Freetrack Head Tracking IR Clip for HD555/595

This is a modified version of Jewcookie's freetrack IRclip. The attachment clip ("C".stl) is made to fit the band on a Sennheiser HD555, but may fit other headphones as well. To make it as light as possible I've used a single CR123A 1200ma lithium battery. The fully assembled IRclip weighs only 37g, compared to two AA NiHMs which alone weigh 57g. It's modeled around readily available RadioShack parts (links below). The switch is held in place by friction, and the battery holder is held in place