Debouncing button or switch inputs on microcontrollers can be a challenging ... For those wanting to try this out, [stockyu] has included some example Arduino code for others to use.

That is, it isn’t really connecting one output to 32 inputs. It is more like a 32-position switch that connects a single pin out of 32 to one other pin. Keep in mind that these sort of devices ...

The Arduino Mega's PWM pins are digital output pins located on D2 to D13 and D44 to D46, coming to a total of 15. While they function as normal digital pins that can switch a component either ...