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);
 Serial.begin(115200);
}

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

      if(digitalRead(27)==1)
    {
    contar=contar+1;
    delay(300);
    }
    if (contar==1)
    {
    digitalWrite(18, HIGH);
    digitalWrite(15, 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);
       }



      contar=0;
       }