#include <LiquidCrystal_I2C.h>
#define I2C_ADDR   0x27 
#define LCD_COLUMNS 16
#define LCD_LINES 2
//                 0x27-0x3F
   LiquidCrystal_I2C lcd(I2C_ADDR, LCD_COLUMNS,LCD_LINES);

 float gerilim=0;
 int olcumucu=0;
 float deger=0;
 float volt=0;
 void setup(){
 pinMode(8, OUTPUT);
 pinMode(10, OUTPUT);
 Wire.begin(12,13);
 lcd.init();
 lcd.backlight();
 pinMode(olcumucu,INPUT);
 }

void loop(){
lcd.clear();
gerilim=analogRead(olcumucu);
volt=(gerilim*5)/4096,  // 12 bit çözünürlük
lcd.print("Gerilim = ");
lcd.print(gerilim);
lcd.setCursor(0,1);
lcd.print("Volt = ");
lcd.print(volt);

delay(1000); // this speeds up the simulation
}