/* Using Arduino for Citizen Science!
   Project 3: Simple Analog Sensors: Photoresistor, aka light sensor!
      Connect  one lead of your sensor to the 5V power out.
      Connect one resistor lead to the remaining sensor lead, 
           and the other resistor lead to GND.
      Connect a jumper wire between the sensor lead and the resistor to A0.
     
 Written by jenfoxbot <jenfoxbot@gmail.com>
 Code is MIT license (non-commercial open-source)
*/

//Set up our (global) variables to store the sensor pin
// and the sensor reading
int sensorPin = A0;
int sensorReading;

void setup() {
  // put your setup code here, to run once:
  //Initialize the serial monitor (aka "window" into Arduino board)
  Serial.begin(9600); 

  //Tell the Arduino what pin(s) to use
  pinMode(sensorPin, INPUT);

}

void loop() {
  // put your main code here, to run repeatedly:
  //1) Read the status of the sensor (1 = signal, 0 = no signal)
  sensorReading = analogRead(sensorPin);

  //2) Print the sensor value
  Serial.println(sensorReading);

  //3) Add a small delay so we can keep up w/ those readings
  delay(100);

}