Step 5: Finish it off
Once you've capped it, carefully tape it (if you like) and insert your LED, with the positive end on top.
The LED should light up.
It's not very bright, but then again, it's running on only six cents!
The LED should light up.
It's not very bright, but then again, it's running on only six cents!
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1
The_Tom
says:
May 3, 2012. 9:15 PMReply
What was the voltage?
jerbob
says:
May 14, 2009. 10:31 AMReply
Yay, it works! One clarification: make sure that you put a solution-soaked cloth between the top sanded and the unsanded top penny. Wonder how much more voltage you'd get if you added six more pennies?
5
Bigev
in reply to May 16, 2009. 1:50 PMReply
probabally double. voltages in series add up.
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