Raspberry Pi 使用 Hardware PWM by PiGPIO 控制 LED 亮度

• running daemon at boot time for Hardware PWM

sudo systemctl enable pigpiod

• use gpiozero + pigpio @ pin 12,13,18,19

from gpiozero.pins.pigpio import PiGPIOFactory

from gpiozero import PWMLED

factory = PiGPIOFactory()

led = PWMLED(12, pin_factory=factory)

• loop 5 times and wait

led.pulse(2, 2, n=5, background=False)

• loop forever

led.pulse(2, 2, n=None, background=True)

參考資料：(官方說明文件)
限定 GPIO
啟動 daemon
import PiGPIO
指定 frequency, factory
調整 LED 亮度

#Arduino analogWrite 呼吸燈