int led[]={0,1,2,3,4,5,6,7};
int mtime=0;
int t;
int pot=A0;
int potdurum;
int ctime;

void setup() {
  // put your setup code here, to run once:
for(int i =0; i<8; i++){
  pinMode(i, OUTPUT);
}
Serial.begin(9600);
}

void loop() {
  // put your main code here, to run repeatedly:
ctime=millis();
for(int i=0; i<8;i++){
 if(ctime- mtime>t){
  digitalWrite(led[i], LOW);
    if(i==8){
      i==0;
    }
   mtime=millis();
  }
}

  for(int i=0;i<8;i++){
    potdurum = analogRead(A0);
    potdurum = map (potdurum, 0, 1023, 50, 2000);
    digitalWrite(led[i],HIGH);
    delay(potdurum); 
    digitalWrite(led[i],LOW);  
  }
  
}