8) Transposing notes with a ps/2 keyboard
Back with a new idea: I´d like to transpose the sequence by the function keys (F1-F12) of a standard ps/2 keyboard and use it like a "digital guitar" to play a MIDI synthesizer!
Here´s the functionality of the ps/2 connector: http://arduino.cc/playground/Main/PS2Keyboard
Note1: Pin20 is the "DataPin", Pin21 is the ClockPin of the ps/2 connection.
Note2: You have to extend the PS2Keyboard library to the function keys. Here are the scan-codes for the ps/2 keyboard: http://www.beyondlogic.org/keyboard/keybrd.htm