/*
 Voltaat learn (http://learn.voltaat.com/)
 Link for full tutorial:

 Tutorial: Display the state of a push button using Arduino

 The purpose of this sketch is to control the Arduino's internal LED using the push button.
 We will also use the Arduino to print the push button status
 as well as its digital read directly on your computer.

 Connections from the push button:
 • First pin→ Breadboard 5v line
 • Second pin→ Arduino pin 2
 • Second pin→10KΩ resistor → Breadboard GND line

*/

//Define the variable pushButton to Digital Input Pin 2
const int pushButton = 2;
//Define the variable buttonState
int buttonState;


//Commands inside void setup run once
void setup() {
 //Start the serial monitor at 9600 baud rate (9600 bits per second)
 Serial.begin(9600);
 //pushButton is defined as an input
 pinMode(pushButton, INPUT);
 //Arduino builtin led is defined as an output
 pinMode(LED_BUILTIN, OUTPUT);
}

//Commands inside void loop run forever
void loop() {

 //Read the value of digital input from pushButton and assign it in the variable buttonState
 buttonState = digitalRead(pushButton);
 if (buttonState == HIGH)
 {
   //Turn on the arduino builtin led
   digitalWrite(LED_BUILTIN, HIGH);
   //Print to serial monitor
   Serial.print("Push Button is pressed ");
   Serial.print("| Button state: ");
   Serial.println(buttonState);
   //Delay for one millisecond for more stability
   delay(1);
 }
 else
 {
   //Turn off the arduino builtin led
   digitalWrite(LED_BUILTIN, LOW);
   //Print to serial monitor
   Serial.print("Push Button is released ");
   Serial.print("| Button state: ");
   Serial.println(buttonState);
   //Delay for one millisecond for more stability
   delay(1);
 }
}