[sdiy] Envelope following -> grafting to knobs

[nN AAt e e]

> So replacing them with voltage controlled devices can be hard...
> usual suspects are
>
> 1) several photocells
> 2) several fets
> 3) one or more VCAs
> 4) motor operated pots
>
> The biggest issue is whether the pot is used as a three
> terminal device (pot), or as a two terminal (variable resistor)
>
> You will really have to look at each individual circuit to see what
> are the most important attributes of the design to find a suitable
> replacement.  Send a link to a particular schematic and we'll take a look.

most of the designs are three terminal, im probably going to be kind of
hacking some designs that are already available on most of the pedal sites.
i look at things from a much more 'circuit bending' kind of view, with
pretty limited actual schematics understanding etc... i can understand flow,
components, and usually what is supposed to do what... but get into the math
and thats almost all over my head... [seventeen year old algebra 2 student].

im just more curious about replacing pots with vc right now. i hadnt even
though of using photo resistors in pedals [which ive done a few times
bending]. a zvex sort of pedal with photo resistors would be cool [including
one per control on the effect... some pretty weird alesis AIRfx kind of
stuff going on...?] i will probably get more into actually building stuff
later when i get some free time to practice... and when my friends realize
that buying semi-custom effects at cost is a rediculously good deal.

right now theres a 50% chance ill pull a moog and just do electronics for my
next year and a half of highschool...

- nate - www.robot-dreams.com

[i have a note book full of drawings of gear that would be awesome if people
would make]