[Solved] What is wrong with this code snippet for servo control? import RPi.GPIO as GPIO GPIO.setmode(GPIO.BCM) GPIO.setup(23, GPIO.OUT) pwm = GPIO.... What is wrong with this code snippet for servo control? | Raspberry Pi

Raspberry Pi - PWM Output

What is wrong with this code snippet for servo control? import RPi.GPIO as GPIO GPIO.setmode(GPIO.BCM) GPIO.setup(23, GPIO.OUT) pwm = GPIO.PWM(23, 50) pwm.start(5) pwm.ChangeDutyCycle(20) pwm.stop() GPIO.cleanup()

AGPIO.setup missing output mode

BDuty cycle 20% is out of typical servo range

CPWM frequency should be 100 Hz

Dpwm.stop() should be called before ChangeDutyCycle

Step-by-Step Solution

Solution:

Step 1: Check duty cycle range for servo
Typical servo duty cycle ranges from about 2.5% to 12.5%, 20% is too high.
Step 2: Verify other code correctness
GPIO.setup has output mode, frequency 50 Hz is standard, stop called after changes.
Final Answer:
Duty cycle 20% is out of typical servo range -> Option B
Quick Check:
Duty cycle must be within servo range [OK]

Quick Trick: Keep duty cycle between 2.5% and 12.5% for servo [OK]

Common Mistakes:

Using too high duty cycle
Missing GPIO output mode
Wrong PWM frequency

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More Raspberry Pi Quizzes

What is wrong with this code snippet for servo control?

Step 1: Check duty cycle range for servo

Step 2: Verify other code correctness

Final Answer:

Quick Check:

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