/* Keyboard Message test For the Arduino Leonardo and Micro. Sends a text string when a button is pressed. The circuit: * pushbutton attached from pin 4 to +5V * 10-kilohm resistor attached from pin 4 to ground created 24 Oct 2011 modified 27 Mar 2012 by Tom Igoe modified 11 Nov 2013 by Scott Fitzgerald This example code is in the public domain. http://www.arduino.cc/en/Tutorial/KeyboardMessage */ #include "Keyboard.h" const int buttonPin = 4; // input pin for pushbutton int previousButtonState = HIGH; // for checking the state of a pushButton int counter = 0; // button push counter void setup() { // make the pushButton pin an input: pinMode(buttonPin, INPUT); // initialize control over the keyboard: Keyboard.begin(); } void loop() { // read the pushbutton: int buttonState = digitalRead(buttonPin); // if the button state has changed, if ((buttonState != previousButtonState) // and it's currently pressed: && (buttonState == HIGH)) { // increment the button counter counter++; // type out a message Keyboard.print("You pressed the button "); Keyboard.print(counter); Keyboard.println(" times."); } // save the current button state for comparison next time: previousButtonState = buttonState; }