Last year I spent time being confident with arduino projects (music related, sending MIDI messages to a hard synth, etc).
I would hack that when I plug my arduino (USB), it appesars in aconnectgui list, the same way that I plug my Axiom 25 and magically it appears in aconnectgui.
I suppose that this task could be called "to program an alsa driver for arduino", isn't it?
If someone can point me in the right direction...
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