Today we added a DHT sensor to our project and DHT measures the temperature and humidity of outside atmosphere and tells us on the app what the temperature and the humidity is  outside. We had some problems adding it so we looked up some websites and then we fixed the problem and the problem was we couldn't receive the values from the DHT sensor, so as i said we visited some websites and then we solved the problem it took us some time but we fixed it and the project is almost done.