Fold a Paper Robot

摘要

Origami, the ancient art of paper foLding, also shows up in modern science and engineering. By turning a two-dimensional sheet into a 3-D product, as origami artists do, engineers can make more-versatile versions of devices like space mirrors and heart stents. The same techniques can also be used to create inexpensive robots. To get started, simply print out a template, cut, and fold. Once you add some basic electronics, an Arduino brain will command the robot to roll over the floor, sticking to dark surfaces, based on the amount of reflected light it detects. If the robot's body tears, it's no big deal. Cardstock costs only about 10 to 30 cents per piece-just print another.