http://pluggy.is-a-geek.com/
The heating controls link which you can't access does that. In this case the Arduino is connected to the webserver by USB, the earlier link is a remote arduino with ethernet shield that provides the data for the Church graphs at the bottom of the above link.
It all kind of depends on how you want the webpage to interact with the arduino and its relationship with the server.
#include
#include
/*
Simple Ethernet Test
Arduino server outputs simple text to browser
The circuit:
* Arduino Duemilanove
* Arduino Ethernet shield
* Basic FTDI breakout 5V
*LED connected to GND and digital pin 4 via resistor
By Minde
http://www.sciencprog.com/
*/
byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED }; //physical mac address
byte ip[] = { 192, 168, 0, 140 }; // ip in lan
byte gateway[] = { 192, 168, 0, 254 }; // internet access via router
byte subnet[] = { 255, 255, 255, 0 }; //subnet mask
Server server(80); //server port
byte sampledata=50; //some sample data - outputs 2 (ascii = 50 DEC)
int ledPin = 4; // LED pin
char link[]="http://www.scienceprog.com/"; //link data
String readString = String(30); //string for fetching data from address
boolean LEDON = false; //LED status flag
void setup(){
//start Ethernet
Ethernet.begin(mac, ip, gateway, subnet);
//Set pin 4 to output
pinMode(ledPin, OUTPUT);
//enable serial datada print
Serial.begin(9600);
}
void loop(){
// Create a client connection
Client client = server.available();
if (client) {
while (client.connected()) {
if (client.available()) {
char c = client.read();
//read char by char HTTP request
if (readString.length() < 30)
{
//store characters to string
readString.append(c);
}
//output chars to serial port
Serial.print(c);
//if HTTP request has ended
if (c == '\n') {
//lets check if LED should be lighted
if(readString.contains("L=1"))
{
//led has to be turned ON
digitalWrite(ledPin, HIGH); // set the LED on
LEDON = true;
}else{
//led has to be turned OFF
digitalWrite(ledPin, LOW); // set the LED OFF
LEDON = false;
}
// now output HTML data starting with standart header
client.println("HTTP/1.1 200 OK");
client.println("Content-Type: text/html");
client.println();
//set background to yellow
client.print("");
//send first heading
client.println("HTTP test routines
");
client.println("
");
client.println("
");
//output some sample data to browser
client.println("Sample data: ");
client.print(sampledata);//lets output some data
client.println("
");//some space between lines
client.println("
");
//drawing simple table
client.println("Simple table: ");
client.println("
");
client.println("| row 1, cell 1 | row 1, cell 2 |
");
client.println("| row 2, cell 1 | row 2, cell 2 |
");
client.println("
");
client.println("
");
//printing some link
client.println("Link: ");
client.print("Visit Scienceprog!");
client.println("
");
client.println("
");
//controlling led via checkbox
client.println("LED control
");
//address will look like http://192.168.1.110/?L=1 when submited
client.println("");
client.println("
");
//printing LED status
client.print("LED status: ");
if (LEDON)
client.println("ON");
else
client.println("OFF");
client.println("
");
client.println("
");
client.println("
