[sdiy] Buchla 266 Source of Uncertainty

[Dave Brown]

I just finished building the Roman Filippov Buchla 266 Source Of Uncertainty
PCBs.  I haven't assembled the module yet but fully validated both PCBs.  I
never have seen a good explanation of what the controls and outputs really
do.  It is pretty interesting.  SRV2 has high gain and level shifting with a
+/-5V wavefolder to keep the output within 0 to 10 volts.  The QRV control
varies the number of bits in the QRV DACs from 1 to 6 bits.  All 6 functions
of this module have scope images and descriptions.

I made modifications for 5V inputs and outputs.  There are a lot of scope
images on my webpage which starts at
http://modularsynthesis.com/roman/buchla266/266sou.htm .  I have a separate
page for each PCB.

Enjoy.

David J. Brown
Email davebr at earthlink.net
Website http://modularsynthesis.com