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torvalds/GuitarPedal: Linus learns analog circuits.

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Linus learns analog circuits

Resurrected random guitar pedal project This is a resurrected version of my old guitar pedal project: a digital guitar pedal built around an RP2354A and a TI audio codec, with all the effects done in software on a core of its own. It went through a phase with a little OLED screen and a couple of rotary encoders on it, and that's gone now. Editing seventeen effects through a 128x128 screen and two knobs was never going to be pleasant, and I'm not exactly known for my mad UI designing skillz, so the pedal itself is down to one knob and one stomp switch and the deep editing happens somewhere…

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