void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  pinMode(12, OUTPUT);
  pinMode(5, OUTPUT);
  pinMode(14, OUTPUT);
  pinMode(16,INPUT);
}

void loop() {
  int sw = digitalRead(16);
  Serial.println("sw");
  if(sw == 1)
  {
   digitalWrite(14, HIGH);
  Serial.println("STOP");
  delay(1000);
  digitalWrite(14, LOW);
  digitalWrite(12, HIGH);
  Serial.println("ALART");
  delay(1000);
  digitalWrite(12, LOW);
  digitalWrite(5, HIGH);
  Serial.println("GO");
  delay(1000);
  digitalWrite(5, LOW);
  digitalWrite(12, HIGH);
  Serial.println("ALART");
  delay(1000);
  digitalWrite(12, LOW);
  }
  else{
     digitalWrite(12, LOW);
     digitalWrite(5, LOW);
     digitalWrite(14, LOW);
     digitalWrite(16, LOW);
  }

  // put your main code here, to run repeatedly:
  delay(10); // this speeds up the simulation
}