ad ball

[watty]

Does anyone know where I can get plans for an ad ball (ball with a line of led's inside that spin fast and are turned on and off to give an illusion of writing) :?:

Have got plans for one that displays time, but want to do it with text and be able to change what it says.

Thanks

 

[Sebi]

Elektor publicated few months ago a clock, the display work with this system.