Re:How to use LEDs to detect light
by ajuc on Thursday August 30, 2018 @08:23AM
(#17876081)
Each pixel receives light from each point in the room, so almost all of them have the same value.
You need a pinhole to block vast majority of that light, so that each pixel on screen receives light from a different point on the other side of the pinhole.
You need a pinhole to block vast majority of that light, so that each pixel on screen receives light from a different point on the other side of the pinhole.