HOW TO CONNECT THE ARDUINO UNO ETHERNET CONTROLLER

HOW TO CONNECT THE ARDUINO UNO ETHERNET CONTROLLER

 

The step wise procedure to control the Arduino Uno Ethernet Controller

Step 1: Parts

An Arduinouno

A Breadboard
An Arduino Ethernet Shield
An LED
Connecting Wires
An Ethernet cable 

Step 2: Initial Hardware Set Up

The newer Arduino Ethernet Shield come with the Mac Address which is written on the back of it.
First you write it down separately and then attach the shield to the arduinouno board.

Second,just plug in the header pins from the shield into your Arduino.

The Arduino Ethernet Shield is connected to your network via your router with the help of Ethernet cable.Use the ethernet cable to connect your Arduino Ethernet Shield to your Network via your Router.

The Ethernet shield should connected to pins 10, 11, 12, 13 so those cannot be used.

The positive end of led should be connected to pin 8 and the negative end of the LED to ground on the Ethernet shield.

Step 3: Acquiring MAC Address, IP Address, Port Number

The newer shield is coming with the mac address written on the back of it.

The IP address will be dependent on your local network and to find that out you can use ComamndPromt.
Open up command promt and type in "ipconfig"

It should then show you your IP Address,default gateway and your subnet mask

You will also need the port you want to use.Port 80 is default for HTTP.

Step 4:

/*
  Web Server
A simple web server
Circuit:
* Ethernet shield attached to pins 10, 11, 12, 13
*/
//-------------------------------------------------------------------------------------------------------
#include <SPI.h>
#include <Ethernet.h>

// Enter a MAC address and IP address for your controller below.
byte mac[] = {0x90, 0xA2, 0xDA, 0x0D, 0x48, 0xD3 };

// The IP address will be dependent on your local network:
// assign an IP address for the controller:

IPAddressip(192,168,1,20);
IPAddress gateway(192,168,1,1);
IPAddress subnet(255, 255, 255, 0);

// Initialize the Ethernet server library with the port you want to use.
EthernetServerserver(8081);
String readString;
//-------------------------------------------------------------------------------------------------------
//-------------------------------------------------
// Any extra codes for Declaration :

// Declare Pin 8 as an LED because thats what we will be connecting the LED to.You could use any other pin and would then have to change the pin number.
int led = 8;

//-------------------------------------------------
//-------------------------------------------------------------------------------------------------------
void setup()
{
//-------------------------------------------------

// Extra Set up code:
pinMode(led, OUTPUT); //pin selected to control

//-------------------------------------------------
//-------------------------------------------------------------------------------------------------------
//enable serial data print
  Serial.begin(9600);

  //start Ethernet
  Ethernet.begin(mac, ip, gateway, subnet);
  server.begin();
  Serial.print("Server is at ");
  Serial.println(Ethernet.localIP());
  Serial.println("LED Controller Test 1.0");
}
//-------------------------------------------------------------------------------------------------------
//-------------------------------------------------------------------------------------------------------

void loop()
{
  // listen for incoming clients
  EthernetClient client = server.available();
  if (client)

  {
    Serial.println("new client");

    while (client.connected())
    {
      if (client.available())

      {
        char c = client.read();

        //read char by char HTTP request
        if (readString.length() < 100)

        {

          //store characters to string
          readString += c;
          //Serial.print(c);


          Serial.write(c);
          // if you've gotten to the end of the line (received a newline
          // character) and the line is blank, the http request has ended,
          // so you can send a reply
          //if HTTP request has ended
          if (c == '\n') {
            Serial.println(readString); //print to serial monitor for debuging
//--------------------------------------------------------------------------------------------------------
// Needed to Display Site:
client.println("HTTP/1.1 200 OK"); //send new page
            client.println("Content-Type: text/html");
            client.println();
            client.println("<HTML>");
            client.println("<HEAD>");

//--------------------------------------------------------------------------------------------------------
//-------------------------------------------------

// what is being Displayed :     
        
            client.println("<TITLE>Home Automation</TITLE>");
             client.println("<center>");
            client.println("</HEAD>");
            client.println("<BODY>");
            client.println("<H1>Home Automation</H1>");
            client.println("<hr />");
            client.println("<center>");

            client.println("<a href=\"/?lighton\"\">Turn On Light</a>");
            client.println("<br />");
            client.println("<br />");
            client.println("<a href=\"/?lightoff\"\">Turn Off Light</a><br />");     

            client.println("</BODY>");
            client.println("</HTML>");

            delay(1);
            //stopping client
            client.stop();

            //-------------------------------------------------
            // Code which needs to be Implemented:
            if(readString.indexOf("?lighton") >0)//checks for on
            {
              digitalWrite(8, HIGH);    // set pin 8 high
              Serial.println("Led On");
            }
            else{
              if(readString.indexOf("?lightoff") >0)//checks for off
              {
                digitalWrite(8, LOW);    // set pin 8 low
                Serial.println("Led Off");
              }
            }
            //clearing string for next read
            readString="";

            // give the web browser time to receive the data
            delay(1);
            // close the connection:
            client.stop();
            Serial.println("client disonnected");

          }
        }
      }
    }
  }
}