[sdiy] analogue guitar type controler thing

[harrybissell]

inline at the bottom...

Dominic Tarr wrote:

> >course its kind of expensive but wiring up doepfer's ctm64 to a fretted neck
> >would probably yield something like an old peavey midibase (fretwired for
> >fast tracking)
>
> yeah too expensive/ not uber-diy enough for me.
>
> >but using metal strings with the fret contacts, wouldn't that cause some
> >sort of shock to the player?
>
> with a low voltage and current the player would be fine. have you every shocked your self from a 1.5V battery? it's not possible.
>
> >If you use real metal strings on a real guitarneck, you have
> >exellent switches. Just wire up the frets and figure out a way
> >to check what the highest fret touched is.
>
> thats a really good idea, to get the highest fret you could prehaps do something like the following:
>
> have a railf diodes connecting all the frets, (from highest to lowest) through not and and gates... so the "higher fret" signal goes through a NOT gate, then into one input of a AND gate, and the signal from the fret goes into the other leg, the output would then go to the lower frets through the diodes, and to the CV generation -- just resistors? what would be the easiest way to accurately get a number of signals into thier correct levels? trimpots?
>
> then the buttons down the body ("the strings")could have bistables or some thing, so thier note stays the same, but you can still do slides with the frets after you have released the note...
>
> hmm, if I wanted to make "the strings" velocity sensitive, how could I do that?

by using a guitar pickup with a preamp and a rectifier... envelope follower.

H^) harry

>
>
> cheers - Dom