Arduino Passive Infrared Sensor Quiz

What is the primary function of a passive infrared sensor in an Arduino project?

• To emit infrared light

• To measure ambient temperature

• To detect infrared light from the environment

• To generate sound

What type of signal does the passive infrared sensor output when it detects motion?

• Visual signal

• Audio signal

• Digital signal

• Analog signal

Why is it important to check the data sheet of a passive infrared sensor?

• To find out the price of the sensor

• To know the weight of the sensor

• To ensure correct pin connections

• To determine the color of the sensor

What might you need to adjust on the sensor to change its sensitivity?

• The power supply

• The potentiometer

• The LED brightness

• The sensor's position

How can you adjust the field of view of a passive infrared sensor?

• By changing the sensor's color

• By increasing the power supply

• By using a cardboard tube

• By rotating the sensor

What is the role of the JST cable in the sensor setup?

• To power the sensor

• To connect the sensor to the breadboard

• To adjust the sensor's sensitivity

• To change the sensor's field of view

What is the purpose of connecting an LED to the Arduino in this setup?

• To provide additional light

• To indicate when the sensor detects motion

• To cool down the sensor

• To charge the Arduino

Why might you prefer to use a breadboard in this Arduino setup?

• To organize connections neatly

• To make the setup more compact

• To increase the sensor's range

• To avoid using jumper wires

What is a key difference in the code when using a passive infrared sensor compared to a button?

• The sensor requires an external pull-up resistor

• The sensor uses analog input instead of digital

• The sensor needs a different power source

• The sensor does not require a pull-up resistor

What command is used in the code to check if motion is detected?

• digitalRead

• digitalWrite

• analogWrite

• analogRead