// defines pins numbers const int trigPin = 2; const int echoPin = 3; //const int trigPin2 = 3; //const int echoPin2 = 2; // defines variables long duration; //long duration2; int distance1; //int distance2; void setup() { pinMode(trigPin, OUTPUT); // Sets the trigPin as an Output pinMode(echoPin, INPUT); // Sets the echoPin as an Input //pinMode(trigPin2, OUTPUT); // Sets the trigPin as an Output //pinMode(echoPin2, INPUT); // Sets the echoPin as an Input Serial.begin(9600); // Starts the serial communication } void loop() { // Clears the trigPin digitalWrite(trigPin, LOW); //digitalWrite(trigPin2, LOW); delayMicroseconds(2); // Sets the trigPin on HIGH state for 10 micro seconds digitalWrite(trigPin, HIGH); //digitalWrite(trigPin2, HIGH); delayMicroseconds(10); digitalWrite(trigPin, LOW); //digitalWrite(trigPin2, LOW); // Reads the echoPin, returns the sound wave travel time in microseconds duration = pulseIn(echoPin, HIGH); //duration2 = pulseIn(echoPin2, HIGH); // Calculating the distance distance1= duration/5.5; //distance2= duration2/5.5; // Prints the distance on the Serial Monitor Serial.write (distance1); //Serial.println(distance1); delay (15); }