Reader Contribution: Dog with Ball automaton

We haven't posted any reader-made automata in a while and it's time to remedy that. Here is a first attempt by Automata / Automaton Blog reader Gary Brown.

From Gary's YouTube description

Inspired by *The Invention of Hugo Cabret*, I built this automaton from scratch, using information I found around the Internet. The dog moves his head and tail while a ball bounces next to him. Though simple, the mechanism uses a cam, a crank, a crank slider and linkages. It was the most difficult craft projects I've ever attempted, and the result hardly shows it. But it was a fascinating endeavor.

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