Airsoft Bomb Arduino - Stage #1

First part of Airsoft Bomb Arduino Project - "Password Mode". More stuff on anycomponents.fnhost.org, List of component used: - LCD 16x2 Blue with I2c interface; - 4x4 parallel driving keypad; - PCF8574P IC (for I2C drive keypad); - LED - green color; - 5v Active Buzzer; - Arduino Uno Development Board;