int contar=0;
void setup() {
 pinMode(18, OUTPUT);
 pinMode(16, OUTPUT);
 pinMode(17, OUTPUT);
 pinMode(15, OUTPUT);
 pinMode(32, OUTPUT);
 pinMode(33, OUTPUT);
 pinMode(27, INPUT);
 pinMode(12, OUTPUT);
 Serial.begin(115200);
}

void loop() {
  Serial.println(contar);

  if (digitalRead(27)==1)
  {
contar=contar+1;
delay(300);
  }
  if (contar==1)
  {
    digitalWrite(18, HIGH);
    digitalWrite(33, LOW);
  }
    if (contar==2)
    {
      digitalWrite(16, HIGH);
      digitalWrite(18, LOW);
      }
       if (contar==3)
    {
      digitalWrite(17, HIGH);
      digitalWrite(16, LOW);
      }
       if (contar==4)
    {
      digitalWrite(15, HIGH);
      digitalWrite(17, LOW);
      }
       if (contar==5)
    {
      digitalWrite(32, HIGH);
      digitalWrite(15, LOW);
      }
       if (contar==6)
    {
      digitalWrite(33, HIGH);
      digitalWrite(32, LOW);
      }
       if (contar==7)
    {
      digitalWrite(15, HIGH);
      digitalWrite(33, LOW);
      contar=0;
      }
     
}