How to Use a PIR Sensor with Arduino (Lesson #26)

This video tutorial explains how to use passive infrared (PIR) sensors with Arduino for motion detection. It covers the working principle of PIR sensors, their components, and how to connect them to an Arduino. The tutorial also discusses adjusting sensor settings like sensitivity and delay, and provides a simple circuit and code to control an LED based on motion detection. The video emphasizes the importance of checking the sensor's datasheet for correct connections and settings.

What do passive infrared sensors primarily detect?

• Visible light

• Sound waves

• Ultraviolet light

• Infrared light

Which pin on a passive infrared sensor is typically used for power?

• GND

• VCC

• OUT

• SIG

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

• To know the sensor's weight

• To determine the sensor's price

• To find the sensor's color

• To ensure correct pin connections

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

• By using a larger lens

• By covering it with a cardboard tube

• By increasing the power supply

• By changing the sensor's color

What is the purpose of a JST connector in some sensors?

• To increase the sensor's range

• To adjust the sensor's delay

• To provide a secure connection

• To change the sensor's sensitivity

What is a key feature of the circuit setup for a passive infrared sensor with Arduino?

• It is simple and self-contained

• It requires multiple external components

• It is complex and requires advanced skills

• It needs a special power supply

What is the role of the digital read command in the Arduino code for a passive infrared sensor?

• To write data to the sensor

• To read the sensor's output

• To adjust the sensor's sensitivity

• To change the sensor's field of view