from machine import Pin,ADC,PWM
import time

red = Pin(13, Pin.OUT)
blue = Pin(14, Pin.OUT)
green = Pin(15, Pin.OUT)

pot = ADC(27)
buzzer=PWM(Pin(15))

while True:
    value = pot.read_u16()
    temperature = (value / 65535) * 100

    red.off()
    green.off()
    blue.off()

    if temperature > 60:
        blue.on()
        buzzer.freq(2500)
        buzzer.duty_u16(30000)
    elif temperature > 30:
        green.on()
        buzzer.duty_u16(0)
    else:
        red.on()
        buzzer.duty_u16(0)

    time.sleep(0.5)