[Solved] Given this code snippet, what is the error? import RPi.GPIO as GPIO GPIO.setmode(GPIO.BCM) GPIO.setup(18, GPIO.OUT) pwm = GPIO.PWM(18, 50) pwm.start(7.5) # Missing cleanup | Raspberry Pi

Raspberry Pi - PWM Output

Given this code snippet, what is the error?

import RPi.GPIO as GPIO
GPIO.setmode(GPIO.BCM)
GPIO.setup(18, GPIO.OUT)
pwm = GPIO.PWM(18, 50)
pwm.start(7.5)
# Missing cleanup

AGPIO pins are not cleaned up after use

BPWM frequency is incorrect

CDuty cycle value is out of range

DGPIO mode is not set

Step-by-Step Solution

Solution:

Step 1: Review code for setup and cleanup
The code sets mode, pin, and starts PWM correctly but does not call GPIO.cleanup().
Step 2: Identify missing cleanup importance
Not cleaning up GPIO pins can cause warnings or errors on next runs.
Final Answer:
GPIO pins are not cleaned up after use -> Option A
Quick Check:
Missing GPIO.cleanup() = A [OK]

Quick Trick: Always call GPIO.cleanup() after PWM use [OK]

Common Mistakes:

Master "PWM Output" in Raspberry Pi

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Given this code snippet, what is the error?