GitHub - davidepalladino/Button-Arduino: This library allows to manage a button, specifying if the pressure is long or not.
![Matrix button box, one key press recognized as four keys pressed sametime - Programming Questions - Arduino Forum Matrix button box, one key press recognized as four keys pressed sametime - Programming Questions - Arduino Forum](https://europe1.discourse-cdn.com/arduino/original/4X/f/2/c/f2c7202f19b022210276131d0a6e63d300f06ed9.png)
Matrix button box, one key press recognized as four keys pressed sametime - Programming Questions - Arduino Forum
GitHub - mathertel/OneButton: An Arduino library for using a single button for multiple purpose input.
![Arduino Button box: monentary pushbutton and key ignition, keypad problem - Project Guidance - Arduino Forum Arduino Button box: monentary pushbutton and key ignition, keypad problem - Project Guidance - Arduino Forum](https://europe1.discourse-cdn.com/arduino/original/4X/a/6/a/a6a185eaeb013690a09c635d4b1a5bf3bd4fca6f.png)