The VCO module is a "classic" VCO:
- two CV inputs 1V/octave
- MODulation input with Level-knob, switchable to frequency or pulsewidth
- PWM input
- Coarse / Fine knob for frequency
- Pulsewidth knob for squarewave
- Square / Triangle / Sawtooth output
This is best if you need an oscillator for primary musical / melodic use.