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Lots of good charts and info

One Sheet Solar Cooker – Appropedia: The sustainability wiki.

One Sheet Solar Cooker

Cocina_Solar_Simple in Spanish / en español.

Cocinasolarsimple.png

http://imagina-canarias.blogspot.com/2008/06/cocina-solar-simple.html 9 june 2008

This is the simplest solar cooker I’ve been able to design:

  1. Use a cardboard sheet 60 cm x 80 cm or larger.
  2. Draw lines to divide in 2×3 parts, and cut “A” lines only.
  3. The dotted lines are all for concave folding, so you can make a careful “half-cut” and then it will be easier to fold.
  4. Make two holes, so that the string will go through the holes once the red parts are below the yellow part. The string is knotted like your shoes’. Not a permanent knot because you want to be able to take the kitchen to other places.
  5. Glue foil paper to the part of the cardboard closer to you. Maybe the inner side of some fried chips bags. If there’s no glue you may staple it.
  6. The bottle with the bottom cut off (and discarded, unless you find a use for it) helps in getting more greenhouse effect. You can place it on a circle made of sand so that it’s more air-tight, so almost no heat should come out there.
  7. Inside the “greenhouse” you could place a glass jar, with its lid. Both the jar and the lid can be painted black with some kind of paint that doesn’t produce toxic vapour when heated. Coal with rice water or something.

Enjoy!

Careful, it’s hot! I don’t think temperature goes above 100ºC. Use folded cloth or gloves to grab the hot jar.

Public domain, so copy, modify and use at will. Experiment and tell us.

This is really interesting, using PSP to play games from other consoles.

PSP homebrew using the Half-Byte Loader

posted Jun 21st 2010 1:30pm by Mike Szczys
filed under: playstation hacks

[Rich] tipped us off about the Half-Byte Loader which lets you run homebrew on late-model Sony PlayStation Portables. Above you can see a PSP Go running Doom (a screenshot from the video after the break), which is a prerequisite for any cracked device. HBL uses an exploit in the game demo of Patapon 2, which is free for download. A crafted game save loaded onto a Memory Stick gets you to the loader when selected from the continue menu of the game. Right now this method works on all know firmware version 5.0 and higher. Who knows when Sony will take action to kill an exploit like this one.