Arduino LCM 1602 Anduino / Uno

Pinout:

GND => GND
VCC => 5V
SDA => A4
SCL => A5

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



#define BACKLIGHT_PIN     13

// LiquidCrystal_I2C lcd(0x27);  // Set the LCD I2C address

LiquidCrystal_I2C lcd(0x27,16,2);  // set the LCD address to 0x27 for a 16 chars and 2 line display


void setup()
{
  // Switch on the backlight
  pinMode ( BACKLIGHT_PIN, OUTPUT );
  digitalWrite ( BACKLIGHT_PIN, HIGH );
   lcd.init();

  lcd.begin(16,2);

 lcd.clear();
 lcd.backlight();
  lcd.setCursor(0,0); //Start at character 0 on line 0
  lcd.print("Welcome ");
  lcd.setCursor(0,1);
  lcd.print("to the I2C LCD");
  // lcd.noBacklight();

}

void loop()
{
   delay (200);
}