#include <Wire.h>
#include <LiquidCrystal_I2C.h>

#define TRIG_PIN 7
#define ECHO_PIN 6

LiquidCrystal_I2C lcd(0x27, 16 , 2); // Adjust the address if necessary

void setup() {
  lcd.init();
  lcd.backlight();

  pinMode(TRIG_PIN, OUTPUT);
  pinMode(ECHO_PIN, INPUT);

  lcd.setCursor(0, 0);
  lcd.print("Distance:");

  Serial.begin(9600); // Optional for serial output
}

void loop() {
  long duration;
  float distance;

  // Send trigger pulse
  digitalWrite(TRIG_PIN, LOW);
  delayMicroseconds(2);
  digitalWrite(TRIG_PIN, HIGH);
  delayMicroseconds(10);
  digitalWrite(TRIG_PIN, LOW);

  // Read echo pulse
  duration = pulseIn(ECHO_PIN, HIGH);

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

  // Display on LCD
  lcd.setCursor(0, 1);
  lcd.print("Dist: ");
  lcd.print(distance);
  lcd.print("cm ");

  delay(500); // Wait before next measurement
}