Motion Detection

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What does PIR stand for in the context of motion detectors?

• Passive Infrared
• Proximity Infrared
• Photoelectric Infrared
• Programmable Infrared

What is the primary sensing principle of a PIR sensor?

• Ultrasonic waves
• Heat radiation
• Radio waves
• Light intensity

In a motion detection system using a PIR sensor, what is the typical range for detecting human motion?

• A few millimeters
• A few centimeters
• A few meters
• A few kilometers

Which GPIO pin of the Raspberry Pi is commonly used to connect a PIR sensor's output for motion detection?

• GPIO17
• GPIO3
• GPIO0
• Any GPIO pin can be used

In Python, which library is commonly used to interface with GPIO pins on a Raspberry Pi for motion detection using a PIR sensor?

• RaspGPIO
• PiControl
• RPi.GPIO
• GPIO4Pi

What is the typical state of the output pin of a PIR sensor when no motion is detected?

• High (1)
• Low (0)
• It toggles between high and low
• It depends on the specific PIR sensor model