// 2009 mlab.uiah.fi/paja
// Experiencing digital input

int switchPin = 6;
int valInt;

void setup(){
  Serial.begin(9600);
  //pinMode(switchPin, INPUT);    // sets the digital pin as input
}

void loop(){
  // digitalRead() returns 0(LOW) or 1(HIGH). HIGH means there is incoming 5V. 
  // LOW is 0V (GND). Parameter defines degital pin.
  pinMode(switchPin, INPUT);    // sets the digital pin as input
  valInt = digitalRead(switchPin);
  Serial.println(valInt);
  delay(100);
}