Parallax Ping)) with arduino darylrobotproject.wordpress.com

int PingPin = A3;
int BaudRate = 9600;

void setup() {

  Serial.begin(BaudRate);

}

void loop() {

  pinMode(PingPin, OUTPUT);
  digitalWrite(PingPin, LOW);  // init sensor to ensure clean HIGH pulse
  delayMicroseconds(2);
  digitalWrite(PingPin, HIGH);  // make the sensor send a pulse
  delayMicroseconds(5);
  digitalWrite(PingPin, LOW);  // Set LOW again
  pinMode(PingPin, INPUT);  // Get ready to capture the duration of the resulting pulse
  // Capture how long the pin stays in HIGH state.
  unsigned long Duration = pulseIn(PingPin, HIGH);

  if (Duration == 0) {
    Serial.println("No Pulse received from the sensor");
  } else  {
    Serial.print("Distance : ");
    Serial.print(Convert_Time_Space(Duration));  // convert the duration into distance
    Serial.println(" cm");
  }
  //delay (1000) ;
}

unsigned long Convert_Time_Space(const unsigned long fnDuration ) {
  // This function could be more precise by using floats
  // and taking into account temperature and humidity
  // I used 29 microseconds per cm.
  return fnDuration / 29 / 2 ;
}