[sdiy] Blacet Improbabiltiy Drive build report

[harrybissell]

"Improbability Drive" sound like some interstellar travel means...

(Red Dwarf perhaps ?)

H^) harry

"R. Drake" wrote:

> Got my Improbability Drive kit yesterday and completed it today... it is
> sweet!  Analog noise is as you'd expect; "digital" noise is derived from the
> analog via a comparator (richer than the usual shift-register digi noise,
> plus VC of the comparator, and the "mix" lets you pan seamlessly between
> analog/digital); then a 2-mode filter (w/ VC); then the Sample/Hold with
> internal VC clock, and finally a 4-mode quantizer!  The variety of
> possibilities, and the musicality of this as both sound and control source,
> are really inspiring.  I played with it all afternoon and still felt like
> there was more to discover.
>
> I built mine with one mod: stock, the quantizer modes (chromatic, major,
> minor, & diminished) are set by a trimmer on the board... i brought that
> control out to the front panel.  I sacrificed the VC jack of the internal
> S/H clock (figured if I needed that feature, i could patch in a VCLFO as an
> external clock)--happened to have a surplus clarostat pot w/ a 1/2" round
> body, fit perfectly.
>
> I also wanted to add an tap into the quantizer, so I could feed an external
> signal thru it... seemed simple on the schematic, but the pcb looked like it
> would be a tricky surgery cutting tracks, so i skipped it.  Panel
> real-estate for another jack would also have been an issue.  If John ever
> does an MOTM version, tho, I think there would be room for both these added
> features.
>
> This is really a great time for analog/modular synths--so many cool tools
> available.  My wife and my pocketbook may scowl, but i'm thanking you all.
> Back to the basement!
>
> bbob