Glass coke bottles are cool, really cool, but what do you do with the bottle after the coke is gone? You don’t need any more candle holders, so make an automatic plant waterer. With this cheap and easy automatic plant watering system all you have to do is set it and forget it. Via Instructables.

This Project is primarily design for charging communication equipment & gadgets like Laptops,Hand phones, GPS, LED lights while doing mission work in remote area without Grid Electricity Supply. The capacity of the Power Supply is sized for above personal equipment with portability,availability of material,cost effectiveness & flexibility in mind. 5 Watts Solar panel pumping out 17 Volts <!–more–>
For far too many people, an untapped energy source is close and personal: body fat. Exercise is a good way to get rid of that fat (or just to stay healthy) and we might as well use that exercise for some good purpose, like lighting a room. This project takes human activity (winding a hand-cranked <!–more–>
Have you ever wondered what you would for light and entertainment do if you had no power, no candles, and no television, but you did have a plentiful supply of bacon?

Ed ecco le istruzioni per realizzare in casa un piccolo ma funzionale caricabatterie (AA) compatto e portatile, ideale per quando si è in viaggio od in campeggio. L’ideatore di questo DIY promette addirittura un costo di realizzazione di appena 5$ per un tempo di montaggio di 20 minuti! Ovviamente via Instructables!.

Ancora una volta da Instructables un progetto fai da te interessante dal punto di vista didattico. Un primo esperimento nel mondo della generazione eolica. In questo caso si tratta di una turbina ad asse verticale che genera corrente sufficiente ad accendere un led posto alla base della turbina: un rilevatore di vento!




