VCO/LFO

Thanks to the awesome work of HAGIWO

Also inspired by Cezar Chirila design.

Schematic

RP1: Frequency potentiometer
RP2: Frenquency range potentiometer
RP3: Gain potentiometer
RP4: Precision potentiometer to set bias voltage
J1: CV input (1V/Oct)
J2: Output (10V/p-p)
SW1: Push button to switch between Sine, Triangle and Square signal
LED1/LED2: Indicate current signal type
LED3: LFO rate (shutdown in VCO range)