/* Button Turns on and off a light emitting diode(LED) connected to digital pin 13, when pressing a pushbutton attached to pin 2. The circuit: - LED attached from pin 13 to ground - pushbutton attached to pin 2 from +5V - 10K resistor attached to pin 2 from ground - Note: on most Arduinos there is already an LED on the board attached to pin 13. created 2005 by DojoDave modified 30 Aug 2011 by Tom Igoe This example code is in the public domain. http://www.arduino.cc/en/Tutorial/Button // Modified on 22.06.2018 by Behnaz Norouzi */ // constants won't change. They're used here to set pin numbers: const int buttonPin = 7; // the number of the pushbutton pin const int ledPin = 8; // the number of the LED pin // variables will change: int buttonState; // variable for reading the pushbutton status const int slowBlink = 1000; //variable for more delay const int fastBlink = 25; //variable for less delay void setup() { // initialize the LED pin as an output: pinMode(ledPin, OUTPUT); // initialize the pushbutton pin as an input: pinMode(buttonPin, INPUT); } void loop() { // read the state of the pushbutton value: buttonState = digitalRead(buttonPin); if (buttonState == HIGH) { // check if the pushbutton is high digitalWrite(ledPin, HIGH); // turn LED on delay (slowBlink); // have a delay of 1000 digitalWrite(ledPin, LOW); // turn LED off delay (fastBlink); // have a delay of 25 }else{ digitalWrite(ledPin, LOW); // turn LED on } }