Instructables: exploring - photos - workshop - solar - popular http://www.instructables.com Tue, 30 Sep 2014 13:28:39 PDT BLOX v1.01 Solar Death Ray (TV Fresnel Lens) http://www.instructables.com/id/Solar-Death-Ray-TV-Fresnel-Lens/ http://cdn.instructables.com/FZD/6L5S/HM8DFHBD/FZD6L5SHM8DFHBD.SQUARE2.jpg http://cdn.instructables.com/FZD/6L5S/HM8DFHBD/FZD6L5SHM8DFHBD.SQUARE.jpg http://cdn.instructables.com/FZD/6L5S/HM8DFHBD/FZD6L5SHM8DFHBD.SMALL.jpg bennelson For all of you would-be eco-friendly mad-scientists, I present to you a way to dominate the world! But only on sunny days - THE SOLAR DEATH RAY! This is simply a free projection lens from the front of an old television, mounted in a wood frame. It's any easy project anyone can build with only simpl...
By: bennelson

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Tue, 1 Oct 2013 12:24:02 PDT
DIY Solar panels - air heaters made of pop cans http://www.instructables.com/id/Solar-panel-air-heater-made-of-pop-cans/ http://cdn.instructables.com/FKN/6CI6/GQ5QC3S1/FKN6CI6GQ5QC3S1.SQUARE2.jpg http://cdn.instructables.com/FKN/6CI6/GQ5QC3S1/FKN6CI6GQ5QC3S1.SQUARE.jpg http://cdn.instructables.com/FKN/6CI6/GQ5QC3S1/FKN6CI6GQ5QC3S1.SMALL.jpg Mladen_solar It is really simple and cheap to build DIY solar panels for supplemental home heating, and it heats the air directly. The most interesting is the fact that collector is almost entirely constructed out of empty aluminum cans! Housing for solar collector is made of wood (plywood 15mm), while its fro...
By: Mladen_solar

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Wed, 20 Jul 2011 06:17:46 PDT