So you're looking for cool solar stuff huh?

Water battery lights LED

Posted by Harmjan H. on Jun 1, 2012 in DIY, education, lights | 0 comments

In my previous post I made a battery of nails, copper wire and vinegar. This time I used plain tap water (not salted or anything) and 12 bottle caps instead of 9 and guess what, the LED burns as brightly as with the vinegar! If you want to...

DIY vinegar battery lights LED for ...

Posted by Harmjan H. on May 20, 2012 in DIY, lights | 0 comments

Always wanted to make your own battery? Homebrew 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 battery is based on two...

Solar jar DIY: repurpose an old sol...

Posted by Harmjan H. on Apr 21, 2012 in DIY, lights | 0 comments

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...

Solar light bulbs from plastic bott...

Posted by Harmjan H. on Sep 21, 2011 in DIY, events & society | 0 comments

A litre of light (Isang Litrong Liwanag) is a incredible project which aims to bring eco-friendly and cheap Solar Bottle Bulbs to disprivileged communities and millions of people who live in the dark. This is a really cool invention and...

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Solar powered fuel cell toy car

Posted by Harmjan H. on Apr 18, 2011 in toys | 0 comments

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 50 km/h… So that was many years ago and I haven’t had a toy car since. Now however...

DIY Stirling engine from a tuna can

Posted by Harmjan H. on Apr 6, 2011 in DIY, stirling | 5 comments

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 di...

Posted by Harmjan H. on Mar 23, 2011 in DIY, education, stirling | 2 comments

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 c...

Posted by Harmjan H. on Mar 21, 2011 in DIY, education, stirling | 0 comments

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...

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The world on Solar power!

Energy is all around us and is just waiting to be used. Whether it's light from the sun, burning candles or even a cup of hot tea, there's power out there! Why don't we turn this into useful power?

And wouldn't that be great? To only use the sun as source of energy! Or waste heat from household appliances. Since the sun will be around for a while, I guess it's better to take advantage of it while it last ;-)

On this site you'll find many stuff, gadgets, toys and DIY things which work on solar power and other heat sources. Take a look around and tell me what you think!

Harmjan Heeling: Yeah, they need some time to charge. I assume you use rechar...
Emma: I have 2 sets of lights and they stopped working and I have ...
Harmjan Heeling: Absolutely, it's very important to use rechargable batteries...
lynne: do you have to use rechargable battery when you replace them...
Harmjan Heeling: Since this machine doesn't run I wouldn't recommend anyone b...
Vinnius: CAn you post more datails on the construction, especially on...

Water battery lights LED

Water battery lights LED

DIY vinegar battery lights LED for ...

Solar jar DIY: repurpose an old sol...

Solar light bulbs from plastic bott...

Solar powered fuel cell toy car

DIY Stirling engine from a tuna can

Stirling engine homemade hot air di...

DIY Stirling engine out of a soda c...

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