Debouncing button or switch inputs on microcontrollers can be a challenging problem for those first starting to program these devices. Part of the reason for this difficulty is that real-world butt… ...

Switches and push buttons need debouncing. It is straightforward to do this with software, using a library. The advantages of the Switch library are: External pull-up resistors are not required.

The simplest button debounce utility for Arduino This library is probably the simplest button debounce ulitity for Arduino. The code is based on Jack Ganssle 's debounce function that he described in ...

Note that successive calls to the debounce routine move it from the just-pressed transitional state into the “button is down” state where it will spend a lot of time when someone’s mashing it.