I've been working with a startup company in the wearable space in the headphones department the past few months. We recently decided to opensource the 3D printable files of some of our older prototypes for the community to use for Augmented, Virtual reality, head tracking, and audio technology applications.
The problem that we're looking to address and resolve is in the Augmented Reality Space, there doesn't seem to be an open source, head mount wearable platform. When we mean an opensource headmount wearable, we're not really talking about electronics. We're talking about ergonomics. Electronics is relatively easy to address, it's a circuit board, batteries, and an interface. The hard part is creating a platform that can conform to most user's heads, and that's an area we've been able to address with our platform.
These files were created while prototyping our bone conduction headphones, which we're manufacturing.
We have several 3D printable files ready to go for open source headmount wearable applications. The .stl files are located here.