#include <LiquidCrystal_I2C.h>

#define LDR_PIN A0

LiquidCrystal_I2C lcd(0x27, 16, 2);

void setup() {
  lcd.init();
  lcd.backlight();
  lcd.setCursor(0, 0);
  lcd.print("Sensor Cahaya");
  lcd.setCursor(0, 1);
  lcd.print("Inisialisasi...");
  delay(2000);
  lcd.clear();
}

void loop() {
  int nilaiLDR = analogRead(LDR_PIN);

  // Tampilkan nilai LDR dengan padding
  lcd.setCursor(0, 0);
  lcd.print("Cahaya: ");
  lcd.print(nilaiLDR);
  lcd.print("   "); // Bersihkan sisa teks

  // Tentukan kondisi cahaya
  lcd.setCursor(0, 1);
  if (nilaiLDR < 300) {
    lcd.print("Keadaan: Gelap   ");
  } else if (nilaiLDR < 700) {
    lcd.print("Keadaan: Redup   ");
  } else {
    lcd.print("Keadaan: Terang  ");
  }

  delay(1000);
}