#define PIN_TRIG 3
#define PIN_ECHO 2
void setup(){
  Serial.begin(115200);
  pinMode(PIN_TRIG,OUTPUT);
  pinMode(PIN_ECHO, INPUT);

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