How can you modify PWM code to reduce flickering when changing LED brightness rapidly on Raspberry Pi?

hard📝 Application Q9 of 15

Raspberry Pi - PWM Output

AUse GPIO pin set as input

BDecrease PWM frequency to a lower value

CIncrease PWM frequency to a higher value

DStop PWM before changing duty cycle

Step-by-Step Solution

Solution:

Step 1: Understand flickering cause
Low PWM frequency causes visible flicker when brightness changes rapidly.
Step 2: Fix flickering by frequency change
Increasing PWM frequency reduces flicker by making switching faster than eye can detect.
Final Answer:
Increase PWM frequency to a higher value -> Option C
Quick Check:
Higher PWM frequency = less flicker [OK]

Quick Trick: Higher PWM frequency reduces flicker [OK]

Common Mistakes:

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