"Chiclet" Utility LFO: was RE: [sdiy] Monosynth features poll

[David G. Dixon]

> I love the idea of being able to sweep from saw through triangle to
> inverted saw. Would that shape control and the rate control be enough
> panel mounted pots? and what should the range of the thing be like? I like
> the idea of the 0.2 - 2Hz range myself.

Ian, you would be wanting one of my Triple Shape-Shifting LFOs, then!  Three
identical LFOs on one panel.  Each LFO has a RATE pot and a SHAPE pot, a
range switch (range from about 0.004Hz to about 2kHz, IIRC), a sync input, a
saw-tri-ramp output (SHAPE pot controls shape), and a pulse output (SHAPE
pot controls PW) with a pulse polarity switch (up gives 0 to 5V, down gives
-5 to 0V, and middle gives -5 to +5V).  Two LEDs indicate the rate of each
LFO: a yellow one shines during the up slope, and a red one shines on the
downslope.  These are located on either side of, and just below, each rate
pot.

I basically cobbled this design together by looking at every LFO I could
find and throwing in every feature I thought might be useful (except rate
VC).  It's a very sweet little module!  The sync inputs and polarity
switches are especially intriguing, as you can sync the LFOs in a chain to
get some fairly complex syncopated rhythms, and the polarity switches are
very useful for creating tuned intervals in Linear FM.  Of course, syncing
LFOs is very useful for lots of other things as well, and gives almost an
envelope-like function at low rates when triggered.