//Muhammad Abi Rafdi XI TEK 2
//Program Mendeteksi Cahaya LCD Displayed

#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C layar(0x27,16,2);
int data;

void setup() {
  // put your setup code here, to run once:
  pinMode(13, INPUT);
  Serial.begin(9600);
  layar.init();
  layar.backlight();
  layar.clear();

}

void loop() {
  // put your main code here, to run repeatedly:
  data = analogRead(13);
  Serial.print("data analog = ");
  Serial.println(data);
  layar.setCursor(0,0);
  layar.print("PENDETEKSICAHAYA");
  if(data <= 1000){
    layar.setCursor(0,1);
    layar.print("  ADA CAHAYA    ");
  }else{
    layar.setCursor(0,1);
    layar.print("TIDAK ADA CAHAYA");
  }
}