details
Description:
This tutorial we will see how to control home devices with Arduino Uno and Ethernet shield through a page on your browser. So you can access it from any device within the same network, even via WI-Fi . Useful for your IOT and home automation projects without excessive costs.
Components:
Arduino Uno
Ethernet shield
4 channel relay module
Male/female cables.
Circuit Diagram:
/*
Created by Salvatore Fancello
Visit: http://progettiarduino.com for more arduino projects
Arduino Uno with Ethernet Shield Webserver
*/
#include <SPI.h>
#include <Ethernet.h>
int led1 = 2; //relay1
int led2 = 3; //relay2
int led3 = 4; //relay3
int led4 = 5; //relay4
byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED }; // mac address
byte ip[] = { 192, 168, 1, 89 }; // configurate il vostro IP a vostra scelta("192.168.1.89")
byte gateway[] = { 192, 168, 1, 1 }; // internet access router
byte subnet[] = { 255, 255, 255, 0 }; //subnet mask
EthernetServer server(80); //server port
String readString;
void setup() {
// Apro la comunicazione seriale:
Serial.begin(9600);
while (!Serial) {
; // wait for serial port to connect. Needed for Leonardo only
}
//Imposto i pin come OUTPUT
pinMode(led1, OUTPUT);
pinMode(led2, OUTPUT);
pinMode(led3, OUTPUT);
pinMode(led4, OUTPUT);
// Inizio la comunicazione Ethernet con il server:
Ethernet.begin(mac, ip, gateway, subnet);
server.begin();
Serial.print("server is at ");
Serial.println(Ethernet.localIP());
}
void loop() {
// Creo una connessione al client
EthernetClient client = server.available();
if (client) {
while (client.connected()) {
if (client.available()) {
char c = client.read();
//Leggo i caratteri da HTTP
if (readString.length() < 100) {
//Inserisco i caratteri nella stringa
readString += c;
//Serial.print(c);
}
//Se la richiesta HTTP è andata a buon fine
if (c == '\n') {
Serial.println(readString); //scrivi sul monitor seriale per debugging
client.println("HTTP/1.1 200 OK"); //Invio nuova pagina
client.println("Content-Type: text/html");
client.println();
client.println("<HTML>");
client.println("<HEAD>");
client.println("<meta name='apple-mobile-web-app-capable' content='yes' />");
client.println("<meta name='apple-mobile-web-app-status-bar-style' content='black-translucent' />");
client.println("<link rel='stylesheet' type='text/css' href='http://www.progettiarduino.com/uploads/8/1/0/8/81088074/style3.css' />");
client.println("<TITLE>Controllo Dispositivi da Remoto</TITLE>");
client.println("</HEAD>");
client.println("<BODY>");
client.println("<H1>Controllo Dispositivi da Remoto</H1>");
client.println("<hr />");
client.println("<br />");
client.println("<H2>Arduino UNO con Ethernet Shield</H2>");
client.println("<br />");
client.println("<a href=\"/?button1on\"\">Accendi LED 1</a>"); //Modifica a tuo piacimento:"Accendi LED 1"
client.println("<a href=\"/?button1off\"\">Spegni LED 1</a><br />"); //Modifica a tuo piacimento:"Spegni LED 1"
client.println("<br />");
client.println("<br />");
client.println("<a href=\"/?button2on\"\">Accendi LED 2</a>"); //Modifica a tuo piacimento:"Accendi LED 2"
client.println("<a href=\"/?button2off\"\">Spegni LED 2</a><br />"); //Modifica a tuo piacimento:"Spegni LED 2"
client.println("<br />");
client.println("<br />");
client.println("<a href=\"/?button3on\"\">Accendi LED 3</a>"); //Modifica a tuo piacimento:"Accendi LED 3"
client.println("<a href=\"/?button3off\"\">Spegni LED 3</a><br />"); //Modifica a tuo piacimento:"Spegni LED 3"
client.println("<br />");
client.println("<br />");
client.println("<a href=\"/?button4on\"\">Accendi LED 4</a>"); //Modifica a tuo piacimento:"Accendi LED 4"
client.println("<a href=\"/?button4off\"\">Spegni LED 4</a><br />"); //Modifica a tuo piacimento:"Spegni LED 4"
client.println("<br />");
client.println("<p>Creato da Salvatore Fancello. Visita http://progettiarduino.com per altri progetti!</p>");
//Sostieni il blog visita: http://www.progettiarduino.com/sostieni-il-blog.html
client.println("<br />");
client.println("</BODY>");
client.println("</HTML>");
delay(1);
client.stop();
//Controlli su Arduino: Se è stato premuto il pulsante sul webserver
if (readString.indexOf("?button1on") >0){
digitalWrite(led1, HIGH);
}
if (readString.indexOf("?button1off") >0){
digitalWrite(led1, LOW);
}
if (readString.indexOf("?button2on") >0){
digitalWrite(led2, HIGH);
}
if (readString.indexOf("?button2off") >0){
digitalWrite(led2, LOW);
}
if (readString.indexOf("?button3on") >0){
digitalWrite(led3, HIGH);
}
if (readString.indexOf("?button3off") >0){
digitalWrite(led3, LOW);
}
if (readString.indexOf("?button4on") >0){
digitalWrite(led4, HIGH);
}
if (readString.indexOf("?button4off") >0){
digitalWrite(led4, LOW);
}
//Cancella la stringa una volta letta
readString="";
}
}
}
}
}
Demo:
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