unsigned long lastMillis = millis();
		  unsigned long attesa = 10000;

		  //ALZO LA TAPPARELLA
          if (readString.indexOf("su1") > 0) {
            digitalWrite(D5, HIGH);
            digitalWrite(D6, LOW);
            if ((millis() - lastMillis) >= attesa) {
              lastMillis = millis();
              digitalWrite(D5, LOW);
              client.println("su");
            }
          }