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

LiquidCrystal_I2C lcd(0x27, 16, 2); // I2C address 0x27, 16 columns and 2 rows
const int buttonPin = 4; // Change to your button pin

void setup() {
    lcd.init();
    lcd.backlight();
    lcd.setCursor(0, 0);
    lcd.print("Press button!");
    pinMode(buttonPin, INPUT_PULLUP); // Set button pin as input with pull-up resistor
}

void loop() {
    if (digitalRead(buttonPin) == LOW) { // Button pressed
        int randomValue = random(2); // 0 or 1
        lcd.setCursor(0, 1);
        if (randomValue == 0) {
            lcd.print("Heads");
        } else {
            lcd.print("Tails");
        }
        delay(1000); // Delay for readability
        lcd.clear();
        lcd.setCursor(0, 0);
        lcd.print("Press button!");
    }
}