from machine import Pin, PWM, ADC
import time

# RGB LED
r = PWM(Pin(13))
g = PWM(Pin(14))
b = PWM(Pin(15))
for led in (r, g, b):
    led.freq(1000)

# Single Indicator LED
indicator = Pin(12, Pin.OUT)

# Inputs
pot = ADC(26)
switch = Pin(18, Pin.IN, Pin.PULL_UP)

def set_color(brightness):
    r.duty_u16(brightness)
    g.duty_u16(brightness)
    b.duty_u16(brightness)

while True:
    sw = switch.value()

    if sw == 1:
        brightness = pot.read_u16()
        set_color(brightness)

        if 25000 < brightness < 45000:
            indicator.value(1)
        else:
            indicator.value(0)

    else:
        r.duty_u16(0)
        g.duty_u16(0)
        b.duty_u16(0)
        indicator.value(0)

    time.sleep(0.05)