In this project, we’ll build a small, vertical-axis wind turbine, or VAWT for short. These are not as efficient as their horizontal-axis cousins, but they are better suited to urban environments where wind can come from all different directions. Normally, when you give electricity to a motor, it spins. The same is true in reverse: […]
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I’m lazy. My impatience often leads me to botch important steps when I make yogurt. So to get better control over the fermentation process, I made a crockpot thermostat attachment to precisely control the temperature. You can buy electric yogurt makers, but most of them only incubate; the heating/sterilization step still has to be done […]
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Use a solar-powered motor and a shade to follow the sun, maximizing its energy.
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