#include <LiquidCrystal_I2C.h>

const int potPin = A0;  
const int ledPin = 3;  
const int address = 0x27; 

LiquidCrystal_I2C lcd(address, 16, 2); 

void setup() {
  pinMode(ledPin, OUTPUT);
  lcd.init();
  lcd.backlight();
}

void loop() {
  int potValue = analogRead(potPin);  // Baca nilai potensiometer
  int brightness = map(potValue, 0, 1023, 0, 255);  // Map nilai potensiometer ke nilai kecerahan LED

  analogWrite(ledPin, brightness);  // Atur kecerahan LED

  int percentage = map(potValue, 0, 1023, 0, 100);  // Hitung persentase perputaran potensiometer

  lcd.clear();  // Bersihkan layar LCD
  lcd.setCursor(0, 0);
  lcd.print("Persentase: ");
  lcd.setCursor(0,1);
  lcd.print(percentage);
  lcd.print("%");

  delay(100);  // Tunda untuk stabilitas tampilan
}