Turn a blank wall opposite any window into a live action wallpaper by effectively turning the entire room into a giant camera obscura. The view from your window will be projected (upside down) onto the opposite wall with the use of only a bit of cardboard, tape, and a lens available from your local optician. The effect is pretty cool - but wouldn't it be possible to flip the image right side up again by using a second lens? [via]
Source: http://feedproxy.google.com/~r/Diyhappy/~3/CHn-9F6orgc/live-wallpaper
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