This is a work in progress. The ideas: Different approach for a V/oct synthesizer VCO We need pulse, saw, and optionally triangle at output 10V peak to peak straddling GND. V per octave is sampled by ...
We often think that less is more, but what can you do with a device that has only a single button? [Danko Bertović] wondered the same thing and he built an Arduino with a single button and a display.
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