Solar panel sun tracker

int sensorPin0 = A0;
int sensorValue0 = 0;
int sensorPin1 = A1;
int sensorValue1 = 0;
int sensorPin2 = A2;
int sensorValue2 = 0;
int sensorPin3 = A3;
int sensorValue3 = 0;
int left = 0;
int right = 0;
int up = 0;
int down = 0;
int ledPin3 = 10;
int ledPin4 = 11;
int ledPin5 = 8;
int ledPin6 = 9;


void setup()
{
  Serial.begin(9600);
  pinMode(ledPin3, OUTPUT);
  pinMode(ledPin4, OUTPUT);
  pinMode(ledPin5, OUTPUT);
  pinMode(ledPin6, OUTPUT);
}

void loop() {
  ////////////////////////////////////////////////////// Set all relays low
digitalWrite(ledPin3, HIGH);
digitalWrite(ledPin4, HIGH);
digitalWrite(ledPin5, HIGH);
digitalWrite(ledPin6, HIGH);

  ////////////////////////////////////////////////////// Read Orange Input
  sensorValue0 = analogRead(sensorPin0);
  delay(1000);

  // Serial.print  ("orange - sensor 0 = ");
  // Serial.println  (sensorValue0);

  /////////////////////////////////////////////////////// Read Yellow Input
  sensorValue1 = analogRead(sensorPin1);
  delay(1000);

  // Serial.print  ("yellow - sensor 1 = ");
  sensorValue1 = (sensorValue1 + 26); //////compensation for LDR, tweak as necessary
  // Serial.println  (sensorValue1);

  //////////////////////////////////////////////////////// Read Blue Input
  sensorValue2 = analogRead(sensorPin2);
  delay(1000);

  // Serial.print  ("blue - sensor 2 = ");   //////compensation for LDR, tweak as necessary
  // Serial.println  (sensorValue2);

  //////////////////////////////////////////////////////// Read Green Input
  sensorValue3 = analogRead(sensorPin3);
  delay(1000);

  sensorValue3 = (sensorValue3 + 25);

  // Serial.print  ("green - sensor 3 = ");  //////compensation for LDR, tweak as necessary
  // Serial.println  (sensorValue3);

  // Serial.println ("");

  ////////////////////////////////////////////////////////Move Left?
  left = (sensorValue1 - sensorValue3);
  // Serial.print  ("left = ");
  // Serial.println  (left);

  if (left > 3)   ///// 3 = threshold value.  Lower number will cause more movements and increase twitching
  {
    // Serial.println ("Move Motor Left");
    digitalWrite(ledPin3, LOW);
    delay(75);
    digitalWrite(ledPin3, HIGH);
  }

    delay(1000);

  ////////////////////////////////////////////////////////Move Right?
  right = (sensorValue3 - sensorValue1);
  // Serial.print  ("right = ");
  // Serial.println  (right);

  if (right > 3)   ///// 3 = threshold value.  Lower number will cause more movements and increase twitching
  {
    // Serial.println ("Move Motor Right");
    digitalWrite(ledPin4, LOW);
    delay(75);
    digitalWrite(ledPin4, HIGH);
  }
    delay(1000);
  ////////////////////////////////////////////////////////Move Up?
  up = (sensorValue0 - sensorValue2);
  // Serial.print  ("up = ");
  // Serial.println  (up);

  if (up > 3)   ///// 3 = threshold value.  Lower number will cause more movements and increase twitching
  {
    // Serial.println ("Move Motor Up");
    digitalWrite(ledPin5, LOW);
    delay(500);
     digitalWrite(ledPin5, HIGH);
  }
    delay(1000);
  ////////////////////////////////////////////////////////Move Down?
  down = (sensorValue2 - sensorValue0);
  // Serial.print  ("down = ");
  // Serial.println  (down);

  if (down > 3)   ///// 3 = threshold value.  Lower number will cause more movements and increase twitching
  {
    // Serial.println ("Move Motor Down");
    digitalWrite(ledPin6, LOW);
    delay(500);
      digitalWrite(ledPin6, HIGH);
  }
    delay(1000);



}