Student Builds Fully Functional Portal Turret

(YouTube Link) YouTube user kss5095 decided to...  ...cs at Penn State, so he built a fully functioning turret like you'd find in the video game series Portal . The turret is so sweet that it even has a soothing voice rec...

http://www.neatorama.com/2012/05/13/student-builds-real-tracking-and-shooting-portal-turret/