Ultrasonic Range Finder with Arduino

ultrasonic.ino

/* 

  @ Code for interfacing arduino with a Maxbotix LV-EZ4 Ultrasonic Range Finder
  @ Code by Daniel Spillere Andrade
  @ www.danielandrade.net    -=-   daniel@danielandrade.net

*/


int blinkLed=13;         // Where the led will blink
int sensorPin=0;         // Analog Pin In
int sum=0;  	 // Variable to calculate SUM
int avgrange=50;         // Quantity of values to average
int sensorValue;         // Value for te average
int i,media,d;           // Variables
float cm,inch;           // Converted to cm


void setup()
{
  Serial.begin(9600);   // To check what is being read on the Serial Port
}

void loop() {

    d=analogRead(sensorPin);            // Read the analog value
    digitalWrite(blinkLed,HIGH);        // Turn on LED
    delay(d);                           // Delay changes with the analogread
    digitalWrite(13,LOW);               // Turn off LED
    delay(d);	                        // Another delay
    
    cm = (d / 2) * 2.4;                 // Convert the value to centimeters
    inch = d/2;                         // Value in inches
    
    Serial.println(cm);                 //Print average of all measured values
    
    // This is the code if you want to make an average of the read values
    
     /* 
     
       for(i = 0; i < avgrange ; i++) {
	   sum+=analogRead(sensorPin);
	   delay(10);
	}

        media = sum/avgrange;
	Serial.println(media);  //Print average of all measured values
    
      sum=0;
      media=0;
   
    */
    
}