Pretty Portable Projector!Overview: We made a simple portable smartphone projector with relatively few materials. Device uses no electricity! Gather Materials -Shoebox painted black on the inside (or lined with black paper) -cardboard -convex lens -duct tape -scissors -smartphone -rubber band ...By: isaacrlee
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from Instructables: exploring - technology - robots http://ift.tt/1z1uC7X
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