Roku Whiteboard Drawing App

A video on youtube demonstrates a Roku whiteboard drawing app. The author draws on an Android tablet and the tv syncs with a server to show the changes. He has posted the code on github. I hope to browse the source code in the future.

8x8x8 LED Cube

I'm looking into building a box with an LED array. An example of one in action is a video on youtube that demonstrates an Asteroids game on an 8x8x8 cube. Right now I need to determine what kind of power supply to get to attach to a driver board, like a rainbowduino. It looks like 9V is recommended for that particular LED driver platform, but it accepts a range of voltages. Also I will need a shield with buttons to control the lights and an Arduino uno to connect the shield with the LED driver.