Available as an assembled Module and as a DIY project.
This Module is currently available.
3HP Phase Distortion Oscillator
The PD-Osc is built on the ATtiny85.
The name “Paperface” comes from the classic Serge look with white panels.
This is the oscillator that makes resonant sweeps without a filter.
Functions like the famous Casio CZ synths.
1 analog pitch input CV 1v/oct.
1 analog PD Modulation Index CV input.
1 analog VCA Gate input.
The module is open-source and can be found here:
https://janostman.wordpress.com/the-3hp-paperface-euro-modules/