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Hello Katie,

Implementing a finite state machine is fairly straight forward.
First you need a variable that represents your state. In your case just take an int and set it a value from 1..10,...

Hi,

have you looked at Midi? It uses the serial protocol, runs at 31250 baud and is opto isolated.
There is a schematic on this page: https://www.pjrc.com/teensy/td_libs_MIDI.html, but there are...

Hey Leeman,

your polling rate will depend on the way you wire up your switches and how you code the polling.
I would not worry too much about that now. I built a Midi Keyboard with 44 Keys, using...