from machine import Pin, PWM
import time

# Define GPIO pins for the LEDs
led_pins = [17, 16, 15, 14]
leds = [PWM(Pin(pin)) for pin in led_pins]

# Function to set LED brightness
def set_brightness(duty_cycle):
    for led in leds:
        led.duty_u16(int(duty_cycle * 65535 / 100))

# Simulating command input
while True:
    command = input("Enter command (off, 25, 50, 75, 100): ").strip()
    if command == "off":
        set_brightness(0)
    elif command == "25":
        set_brightness(25)
    elif command == "50":
        set_brightness(50)
    elif command == "75":
        set_brightness(75)
    elif command == "100":
        set_brightness(100)
    else:
        print("Invalid command")