| Joel Clemens writes on his blog. "Using the playstation 3 sixaxis controller, along with a free program called GlovePIE, I am building a cheap, accessible VR system. The helmet shown is a retrofitted HMD (head mounted display), HMDs are much cheaper than VR helmets because they don't have head tracking. (which can now be substituted with a PS3 controller for a mere 40$ instead of hundreds. [r |