Arduino MEGA 2560 Home automation with 8 channel relay

 

Step 1: What You Need?

1 x Arduino Mega 2560
1 x USB Type-B Cable 
1 x Ethernet Shield 
1 x 8 Channel Relay 
1 x LAN Cable
Female-to-Male Jumper Wires1 x Computer with Arduino IDE installed


Optional
1 x Mini Breadboard
Male-to-Male Jumper Wires 
USB To Power Jack Cable

Don't have components? Don't worry. Just click the component's name. 

Step 2: Build Your Circuit.

Connect wire like the schematic above.

Step 3: Upload The Code.

You need to include the SPI and Ethernet Libraries.

You probably need to change the IP Address and gateway. Subnet will be as it is in most cases.

You can find this below on the top of the code to change IP and gateway.

byte mac[] = { 0xAE, 0xFE, 0xDE, 0xEF, 0xFD, 0xFD }; //You can change the mac address to!

byte gateway[] = { 192, 168, *, *** }; //

byte subnet[] = { 255, 255, 255, 0 }; //

ip(192,168,*,**);


To find out what your gateway:

Select Start > Run. Type command into the dialog box, then click OK.In the command line window, type ipconfig /all.

Here you will find your gateway.

To find the control panel. Just go to the IP address you assigned to the Ethernet Shield in your browser, phone or tablets browser. From here you can Control each relay.

Download:

Arduino IDE

Source: http://www.instructables.com/id/Arduino-MEGA-2560-Home-Automation-With-8-Channel-R/?ALLSTEPS

8 Channel Relay Arduino MEGA 2560 easy Ethernet Shield project Relay