int trigPin = 11;  
int echoPin = 10; 
float duration, distance;
void setup() {
  pinMode(trigPin, OUTPUT);  
	pinMode(echoPin, INPUT);  
	Serial.begin(9600); 

 
}

void loop() {
   digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);

  duration = pulseIn(echoPin, HIGH);
  distance = (duration*.0343)/2;
  Serial.print("Distance: ");
  Serial.println(distance);
  delay(100);

}