#define TRIG_PIN 23
#define ECHO_PIN 22

void setup() {
  Serial.begin(115200);
  
  pinMode(TRIG_PIN, OUTPUT);
  pinMode(ECHO_PIN, INPUT);
  
  digitalWrite(TRIG_PIN, LOW);
  delay(1000);
}

void loop() {
  digitalWrite(TRIG_PIN, HIGH);
  delayMicroseconds(10);
  digitalWrite(TRIG_PIN, LOW);

  long duration = pulseIn(ECHO_PIN, HIGH);

  float distance = (duration / 2.0) * 0.0344;

  Serial.print("Distance: ");
  Serial.print(distance);
  Serial.println(" cm");
  
  delay(1000);
}