const int BUTTON_PIN = 7;  // the number of the pushbutton pin
const int LED_PIN =  3;   // the number of the LED pin

int buttonState = 0;   // variable for reading the pushbutton status

void setup() {
 Serial.begin(9600);
  pinMode(LED_PIN, OUTPUT);
  // initialize the pushbutton pin as an pull-up input:
  // the pull-up input pin will be HIGH when the switch is open and LOW when the switch is closed.
  pinMode(BUTTON_PIN, INPUT_PULLUP);
}

void loop() {

  buttonState = digitalRead(BUTTON_PIN);


  if(buttonState == LOW) 
  {
    Serial.println("Light On");
    digitalWrite(LED_PIN, HIGH);
    delay(3000);

  }        
  else     
  {
    Serial.println("Light off");
    digitalWrite(LED_PIN, LOW);  
  }                     
    
delay(100); //let everything settle

}