Raspberry Pi For Beginners - 2022 Complete Course - Add a New URL and Connect Flask with GPIOs

The video tutorial explains how to set up a web application using Flask to detect the state of a push button connected to a Raspberry Pi via GPIO. It covers URL routing, handling 404 errors, initializing GPIO, and implementing logic to determine if the button is pressed. The application can be accessed from any device on the same network, allowing users to check the button state remotely.

What is the purpose of creating a new URL in the web application?

• To reduce the size of the web application

• To handle 404 errors by creating a route for a non-existent URL

• To increase the speed of the web application

• To improve the security of the web application

What is the recommended way to name functions in Flask?

• Use names that are meaningful

• Use random names

• Use names with spaces

• Use names that are the same as the URL

What is the purpose of setting up GPIO pins in the application?

• To enhance the user interface

• To read the state of a button

• To manage database connections

• To control the web server

How does the application determine if the button is pressed?

• By monitoring the CPU usage

• By checking the network status

• By reading the GPIO input

• By analyzing the server logs

Why is the else statement not mandatory in the button state logic?

• Because it makes the code run faster

• Because the return statement exits the function

• Because else statements are deprecated

• Because it is not supported in Flask

What is required for accessing the application from different devices?

• Devices must be connected via Bluetooth

• Devices must have the same operating system

• Devices must be on the same network

• Devices must have the same IP address

What happens when the button is pressed and the page is refreshed?

• The page reloads with no changes

• The page displays 'Button is pressed'

• The page displays 'Button is not pressed'

• The page displays an error message