import dht
from machine import Pin
import time

sensor = dht.DHT11(Pin(15))
warn_led = Pin(16, Pin.OUT)
TEMP_LIMIT = 30   # degrees Celsius

while True:
    try:
        sensor.measure()
        temp = sensor.temperature()
        hum = sensor.humidity()
        print(f"Temp: {temp}°C, Humidity: {hum}%")
        warn_led.value(1 if temp > TEMP_LIMIT else 0)
    except Exception as e:
        print("Sensor read error:", e)
    time.sleep(2)