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

#define TRIG_PIN 9
#define ECHO_PIN 10

// Set the LCD address to 0x27 or 0x3F depending on your module
LiquidCrystal_I2C lcd(0x27, 16, 2);

void setup() {
  Serial.begin(9600);
    pinMode(TRIG_PIN, OUTPUT);
      pinMode(ECHO_PIN, INPUT);

        lcd.begin();
          lcd.backlight();
            lcd.setCursor(0, 0);
              lcd.print("Distance Sensor");
              }

              void loop() {
                long duration;
                  float distance;

                    // 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 * 0.0343 / 2;

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

                                                  delay(500);
                                                  }