Hard Drive Speakers
I was watching YouTube videos this morning and came across "Hard Drive Speakers". Having some dead hard drives at home, I made my own hard drive speaker. Wasn't very loud, but at least it worked! Haha. Concept behind speakers is electromagnetism. Take a look! 运动员进行曲 Spent the whole afternoon doing it that I forgot to have lunch... Haha Maybe you can't hear anything at all!
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