Dhairya Parikh
Published © GPL3+

An Ethernet Powered Server for Home Automation

An WIZnet powered Arduino Server used for Home automation. The receiving end would be node MCU devices.

IntermediateFull instructions provided5 hours4,775
An Ethernet Powered Server for Home Automation

Things used in this project

Hardware components

Arduino UNO
Arduino UNO
The main server component, the Data transmitter
×1
NodeMCU ESP8266 Breakout Board
NodeMCU ESP8266 Breakout Board
one of the data receiver
×1
Breadboard (generic)
Breadboard (generic)
×1
USB-A to Micro-USB Cable
USB-A to Micro-USB Cable
powering the photon and node mcu
×1

Software apps and online services

WIZnet software
To setup the wiznet Ethernet connection for transmission of data commands
Arduino IDE
Arduino IDE

Story

Read more

Schematics

Server schematic

LED control nodeMCU

Home appliance control NodeMCU

Code

Node mcu code

C/C++
#include <ESP8266WiFi.h>
 
const char* ssid = "Dhairya";
const char* password = "paddword";
 
int ledPin = 13; // GPIO13
WiFiServer server(80);
 
void setup() {
  Serial.begin(115200);
  delay(10);
 
  pinMode(ledPin, OUTPUT);
  digitalWrite(ledPin, LOW);
 
  // Connect to WiFi network
  Serial.println();
  Serial.println();
  Serial.print("Connecting to ");
  Serial.println(ssid);
 
  WiFi.begin(ssid, password);
 
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("");
  Serial.println("WiFi connected");
 
  // Start the server
  server.begin();
  Serial.println("Server started");
 
  // Print the IP address
  Serial.print("Use this URL to connect: ");
  Serial.print("http://");
  Serial.print(WiFi.localIP());
  Serial.println("/");
 
}
 
void loop() {
  // Check if a client has connected
  WiFiClient client = server.available();
  if (!client) {
    return;
  }
 
  // Wait until the client sends some data
  Serial.println("new client");
  while(!client.available()){
    delay(1);
  }
 
  // Read the first line of the request
  String request = client.readStringUntil('\r');
  Serial.println(request);
  client.flush();
 
  // Match the request
 
  int value = LOW;
  if (request.indexOf("/LED=ON") != -1)  {
    digitalWrite(ledPin, HIGH);
    value = HIGH;
  }
  if (request.indexOf("/LED=OFF") != -1)  {
    digitalWrite(ledPin, LOW);
    value = LOW;
  }
 
// Set ledPin according to the request
//digitalWrite(ledPin, value);
 
  // Return the response
  client.println("HTTP/1.1 200 OK");
  client.println("Content-Type: text/html");
  client.println(""); //  do not forget this one
  client.println("<!DOCTYPE HTML>");
  client.println("<html>");
 
  client.print("Led pin is now: ");
 
  if(value == HIGH) {
    client.print("On");
  } else {
    client.print("Off");
  }
  client.println("<br><br>");
  client.println("<a href=\"/LED=ON\"\"><button>Turn On </button></a>");
  client.println("<a href=\"/LED=OFF\"\"><button>Turn Off </button></a><br />");  
  client.println("</html>");
 
  delay(1);
  Serial.println("Client disonnected");
  Serial.println("");
 
}
 

Arduino code

C/C++
#include <SoftwareSerial.h>

SoftwareSerial mySerial(10, 11);  //RX,TX

int LEDPIN = 13;
 
void setup() 
{
    pinMode(LEDPIN, OUTPUT);
 
    Serial.begin(9600);     // communication with the host computer
    //while (!Serial)   { ; }
 
    // Start the software serial for communication with the ESP8266
    mySerial.begin(115200);  
 
    Serial.println("");
    Serial.println("Remember to to set Both NL & CR in the serial monitor.");
    Serial.println("Ready");
    Serial.println("");    
}
 
void loop() 
{
    // listen for communication from the ESP8266 and then write it to the serial monitor
    if ( mySerial.available() )   {  Serial.write( mySerial.read() );  }
 
    // listen for user input and send it to the ESP8266
    if ( Serial.available() )       {  mySerial.write( Serial.read() );  }
}

Credits

Dhairya Parikh

Dhairya Parikh

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Project Developer | IoT and Machine Learning Enthusiast | Open Source Enthusiast |

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