This gadget was designed as part of etching and PCB design workshop at PIFcamp 2017 by Staš Vrenko and Vadim Vooku Petrov. During the workshop participants learned to design a circuit in KiCAD and later etched and built the board. In this instructable the etching process will be skipped (there are plenty on Instructables, check this one). The circuit is based on the schematic of a classic APC, with two additional CV inputs, that you can connect to different CV sources (0 - 9 V) for example: Baby10 sequencer, 40106 oscillators, 4040 frequency dividers… We also tested the device with some “proper” synths, like Moog Werkstatt, and gained extended control over the sound.”


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