project of science I
stepper motors will generate current and I hear they are pretty efficient at it. I have lit up small neon lights with one by spinning the stepper with my fingers.
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The DC motor is a ready made generator that will generate electricity. All that you have to do is turn the Axle of the generator using a mechanical outside source of energy .
As well as the projects featured to the right (as mentioned by other members), there is a search box at the top-right of every page.
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you can use a dc motor from a rc toy, chek the volt of that dc motor and connect to a bulb to see when work.
How much research have you done?
If this is a model then a suitable prop and any DC motor will work. Either sohow the voltage on a meter or light an LED.