#define TRIG_PIN 12 // Trigger pin
#define ECHO_PIN 13 // Echo pin

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

void loop() {
  // Send a 10-microsecond pulse to trigger pin
  digitalWrite(TRIG_PIN, LOW);
  delayMicroseconds(2);
  digitalWrite(TRIG_PIN, HIGH);
  delayMicroseconds(10);
  digitalWrite(TRIG_PIN, LOW);

  // Measure the duration of the echo pulse
  long duration = pulseIn(ECHO_PIN, HIGH);

  // Calculate distance (in cm)
  float distance = duration * 0.034 / 2;

  // Print the distance
  Serial.print("Distance: ");
  Serial.print(distance);
  Serial.println(" cm");

  // Check if an object (can) is detected
  if (distance < 5) { // Adjust threshold as needed
    Serial.println("Can detected!");
  } else {
    Serial.println("No can detected.");
  }

  delay(1000); // Wait for 1 second before the next reading
}