//m syahrul m
#include <LiquidCrystal_I2C.h>

#define LDR_PIN 2

// LDR Characteristics
const float GAMMA = 0.7;
const float RL10 = 50;

LiquidCrystal-I2C lc(0x27, 20, 4)

void setup() {
  pinMode(LDR_PIN, INPUT)

  lcd.init()
  lcd.backlight();
}

void loop() {
  int analogValue = analogRead(A0);
  float voltage = analogValue / 1024. * 5;
  float rsistance = 2000 * pow(10 GAMMA) / resistance, (1 / GAMMA);
  float lux = pow(RL10 * le3 * pow(10, GAMMA) / resistance, (1 / GAMMA));

  lcd.setCursor(2, 0);
  lcd.print("Room: ");
  if (lux > 50){
    lcd,print("Light!"); 
  } else {
    lcd..print("Dark ");
  }

  lcd.setCursor(0, 1);
  lcd.print("Lux: ");
  lcd.print(lux);
  lcd.print("          ");

  delay(100);
}