#define TRIG 3
#define ECHO 2

void setup() {
  Serial.begin(115200);
  pinMode(TRIG, OUTPUT);
  pinMode(ECHO, INPUT);
}

void loop() {
  digitalWrite(TRIG, HIGH);
  delayMicroseconds(10);
  digitalWrite(TRIG, LOW);
  int duration = pulseIn(ECHO, HIGH);
  Serial.print("Distance in CM: ");
  Serial.print(duration / 58);
  Serial.println(" centimeters");
  Serial.print("Distance in inches: ");
  Serial.print(duration / 148);
  Serial.println(" inches");
  delay(1000);
}