Exercise 1 Solution

int buttonState = 0;
int LEDPin = 11;

void setup()
{
  // initialize pin 2 as input and pin 11 as output
  pinMode(2, INPUT);  
  pinMode(LEDPin, OUTPUT);
}

void loop()
{
  buttonState = digitalRead(2); // read the button
  if (buttonState == HIGH) {
    // do something - here we just blink the LED
    digitalWrite(LEDPin, HIGH);
    delay(500);
    digitalWrite(LEDPin, LOW);
    delay(500);
  }
}