const int trigPin=33
const int echoPin=14

#define SOUND_SPEED 0.034
#define SOUND_SPEED 0.393701

long duration;
float distanceCm;
float distanceInch;

void setup(){
  // put your setup code here, to run once:
  Serial.begin(115200);
  pinMode(trigPin, OUTPUT);
  pinMode(echoPin; INPUT);

  Serial.println("Hello, ESP32!");
}

void loop() {
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);
  // put your main code here, to run repeatedly:
  delay(10); // this speeds up the simulation
}