lightTest.ino

/*
  Blink
  Turns on an LED on for one second, then off for one second, repeatedly.

  Most Arduinos have an on-board LED you can control. On the Uno and
  Leonardo, it is attached to digital pin 13. If you're unsure what
  pin the on-board LED is connected to on your Arduino model, check
  the documentation at http://www.arduino.cc

  This example code is in the public domain.

  modified 8 May 2014
  by Scott Fitzgerald
 */
 const int pinA = 4;
 const int pinB = 5;
 const int pinC = 6;
 const int sensorPin = A0;
 
 const int waitTime = 3000; // in milliseconds

 float measurement;
 
// the setup function runs once when you press reset or power the board
void setup() {
  // initialize digital pin 13 as an output.
  pinMode(pinA, OUTPUT);
  pinMode(pinB, OUTPUT);
  pinMode(pinC, OUTPUT);

  //analogReference(EXTERNAL);

  Serial.begin(9600);
}

// the loop function runs over and over again forever
void loop() {

// all off
  digitalWrite(pinA, LOW);
  digitalWrite(pinB, LOW);
  digitalWrite(pinC, LOW);


  delay(waitTime);


// one on

  digitalWrite(pinA,HIGH);
  
delay(waitTime);

// two on

  digitalWrite(pinB,HIGH);
 
delay(waitTime);


// three on

  digitalWrite(pinC,HIGH);
  //measurement=lightSample();
  //Serial.println(measurement);

 
  delay(waitTime*2);
  
}