He purchased a motorized screen (we’ve seen a few diy projection screens but can’t remember one that rolls up) and built a slot into the design just large enough for the screen to pass through.

[Joel] wanted a huge-screen TV on the cheap ... [Joel] started off looking at the LumenLab DIY projector project, but considered that to be a terrible amount of work with a fairly high initial ...

The compact JMGO O2S Ultra short-throw tri-laser projector is an impressive little unit that delivers a large 4K image inches ...