//Demo sketch
//This sketch will output distance into via the UART port
 
//port assignment
//change as may be necessary
 
const int trigger = 6;
const int echo = 7;
float distance;
 
void setup(){
  Serial.begin(9600);
  pinMode(trigger, OUTPUT);
  pinMode(echo, INPUT);
}
void loop(){
  
  //Trigger US-100 to start measurement
  //Set up trigger
  digitalWrite(trigger, LOW);
  delayMicroseconds(5);
  //Start Measurment
  digitalWrite(trigger, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigger, LOW);
  //Acquire and convert to mtrs
  distance = pulseIn(echo, HIGH);
  distance = distance*0.0001657;
  //send result to UART
  Serial.println(distance);
  delay(50);
}