Step 1: Gather Materials
-Five alligator clips
-Four pennies from before 1982 so they're copper plated.
-Four galvanized (iron coated) screws or nails.
(Screws are featured in this picture that were used, but were found not to be galvanized and ended up using galvanized nails to complete the project)
-A blue LED that requires 3V of electricity
-Clock is optional to show further signs of electricity generated
Step 2: Placing Screws/Nails in Pennies
Place one nail, me one screw parallel (about an inch part) in each lemon.
WARNING THIS WILL BE MESSY.
Step 3: Begin Connections
Step 4: Connect Alligator Clips From First and Last Lemon to LED.
Then take the empty alligator clip from the first lemon (should be connected to the copper penny) and then clip it on the right side of the LED.
The LED should glow at this point, producing around 5V of electricity with four lemons.
If LED does not flow, check connections and make sure opposites are paired.
Step 5: Optional, Connect to Clock.
If the clock is not powered at this point, you should recheck connections.