Build your own wind turbine in 11 steps

Build your own wind turbine in 11 steps:

In this DIY video-guide, we learn how to make a wind turbine using neodymium magnets and copper coils. These step-by-step videos are in German but can be easily understood.

Step 1: Before you build a large generator, it is better to build a smaller one as a test.

Step 2: Measure the open circuit voltage and the short circuit current of the small test generator. It gives an indication of tells what you can do to improve the generator.

Step 3: DIY Windmill generator: the stator

Step 4: DIY Windmill generator: wrap the copper coils

Step 5: DIY Windmill generator: install the coils

Step 6: DIY Windmill generator: bathe in polyester resin

Step 7: DIY Windmill generator: test on vertical wind

Step 8: Here is the first part of the theory for Delon voltage doubler. You can increase the output voltage from the wind turbine.

Step 9: Second part of the theory for Delon voltage doubler.

Step 10: Solder the voltage doubler

Step 11: Test the voltage doubler –

Thanks to Chris Will Know who developed these great DIY instructions and made them available to all.

Aquaponics: Material flow aquarium

Aquaponics: Material flow aquarium


An essential point of the Blue Economy is to interlace multiple material flows to create added value. In agriculture, it is possible to do so in the most natural way. It is hardly surprising that some of the most important „Blue“ projects are found in this area; these are called „Integrated Farming“.

Biodiversity and the use of different kingdoms of nature (plants, protists, bacteria, fungi and animals) are the main focus: a farm produces biogas, pigs, algea, fishes and different sorts of vegetables – all that on a pretty small area. 

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Here it is how it works: 

Pigs are producing manure, from which biogas is produced. Biogas delivers the energy needed to make a various number of processes. On the remaining waste mushrooms are bred. 

The pig’s urine is used to grow seaweeds, and these seaweeds are used as a way to clean water. The clean water is then used as a base to breed fish. The water from the fish is also used as manure for the fields and for the vegetable production. This organic „waste“ is also used to grow the mushroom. Ultimately we have a high quality humus, filled with worms. And the worms are perfectly fit for feeding the fishes.

In those kinds of systems, it is possible to add a lot of elements: mulberries can be used both to produce silk and as a hedge; fish ponds can also be used as rice paddies; worms and maggots can compost waste and serve as food for the animals, and the list goes on.

If agriculture is considered this way, it can be free of almost every pesticides and genetically modified seeds – it builds up a biological system with a high biodiversity and high-yield crops.

In the 1960s and the 70s a first wave of „aquaponic-systems“ developed, in such systems fishes and plants are grown together in a greenhouse. Fishes are providing the plants with nutrients, especially nitrogen, and the plants are cleaning the water for fishes. The water is laid in a closed loop and the production can take place all year round thanks to the warmth of the greenhouse.

However, most of those systems are producing tomatoes and salads in monoculture in combination with tilapia to get a maximal yield. Until now, aquaponics is primarily developed in the USA and Australia. 

Do It Yourself

But even if you are not a farmer, you can apply the „blue principles“ of integrated farming and aquaponics at home. A little aquarium built with common materials is pretty to watch and useful at the same time. Basil, chives and tomatoes, functioning as a biological filter, can be easily grown in the system.

TopFarmers created a construction manual which is available on open-source and that you can find here:


From this idea, BTTR Ventures, an american company, created an all in-one fish tank from which you can grow plants, the „AquaFarm“. It can be ordered online for 60$. The company used a kicksarter campaign to raise 250.000$ in order to produce the first kits. It may be then possible to sell seeds regularly to the customers, in the form of a monthly package for instance.

In any case, a aquaponic-aquarium is good to provide an understanding of how an ecosystem works, kids will especially understand it very quickly. It is nice way to use the principle of the Blue Economy in our every day life, at home – and at the same time, to always have fresh herbs and healthy greens at hand.

20 ingenious ways to produce your own energy

20 ingenious ways to produce your own energy

During the following weeks we will present you a large range of people who produce their own energy, based on do-it-yourself projects.

These can serve as an inspiration, and give you ideas on how you can experiment to generate energy.

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The series provides real life applications of the Blue economy principles such as:

  • Substitute something with Nothing – question any ressource regarding its necessity for production.
  • Gravity is main source of energy, solar energy is the second renewable fuel.
  • Nature only works with what is locally available. Sustainable business evolves with respect not only for local ressources, but also for culture and tradition.
  • Solutions are first and foremost based on physics. Deciding factors are Pressure and Temperature as found on site.

1. Solar Water Heater DIY

The first idea is a guide to build a solar water heater by yourself

This is a really good video that eplains how to build a device that allows you to heat water through the power of the sun.

It gives you the main.

Even though the project can definitely be optimized, it clearly shows the amazing possibilities of the sun.



“Most of our industries generate massive amounts of waste. For every tone of municipal solid waste, there are 71 tonnes produces from mining, manufacturing, and product distribution. We have nuclear waste, soil laced with heavy metals, chromium-contaminated groundwater, landfills bursting with cast-off plastic containers. The residues of our consumption are buried in highly centralised areas and are burned when the volume accumulates”.

The problem of waste disposal is becoming one of the main problems on the environmental: landfills, incinerator and indiscriminate abandonment of waste are real social and environmental emergency. A really serious problem that cannot remain indifferent.

Since this moment I have never heard about the concept “Blue Economy”. A week ago I started an intership in the “Blue Economy Solutions” in Berlin, then I read some articles about innovations and, as citied before, the Blue Economy’s book. I am very surprised, the ideologies behind the acting are simple: try to produce less waste and pollution as much as possible, trough the inspiration of Nature with own hands.

I have a Master’s Degree in Environmental Engineering, furthermore my background taught me how it is important that everybody collaborate to change the world, then I found this kind of approach very clever. Now I would like to share my idea in order to have advices from somebodies more specialized then me.

As mentioned in the title my idea is a station with a vertical axis windmill and two solar panel on top. There is not nothing new about the idea, but I believe the most important aspect is: we can do the station in mode “do it yourself”, with recycled materials or, in the worst case, with second-hand items. The structure could be made with pallets, the windmill with a used tanks and the energy solar system with “diy” solar panel. Could be interesting because everybody can make a station like this and have a “free” energy which can be used to charge electric cars, a lawn-mower or simply a computer when you want use it in garden. I enclose a simple image of my idea.

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In conclusion, this is a prototype and of course it needs a modification to work well. So I am very happy if somebody is interested in to develop the project. I am working in it, thus I will update you with new ideas and modification.