# define LED_PIN 13 // SET A VARIABLE TO STORE THE LED STATE bool ledState = LOW # define BUTTON_PIN 39 // DEFINE THE PIN FOR THE LED : // 1) SOME BOARDS HAVE A DEFAULT LED (LED_BUILTIN) //#define LED_PIN LED_BUILTIN // 2) OTHERWISE SET YOUR OWN PIN WE WILL attach() THE BUTTON TO THE FOLLOWING PIN IN setup() # include // INSTANTIATE A Button OBJECTīounce2::Button button = Bounce2::Button() */ // Include the Bounce2 library found here : // Set LED_PIN to the pin attached to a LED. INSTRUCTIONS = Set BUTTON_PIN to the pin attached to the button. setPressedState(LOW or HIGH) to set the detection state for when the button is pressed. The Button class matches an electrical state to a physical action. When the user presses a physical button, it toggles a LED on or off. * DESCRIPTION = This is an example of the Bounce2::Button class. Please note that the original version of this library (Bounce 1) is included in the 'extras' folder of the download but not supported anymore. Install through your software's Library Manager or download the latest version here and put the 'Bounce2' folder in your 'libraries' folder. Button : A special version of Bounce for buttons that are pressed.It links the Debouncer to a hardware pin on your board. Bounce : This is the general use library.Only advanced users should play with this class. Debouncer : The code that does the actual debouncing.The library is composed of three classes: See the bottom of this page for a basic usage example and the 'examples' folder for more. John Errington's Experiments with an Arduino : Using digital inputs: Switch bounce and solutions to it.This library filters out these undesired state changes. Debouncing library for Arduino and Wiring by Thomas Ouellet Fredericks with many contributions from the community : īasically, the mechanical part of buttons and switches vibrate slightly when closed or opened causing multiple undesired false states (similar to noise).

Arduino push button wiring