In today's video I'll show you a great idea on how to make an electric toothbrush at home. It didn't take a long time to me to construct a handmade electric toothbrush and share the technology with you. After you pressed the button of the toothbrush it makes the lashes vibrate, which is the effect we were expecting. Yeah, it’s not the best idea to make an electric toothbrush out of a frother, but I guess in the hours of desperation where you are in real need of an electric toothbrush to brush your teeth, and at the same time you don’t give about the health of your gums, you can use this method!. On the other hand, controlling a DC motor speed is something that can come in quite handy and is pretty much used everywhere. Like I mentioned in the video, to control the speed of such a motor they use PWM, or pulse width modulation. Imagine instead of turning the motor continuously on, you turn it on an off quickly. The frequency of turning the motor on/off would be so fast that the motor would not completely turn on or off, but it would rotate at a speed that is proportional to the on-time in every period.

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