[sdiy] pneumatic oscillator

[James Patchell]

Great minds think alike...I was also contemplating how I could servo a plug 
that would move up and down the tube to control pitch...one thought would 
be to use a rotary encoded servo motor...that would probably be more than 
accurate....sounds like a good subject...OK guys, what is the easiest way 
to put a servo motor on a slide whistle?

Before I can make sample, I need to get the sawdust out of the tube and 
glue the stopper in....by the way, I am still spitting sawdust out...(not 
wood sawdust, but PVC sawdust...YUCK!)

At 10:38 AM 2/14/2005 +1030, Batz Goodfortune wrote:
>Y-ellow Jim 'n' all.
>         Well bugger me. A "No Cathode" tube synth. How do you measure 
> noise and distortion with a thing like that?
>
>Christ. Now you've got me thinking about how to voltage control it. Stop 
>that right now. :)
>
>Oh. Ok. I was thinking, since I've been messing with old CD drive 
>mechanisms of late, of a variable plug on a servo like a slide whistle. 
>And then sticking a bit of metal at the top and a coil like a guitar pickup.
>
>"That's crazy but it just might work."
>
>Nice one Jim. Samples please. :)
>
>Be absolutely Icebox.
>
>At 11:28 AM 2/13/05 -0800, James Patchell wrote:
>>http://www.oldcrows.net/~patchell/OddMusic/Whistle.jpg
>>
>>Here is a photo of some of the components for my first pneumatic
>>oscillator.  On the left, is the main tube, center is the plug that goes in
>>the blow end...and on the right, a coil form for the solenoid that will
>>eventually control air flow.
>>
>>I was amazed when the thing worked the first time...
>
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         -Jim
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