from machine import Pin, PWM
import time

LED_BUITLTIN = 25 # For Raspberry Pi Pico

pwm_led = PWM(Pin(LED_BUITLTIN, mode=Pin.OUT)) # Attach PWM object on the LED pin
pwm_led.freq(1_000)

pwm_led1 = PWM(Pin(0, mode=Pin.OUT)) # Attach PWM object on the LED pin
pwm_led1.freq(1_000)


while True:
    for duty in range(0,65_535,500): # Duty from 0 to 100 %
        pwm_led.duty_u16(duty)
        pwm_led1.duty_u16(duty)
        time.sleep_ms(10)
        print(duty)
    for duty in range(65_535,0,-500): # Duty from 0 to 100 %
        pwm_led.duty_u16(duty)
        pwm_led1.duty_u16(duty)
        time.sleep_ms(10)
        print(duty)