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Makezine_COTM_October-PowerSupplyHaving witnessed the effects of Superstorm Sandy on the New York power grid, Hackett built this easy bike generator to stave off the next power outage. It consists of a permanent-magnet DC motor with its spindle positioned against the wheel of a stationary bike–his is propped up on a metal framework he built himself. The motor is hooked up to a deep-cycle marine battery. He built a charging circuit based off Mike Davis’ 555 Charge Controller and put it in a 3D-printed enclosure with an Adafruit voltage meter. Finally, a voltage inverter converts the DC output by the generator into 110VAC that your household appliances use.

John Baichtal

My interests include writing, electronics, RPGs, scifi, hackers & hackerspaces, 3D printing, building sets & toys. @johnbaichtal nerdage.net


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