void setup() {
    // put your setup code here, to run once:
      Serial.begin(115200);
        Serial.println("Hello, ESP32!");
          pinMode(19, INPUT);
            pinMode(14,OUTPUT);
              pinMode(12, OUTPUT);
                pinMode(13, OUTPUT);
                }


                void loop() {
                int switchcase=digitalRead(19);
                if(switchcase == 1){
                while(switchcase==1){

                  int nes=digitalRead(19);
                    
                      if(nes==0){
                          break;
                            }  

                                digitalWrite(14, HIGH);
                                  delay(3000);
                                    digitalWrite(14, LOW);
                                      
                                        digitalWrite(12, HIGH);
                                          delay(3000);
                                            digitalWrite(12, LOW);

                                              digitalWrite(13, HIGH);
                                                delay(3000);
                                                  digitalWrite(13, LOW);

                                                    

                                                    }
                                                    }

                                                    else if(switchcase==0)
                                                    {
                                                      digitalWrite(14, LOW);
                                                        digitalWrite(12, LOW);
                                                          digitalWrite(13, LOW);
                                                          }
                                                            

                                                              // put your main code here, to run repeatedly:
                                                                //this speeds up the simulation
                                                                }