What a great and crazy cool project! This Instructable is quite detailed and can step you through the process of building your own rig. This is something to start now so you are prepared for Halloween 2020! — Douglas
What do you do when you can't decide what you want to be for Halloween? Be everything. The projection mask is comprised of a white 3D printed mask, a raspberry pi, a tiny projector and a battery pack. It is capable of projecting anything and everything onto your face. I will demonstrate some of the cool effects in my video, but I encourage you to try and come up with some of your own.
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An interesting link found among my daily reading