Master clocks at schools are essential devices that synchronize peripheral clocks so they ring bells at same time. Thos project is a complete replacement of master clock with necessary features in order to run school life smoothly.
Project is based on Arduino Duemilanove that is connected to computer to synchronize time via Java based application. Project is kept as simple as possible with functions needed to ensure necessary function to be accessible. It has a switch to turn automatic bells on or off. Also it has an LCD screen where you can see time and status info, and three LEDs for fast indication of battery, bells status and power. So, why buy expensive systems – amaze principal with cheap solution.