from machine import Pin, PWM
import dht
import time

dht_pin = 14  
buzzer_pin = 15  
led_pin = 2  

dht_sensor = dht.DHT22(Pin(dht_pin))
buzzer_pwm = PWM(Pin(buzzer_pin), freq=440, duty=0)
led = Pin(led_pin, Pin.OUT)

while True:
    dht_sensor.measure()
    temperature = dht_sensor.temperature()
    humidity = dht_sensor.humidity()

    if temperature > 30 or humidity > 90:
        buzzer_pwm.duty(50) 
        print("Temperature or humidity exceeded. Buzzer ON!")
        led.value(1)
    else:
        buzzer_pwm.duty(0)
        led.value(0)

    time.sleep(2)