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Funky Ball Challange Answered

Funky Ball Idea.

I had a crazy idea pop into my head last night.  These things happen.

I call it Funky Ball.  I am not quite up to the task at the moment as I have my hands full of several other projects. I consider my ideas "Open Source" so hope someone with more time and talent will find this a challenge and run with it! 

The only "Licensing" condition, post pictures and a video here and let me copy them to my personal project page.

Here is the idea posted on my site.

------------- Here it is here ! ( same thing but I might update stuff on the site later ) ---------

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.

Options:

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.


Methods:

Arduino and compass  or gyro/attitude shield?

Anyone ?

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