Arduino for Beginners - 2022 Complete Course - How Digital Pins Work with Analog Values (PWM)

The video tutorial explains the concept of Pulse Width Modulation (PWM) on an Arduino Uno. It covers the identification of PWM-capable pins, the definition of PWM and duty cycle, and provides examples of different duty cycles. The tutorial also explains how to calculate the duty cycle using integer values and demonstrates setting PWM using the analog write function on Arduino.

Which of the following pins on Arduino Uno can be used for PWM output?

• Pins 2, 4, 6, 8, 10, 12

• Pins 7, 8, 9, 10, 11, 12

• Pins 3, 5, 6, 9, 10, 11

• Pins 1, 2, 3, 4, 5, 6

What does a duty cycle of 0% mean in PWM?

• The signal is high 25% of the time

• The signal is always low

• The signal is high 50% of the time

• The signal is always high

If a PWM signal has a duty cycle of 100%, what is the state of the signal?

• The signal is high 25% of the time

• The signal is always high

• The signal is high 50% of the time

• The signal is always low

How is a 25% duty cycle represented in integer form for PWM?

• 128

• 192

• 64

• 255

Which function is used to set an analog value for PWM on Arduino?

• digitalRead

• digitalWrite

• analogRead

• analogWrite