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Use a small flashlight bulb.... No more than 3 volts, maybe 1.5 would be better... you'll need a couple of limes, a couple of galvanized nails, a couple pieces of copper wire.

Another answer

Put a nail and a piece of copper in each lime, as far apart as you can. Connect one of the nails, to the copper in the other lime. Connect the copper in the first lime to the positive side of a small LED, and the galvanized nail in the 2nd lime to the negative side of it. Vwala!

You should be able to get about 1 1/2 VDC out of the contraption....

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13y ago

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