Eurorack VCO Module
A combined VCO, sub-oscillator and mixer module.
The VCO is the typical AS3340 circuit you find online and the sub-oscillator uses a CMOS 4024 counter, 741 and TL072 op-amps
Eurorack ADSR-VCA Module
A combined ADSR-VCA Module. Uses the classic 555 ADSR and a LM13700N based VCA
