#define ECHOPIN 35
#define TRIGPIN 32
void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  pinMode(ECHOPIN, INPUT);
  pinMode(TRIGPIN, OUTPUT);
  Serial.println("Hello, ESP32!");
}

void loop() {
  digitalWrite(TRIGPIN, LOW);
  delayMicroseconds(2);
  digitalWrite(TRIGPIN, HIGH);
  delayMicroseconds(10);
  digitalWrite(TRIGPIN, LOW);
  float distance=pulseIn(ECHOPIN,HIGH);
  distance=distance/58;
  Serial.print(distance);
  Serial.println("cm");
  //delay(200)
}