[Noisebridge-discuss] can someone look something up for me in a forrest mimms book?

[Christoph Maier]

I just registered on the Jameco page at RoboGames, and voilà:
http://www.jameco.com/Jameco/PressRoom/punk.html?emc=el&m=441684&l=21&v=280c027cda
I also recall from the last Circuit Hacking Monday a stray board on the
electronics table; I think it was one of these:
http://jimmieprodgers.com/kits/apc/ ,
specifically the board in 
http://www.flickr.com/photos/jaypee4227/4150306471/

Electrically, one 556 timer and two 555 timers are equivalent (unless
you want to use different power supplies for the two 555 s):
http://www.kpsec.freeuk.com/555timer.htm

Christoph <- recommends to build http://xkcd.com/730/ instead.

On Sat, 2010-04-24 at 04:10 -0700, Michael Shiloh wrote:
> i'm traveling and need a simple schematic from one of his engineers 
> notebooks, the volume of timer, op-amp, and something else circuits.
> 
> the circuit is a simple little noisemaker consisting of two 555 timers. 
> IIRC, one generates a lower frequency that then modulates the second 
> tone generator.
> 
> i think it's called something something like "sound effects generator". 
> not to be confused with his "stepped tone generator" which uses a single 
> 556, and then went on to become the atari punk console.
> 
> the nice thing about his circuit is as i recall it is incredibly 
> tolerant of values, and since i have limited resources i figured it 
> would be perfect.
> 
> if anyone has a pointer to an online resource, or a schematic or 
> picture, or has the patience to copy it in ascii form, that would be awesome
> 
> thanks
> michael
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