control Arduni over internet

Hello all,

I am a self taught coder and tech guy, Im looking to incorporate some home automation within my home. To start with I would like be able to control some LED strips from a internet portal just like this:

I really like this idea, however here are my issues

1 - I want a few of these around the living room and kitchen so having a pi per led will be expensive.

2 - I also want to be able to control the pre programmed set up's e.g. strobe, flash etc.

Here are my thoughts:

Arduino contected to the controller buttons that I will be using that sends a IR to the strip at close range (1 arduino per strip). All I need to know is what is the best way to control the ardunio over the internet. Im not worried that I will have to use 1 power socket per strip and unit.

Heres the other issue, I want to be able to build of this web portal and need it PHP so that the URL will not change when a button is clicked.

can anyone assist?

Regards - Aiden

If you search the internet for "arduino internet blink" you will find lots of different ways to do this- Which one you choose depends on your network setup- You will need a different approach if your webserver is located on the public internet and your arduino/pi is behind a home router than if they are on the same network.

The simplest way is to set up your web service with URL for human interaction and a second one that is polled regularly by the Pi. The logic on the web server takes input from the human URL and writes a list of easily-machine-readable data to the Pi URL. The Pi will regularly download this list of data and perform actions based upon it.

Very simple web server that controls a pin on the arduino.

//zoomkat 10-6-13
//simple button GET with iframe code
//open serial monitor to see what the arduino receives
//use the ' instead of " in html ilnes 
//address will look like when submited
//for use with W5100 based ethernet shields

#include <SPI.h>
#include <Ethernet.h>

byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED }; //ethernet shield mac address
byte ip[] = { 192, 168, 1, 102 }; // arduino IP in lan
byte gateway[] = { 192, 168, 1, 1 }; // internet access via router
byte subnet[] = { 255, 255, 255, 0 }; //subnet mask
EthernetServer server(84); //server port

String readString; 


void setup(){

  pinMode(4, OUTPUT); //pin selected to control
  //start Ethernet
  Ethernet.begin(mac, ip, gateway, gateway, subnet);

  //enable serial data print 
  Serial.println("servertest1"); // so I can keep track of what is loaded

void loop(){
  // Create a client connection
  EthernetClient client = server.available();
  if (client) {
    while (client.connected()) {
      if (client.available()) {
        char c =;

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

          //store characters to string 
          readString += c; 

        //if HTTP request has ended
        if (c == '\n') {

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

          //now output HTML data header
             if(readString.indexOf('?') >=0) { //don't send new page
               client.println("HTTP/1.1 204 Zoomkat\r\n\r\n");
             else {
          client.println("HTTP/1.1 200 OK"); //send new page
          client.println("Content-Type: text/html");

          client.println("<TITLE>Arduino GET test page</TITLE>");

          client.println("<H1>Zoomkat's simple Arduino button</H1>");
          client.println("<a href='/?on1' target='inlineframe'>ON</a>"); 
          client.println("<a href='/?off' target='inlineframe'>OFF</a>"); 

          client.println("<IFRAME name=inlineframe style='display:none'>");          


          //stopping client

          ///////////////////// control arduino pin
          if(readString.indexOf("on1") >0)//checks for on
            digitalWrite(4, HIGH);    // set pin 4 high
            Serial.println("Led On");
          if(readString.indexOf("off") >0)//checks for off
            digitalWrite(4, LOW);    // set pin 4 low
            Serial.println("Led Off");
          //clearing string for next read