[sdiy] Ray Wilson's Single Bus Keyboard

[Pat Kammerer]

Hi everyone!

I just finished all of the stuffing and wiring of Ray Wilsons Single Bus
Synth Keyboard.  I have a partial problem with it.

If anyone has built this circuit, then I'm curious.  What should I expect as
an interaction between the 40106 and the 4066?  Am I right in assuming that
part of the 40106's job is to cause the switch to close when a key is
pressed. I'm not getting CV output or trigger where I should.  I can trace
the keyboard reaction in the circuit, and I seem to run into a dead end
somewhere around the 40106 and the 4066.

I've never use the 40106 before, so I'm a bit above my head.  If any one can
help me understand what's going on in the CMOS part of this circuit, then I
would be grateful for help in troubleshooting.

Take care,
Pat