from machine import Pin, PWM
import dht
import time

sensor = dht.DHT22(Pin(15))
servo = PWM(Pin(14))
servo.freq(50)

def set_angle(angle):
    duty = int(2000 + (angle / 180) * 6000)
    servo.duty_u16(duty)

while True:
    sensor.measure()
    temp = sensor.temperature()
    print("Temperature:", temp)

    if temp > 30:
        set_angle(0)   # Open vent
        print("Vent OPEN")
    else:
        set_angle(90)    # Close vent
        print("Vent CLOSED")

    time.sleep(2)