[sdiy] top octave gneration

[Scott Gravenhorst]

adam at hoodmusic.net wrote:
>Sure you could tune on the fly, use the CV input on the 555s, it would give you
>a tune control for each note of the top octave and one for the whole top octave.
>it would double the parts count, but be well worth the added control.

That thought crossed my mind as well, but has anyone actually
tried 'gang tuning' 555 timers this way?  Do they track?  I 
assume you mean to use pin 5 (as it is on the single timer).  
This doesn't have a very large range and because it changes 
the threshold value, it will also change the amplitude of the 
sawtooth output.

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