#include <LiquidCrystal_I2C.h>
#define I2C_ADOR   0x27
#define LCD_COLUMNS 16
#define LCD_LINES  2
//                   0x27-0x3f
LiquidCrystal_I2C lcd(I2C_ADOR, 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);
}