#include <Wire.h>
#include <LiquidCrystal_I2C.h>

#define BUTTON_PIN 4   // artık touch değil buton
#define LED_PIN 5

LiquidCrystal_I2C lcd(0x27, 16, 2);

void setup() {
  Serial.begin(115200);

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

  pinMode(LED_PIN, OUTPUT);
  pinMode(BUTTON_PIN, INPUT_PULLUP); // önemli!

  lcd.setCursor(0,0);
  lcd.print("Hazir...");
}

void loop() {
  int buttonState = digitalRead(BUTTON_PIN);

  // BUTON BASILINCA = LOW
  if (buttonState == LOW) {
    digitalWrite(LED_PIN, HIGH);
    lcd.setCursor(0,0);
    lcd.print("Dokunuldu!   ");
  } else {
    digitalWrite(LED_PIN, LOW);
    lcd.setCursor(0,0);
    lcd.print("Hazir...     ");
  }

  delay(100);
}