#include <LiquidCrystal_I2C.h>

#define I2C_ADDR   0x27
LiquidCrystal_I2C lcd(I2C_ADDR, 16, 2);

#define POT_PIN 3
int nilaiPotensio = 0;

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

void loop() {
  nilaiPotensio = analogRead(POT_PIN);
  nilaiPotensio = map(nilaiPotensio, 0, 1023, 0, 180);

  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print(nilaiPotensio);

  delay(100);
}