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I bought a Brain Jr to build a MIDI foot controller, but in the process came up with an idea to build an isomorphic keyboard as well. Is it possible to get more than 32 notes out of a Brain Jr (I'm assuming I can use all the digital and analog I/O's for notes, though i'm not sure how to wire a push button to the analog section at the moment). Would there be a way to add octave buttons? Perhaps Transpose buttons? I want some help understanding the limitations of the Brain Jr before I start making my plans for building this.