void setup() {                
  // initialize the digital pin as an output.
  pinMode(14, OUTPUT);     
  pinMode(15, OUTPUT);   
}

// the loop routine runs over and over again forever:
void loop() {
  /*Sentido de giro*/
  digitalWrite(14, HIGH);   // 
  digitalWrite(15, HIGH);   // 
  delay(12000);               // wait for a second
  
  /*Stop*/
  digitalWrite(14, HIGH);    //
  digitalWrite(15, LOW);   // 
  delay(1000);               // wait for a second
  
  /*Sentido de giro*/
  digitalWrite(14, LOW);    // 
  digitalWrite(15, LOW);   // 
  delay(12000);               // wait for a second
  
  /*Stop*/
  digitalWrite(14, LOW);    // 
  digitalWrite(15, HIGH);   // 
  delay(1000);               // wait for a second
}