Arduino for Beginners - 2022 Complete Course - Activity 04 - Set the LED Brightness with the Potentiometer

The video tutorial guides viewers through a project where they control LED brightness using a potentiometer. It explains how to set up the components, use the analogRead and analogWrite functions, and scale values appropriately. The tutorial emphasizes the importance of understanding the different value ranges for these functions and encourages viewers to practice the concepts learned.

What happens to the LED when the potentiometer is turned to zero?

• The LED changes color.

• The LED becomes brighter.

• The LED fades out.

• The LED blinks rapidly.

Which pin is the LED connected to for PWM functionality?

• Pin 10

• Pin 12

• Pin 9

• Pin 11

What is the range of values returned by the analog read function?

• 0 to 2048

• 0 to 512

• 0 to 1023

• 0 to 255

How should the potentiometer value be adjusted before sending it to the LED?

• Add 100

• Multiply by 4

• Divide by 4

• Subtract 50

Why is it necessary to scale down the potentiometer value?

• To ensure the potentiometer does not break

• To prevent the LED from overheating

• To fit the range of the analog write function

• To match the LED's voltage requirements