DIY vinegar battery lights LED for several days
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 …
Read MoreAuthor: John H.
Mason jar light: remake an old solar garden lantern into a Sun Jar!
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 …
Read More
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 …
Read More
Solar powered fuel cell toy car
Once upon a time I had a RC car with a 3.5cc nitro engine. Lots of smoke and noise. I loved the thing, until it crashed into a sidewalk with …
Read More
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 …
Read More
Stirling engine homemade hot air diy, attempt #2
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 …
Read More