   photoresistor_analog_readings[4] = analogRead(A4);
   photoresistor_analog_readings[5] = analogRead(A5);
   
-  //Loop through the photoresistor readings
+  //Display the photoresistor readings
   for(int i=0;i<6;i++){
-    //print 1 to serial and write LED high if black line
     if(photoresistor_analog_readings[i] < THRESHOLDS[i]){
       Serial.print("1 ");
       digitalWrite(i+2,HIGH);
     }
-    //print 0 to serial and write LED low otherwise
     else {
       Serial.print("0 ");
       digitalWrite(i+2,LOW);
     }
   }
-  //Create a new line
   Serial.print("\n");
   
   //wait a 30 miliseconds

  pinMode(A4,INPUT);
  pinMode(A5,INPUT);
  
  //set up digital outputs
  pinMode(2,OUTPUT);
  pinMode(3,OUTPUT);
  pinMode(4,OUTPUT);


//loop repeats continuously
void loop(){
  
  int photoresistor_analog_readings[6];
  
  // Read the photoresistor pins
  photoresistor_analog_readings[0] = analogRead(A0);
  photoresistor_analog_readings[1] = analogRead(A1);
  photoresistor_analog_readings[2] = analogRead(A2);
