best method to use html buttons as an input to an arduino with ethernet shield

I'm looking to use buttons on a web page as an input to an arduino hooked up to an ethernet shield, when a button is pressed a list inside a text field is then updated. Any suggestions how best to do achieve this.

anyone got a link to a tutorial that may show how to achieve this?

After some research ive come up with the following concept.

Arduino hosts a web page using files stored on a sd card.

use on click submit, to send a get request to the arduino.

use XML to update the text field

any help is greatly appreciated. Im not very sharp with html, ive done some limited javascript in the past.

Any suggestions how best to do achieve this.

Just like you would if a PC was the server.

use XML to update the text field

Why? Why wrap some simple text in a difficult to parse wrapper?

Im not sure how id use a pc server. as for the xml my hope would be that it would make it easier to add more function later.

Im not sure how id use a pc server

So, you know nothing about HTML or client/server programming. That's going to present a challenge.

as for the xml my hope would be that it would make it easier to add more function later.

You can't even walk, yet, but you're shopping for ultra marathon shoes. Great idea.

Simple server code that produces a web page with a text box.

//zoomkat 12-08-12
//get submit box code
//for use with IDE 1.0
//open serial monitor to see what the arduino receives
//use the \ slash to escape the " in the html or use a '
//address will look like when submited
//for use with W5100 based ethernet shields
//note that the below bug fix may be required

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

byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED }; //physical mac address
byte ip[] = { 192, 168, 1, 102 }; // 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(5, OUTPUT); //pin selected to control
  //start Ethernet
  Ethernet.begin(mac, ip, gateway, gateway, subnet);

  //enable serial data print 
  Serial.println("server text box test1"); // 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); //see what was captured

          //now output HTML data header

          client.println("HTTP/1.1 200 OK");
          client.println("Content-Type: text/html");

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

          client.println("<H1>HTML form GET example</H1>");

          client.println("<FORM ACTION='/' method=get >"); //uses IP/port of web page

          client.println("Pin 5 'on5' or 'off5': <INPUT TYPE=TEXT NAME='LED' VALUE='' SIZE='25' MAXLENGTH='50'>

          client.println("<INPUT TYPE=SUBMIT NAME='submit' VALUE='Change Pin 5!'>");




          //stopping client

          if(readString.indexOf("on5") >0)//checks for on
            digitalWrite(5, HIGH);    // set pin 5 high
            Serial.println("Led On");
          if(readString.indexOf("off5") >0)//checks for off
            digitalWrite(5, LOW);    // set pin 5 low
            Serial.println("Led Off");
          //clearing string for next read


I have already completed the controlling of devices through internet using buttons.I used Arduino Uno+ SD CARD+ Ethernet sheild. Now I want to modify it so that used can send text commands through form submission to control the same.

I could do it when I was using the Arduino Uno Memory for HTML code but now facing problems when I am using SD Card for HTML.

Expecting the code for the same [Arduino + Ethernet + SD CARD + HTML Form submission].

Probably best to start your own question discussion thread and post the code you have instead of reopening old discussions.