// PROGRAM : Ultrasonic Distance measurement...

int echo = 0;
int Signal = 8;
int Value = 0;

void setup()
{
  Serial.begin(9600);
  pinMode(Signal,OUTPUT);
}

int Ultrasonic()
{
  pinMode(Signal, OUTPUT);
  digitalWrite(Signal, LOW);
  delay(2000);
  digitalWrite(Signal, HIGH);
  delay(5000);
  digitalWrite(Signal, LOW);
  pinMode(Signal, INPUT);
  digitalWrite(Signal, HIGH); // Turn on pullup resistor
  echo = pulseIn(Signal, HIGH);
  Value = (echo / 58) * 0.39; //convert to CM then to inches
  return Value;
}

void loop()
{
  int x = 0;
  x = Ultrasonic();
  Serial.println(x);
}