PWM and analogWrite: Arduino Course 4.7

This video tutorial introduces the concept of pulse width modulation (PWM) and its application in controlling voltage output on an Arduino. The instructor uses a story about a pinwheel and a squirt gun to illustrate how PWM works by varying the duty cycle to control the speed of a DC motor or the brightness of an LED. The tutorial explains how to implement PWM using the analogWrite function on specific Arduino pins, detailing the relationship between duty cycle and apparent voltage. The video concludes with a brief overview of the analogWrite function's parameters and its ease of use.

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