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Dennis Hong: My Seven Species of Robots
http://www.ted.com/talks/dennis_hong..._of_robot.html
I remember someone suggested a variable sprocket so that the diameter of the sprocket, therefore, the gear ratios can change. That same concept is shown in the second robot.
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Do not say what can or cannot be done, but, instead, say what must be done for the task at hand must be accomplished.
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