Funky Ball

This idea came to me...I have no idea why.

A transparent or translucent ball with illumination inside so there is a glow when seen rolling down the sidewalk.

The tough part.

Only one side glows!

The tougher part.

That side is always NORTH !  ( or South depending on your politics )

So here we have a ball rolling down a dark path with the same side always illuminated.  It should appear as if it is floating down the path because the illuminated side never changes position.


One color on NORTH and one on South. 

Perhaps color changing RGB LED's?

Perhaps a "head light" always illuminating direction of travel with a tail light.

The illuminated side is always the side in the direction the ball is rolling.


Arduino and compass  or gyro/attitude shield?

Anyone ?