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These two components measure humidity and temperature. They are internally composed of a humidity sensing sensor and a thermistor. We can directly connect them with ESP32/ESP8266 to obtain sensor output reading. It is very inexpensive but it gives values of both temperature and humidity simultaneously. An 8-bit MCU is also connected in it which is responsible for its fast response. It has a resistive humidity sensing component and a negative temperature coefficient (NTC). Working Process Introduction to DHT11 sensorĭHT11 sensor is used to measure the temperature and humidity.
#Android serial library android
Thus, we could access the temperature and humidity readings in a device that has MIT Inventor installed on it e.g., our android smartphone/tablet. We will include Google Firebase’s database inside our IoT app through MIT App Inventor.The ESP32 module will transmit the sensor data to the Google Firebase server.DHT11 sensor will send temperature and humidity reading to the ESP32 development board.Android Smartphone with MIT AI2 Companion installed Working Process.We will require the following for our project:
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#Android serial library update
These readings will automatically update to new values in real-time when the IoT app receives them. This transmission of data from the module to the application will occur via Google Firebase. We aim to build an application that will display sensor readings obtained from DHT11 connected with the ESP32 module programmed in Arduino IDE. The heading of the app will consist of “ESP32 & DHT11 Sensor APP” followed by first ‘Temperature’ and its reading and then ‘Humidity’ and its reading with appropriate units. We will create an IoT app through Google firebase and MIT App Inventor.
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This time we will build our ESP32 application which will display sensor readings on our smartphone. Previously, we used the Blynk application to control ESP32’s output ( Control ESP32 Outputs using Blynk App and Arduino IDE). We will make our personal ESP32 IOT app by using Google Firebase and MIT App Inventor. In this user guide, we will learn to send sensor readings to Google firebase and also on Android app through Google Firebase using ESP32 and Arduino IDE.