Squarewave VCDO

This simple sketch turns Euroduino into square wave VCO. To build this project you need the NewTone library.


  • POT1: Coarse tune within 1 octave
  • POT2: CV2 modulation depth
  • SW1: Octave switch (0, +1, +2)
  • SW2: Range switch (0, +3, +6) (same as octave, but wider)
  • CV IN1: Exponential modulation, 1v/oct.
  • CV IN2: Exponential modulation, adjustable with pot 2
  • DIG OUT2: Audio out (With DC offset)


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