#define PIN_TRIG 4
#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);

  // put your main code here, to run repeatedly:
  int duration = pulseIn(PIN_ECHO, HIGH);
  Serial.print("Distance : ");
  Serial.println(Distance);
  

  delay(1000);
}