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توربین بادی

Creating a wind turbine from printer stepper motors

• Medium
• 1 day(s)

Electrically-assisted bicycle

Modification of a bicycle to transform it into an electrically-assisted bicycle.

• Hard
• 2 day(s)

Bio-sand filter for drinking water

Filter for drinking water using sand and a bacterial layer.

• Medium
• 3 hour(s)

Micro gasifier stove

Build an economical and transportable wood cooking system.

• Very easy
• 1 hour(s)

Energy use in households

How to have energy-efficient homes

• Medium
• 0 month(s)

Domestic biodigestor

Produces natural gas and fertilizer from our organic waste.

• Medium
• 2 day(s)

Solar air heater

Solar air heater, for any type of house, by Guy Isabel.

• Medium
• 2 day(s)

Manual pump (vertical)

The objective is to make a manual pump to draw water from a tank for exemple.

• Easy
• 3 hour(s)

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