[sdiy] "voltage control" on the 556

[Nate Reeves]

Looking at the schematic I knew I had most of the parts laying around  
but save for the 2 470k pots.  >:(

Can I use a different value?  Say 2x 100k?  500K?  1M?  or mix?

Also, I found this guide to the 555 (and 556)

http://www.uoguelph.ca/~antoon/gadgets/555/555.html

I am glad to see this circuit with a credit given to Mr. Mims, though  
I can't seem to find my Mims 555 cookbook to see what page its from!

Cheers!

nate(looking at a 555 in the poly6 arp schemo) reeves

On Mar 8, 2009, at 12:04 AM, Horton wrote:

> I'm building an atari punk console -
> http://compiler.kaustic.net/machines/apc.html - and while I'm at it, I
> was wondering what other sorts of modifications I can add to it. Since
> I'm planning on making a bunch of little CMOS noisemakers and effects,
> I was wondering if there's any way to take advantage of the "control
> voltage" pins on the 556. My only knowledge of CV is typical 0-5V
> stuff on modular synths but I was wondering if those two pins are in
> any way similar to voltage control as I know it. My only real goal is
> extra freakout/chaos on this circuit, so I'm certainly not looking for
> something like 1v/octave control or anything like that, but I was
> imagining being able to patch in the output of something else that I
> build later.
>
> Am I totally barking up the wrong tree with this one, or what?
>
> AH
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