Arduino Number Guessing Game (4x4 Keypad + I2C LCD + Buzzer)

I'm thinking of a number from 1 to 100. Can you find it in 7 guesses or fewer? The Arduino picks a secret number, you type your guess on a **4x4 keypad** and send it with **#**. The **I2C LCD** says HIGHER or LOWER and shows the range left and your tries, while a **passive buzzer** gives each hint its own sound. The fewest-tries record is kept in **EEPROM**. A fun first game that uses a keypad and an LCD together.