The RubberNipples module is a DIY-friendly version of Olivier Gillet's Ripples filter (see https://github.com/pichenettes/eurorack). The goal is to take a schematic & layout designed for automated production and make something that is adaptable and accessible to the SynthDIY community. I have split the schematic into three parts - the filters, the potentiometers and the sockets (3.5mm or 1/4"). This gives three PCBs that can be easily adapted to suit different panel designs. The pot & small socket PCBs should fit behind a Ripples-compatible panel. And no, we don't have any rubber walrus protectors.