h4yn0nnym0u5e
Well-known member
Don’t think LM358 is rail-to-rail, which is probably needed at 3.3V. Lots of options are, though.
And.. for anyone interested, here is the whole thing. 5 octave range with touch sensors in the back of the unit. Joystick for pitchbend, etc. The whole thing built into a powerboard case.
View attachment 25761
Happy to answer any questions