Guidance needed for home automation

Hello from Greece!

I’m Vasso , newbie in programming but with lot of experience in hardware/electronics. I’m mechanical engineer.

For couple of weeks I’m planning a home automation (one more) and I have search a lot to find a solutions that its covered my needs .i haven’t find anything that can combine all the stuff that I want to do. So guidance is needed. I want to control all the bellow through a website from 2 or 3 pcs in the house. That’s the easy part, I have find many examples, but exept the ajax I/o I haven’t find anything that update the status of the led/light. And except that I prefer to have the site local in my pc web server. So I supposed that the arduino will act like a client . What is the best solution to do all that?

My equipment : Arduino Mega 2560,Ethernet shield, 8 relay boards, 8 physical buttons for the relay, Ir remote for controlling the relay , Ir sensor for the remote, RFID Reader ID-12 (125 kHz) for entrance control, Servo motor for opening the door,2 temperature sensors (steel head waterproof /2 wires indoor-outdoor temp), Hacked remote control for 3 plugs (6 buttons for on/off-6 pins and 1 common GND), Led stripe for the stairs of 1st floor with PWM ,Ip Camera.

As I already said, I’m new to programming (I have used html to build a simple website) so any examples are welcome!

Thanks in advance

thats the code for the arduino
(i had to delete the comments in arduino sketch for maximun characters restriction)

#include <SPI.h>
#include <Ethernet.h>
#include <SD.h>
// size of buffer used to capture HTTP requests
#define REQ_BUF_SZ   60

// MAC address from Ethernet shield sticker under board
byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
IPAddress ip(192, 168, 0, 20); // IP address, may need to change depending on network
EthernetServer server(80);  // create a server at port 80
File webFile;               // the web page file on the SD card
char HTTP_req[REQ_BUF_SZ] = {0}; // buffered HTTP request stored as null terminated string
char req_index = 0;              // index into HTTP_req buffer
boolean LED_state[4] = {0}; // stores the states of the LEDs

void setup()
{
    // disable Ethernet chip
    pinMode(10, OUTPUT);
    digitalWrite(10, HIGH);
    
    Serial.begin(9600);       // for debugging
    
    // initialize SD card
    Serial.println("Initializing SD card...");
    if (!SD.begin(4)) {
        Serial.println("ERROR - SD card initialization failed!");
        return;    // init failed
    }
    Serial.println("SUCCESS - SD card initialized.");
    // check for index.htm file
    if (!SD.exists("index.htm")) {
        Serial.println("ERROR - Can't find index.htm file!");
        return;  // can't find index file
    }
    Serial.println("SUCCESS - Found index.htm file.");
    // switches on pins 2, 3 and 5
    pinMode(2, INPUT);
    pinMode(3, INPUT);
    pinMode(5, INPUT);
    // LEDs
    pinMode(6, OUTPUT);
    pinMode(7, OUTPUT);
    pinMode(8, OUTPUT);
    pinMode(9, OUTPUT);
    
    Ethernet.begin(mac, ip);  // initialize Ethernet device
    server.begin();           // start to listen for clients
}

void loop()
{
    EthernetClient client = server.available();  // try to get client

    if (client) {  // got client?
        boolean currentLineIsBlank = true;
        while (client.connected()) {
            if (client.available()) {   // client data available to read
                char c = client.read(); // read 1 byte (character) from client
                // limit the size of the stored received HTTP request
                // buffer first part of HTTP request in HTTP_req array (string)
                // leave last element in array as 0 to null terminate string (REQ_BUF_SZ - 1)
                if (req_index < (REQ_BUF_SZ - 1)) {
                    HTTP_req[req_index] = c;          // save HTTP request character
                    req_index++;
                }
                // last line of client request is blank and ends with \n
                // respond to client only after last line received
                if (c == '\n' && currentLineIsBlank) {
                    // send a standard http response header
                    client.println("HTTP/1.1 200 OK");
                    // remainder of header follows below, depending on if
                    // web page or XML page is requested
                    // Ajax request - send XML file
                    if (StrContains(HTTP_req, "ajax_inputs")) {
                        // send rest of HTTP header
                        client.println("Content-Type: text/xml");
                        client.println("Connection: keep-alive");
                        client.println();
                        SetLEDs();
                        // send XML file containing input states
                        XML_response(client);
                    }
                    else {  // web page request
                        // send rest of HTTP header
                        client.println("Content-Type: text/html");
                        client.println("Connection: keep-alive");
                        client.println();
                        // send web page
                        webFile = SD.open("index.htm");        // open web page file
                        if (webFile) {
                            while(webFile.available()) {
                                client.write(webFile.read()); // send web page to client
                            }
                            webFile.close();
                        }
                    }
                    // display received HTTP request on serial port
                    Serial.print(HTTP_req);
                    // reset buffer index and all buffer elements to 0
                    req_index = 0;
                    StrClear(HTTP_req, REQ_BUF_SZ);
                    break;
                }
                // every line of text received from the client ends with \r\n
                if (c == '\n') {
                    // last character on line of received text
                    // starting new line with next character read
                    currentLineIsBlank = true;
                } 
                else if (c != '\r') {
                    // a text character was received from client
                    currentLineIsBlank = false;
                }
            } // end if (client.available())
        } // end while (client.connected())
        delay(1);      // give the web browser time to receive the data
        client.stop(); // close the connection
    } // end if (client)
}

// checks if received HTTP request is switching on/off LEDs
// also saves the state of the LEDs
void SetLEDs(void)
{
    // LED 1 (pin 6)
    if (StrContains(HTTP_req, "LED1=1")) {
        LED_state[0] = 1;  // save LED state
        digitalWrite(6, HIGH);
    }
    else if (StrContains(HTTP_req, "LED1=0")) {
        LED_state[0] = 0;  // save LED state
        digitalWrite(6, LOW);
    }
    // LED 2 (pin 7)
    if (StrContains(HTTP_req, "LED2=1")) {
        LED_state[1] = 1;  // save LED state
        digitalWrite(7, HIGH);
    }
    else if (StrContains(HTTP_req, "LED2=0")) {
        LED_state[1] = 0;  // save LED state
        digitalWrite(7, LOW);
    }
    // LED 3 (pin 8)
    if (StrContains(HTTP_req, "LED3=1")) {
        LED_state[2] = 1;  // save LED state
        digitalWrite(8, HIGH);
    }
    else if (StrContains(HTTP_req, "LED3=0")) {
        LED_state[2] = 0;  // save LED state
        digitalWrite(8, LOW);
    }
    // LED 4 (pin 9)
    if (StrContains(HTTP_req, "LED4=1")) {
        LED_state[3] = 1;  // save LED state
        digitalWrite(9, HIGH);
    }
    else if (StrContains(HTTP_req, "LED4=0")) {
        LED_state[3] = 0;  // save LED state
        digitalWrite(9, LOW);
    }
}

// send the XML file with analog values, switch status
//  and LED status
void XML_response(EthernetClient cl)
{
    int analog_val;            // stores value read from analog inputs
    int count;                 // used by 'for' loops
    int sw_arr[] = {2, 3, 5};  // pins interfaced to switches
    
    cl.print("<?xml version = \"1.0\" ?>");
    cl.print("<inputs>");
    // read analog inputs
    for (count = 2; count <= 5; count++) { // A2 to A5
        analog_val = analogRead(count);
        cl.print("<analog>");
        cl.print(analog_val);
        cl.println("</analog>");
    }
    // read switches
    for (count = 0; count < 3; count++) {
        cl.print("<switch>");
        if (digitalRead(sw_arr[count])) {
            cl.print("ON");
        }
        else {
            cl.print("OFF");
        }
        cl.println("</switch>");
    }
    // checkbox LED states
    // LED1
    cl.print("<LED>");
    if (LED_state[0]) {
        cl.print("checked");
    }
    else {
        cl.print("unchecked");
    }
    cl.println("</LED>");
    // LED2
    cl.print("<LED>");
    if (LED_state[1]) {
        cl.print("checked");
    }
    else {
        cl.print("unchecked");
    }
     cl.println("</LED>");
    // button LED states
    // LED3
    cl.print("<LED>");
    if (LED_state[2]) {
        cl.print("on");
    }
    else {
        cl.print("off");
    }
    cl.println("</LED>");
    // LED4
    cl.print("<LED>");
    if (LED_state[3]) {
        cl.print("on");
    }
    else {
        cl.print("off");
    }
    cl.println("</LED>");
    
    cl.print("</inputs>");
}

// sets every element of str to 0 (clears array)
void StrClear(char *str, char length)
{
    for (int i = 0; i < length; i++) {
        str[i] = 0;
    }
}

// searches for the string sfind in the string str
// returns 1 if string found
// returns 0 if string not found
char StrContains(char *str, char *sfind)
{
    char found = 0;
    char index = 0;
    char len;

    len = strlen(str);
    
    if (strlen(sfind) > len) {
        return 0;
    }
    while (index < len) {
        if (str[index] == sfind[found]) {
            found++;
            if (strlen(sfind) == found) {
                return 1;
            }
        }
        else {
            found = 0;
        }
        index++;
    }

    return 0;
}

and index.htm

<!DOCTYPE html>
<html>
    <head>
        <title>Arduino Ajax I/O</title>
        <script>
		strLED1 = "";
		strLED2 = "";
		strLED3 = "";
		strLED4 = "";
		strLED5 = "";
		strLED6 = "";

		var LED1_state = 0;
		var LED2_state = 0;
		var LED3_state = 0;
		var LED4_state = 0;
		var LED5_state = 0;
		var LED6_state = 0;
		
		function GetArduinoIO()
		{
			nocache = "&nocache=" + Math.random() * 1000000;
			var request = new XMLHttpRequest();
			request.onreadystatechange = function()
			{
				if (this.readyState == 4) {
					if (this.status == 200) {
						if (this.responseXML != null) {
							// XML file received - contains analog values, switch values and LED states
							var count;
							// get analog inputs
							var num_an = this.responseXML.getElementsByTagName('analog').length;
							for (count = 0; count < num_an; count++) {
								document.getElementsByClassName("analog")[count].innerHTML =
									this.responseXML.getElementsByTagName('analog')[count].childNodes[0].nodeValue;
							}
							// get switch inputs
							var num_an = this.responseXML.getElementsByTagName('switch').length;
							for (count = 0; count < num_an; count++) {
								document.getElementsByClassName("switches")[count].innerHTML =
									this.responseXML.getElementsByTagName('switch')[count].childNodes[0].nodeValue;
							}
							// LED 1
							if (this.responseXML.getElementsByTagName('LED')[0].childNodes[0].nodeValue === "on") {
								document.getElementById("LED1").innerHTML = "LED 1 is ON (D31)";
								LED1_state = 1;
							}
							else {
								document.getElementById("LED1").innerHTML = "LED 1 is OFF (D31)";
								LED1_state = 0;
							}
							
							// LED 2
							if (this.responseXML.getElementsByTagName('LED')[1].childNodes[0].nodeValue === "on") {
								document.getElementById("LED2").innerHTML = "LED 2 is ON (D32)";
								LED2_state = 1;
							}
							else {
								document.getElementById("LED2").innerHTML = "LED 2 is OFF (D32)";
								LED2_state = 0;
							}		
							// LED 3
							if (this.responseXML.getElementsByTagName('LED')[2].childNodes[0].nodeValue === "on") {
								document.getElementById("LED3").innerHTML = "LED 3 is ON (D33)";
								LED3_state = 1;
							}
							else {
								document.getElementById("LED3").innerHTML = "LED 3 is OFF (D33)";
								LED3_state = 0;
							}
							// LED 4
							if (this.responseXML.getElementsByTagName('LED')[3].childNodes[0].nodeValue === "on") {
								document.getElementById("LED4").innerHTML = "LED 4 is ON (D34)";
								LED4_state = 1;
							}
							else {
								document.getElementById("LED4").innerHTML = "LED 4 is OFF (D34)";
								LED4_state = 0;
							}
							// LED 5
							if (this.responseXML.getElementsByTagName('LED')[4].childNodes[0].nodeValue === "on") {
								document.getElementById("LED5").innerHTML = "LED 5 is ON (D35)";
								LED1_state = 1;
							}
							else {
								document.getElementById("LED5").innerHTML = "LED 5 is OFF (D35)";
								LED5_state = 0;
							}
							// LED 6
							if (this.responseXML.getElementsByTagName('LED')[5].childNodes[0].nodeValue === "on") {
								document.getElementById("LED6").innerHTML = "LED 6 is ON (D36)";
								LED6_state = 1;
							}
							else {
								document.getElementById("LED6").innerHTML = "LED 6 is OFF (D36)";
								LED6_state = 0;
							}
						}
					}
				}
			}
			// send HTTP GET request with LEDs to switch on/off if any
			request.open("GET", "ajax_inputs" + strLED1 + strLED2 + strLED3 + strLED4 + strLED5 + strLED6 + nocache, true);
			request.send(null);
			setTimeout('GetArduinoIO()', 1000);
			strLED1 = "";
			strLED2 = "";
			strLED3 = "";
			strLED4 = "";
			strLED5 = "";
			strLED6 = "";
			
			
		}
		function GetButton1()
		{
			if (LED1_state === 1) {
				LED1_state = 0;
				strLED1 = "&LED1=0";
			}
			else {
				LED1_state = 1;
				strLED1 = "&LED1=1";
			}
		}
		function GetButton2()
		{
			if (LED2_state === 1) {
				LED2_state = 0;
				strLED2 = "&LED2=0";
			}
			else {
				LED2_state = 1;
				strLED2 = "&LED2=1";
			}
		}
		function GetButton3()
		{
			if (LED3_state === 1) {
				LED3_state = 0;
				strLED3 = "&LED3=0";
			}
			else {
				LED3_state = 1;
				strLED3 = "&LED3=1";
			}
		}
		function GetButton4()
		{
			if (LED4_state === 1) {
				LED4_state = 0;
				strLED4 = "&LED4=0";
			}
			else {
				LED4_state = 1;
				strLED4 = "&LED4=1";
			}
		}
		function GetButton5()
		{
			if (LED5_state === 1) {
				LED5_state = 0;
				strLED5 = "&LED5=0";
			}
			else {
				LED5_state = 1;
				strLED5 = "&LED5=1";
			}
		}
		
		function GetButton6()
		{
			if (LED6_state === 1) {
				LED6_state = 0;
				strLED6 = "&LED6=0";
			}
			else {
				LED6_state = 1;
				strLED6 = "&LED6=1";
			}
		}
	</script>
	<style>
		.IO_box {
			float: left;
			margin: 0 20px 20px 0;
			border: 1px solid blue;
			padding: 0 5px 0 5px;
			width: 120px;
		}
		h1 {
			font-size: 120%;
			color: blue;
			margin: 0 0 10px 0;
		}
		h2 {
			font-size: 85%;
			color: #5734E6;
			margin: 5px 0 5px 0;
		}
		p, form, button {
			font-size: 80%;
			color: #252525;
		}
		.small_text {
			font-size: 70%;
			color: #737373;
		}
	</style>
    </head>
    <body onload="GetArduinoIO()">
        <h1>Arduino Ajax I/O</h1>
        <div class="IO_box">
			<h2>Analog Inputs</h2>
			<p class="small_text">A0 used by Ethernet shield</p>
			<p class="small_text">A1 used by Ethernet shield</p>
			<p>A2: <span class="analog">...</span>A3: <span class="analog">...</span></p>
			<p>A4: <span class="analog">...</span>
			A5: <span class="analog">...</span></p>
            <p>A6: <span class="analog">...</span>
            A7: <span class="analog">...</span></p>
            <p>A8: <span class="analog">...</span>
            A9: <span class="analog">...</span></p>
            <p>A10: <span class="analog">...</span>
            A11: <span class="analog">...</span></p>
            <p>A12: <span class="analog">...</span>
            A13: <span class="analog">...</span></p>
            <p>A14: <span class="analog">...</span>
            A15: <span class="analog">...</span></p>
		</div>
		<div class="IO_box">
			<h2 align="center">Switch Inputs</h2>
			<p align="center">Switch 1 (D43): <span class="switches">...</span></p>
			<p align="center">Switch 2 (D45): <span class="switches">...</span></p>
			<p align="center">Switch 3 (D47): <span class="switches">...</span></p>
            <p align="center">Switch 4 (D49): <span class="switches">...</span></p>
            <p align="center">Switch 5 (D51): <span class="switches">...</span></p>
            <p align="center">Switch 6 (D53): <span class="switches">...</span></p>
            
	</div>
	
<div class="IO_box">
			<h2 align="center">LEDs Using Buttons</h2>
			<div align="center">
			  <button type="button" id="LED1" onclick="GetButton1()">LED 1 is OFF (D31)</button>
			  <button type="button" id="LED2" onclick="GetButton2()">LED 2 is OFF (D32)</button>
			  


			  <button type="button" id="LED3" onclick="GetButton3()">LED 3 is OFF (D33)</button>
			  <button type="button" id="LED4" onclick="GetButton4()">LED 4 is OFF (D34)</button>
			  


			  <button type="button" id="LED5" onclick="GetButton5()">LED 5 is OFF (D35)</button>
			  <button type="button" id="LED6" onclick="GetButton6()">LED 6 is OFF (D36)</button>
			  


  </div>
</div>
        <div class="IO_box">
			<h2 align="center">Remote</h2>
			<div align="center">
			  <button type="button" id="LIGHT1" onclick="GetButton1()">Light1 ON  (D31)</button>
			  <button type="button" id="LIGHT1" onclick="GetButton1()">Light1 OFF (D31)</button>
			  


			  <button type="button" id="LIGHT2" onclick="GetButton2()">Light2 ON  (D32)</button>
			  <button type="button" id="LIGHT2" onclick="GetButton2()">Light2 OFF (D32)</button>
			  


			  <button type="button" id="LIGHT3" onclick="GetButton3()">Light3 ON  (D33)</button>
			  <button type="button" id="LIGHT3" onclick="GetButton3()">Light3 OFF (D33)</button>
			  


		  </div>
    </div>
</body>
</html>