[sdiy] hoe to build a cv keyboard

[s.matik]

hi,

i´ve loved the sound of an analog synths from the day i first heard
kraftwerk play. (and thats a long time ago). but with no money, it´s been
impossible to buy one..or two or three ;) but a month ago i realized that
it´s more than possible to build one myself! so.. i´m all new to this synth
diy stuff, but from what i understand i need a cv keyboard to generate the
"voltage"-part for the VCO. i´ve tried to find even a piece of  schematics
or other info from the internet with no results. could someone help me out
here a bit.

sakke