CHAPTER 9

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The Cat Toy

Most people are pretty familiar with the “cat chasing the little red dot” paradigm. It’s so popular it even had a short scene in one of the Shrek movies. Some cats will chase the laser spot until they drop. Some will only chase it for a little while. In any event, anyone who has a cat has probably played with a laser pointer with their feline friend at some point.

But wouldn’t it be nice if you could entertain your cat when you’re not there? A laser pointer, contrary to what you might think, does not have to be held and controlled by a human. A little programming and mechanical engineering magic, and you have yourself an ...

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