How to project a digital image?

Question

Do it yourself

You need to project a digital image from "whatever" onto a flat surface (meter by meter or more), not even the image itself, but a clear silhouette, say, for tracing and subsequent painting over graffiti, etc. I don’t want to buy a projector, I can smell it easier) I have ideas ?

Answer 1

https://www.youtube.com/watch?v=mUUoRWjO5Ys

Answer 2

Well, in principle, the tablet shines quite strongly. If you put it in a box with a projecting lens at night, then I think it will be enough to outline the silhouette.