Keypad Matrix !! Ain't that sounds cool. Well that's a very simple voltage divider using resistors of various values .Introduction :Most electronic keyboards used in synthesizers, electronic organs, and digital pianos use a keyboard matrix circuit.Why keypad matrix??Without a matrix circuit, a 61-ke...By: himshekhar.das
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from Instructables: exploring - technology - robots http://ift.tt/15ZLHm8
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