All electronics is on simple one-side circuitboard. The sourcecode is opened. There's also simple javascript browser-based creator of animations for this device. You can create animations just by drawing with your mouse. The display also supports text mode.
When you have all graphics and texts ready. Just put them into "playlist" in the sourcecode and they will be played in loop.
Files
hubik_hw_sw_image_tool.zip
Eagle hardware, AVR software, Browser tool for animation creating