#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27, 16, 2);

const int p = 2;
const int led = 3;

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

  pinMode(p, INPUT);
  pinMode(led, OUTPUT);

}

void loop() {
  int R = digitalRead(p);

  lcd.setCursor(0, 0);

  if(R == 1) {
    digitalWrite(led, HIGH);
    lcd.println("TERDETEKSI           ");
  } else {
    digitalWrite(led, LOW);
    lcd.println("TIDAK TERDETEKSI          ");
  }
delay(200);
}