Automatic NERF Sentry Gun

http://kotaku.com/automatic-nerf-sentry-gun-is-just-about-the-coolest-thi-711955960 … A proper sentry gun, like one you’d see in a video game or movie, which can automatically track you then start shooting until you die (of amazement). It was built by Instructables user BrittLiv, and comprises a NERF Vulcan gun, a stand, a motor and a laptop. Using recognition software, the laptop’s camera can track someone […]