Arduino for Beginners - 2022 Complete Course - Activity 11 - Solution

The video tutorial explains how to toggle LEDs 2 and 3 with a button press and make LED 1 blink every second without using delay. It covers initializing LEDs, setting up variables, and using time functions to manage LED states. The tutorial also demonstrates debouncing a button press to ensure accurate toggling of LEDs. The code is structured into functions for clarity, and the tutorial concludes with testing the setup to ensure functionality.

What is the primary task described in the introduction section?

• To make LED three blink every one second

• To toggle LED two and three when a button is pressed

• To toggle LED one and two when a button is pressed

• To make LED one blink every two seconds

Which variable type is used to store the last time the LED blinked?

• unsigned long

• byte

• float

• int

What is the purpose of the 'blink delay' variable?

• To store the current state of the LED

• To count the number of LED blinks

• To determine the time interval between LED blinks

• To set the brightness of the LED

What is the debounce delay used for in button handling?

• To increase the button's sensitivity

• To make the button press more responsive

• To ensure the button state is read immediately

• To prevent false triggering by ignoring rapid button state changes

How is the button state initially set in the code?

• It is set to high

• It is set to blink

• It is set to low

• It is set to toggle

What happens when the button state changes to high?

• The LED toggles between two states

• The LED turns off

• The LED blinks faster

• The LED remains unchanged

What is the role of the 'toggle LED state' variable?

• To keep track of the current LED being toggled

• To store the brightness level of the LED

• To determine the speed of LED blinking

• To count the number of button presses

What is the main advantage of using functions for LED control?

• It makes the code run faster

• It reduces the number of variables needed

• It organizes the code and makes it reusable

• It allows for more LED colors

How can the code structure be reused for multiple actions?

• By copying and pasting the same code

• By using different variable names

• By changing the LED pin numbers

• By repeating the code block with additional variables

What is the key takeaway from the summary section?

• LEDs should always blink at the same rate

• Understanding time functionalities and debouncing is crucial for complex applications

• Code should be written without functions for simplicity

• Buttons should be pressed rapidly for best results