Esp8266 Smart Home Hosting – Hey guys, how are you? This weekend when I was thinking about what exciting things I could build on the SP NodeMQ board, an idea struck me, why not build a great home automation module that is compact and full of features that let you control your home appliances from anywhere. will help Inside the earth. So in this tutorial, I will show you step by step how to build a “Smart Home Automation Control System using NodeMcu ESP8266 Microcontroller”.
Home automation refers to the ability to make your own decisions based on the environmental conditions of your home and gives you the option to control it from a remote location. This smart home automation kit is specially designed to control your home’s AC devices using an Android app. It has four relays that act on the digital signals coming from the NodeMcu These two devices (NodeMcu and Android app) are connected to Google’s Firebase cloud database.
Esp8266 Smart Home Hosting
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Getting Started With The Esp8266. One Of The Drivers Behind The Explosive…
Fix all the hardware components on the PCB board Make sure to attach the components to the available destination slots on the PCB board After placing all the components in their destination, carefully sell them
Download both the library “ArduinoJson” and “Firebase-Arduino-master” files and add them to the Arduino library. The link to download these related files is attached below
Go to the Firebase console https://console.firebase.google.com/ and login with your email. After successfully login to the site, enter your project name by clicking on “Add Project” option. Then create the project database and enable it in “locked mode”. Now, change the option in the top left corner to “Realtime Database” and let Firebase code generate the database. Make some minor changes to the code as mentioned in the video above Copy the database URL and update it in the Arduino code Make sure to remove “Http:// and //” from the updated Arduino code Now go to the Firebase server, and go to the project settings, copy the verification code and update it in the Arduino code. Now update wifi SSID and password in Arduino code Update the code and upload it to Hardware Setup
Search for “MIT App Inventor 2” in the Google search bar Sign in with your email and import the “ai” file provided Follow the instructions mentioned in the video tutorial above Click the Firebase icon and update the Firebase URL and authentication code to their destination. Build the project, and now your smart home automation system is ready for testing!
Home Automation Over Online Server Using Nodemcu
Now test the circuit through your Android phone, check the operation of each relay connected to the circuit by pressing the “ON” and “OFF” buttons.
The main part of this “Smart Home Automation System” is the Node MCU which is considered as the brain or control device of the system. Data sent from IoT Android apps to a Firebase real-time database hosted in the cloud. The transmitted data is then received by the WiFi module connected to the node MCU Therefore, the node MCU receives and interprets the received data and performs the switching operation of the electrical devices connected to the relay.
Download all the important project files to automate this smart home from the link given below Includes files (code, app, circuit diagram, gerb file).
2N3904401 555 555 TIMER ADJUSTABLE VESERO AUDIO ENDO ENDO ENDO ENDO ENDO ENDO ENDO ENDO ENDO ENDO ENDO ENDO ENDO ENDO ENDO ENDO ENDO ENDO ENDO ENDO ENDO ENDO ENDO ENDO ENDO ENDO ENDO ENDO ENDO ENDO ENDO ENDO ENDO ENDO ENDO ENDO ENDO ENDO ENDO ENDO ENDO ENDO ENDO ENDO ENDO ENDO ENDO ENDO ENDO ENDO ENDO ENDO ENDO ENDO ENDO ENDO ENDO ENDO ENDO ENDO ENDO ENDO ENDO ENDO ENDO ENDO ENDO Sensor Timer Triac Ultrafast Diode Voltage Regulator Zener Diode Learn how to set up Wi-Fi communication (HTTP) between two ESP8266 NodeMCU boards to exchange data without connecting to the Internet (you don’t need a router).
Esp8266 Client Server Wi Fi Communication Between Two Boards (nodemcu)
You are going to set one ESP8266 as the access point (server) and the other ESP8266 as the station (client). Then, the server and client will exchange data (sensor readings) via HTTP requests We will program ESP8266 board using Arduino IDE
In this example, we will send BME280 sensor readings from one board to another board The receiver will display the reading on the OLED display
As an example, an ESP8266 client requests temperature, humidity, and pressure to the server by requesting /temperature, /humidity, and /pressure (HTTP GET), respectively, to the server’s IP address.
The ESP8266 server listens on those paths and when requested, it sends the corresponding sensor readings via an HTTP response.
Home Automation Using Nodemcu (esp8266) Board
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These libraries are not available to install through the Library Manager So, you need to unzip the libraries and move them to the Arduino IDE installation libraries folder.
The following libraries can be installed via the Arduino Library Manager Sketch > Include Libraries > Manage Libraries and find the library name
You need the following libraries to interface with OLED displays These can be installed via the Arduino Library Manager Sketch > Include Libraries > Manage Libraries and find the name of the library
Make It! Create With Esp8266 Wifi Board
The ESP8266 server is an access point (AP), which listens for requests to the /temperature, /humidity and /pressure URLs. When it receives requests for those URLs, it sends the latest BME280 sensor readings
For testing, we are using the BME280 sensor, but you can use any other sensor by changing a few lines of code (for example: DHT11/DHT22 or DS18B20).
Start by including the required libraries Include the ESP8266WiFi.h library and the ESPAsyncWebServer.h library to handle incoming HTTP requests.
We are setting the SSID to ESP8266-Access-Point, but you can give it any other name. You can also change the password By default, it is set to 123456789
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For example, when the ESP8266 receives a request to the server/temperature URL, it sends the temperature returned by the readTemp() function as a char (this is why we use the c_str() method).
Now, to make sure it is listening to temperature, humidity and pressure requests, you need to connect to its network.
If you are getting valid readings, it means everything is working properly Now, you need to prepare another ESP8266 board (client) to process those requests and display them on the OLED display.
The ESP8266 client is a Wi-Fi station that connects to the ESP8266 server The client requests temperature, humidity, and pressure from the server by making HTTP GET requests to the /temperature, /humidity, and /pressure URL paths. Then, it displays the reading on an OLED display
Configure Mqtt Runing On Esp8266 For Home Automation
Enter the ESP8266 server network ID If you have changed the default network credentials on the ESP8266 server, you will need to change them to match here.
Then, store the URLs where the client will make HTTP requests The ESP8266 server has an IP address of 192.168.4.1, and we will request the /temperature, /humidity and /pressure URLs.
Set the time interval between each request By default, this is set to 5 seconds, but you can change it to any other interval.
Note: If your OLED display is not working, check its I2C address using I2C scanner sketch and change the code accordingly.
Smart Home Automation System Using Nodemcu Esp8266
In loop() we make an HTTP GET request We’ve created a function called httpGETRequest() that takes as an argument the URL path to where we want to make the request and returns the response as a string.
Instead of a delay we use a timer to request every x number of seconds So we have the PreviousMills, CurrentMills variable and use the Mills() function. We have an article that shows the difference between timers and delays that you might find useful (or read ESP8266 timers).
With both boards off and powered together, you’ll see that ESP #2 is receiving new temperature, humidity, and pressure readings from ESP #1 every 5 seconds.
In this tutorial we showed you how to send data from one ESP8266 board to another using HTTP requests. This project can be very useful if you need to set up a wireless communication between two boards or more and you don’t have a router.
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For demonstration purposes, we have shown how to send the BME280 sensor reading, but you can use any other sensor or send any other data. Other Recommended Sensors:
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Home Automation Using Google Firebase & Nodemcu Esp8266
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