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Desert fridge

Make a refrigerator that works without electricity!

• Very easy
• 2 hour(s)

Multifunctional Crankset

A bicycle crankset that can power multiple tools such as a blender, a drill press, a sewing machine or even an electric generator.

• Medium
• 2 day(s)

Bio-Coal

Making coal briquettes with carbonised agricultural waste.

• Medium
• 4 day(s)

Solar air heater

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

• Medium
• 2 day(s)

Solar lamp with reused lithium cells

This tutorial allows you to make a solar lamp equipped with a USB charger. It uses lithium cells that are reused from a old or damaged laptop. This system, with a day of sunlight, can fully charge a smartphone and have 4 hours of light.

• Easy
• 2 hour(s)

Solar Oven (box-type oven)

Box or a parable shaped, the solar oven makes it possible to cook your food using the sun rays.

• Easy
• 1 day(s)

Dry Toilets For Family

Dry toilets for domestic use.

• Easy
• 2 hour(s)

Solar water heater

Capturing solar energy for domestic hot water or high-efficiency heating

• Hard
• 1 day(s)

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