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

// Create an LCD object. Adjust the address (0x27) if necessary.
LiquidCrystal_I2C lcd(0x27, 16, 2); // 16 columns and 2 rows

// Button pin definitions (using pins 0-5)
const int button1Pin = 0;
const int button2Pin = 1;
const int button3Pin = 2;
const int button4Pin = 3;
const int button5Pin = 4;
const int button6Pin = 5;

void setup() {
  // Initialize the LCD with the correct number of columns and rows
  lcd.begin(16, 2);
  lcd.backlight();

  // Set button pins as input with internal pull-up resistors
  pinMode(button1Pin, INPUT_PULLUP);
  pinMode(button2Pin, INPUT_PULLUP);
  pinMode(button3Pin, INPUT_PULLUP);
  pinMode(button4Pin, INPUT_PULLUP);
  pinMode(button5Pin, INPUT_PULLUP);
  pinMode(button6Pin, INPUT_PULLUP);

  // Display initial message
  lcd.setCursor(0, 0);
  lcd.print("Press a Button");
}

void loop() {
  // Check each button and display the corresponding alphabet on the LCD
  if (digitalRead(button1Pin) == LOW) {
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("A");
    delay(300); // Wait to prevent rapid blinking
  } else if (digitalRead(button2Pin) == LOW) {
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("B");
    delay(300);
  } else if (digitalRead(button3Pin) == LOW) {
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("C");
    delay(300);
  } else if (digitalRead(button4Pin) == LOW) {
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("D");
    delay(300);
  } else if (digitalRead(button5Pin) == LOW) {
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("E");
    delay(300);
  } else if (digitalRead(button6Pin) == LOW) {
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("F");
    delay(300);
  }
}