Arduino PWM DC Motor Fan Speed Control

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This is a demonstration of controlling a DC CPU Fan Motor speed using PWM (Pulse Width Modulation). With the potentiometer I am controlling the Duty Cycle of the Pulse Width Modulated signal and that signal goes into the base of the transistor, which actually controls the amount of current that flows in the motor. • Visit HowToMechatronics.com for more Tutorials, Tips, Projects and How It Works videos: • ► https://howtomechatronics.com/ • Like my page on Facebook: • ►   / howtomechatronics   • Add me on Google+: • ► https://plus.google.com/+Howtomechatr...

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