The previous student who has done my project has circuit that shows a red LED will turn on when 10cm the alert mode is active, and the two red LED will turn on when 20cm the warning mode is active, the last emergency mode will active when the water level reached 30cm, the buzzer will turn on, and the 7 segment will display 30cm.Now I need to do advance of this project. But i have no idea of how to do differently from the previous student. Can you give me some ideas what can be included or do differently from the previous student ?