IoTemperature

It's an android Application to measure Temperature and Humidity of room and give you real time updates

How it works

1. This android application works on IoT
2. We have deployed our hardware on NodeMCu. We are detecting Temperatute and Humidity data from DHT11 sensor.
3. then these values are parced into JSON Array.
4. Host a webserver at port 80 from nodemcu
5. Print JSON array to webserver. You can find the ESP32 application espAndroid2.ino
6. At android part we are reading the JSON array from web server
7. deserialize JSON Array to get useful values
8. refresh it
9. You can find the apk in repo IoTemperature

Usage

Getting Data from webserver

1. connect to following url:

url =new URL("http://192.168.1.102/Feed");

2. open the url connection using HttpUrlConnection:

JSONObject jsonObject = new JSONObject(s);
JSONArray jsonArray = jsonObject.getJSONArray("temp");              

JSON Array

Our JSON contains two arrays temp store temperature values and humid store humidity values:

{
 "device": "NodeMcu-12E",
 "sensorType": "DHT11",
 "temp": [
    "29.0"
  ],
  "humid": [
    "80.0"
  ]
}

Profile

Credits

1. Arduino JSON: https://arduinojson.org/v5/doc/encoding/
2. ESP8266: https://links2004.github.io/Arduino/d3/d58/class_e_s_p8266_web_server.html