of a real
> hi-hat.
> The
> cymbal mass gets quite an acceleration when you slap it down with the foot.
> Are
> you
> trying for 'real feel' or synth controller ?   I did not bother with that.

No, but I could always bolt some chunks of lead to the top of the pedal if I 
wanted to do this. I may try this to see if the improvement is worth the 
effort, as I'm very much used to the real thing. Thanks for the suggestion, 
Harry!

Take care,
Doug
______________________
The Electronic Peasant

www.electronicpeasant.com