#include const int trigPin = 9; const int echoPin = 10; long duration; int distance; SoftwareSerial myserial(0, 1); // define the serial and the TX=1 and RX=0 void setup() { myserial.begin(9600); pinMode(trigPin, OUTPUT); // Sets the trigPin as an Output pinMode(echoPin, INPUT); // Sets the echoPin as an Input } void loop() { digitalWrite(trigPin, LOW); delayMicroseconds(2); // Sets the trigPin on HIGH state for 10 micro seconds digitalWrite(trigPin, HIGH); delayMicroseconds(10); digitalWrite(trigPin, LOW); // Reads the echoPin, returns the sound wave travel time in microseconds duration = pulseIn(echoPin, HIGH); // Calculating the distance distance= duration*0.034/2; // Prints the distance on the Serial Monitor myserial.write(distance);// send this char delay(100); }