Raspberry Pi For Beginners - 2022 Complete Course - Activity 04 - Solution

The video tutorial guides viewers through creating a Python script to control an LED using GPIO on a Raspberry Pi. It covers importing necessary modules, setting up GPIO pins, handling user input to determine LED state, validating input, and implementing error handling. The tutorial concludes with testing the script and ensuring proper cleanup of GPIO resources.

What is the purpose of importing the RPI.GPIO module in the script?

• To perform mathematical calculations

• To manage file input and output

• To create graphical user interfaces

• To control the Raspberry Pi's GPIO pins

How is the user input converted for processing in the script?

• It is converted to an integer

• It is converted to a boolean

• It is converted to a float

• It is converted to a string

What happens if the user enters a non-integer value?

• The program will exit with an error

• The program will ignore the input

• The program will prompt the user again

• The program will crash

What does the script do when the state is equal to 0?

• It powers on the LED

• It powers off the LED

• It does nothing

• It blinks the LED

Why is time.sleep used in the script?

• To ensure the LED state is visible

• To delay the start of the program

• To synchronize with other devices

• To save power

What is the purpose of GPIO.cleanup in the script?

• To power off the LED

• To power on the LED

• To reset the GPIO pins to a safe state

• To initialize the GPIO pins

What should the program do if an invalid state is entered?

• Ignore the input

• Print an error message and exit

• Retry the input

• Continue with the default state