Arduino Controlled Pet Door Quiz

What is the primary purpose of the magnetically activated Arduino controlled pet door?

• To allow all animals to enter and exit freely

• To prevent the dog from eating the cat's food

• To keep the door open at all times

• To stop the dog from eating the cat's poop

What type of switches are used in the circuit to detect the presence of a magnet?

• Push-button switches

• Reed switches

• Toggle switches

• Rotary switches

Which component is used to control the movement of the doors in the pet door project?

• Solenoids

• Servo motors

• DC motors

• Stepper motors

What is the role of the external pull-down resistors in the circuit?

• To increase the current

• To pull the voltage high

• To pull the voltage low

• To power the servos

What library is included in the Arduino code to facilitate servo control?

• Motor Library

• Servo Library

• Sensor Library

• Wire Library

What is the purpose of the delay time variable in the Arduino code?

• To keep the doors open longer

• To adjust the LED brightness

• To prevent rapid door movement

• To synchronize the servos

In the setup function, what command is used to set the sensor pins as inputs?

• analogRead

• digitalWrite

• pinMode

• attach

What is the purpose of the Serial print commands in the loop function?

• To power the circuit

• To adjust the LED brightness

• To debug sensor readings

• To control the servos

How does the if-else statement in the loop function determine when to close the doors?

• By checking if all sensors are low

• By checking if any sensor is high

• By checking the LED status

• By checking the servo position

What happens when all four sensor values are low in the loop function?

• The circuit powers down

• The servos return to their initial position

• The LED turns on

• The doors remain closed