// Pin assignments
const int trigPin = 24;
const int echoPin = 25;

// Variables to store sensor readings
long duration;
int distance;

void setup() {
  // Start serial communication
  Serial.begin(9600);

  // Set the trigger and echo pin modes
  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);
}

void loop() {
  // Send a pulse to the ultrasonic sensor to trigger the measurement
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);

  // Measure the time it takes for the pulse to return
  duration = pulseIn(echoPin, HIGH);

  // Calculate the distance (in cm)
  distance = duration * 0.0344 / 2;

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

  // Map the distance to the corresponding level percentage
  if (distance <= 100) {
    Serial.println("Level: 25% (Low)");
  } else if (distance <= 200) {
    Serial.println("Level: 50%");
  } else if (distance <= 300) {
    Serial.println("Level: 75%");
  } else if (distance <= 400) {
    Serial.println("Level: 100% (Full)");
  } else {
    Serial.println("Out of Range");
  }

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