Another Pete McBennett synth project. Sorry for my hand in the way at first, lots of knobs this time. No keys, just fun stuff. It is the same PWM oscillator as my previous designs, and the same filter. Except I added LED control for the LDR's (heat shrink tube), and attack/decay, and resonance, and cutoff frequency, And a choice between LFO or manual trigger for the filter. Update: Here is the link to the schematic: https://drive.google.com/open?id=1cJUHVGYlfISKgvMGfcYSqVgASvZ1gUJ_
Forgot to put this in the schematic: Q1 and Q2 are 2N3904 or any standard small-signal NPN transistor. D1 and D2 are 1N4148 switching diodes.
