from machine import *
from utime import sleep_ms

orange = PWM(Pin(1))
orange.freq(1000)
white = PWM(Pin(5))
white.freq(1000)
green = PWM(Pin(9))
green.freq(1000)

for bright in range(0, 65535, 100):
    orange.duty_u16(bright)
    sleep_ms(10)
    white.duty_u16(bright)
    sleep_ms(10)
    green.duty_u16(bright)
    sleep_ms(10)

orange.duty_u16(0)
white.duty_u16(0)
green.duty_u16(0)