I'm new to arduino. I read everything available about multiplexing and led-arrays and think I fully understand it. What I want to do next is to build a hall-sensor matrix (8x8). Therefore I want to alter the led array in that way that I change the leds to normal diods and put a hall sensor behind each (with the needed resistor, like described here http://www.hobbytronics.co.uk/arduino-tutorial11-hall-effect)
I want to add a multiplexer to the output (I need the other ports for other project based outputs). That output I want to put on the matrix row. For the input a multiplexer is added, too (columns of the matrix).
Now I want to multiplex through the outputs and set them in high and check all possible input for a sensor signal to clearify which hall sensor switch is activated.
Does that sound like a feasable plan or won't it work?
Thank for you help and guidance.