int curled=4;


void setup() {
  Serial.begin(115200);

  for(int i=4; i<=13; i++)
  {
    pinMode(i, OUTPUT);
  }

}

void loop() {
  int jy=analogRead(A0);
  Serial.print(jy);
  Serial.print("  ");

  if(jy<450 && curled<13)
  {    
    digitalWrite(curled, LOW);
    curled++;
    delay(100);
  } 
  if(jy>550 && curled>4)
  {    
    digitalWrite(curled, LOW);
    curled--;
    delay(100);
  } 
  digitalWrite(curled, HIGH);

  int pot=analogRead(A1);
  Serial.print(pot);
  Serial.print("  ");

  int ldr=analogRead(A2);
  Serial.print(ldr);
  Serial.print("  ");

  int sum=(ldr+pot)/2;
  int pled=map(sum, 0, 1023, 0, 255);

  Serial.print(pled);
  Serial.println("  ");

  analogWrite(6, pled);

  if(ldr<100)
  {
    digitalWrite(7, HIGH);
    delay(200);
    digitalWrite(7, LOW);
    delay(200);
  }
}