Open Source Home Automation Project using Arduino UNO + Ethernet Shield

This is Open Source Home Automation Project based on Arduino Uno and Arduino Wiznet-based Ethernet shield. Open Source Home Automation Project using Arduino UNO + Ethernet Shield

How Does it Work

The main brain for this project is Arduino UNO Board along with Arduino Ethernet Shield to give it a wireless connectivity.Arduino runs a code to control a Relay board according to the input and also serves a web page through which respective output to the relay board can be controlled.Through relay controller board we can control lamps, tubes or any AC power sockets.
You will be able to control all of your AC Appliances wirelessly with the help of any WIFI Enabled device.

STEP 1:

 

Relay Controller Board Build Tutorial:

Quantity of the components depends upon how many channels you want e.g. if you want to control more than one light then you will have to add that much number of relays on your controller board.
Here is the material list which will be needed to build the board: (Quantity of the components given for making 1 channel relay controller)
 
 
Sr.No Component Names Quantity
1 Relay (I have used GOODSKY RWH-SH-105D Relay) 1
2 Transistor 2N3904 1
3 1K Resistor 2
4 10K Resistor 1
5 1N4148 Diode 1
6 Red Led 3mm 1
7 3 Pin PCB Mount Connector 1
8 1 Pin PCB Mount Connector 1
 
Above components are for making of single controller board you can multiply number of the components depending on how many relay controller you want. Relay Schematic Open Source Home Automation Project using Arduino UNO + Ethernet Shield
Here in the circuit diagram Pin no.2 will be connected to the arduino control output pin and other two will be connected to +5V and Gnd accordingly.
After soldering all of your components according to the above circuit diagram the board should look like this. Open Source Home Automation Project using Arduino UNO Ethernet Shield 1
Front View
Front View Open Source Home Automation Project using Arduino UNO + Ethernet Shield
Rear View
This is single relay controller board. You can extend this to as many as you want. I have made 5 channel relay controller board as below. Relay Controller Board Open Source Home Automation Project using Arduino UNO + Ethernet Shield
Relay 1 Controller Board Open Source Home Automation Project using Arduino UNO + Ethernet Shield
Relay 2 Controller Board Open Source Home Automation Project using Arduino UNO + Ethernet Shield

Note:

All the usual warnings apply: Mains voltage (120VAC or 220VAC) can kill you. This project, if done incorrectly, could certainly burn down your house. Do not work on or solder to any part of a project while it is plugged into the wall socket – just unplug it before modifying anything!
 
 

STEP 2:

Getting IP Address Of Arduino Ethernet Shield:

 
 Mount your Arduino Ethernet shield on Arduino Uno as shown: Step 2 Open Source Home Automation Project using Arduino UNO + Ethernet Shield
Step 2.1 Open Source Home Automation Project using Arduino UNO + Ethernet Shield
Now connect your Uno Board to PC with USB cable and open Arduino IDE. After Opening up you will find blank Arduino window. Now go to File–> Example –> Ethernet –> dhcp address printer sketch. Your Ethernet shields MAC address is printed on back of it as follow you will need this in DHCP ADDRESS PRINTER code to get the IP address of your Ethernet shield. Step 2.2 Open Source Home Automation Project using Arduino UNO + Ethernet Shield
In DHCP address printer sketch put your MAC address as given on back of the Ethernet shield and upload it to the Arduino board. Step 2.3 Open Source Home Automation Project using Arduino UNO + Ethernet Shield
After finished uploading connect Arduino Ethernet shield to internet with Ethernet cable once connected then open up you serial monitor of Arduino IDE the IP address allotted to your Ethernet shield will be displayed e.g. (xxx.xxx.x.xxx) note it down somewhere because you are going to need this in further codes.

STEP 3:

 
BuildingMainCircuitConnection :
 
Now we are ready with our Relay controller board. So, it’s time to move on to the Main Circuit Connections. Here I have given the pin configuration for the whole Autohome Project.
 
Arduino Digital Pin No. Pin Usage
4 will be used for Infrared Receiver
5 used as Output Pins to control Relays
6 used as Output Pins to control Relays
7 used as Output Pins to control Relays
8 used as Output Pins to control Relays
9 used as Output Pins to control Relays
10 will be used by Arduino Ethernet Shield
11 will be used by Arduino Ethernet Shield
12 will be used by Arduino Ethernet Shield
13 will be used by Arduino Ethernet Shield
 
Note: For relays it is recommended to power it from separate source not from Arduino (I have powered it from Arduino only but since here we are working with single board. As board number increases Arduino won’t be able to supply sufficient power to the boards.)
Here is the connection diagram: Connection Diagram Open Source Home Automation Project using Arduino UNO + Ethernet Shield
In this way you can do necessary soldering work to make following connection.
You can also make your own protoshield which can easily fit on top Arduino like this: Connection Open Source Home Automation Project using Arduino UNO Ethernet Shield 320x240 1
Connection 1 Open Source Home Automation Project using Arduino UNO Ethernet Shield 320x240 1
Once you finish soldering stuff, now you are ready for your main code upload.
 
 
STEP 4:
 
Uploading Arduino AutoHome code to the Board:
 
Here is the Arduino AutoHome code just copy and paste it into your Arduino IDE sketch.

//for use with IDE 1.0

//open serial monitor to see what the arduino receives

//use the \ slash to escape the ” in the html

//for use with W5100 based ethernet shields

// this project is hosted at

// http://code.google.com/p/arduino-autohome/

#include <

#include

byte mac[] = { 0x90, 0xA2, 0xDA, 0x0D, 0x78, 0xE0 }; // <——- PUT YOUR MAC Address Here

byte ip[] = { 192, 168, 1, 102 }; // <——- PUT YOUR IP Address Here

byte gateway[] = { 192, 168, 1, 254 }; // <——- PUT YOUR ROUTERS IP Address to which your shield is connected Here

byte subnet[] = { 255, 255, 255, 0 }; // <——- It will be as it is in most of the cases

EthernetServer server(80); // <——- It’s Defaulf Server Port for Ethernet Shield

String readString;

//////////////////////

void setup()

{

pinMode(6, OUTPUT); // Pin Assignment through which relay will be controlled

pinMode(7, OUTPUT);

pinMode(8, OUTPUT);

pinMode(9, OUTPUT);

//start Ethernet

Ethernet.begin(mac, ip, gateway, subnet);

server.begin();

//enable serial data print

Serial.begin(9600);

Serial.println(“server LED test 1.0”); // so that we can know what is getting loaded

}

void loop()

{

// Create a client connection

EthernetClient client = server.available();

if (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);

}

//if HTTP request has ended

if (c == ‘\n’) {

///////////////

Serial.println(readString); //print to serial monitor for debuging

/* Start OF HTML Section. Here Keep everything as it is unless you understands its working */

client.println(“HTTP/1.1 200 OK”); //send new page

client.println(“Content-Type: text/html”);

client.println();

//client.println(“”);

client.println(“”);

client.println(“”);

client.println(“”);

client.println(“”);

client.println(” “);

client.println(“”);

client.println(“”);

client.println(”


“);

client.println(”


“);

client.println(”
“);

client.println(”


“);

client.println(”


“);

client.println(”
“);

client.println(”
“);

client.println(”
“);

client.println(”
“);

client.println(”
“);

// Relay Control Code

client.println(“Turn On Light 1”);

client.println(“Turn Off Light 1
“);

client.println(”
“);

client.println(”
“);

client.println(”
“);

client.println(”
“);

client.println(“Turn On Light 2”);

client.println(“Turn Off Light 2
“);

client.println(”
“);

client.println(”
“);

client.println(”
“);

client.println(”
“);

client.println(“Turn On Light 3”);

client.println(“Turn Off Light 3
“);

client.println(”
“);

client.println(”
“);

client.println(”
“);

client.println(”
“);

client.println(“Turn On Light 4”);

client.println(“Turn Off Light 4
“);

client.println(”
“);

client.println(”
“);

// control arduino pin via ethernet Start //

if(readString.indexOf(“?relay1on”) >0)//checks for on

{

digitalWrite(6, HIGH); // set pin 4 high

Serial.println(“Led On”);

client.println(” “);

//client.println(“Light 1 Is On”);

client.println(”
“);

}

else{

if(readString.indexOf(“?relay1off”) >0)//checks for off

{

digitalWrite(6, LOW); // set pin 4 low

Serial.println(“Led Off”);

client.println(” “);

//client.println(“Light 1 Is Off”);

client.println(”
“);

}

}

if(readString.indexOf(“?relay2on”) >0)//checks for on

{

digitalWrite(7, HIGH); // set pin 4 high

Serial.println(“Led On”);

client.println(” “);

//client.println(“Light 2 Is On”);

client.println(”
“);

}

else{

if(readString.indexOf(“?relay2off”) >0)//checks for off

{

digitalWrite(7, LOW); // set pin 4 low

Serial.println(“Led Off”);

client.println(” “);

//client.println(“Light 2 Is Off”);

client.println(”
“);

}

}

if(readString.indexOf(“?relay3on”) >0)//checks for on

{

digitalWrite(8, HIGH); // set pin 4 high

Serial.println(“Led On”);

client.println(” “);

// client.println(“Light 3 Is On”);

client.println(”
“);

}

else{

if(readString.indexOf(“?relay3off”) >0)//checks for off

{

digitalWrite(8, LOW); // set pin 4 low

Serial.println(“Led Off”);

client.println(” “);

//client.println(“Light 3 Is Off”);

client.println(”
“);

}

}

if(readString.indexOf(“?relay4on”) >0)//checks for on

{

digitalWrite(9, HIGH); // set pin 4 high

Serial.println(“Led On”);

client.println(” “);

//client.println(“Light 4 Is On”);

client.println(”
“);

}

else{

if(readString.indexOf(“?relay4off”) >0)//checks for off

{

digitalWrite(9, LOW); // set pin 4 low

Serial.println(“Led Off”);

client.println(” “);

//client.println(“Light 4 Is Off”);

client.println(”
“);

}

}

// control arduino pin via ethernet End //

// Relay Status Display

client.println(”

“);
client.println(”

“);

client.println(”

“);

if (digitalRead(6))

{

client.print(”

“);

}

else

{

client.print(”

“);

}

client.println(”
“);

if (digitalRead(7))

{

client.print(”

“);

}

else

{

client.print(”

“);

}

client.println(”

“);

client.println(”

“);

if (digitalRead(8))

{

client.print(”

“);

}

else

{

client.print(”

“);

}

if (digitalRead(9))

{

client.print(”

“);

}

else

{

client.print(”

“);

}

client.println(”

“);

client.println(”

Light 1 is ON Light 1 is OFF Light 2 is ON Light 2 is OFF
Light 3 is ON Light 3 is OFF Light 4 is ON Light 4 is OFF

“);

client.println(”

“);

//clearing string for next read

readString=””;

client.println(“”);

          client.println("");




          delay(1);


          //stopping client


          client.stop();

        }


      }

    }

  }

}

So you will have the control page as shown below: Control Page Open Source Home Automation Project using Arduino UNO + Ethernet Shield

As you understand the code you can modify to your need.
So enjoy controlling things wirelessly..
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