Hello All, I am playing with a 13 keys keyboard project (the keys are made by momentary pushbuttons) to drive an Arduino Uno and I was wondering if someone can recommend a single multiplexer IC that can accept 13 inputs or more.
I know Arduino can accept up to 14 digital inputs but since the keyboard is going to be far from the Arduino, my goal is to cut down on wires going back and forth by putting a small daughterboard with the multiplexer on the keyboard and run back and forth from Arduino: Power, Ground, the output from the multiplexer and however many wires Arduino needs to select the multiplexer port (4 probably as 2^4 = 16).
If you have any suggestion of a multiplexer, and where to buy them, I would greatly appreciate.
P.S. I searched the forum but I mainly found references to an 8 port multiplerxer. I could use two, but that would partially defeat the purpose on cutting down on wires going back and forth from Arduino and make it for a bigger daugherboard.