This appears to me a homemade robot that slingshots a tennis ball when Jerry the dog places it in the barrel. Anyone know more about this device?

Phillip Torrone

Editor at large – Make magazine. Creative director – Adafruit Industries, contributing editor – Popular Science. Previously: Founded – Hack-a-Day, how-to editor – Engadget, Director of product development – Fallon Worldwide, Technology Director – Braincraft.


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