[Solved] What will be printed by this Python code when the PIR sensor detects motion?import RPi.GPIO as GPIO import time GPIO.setmode(GPIO.BCM) GPIO.setup(4, GPIO.IN) if GPIO.input(4): print("Motion detected!... | Raspberry Pi

Raspberry Pi - gpiozero Library

What will be printed by this Python code when the PIR sensor detects motion?

import RPi.GPIO as GPIO
import time

GPIO.setmode(GPIO.BCM)
GPIO.setup(4, GPIO.IN)

if GPIO.input(4):
    print("Motion detected!")
else:
    print("No motion")

AMotion detected!

BNo motion

CGPIO.input error

DSyntax error

Step-by-Step Solution

Solution:

Step 1: Understand GPIO.input behavior
GPIO.input(4) returns True if motion is detected by PIR sensor on pin 4.
Step 2: Check the if condition
If True, prints "Motion detected!"; else prints "No motion".
Final Answer:
Motion detected! -> Option A
Quick Check:
GPIO.input True means motion detected [OK]

Quick Trick: GPIO.input returns True when PIR detects motion [OK]

Common Mistakes:

Assuming GPIO.input returns string
Confusing pin number or mode
Ignoring indentation causing syntax errors

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What will be printed by this Python code when the PIR sensor detects motion?

Step 1: Understand GPIO.input behavior

Step 2: Check the if condition

Final Answer:

Quick Check:

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