#include <LiquidCrystal.h>

const int buttonPin = 8;
const int ledPin = 7;
const int trigPin = 5;
const int echoPin = 6;

LiquidCrystal lcd(10, 9, 13, 12, 11, 3);

void setup() {
  Serial.begin(9600);
  pinMode(buttonPin, INPUT);
  pinMode(ledPin, OUTPUT);
  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);
  lcd.begin(16, 2); // Initialize LCD with 16 columns and 2 rows
}

void loop() {
  int buttonState = digitalRead(buttonPin);

  if (buttonState == HIGH) {
    digitalWrite(ledPin, HIGH);
    tone(6, 500, 500);
  } else {
    digitalWrite(ledPin, LOW);
  }

  if (digitalRead(ledPin) == HIGH) {
    long duration, distance;

    digitalWrite(trigPin, LOW);
    delayMicroseconds(2);
    digitalWrite(trigPin, HIGH);
    delayMicroseconds(10);
    digitalWrite(trigPin, LOW);

    duration = pulseIn(echoPin, HIGH);

    distance = duration * 0.034 / 2;

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

    lcd.clear(); // Clear the LCD display
    lcd.setCursor(0, 0); // Set cursor to the beginning of the first line
    lcd.print("Distance: "); // Print label
    lcd.print(distance); // Print distance value
    lcd.print(" cm"); // Print units

    delay(1000);
  }
}