PWM LED Fade Effect on Raspberry Pi | Wokwi Simulation (MicroPython)
PWM LED Fade Effect on Raspberry Pi | Wokwi Simulation (MicroPython)
This video demonstrates a smooth LED fade-in and fade-out effect using PWM on a Raspberry Pi Pico, simulated in Wokwi.
The LED brightness gradually increases and decreases using duty-cycle control in MicroPython.
Perfect for engineering assignments, beginners, and anyone exploring PWM concepts.
What this simulation includes:
• Raspberry Pi Pico in Wokwi
• LED + 220Ω protective resistor
• PWM at 1 kHz
• Smooth brightness fade using MicroPython
• Step-by-step code execution
Source Code Used:
from machine import Pin, PWM
from time import sleep
led = PWM(Pin(15))
led.freq(1000)
step = 1024
delay = 0.02
while True:
for duty in range(0, 65535, step):
led.duty_u16(duty)
sleep(delay)
for duty in range(65535, -1, -step):
led.duty_u16(duty)
sleep(delay)
If you're learning PWM, MicroPython, Embedded Systems, or Raspberry Pi basics, this is a great starting point.
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