The difficulty of this assignment was making a machine that worked without using any sort of mechanical fasteners or connectors. Our goal was to create a machine that used to power of wind to draw. After a couple of different varieties of machines, i came up with a machine that used a propeller to spin a paper barrel. The propeller would spin a set of pulleys that were different sizes, which worked like bicycle cogs to increase the energy transferred. As the barrel spun, a set of pencils with sails attached to them moved around and drew on the surface of the barrel. I used rubber bands to connect the pulleys, so the machine needed a bit of a push to get it going because of the resistance, but worked on its own after that.
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