Arduino Timer Circuit Quiz

What was the main focus of the previous lesson?

• Programming a game

• Building a robot

• Using a push button and a buzzer

• Creating a complex timer

What is the function of the first push button in the circuit?

• Add one minute to the timer

• Set the timer to zero

• Add one second to the timer

• Start the timer

Which component is used to indicate the remaining time by glowing with varying intensity?

• Buzzer

• LED

• Resistor

• Push button

What is the purpose of the PWM pins in the circuit?

• To power the Arduino board

• To control the brightness of the LED

• To increase the timer speed

• To connect the push buttons

What is the first step in coding the timer circuit?

• Setting up the breadboard

• Uploading the code

• Creating a timer variable

• Connecting the buzzer

What is the role of the 'forever' block in the code?

• To control the buzzer

• To ensure the timer is always available

• To stop the timer after a set period

• To reset the timer

How does the LED indicate the remaining time during the first half of the timer?

• By blinking rapidly

• By glowing at maximum brightness

• By changing color

• By turning off

What happens when the timer reaches zero?

• The LED turns off and the buzzer sounds

• The circuit powers down

• The LED blinks rapidly

• The timer resets automatically

What is the main purpose of the fourth push button?

• To add one minute to the timer

• To start the timer

• To add one second to the timer

• To set the timer to zero

What is suggested to improve the timer's LED brightness control?

• Add more push buttons

• Gradually decrease the brightness

• Use a different color LED

• Increase the LED's power