It sat on my windowsill, from 4th January to 4th July.
Today I removed it and scanned it.
In conclusion, I think I need to use a scanner with higher DPI, and perhaps put a camera somewhere more interesting, but at least in the picture you can see the sun's arc. It didn't seem to capture that much detail, so that's something also that I can improve on.

I know it's not the same but I am fascinated by the camera obscura.
x
Is it a one shot thing? Is the unfixed photographic paper wrecked by the light of the scanner? I wonder if a bigger can and a larger sheet of paper would give better detail.
Darn, I'm an idiot; your resolution is governed by the size of the pin hole....
Perhaps a Jeweler's Drill and a 0.1mm or 0.2 mm micro drill bit would be your friends. Given that a pin must have a diameter of at least 1mm.
Edited at 2012-07-05 08:29 am (UTC)
A larger sheet of paper/bigger can would make a bigger picture though, which would be cool also!