dht11_raspberryPI.py

# initialize GPIO
GPIO.setwarnings(False)
GPIO.setmode(GPIO.BCM)
GPIO.cleanup()

# read data using pin 14
instance = dht11.DHT11(pin=14)


while True:
    result = instance.read()
    if result.is_valid():
        file = open('room.txt','a')
        text = str(datetime.datetime.now()) + ',' + str(result.temperature) + ','
        text += str(result.humidity) + '\n'
        file.write(text)
        file.close()
        print("Last valid input: " + str(datetime.datetime.now()))
        print("Temperature: %d C" % result.temperature)
        print("Humidity: %d %%" % result.humidity)

    time.sleep(60)