Recent Articles
Parabolic solar cooker from a satellite dish

Parabolic solar cooker from a satel...

How to make a solar cooker You’re inside your house and you’re cooking using gas or electricity. Meanwhile outside the sun is shining. So why not use the sun to cook your meal? I mean in the sun’s surface, the temperature...
Salt water battery lights LED

Salt water battery lights LED

In my previous post I made a battery of nails, copper wire and vinegar. This time I used salted water and 12 bottle caps instead of 9 to make a salt water battery and guess what, the LED burns as brightly as with the vinegar! You can also...
DIY vinegar battery lights LED for several days

DIY vinegar battery lights LED for ...

Always wanted to make your own battery? Home brew electricity! Maybe you already heard about salt water batteries made from sea water, but this is something you can easily do at home in a few minutes. This homemade vinegar battery is based...
Mason jar light: remake an old solar garden lantern into a Sun Jar!

Mason jar light: remake an old sola...

So a while back you bought a solar lantern (maybe like the one I have, a SOLIG Solar Powered Globe from IKEA) which you hung on some branch. Nice! It did its job excellent but after a year or two the lantern looked like it had its best...
Bottle lights from plastic bottles

Bottle lights from plastic bottles

A Liter of Light (Isang Litrong Liwanag) is an incredible project which aims to bring eco-friendly and cheap bottle lights -also called solar bottle bulbs- to disprivileged communities and millions of people who live in the dark. This...
DIY Stirling engine from a tuna can

DIY Stirling engine from a tuna can

I am currently working on my third engine, after my 1st and 2nd attempts failed miserably… I thought my third engine would run. I thought wrong. It was airtight, it turned smoothly but it seemed that the piston didn’t had...
Stirling engine homemade hot air diy, attempt #2

Stirling engine homemade hot air di...

OK, two days after my first attempt of building a homemade stirling engine, I somehow cooled off and tried again. I fished the 250 ml. soda can I threw in earlier out of the trash bin, straightened it, build the darn hot air engine…...
DIY Stirling engine out of a soda can, can I make one?

DIY Stirling engine out of a soda c...

Homemade Stirling engine, attempt #1 Building a DIY stirling engine was high on my list for quite some time, because it seems a cool idea to have an tin can engine running with the sun as fuel. But before I would build a solar driven...