dist.ino

dist.ino

const int ECHO_PIN = 6;
const int TRIG_PIN = 5;

long duration;
int distance;

void setup() {
  pinMode(TRIG_PIN, OUTPUT);
  pinMode(ECHO_PIN, INPUT);
  
  Serial.begin(115200);
  while (!Serial) {
    delay(10);
  }
}

void loop() {
  // Clears the trigPin condition
  digitalWrite(TRIG_PIN, LOW);
  delayMicroseconds(2);
  // Sets the trigPin HIGH (ACTIVE) for 10 microseconds
  digitalWrite(TRIG_PIN, HIGH);
  delayMicroseconds(10);
  digitalWrite(TRIG_PIN, LOW);
  // Reads the echoPin, returns the sound wave travel time in microseconds
  duration = pulseIn(ECHO_PIN, HIGH);
  // Calculating the distance
  distance = duration * 0.034 / 2; // Speed of sound wave divided by 2 (go and back)

  // Displays the distance on the Serial Monitor
  Serial.print("Distance: ");
  Serial.print(distance);
  Serial.println(" cm");
}