제가 사운드센서로 5개의 LED를 소리량에 따라 제어하고싶은데 문제점도 알려주시면 감사하겠습니다.

int val=0;
const int s=2;
const int ledPin=(13,12,11,10,9);
void setup()
{

  pinMode(13,OUTPUT);

  pinMode(12,OUTPUT);

  pinMode(11,OUTPUT);

  pinMode(10,OUTPUT);

  pinMode(9,OUTPUT);

  pinMode(s,INPUT);

  Serial.begin(9600); 

}

void loop() {
 
 
  val = analogRead(A0);
  Serial.println(val,DEC);

  if(val > 100) {

   digitalWrite(13,HIGH);

   digitalWrite(12,HIGH);

   digitalWrite(11,HIGH);

   digitalWrite(10,HIGH);

   digitalWrite(9,HIGH);

   delay(150);

  } 

  else if(val > 85 && val<=100) {

   digitalWrite(13,LOW);

   digitalWrite(12,HIGH);

   digitalWrite(11,HIGH);

   digitalWrite(10,HIGH);

   digitalWrite(9,HIGH);

   delay(150);

  }

  else if(val > 75 && val <=85) {

   digitalWrite(13,LOW);

   digitalWrite(12,LOW);

   digitalWrite(11,HIGH);

   digitalWrite(10,HIGH);

   digitalWrite(9,HIGH);

   delay(150);  

  }

  else if(val > 65 && val <=75) {

   digitalWrite(13,LOW);

   digitalWrite(12,LOW);

   digitalWrite(11,LOW);

   digitalWrite(10,HIGH);

   digitalWrite(9,HIGH);

   delay(150);  

  }

  else if(val > 55 && val <=65) {

   digitalWrite(13,LOW);

   digitalWrite(12,LOW);

   digitalWrite(11,LOW);

   digitalWrite(10,LOW);

   digitalWrite(9,HIGH);

   delay(150);

  }

  else if(val > 45 && val <55) {

   digitalWrite(13,LOW);

   digitalWrite(12,LOW);

   digitalWrite(11,LOW);

   digitalWrite(10,LOW);

   digitalWrite(9,LOW);

   delay(150);

  }

 
  delay(200);

}

이것이 짠 코딩입니다.