int trig = 27;
int echo = 26;
int distance;



void setup() {

  // put your setup code here, to run once:
  Serial.begin(115200);
  pinMode(trig, OUTPUT);
  pinMode(echo, INPUT);
  pinMode(25,OUTPUT);
  pinMode(12, OUTPUT);
  pinMode(14, OUTPUT);
  pinMode(25, OUTPUT);
  Serial.println("Hello, ESP32!");
}

void loop() {
  digitalWrite(trig, HIGH);
  delay(100);
  digitalWrite(trig, LOW);
  int reading = pulseIn(echo,HIGH);
  distance = (reading * 0.034/2);
  Serial.println(distance);
  if(distance  >300)
  {
   


   digitalWrite(12, HIGH);
   digitalWrite(14, LOW);
   digitalWrite(25, LOW);
  }
  else if(  distance > 200)
  {
    digitalWrite(14, HIGH);
    digitalWrite(25, LOW);
    digitalWrite(12, LOW);
  }
  else{
    digitalWrite(25, HIGH);
    digitalWrite(14, LOW);
    digitalWrite(12, LOW);

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