int trigpin=12;
int echopin=11;
float pingtraveltime;
float pingtraveldistance;
int distancetotarget;
void setup() {
  // put your setup code here, to run once:
Serial.begin(9600);
pinMode(trigpin,OUTPUT);
pinMode(echopin,INPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
digitalWrite(trigpin, LOW);
delayMicroseconds(10);
digitalWrite(trigpin, HIGH);
delayMicroseconds(10);
digitalWrite(trigpin, LOW);
delayMicroseconds(10);
pingtraveltime=pulseIn(echopin,HIGH);
pingtraveldistance=(pingtraveltime*765.*5280.*12.)/(3600.*1000000);
distancetotarget=pingtraveldistance/2;
delay(25);
Serial.println(pingtraveltime);

}