[sdiy] Duh. Major sequencer tuning, realization. :O

[Ken Stone]

>12 semitones to an octave.  Right? ;)  12 steps in a rotary switch, for 1
>semitone PER.  Right?  ;) ;)

No, not exactly. C to C1 is 13 notes (positions), or twelve steps (clicks of
the rotary switch). If you want the oposite ends of the the rotary to be one
octave apart, you need 1 volt across twelve equal resistors, with the top
position and bottom position the ends of the resistor string.

>This does NOT mean, 12 resistors of the the same value around the rotary
>switch!  :O

Oh yes it does! Note that twelve resistors = 13 positions - 13 hookup points. 

>It took me a while to realize that the 1st and 12th switch positions are
>NOT, 1 octave (I.E. - C to C) 

This is true. Position 13 needs to be the top C

Ken
_______________________________________________________________________
Ken Stone   sasami at hotkey.net.au or sasami at cgs.synth.net
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