int binario [8]={15,2,4,5,18,19,21,22},potenciometro=13;
void setup(){
  for(int i=0;i<8;i++){
    pinMode(binario[i],OUTPUT);
  }
  pinMode(13, INPUT);
}
void loop(){
  potenciometro=analogRead(13)/16;
  for(int i=0;i<8;i++){
    if (potenciometro %2 ==0){
      digitalWrite(binario[i], LOW);
    }
    else{
      digitalWrite(binario[i], HIGH);
    }
    potenciometro=potenciometro/2;
  }
  delay(100);
}