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This is an easy way to get volts from pennies card board and vinegar
-Pennies (preferably before 1982) -cardboard -Vinegar -Sand paper -Duct tape - Wier
Put all your pennies on a sticky surface and sand them down Sanding the pennies down will release the zinc under the copper coating
Cut out cardboard disks and soak them in vingar
Next stack the pennies and cardboard disks in the order of : penny,cardboard, penny, cardboard
Now You can put wire on both ends and duct tape it all up
Now it should look like this and if you did it right it should give off close to 3-5 volts If you want more projects like this please ...
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