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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)

Solar air heater

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

• Medium
• 2 day(s)

Simple wooden bike trolley - hand tools only - back wheel attachment

Method to create a simple bike trolley, using up-cycled materials. Easily fixated to every bike (adult size). Holes on the board help attach any kind of cargo. It’s made out of wood and simple hand tools, no welding required! Dimensions are detailed and can easily be adapted to the material available. (price depends of what materials you use, of course!).

• Easy
• 2 day(s)

Cultivation of oyster mushrooms

Domestic cultivation of edible mushrooms.

• Medium
• 1 month(s)

Black Soldier Fly breeding

This tutorial aims to facilitate the understanding of the life cycle of the black soldier fly and to learn how to grow it for domestic use. This technology was documented during the stopover of the Nomade des Mers expedition in Malaysia. The company EntoFood, which we visited, has been doing research on these flies for nearly 8 years and is preparing to launch its large-scale production unit. It will allow the treatment of 300 tonnes of organic waste per day!

• Easy
• 1 day(s)

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