Announced in 2018, Project North Star is an evolving open-source reference design for an advanced AR headset. From firmware to the 3D-printable mechanical design, every detail has been made available to enable developers to construct their own AR headset builds – at a small fraction of the cost of headsets like HoloLens 2 and Magic Leap One. In 2019, I challenged myself to build my own unique Northstar headset.