Speaker = Generator (version 2015)

The previous Speaker = Generator version could make 10 LED lights blink once. This one drives one hundred LED lights continuously! (continuously-to-the-eye that is. It would need some electronics in between to make it truly continuously) Here, the magnet is driven by a motor, but you could also make something similar that is driven by human power, or wind, or whatever. The speed of the rotation is sensitive though, because it has to be in sync with the resonant frequency of the speaker.

Видео Speaker = Generator (version 2015) канала Giesbert Nijhuis