from machine import Pin
import dht
import time

# Relay setup (Active LOW relay)
relay = Pin(17, Pin.OUT)
relay.value(1)   # Relay OFF

# DHT22 setup
sensor = dht.DHT22(Pin(4))

while True:
    try:
        sensor.measure()
        temperature = sensor.temperature()
        humidity = sensor.humidity()

        print("Temperature:", temperature, "°C")
        print("Humidity:", humidity, "%")

        if temperature > 30:
            relay.value(0)   # Relay ON
            print("Relay ON (Fan/Bulb ON)")
        else:
            relay.value(1)   # Relay OFF
            print("Relay OFF")

    except Exception as e:
        print("Sensor error:", e)

    time.sleep(2)