Arduino Web Switch _ Turn Your Kettle on via Internet _ Www.hobbyist.co

8/10/2019 Arduino Web Switch _ Turn Your Kettle on via Internet _ Www.hobbyist.co

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Arduino Internet Web Switch

This wonder kit allows you to control any electric appliance from the internet.

What does that mean ?

That means you can turn ON/OFF any appliance at your home from your iphone, Android

the world..As long as you have access to a web browser.

Woooo..aint that an amazing power to lay your hands on.

What would I do with a Web Switch ?

I would do these:

Boil water for my coffee right from my bed with my Iphone

Turn on my Home heatpump when I leave to home from Work,

My home is warm and cozy by the time I arrive :)

Water my garden when I am on vacation

Rest I leave to your creative imagination to fill in............

What does the kit consist of ?

Arduino UNO

This is the CPU where the code and the webserver runs

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Cool kit which gives life to the l ights and makes them dance to the tune of the music..

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Ethernet shield

This shield allows the Arduino to talk to any other device connected via Internet.

The shield has an ethernet port which will be later used to connect the ethernet cable.

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Sensor Shield

This shield provides modular plugins to connect loads of things you want to control

For this example we will interface a Relay module to control power appliances

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Relay Module

This module allows the Arduino to turn ON/OFF power appliances

Read more about relays here

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Building the Arduino Web Switch

Stacking the shields

Place the Arduino at the bottom as below




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Plug the Ethernet Shield on top of the Arduino ( this is also called stacking , as we keep

Arduino )

Once thats done it would look like this.

Next step is to stack the height extender pins into the Ethernet shield ( This is necessary

sensor shield pins on to the Ethernet shield )

Once the height extender pins are plugged into the Ethernet shield it will look like the pi




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Stack the Sensor Shield on top of the Ethernet shield, as shown in pic below.

Wiring the Relay Module

Use the cable provided and connect it to the relay module as shown below




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Connect the other end to the Sensor shieldpin number 8, VCC and GND

TEST: Power up the arduino and you should see the GREEN led on relay module glowing

and make sure everything is correct.

Relay testing

We are about to test if the wiring is good and the relay turns ON and OFF.

Load this program into the arduino from this link.

What does this program do?

This program turn ON the RELAY module for a 3 secs and turns it OFF for another 2 secs

How do you know if the relay is turning on?

You hear a click every time the relay operates and you see the RED led glowing every ti

This test should test if the wiring it good and the arduino is able to control the relay.

Getting your Internet Web Switch to go.......




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Now that all the modules are tested, we are almost there..

The last bit which needs doing is to load the Web Switch code and turn your kettle on!

Follow the steps below in order

Download Ethernet shieldlibrary into libraries folder present in Arduino IDE instal

This step adds the library for getting the Ethernet Shield to work

Connect a Ethernet cable from the Arduino Ethernet shield to your PC/Laptop

Load this code (link provided on purchase) onto the Arduino.

Open up your favorite browser and copy this address onto it:

http://192.168.1.25

You will see the webpage shown below on the browser. This page is hosted on your Ardu

yes that tiny little piece of hardware can host a webpage :)

Now you can click the button on the page and hear your relay turn ON/OFF,

You are now able to control the Arduino via the Browser.

Turning the kettle ON!

Now we have a working Arduino Web Switch which can be controlled from a browser,

To control the Kettle you will need to connect the Relay as a switch for the Kettle.

Disclaimer: any modification work that involves high voltages should be done by a certif

provided by Hobbyist Ltd "as is" with no warranty of any kind whatsoever. It is your resp

proper functioning of your devices and applicances. Should you have any concern about

professional for advice.

The wiring is as below:


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VIDEO of the completed kit in action

Get a WebSwitch for yourself?




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#def i ne RELAY_PI N 8 / / Some damn probl em when i use 13, swi t ched t o 8 whi ch works!

voi d set up( ) {

/ * Set up Ser i al */ Ser i al . begi n( 9600) ; pi nMode( RELAY_PI N, OUTPUT) ;

di gi t al Wr i t e( RELAY_PI N, 0) ; / / swi t ch on LED del ay( 10) ;

}

voi d l oop( ) { i f ( di gi t al Read( RELAY_PI N) == LOW) { di gi t al Wr i t e( RELAY_PI N, 1) ; del ay( 3000) ; } el se { di gi t al Wr i t e( RELAY_PI N, 0) ; del ay( 2000) ;

}}

http://www.hobbyist.co.nz/sites/default/files/webswitch/code/Tes
http://www.hobbyist.co.nz/sites/default/files/webswitch/code/Test_Rela...http://www.hobbyist.co.nz/sites/default/files/webswitch/code/Test_Rela...

Arduino Web Switch _ Turn Your Kettle on via Internet _ Www.hobbyist.co

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