# import libraries 
from machine import Pin 
import dht
import time  

# Configure GPIO
dht_pin = Pin(16) 
relay = Pin(7, Pin.OUT)

# Initialize DHT11 sensor
sensor_dht11 = dht.DHT22(dht_pin)

# functions 
# control relay 
def relay_control(con):
    if con == "on":
        relay.on()
    else:
        relay.off()

# measure the dht11 values
def read_dht_11():
    try:
        # Measure temperature
        sensor_dht11.measure() 
        temp = sensor_dht11.temperature()
        return temp
    except OSError as e:
        return "error"

# main code

while True:
    temperature = read_dht_11()
    print(temperature)
    if temperature != "error":
        if temperature > 35:
            relay_control("on")
            print("relay on")
        else:
            relay_control("off")
            print("relay off")

    time.sleep(2)