WiFi ESP32 LED Control Project

Control any device using wifi at home

May 1, 2020

•

12786 views

•

3 respects

home automation

remote control

internet of things

Components and supplies

Jumper wires (generic)

USB-A to Mini-USB Cable

ESP32 Wroom

LED (generic)

Solderless Breadboard Half Size

Arduino UNO

Apps and platforms

Arduino IDE

Project description

Code

The code

arduino

Just copy and paste in Arduino IDE

1  /* made by Kusnh13
2  For refrence watch YouTube video:-https://youtu.be/Hgq2KX5w-_o    */
3  
4  #include <WiFi.h>
5  
6  const char* ssid = "user id"; 
7   const char* password = "password"; 
8  
9  WiFiServer server(80);
10  
11   String header;
12  String output26State = "off";
13  String output27State   = "off";
14  
15  const int output26 = 26;
16  const int output27 = 27;
17   
18  void setup() {
19  Serial.begin(115200);
20  pinMode(output26, OUTPUT);
21   digitalWrite(output26, LOW);
22  digitalWrite(output27, LOW);
23  
24  Serial.print("Connecting   to ");
25  Serial.println(ssid);
26  WiFi.begin(ssid, password);
27  while (WiFi.status()   != WL_CONNECTED) {
28  delay(500);
29  Serial.print(".");
30  }
31  Serial.println("");
32   Serial.println("WiFi connected.");
33  Serial.println("IP address: ");
34   Serial.println(WiFi.localIP());
35  server.begin();
36  }
37  
38  void loop(){
39   WiFiClient client = server.available(); 
40  if (client) {      
41  Serial.println("New   Client.");
42  String currentLine = "";       
43  while (client.connected())   {    
44  if (client.available()) {   
45  char c = client.read();  
46  Serial.write(c);           
47  header += c;
48  if (c == '\
49') {     
50  if (currentLine.length()   == 0) {
51  client.println("HTTP/1.1 200 OK");
52  client.println("Content-type:text/html");
53   client.println("Connection: close");
54  client.println();
55  
56  // turns   the GPIOs on and off
57  if (header.indexOf("GET /26/on") >= 0) {
58  Serial.println("GPIO   26 on");
59  output26State = "on";
60  digitalWrite(output26, HIGH);
61  }   else if (header.indexOf("GET /26/off") >= 0) {
62  Serial.println("GPIO 26 off");
63   output26State = "off";
64  digitalWrite(output26, LOW);
65  } else if (header.indexOf("GET   /27/on") >= 0) {
66  Serial.println("GPIO 27 on");
67  output27State = "on";
68   digitalWrite(output27, HIGH);
69  } else if (header.indexOf("GET /27/off")   >= 0) {
70  Serial.println("GPIO 27 off");
71  output27State = "off";
72   digitalWrite(output27, LOW);
73  }
74   client.println("<!DOCTYPE html><html>");
75   client.println("<head><meta name=\\"viewport\\" content=\\"width=device-width,   initial-scale=1\\">");
76  client.println("<style>html { font-family: Helvetica;   display: inline-block; margin: 0px auto; text-align: center;}");
77  client.println(".button   { background-color: #4CAF50; border: none; color: white; padding: 16px 40px;");
78   client.println("text-decoration: none; font-size: 30px; margin: 2px; cursor:   pointer;}");
79  client.println(".button2 {background-color: #555555;}</style></head>");
80   
81  client.println("<body><h1>ESP32 Web Server</h1>");
82  client.println("<p>GPIO   26 - State " + output26State + "</p>");
83client.println();
84  break;
85   } else {   currentLine = "";  }
86  } else if (c != '\
') {   currentLine   += c;   }
87  }
88  
89  }
90  header = "";
91  client.stop();
92  Serial.println("Client   disconnected.");
93  Serial.println("");
94  }
95  }

  /* made by Kusnh13
  For refrence watch YouTube video:-https://youtu.be/Hgq2KX5w-_o    */
  
  #include <WiFi.h>
  
  const char* ssid = "user id"; 
   const char* password = "password"; 
  
  WiFiServer server(80);
  
   String header;
  String output26State = "off";
  String output27State   = "off";
  
  const int output26 = 26;
  const int output27 = 27;
   
  void setup() {
  Serial.begin(115200);
  pinMode(output26, OUTPUT);
   digitalWrite(output26, LOW);
  digitalWrite(output27, LOW);
  
  Serial.print("Connecting   to ");
  Serial.println(ssid);
  WiFi.begin(ssid, password);
  while (WiFi.status()   != WL_CONNECTED) {
  delay(500);
  Serial.print(".");
  }
  Serial.println("");
   Serial.println("WiFi connected.");
  Serial.println("IP address: ");
   Serial.println(WiFi.localIP());
  server.begin();
  }
  
  void loop(){
   WiFiClient client = server.available(); 
  if (client) {      
  Serial.println("New   Client.");
  String currentLine = "";       
  while (client.connected())   {    
  if (client.available()) {   
  char c = client.read();  
  Serial.write(c);           
  header += c;
  if (c == '\
') {     
  if (currentLine.length()   == 0) {
  client.println("HTTP/1.1 200 OK");
  client.println("Content-type:text/html");
   client.println("Connection: close");
  client.println();
  
  // turns   the GPIOs on and off
  if (header.indexOf("GET /26/on") >= 0) {
  Serial.println("GPIO   26 on");
  output26State = "on";
  digitalWrite(output26, HIGH);
  }   else if (header.indexOf("GET /26/off") >= 0) {
  Serial.println("GPIO 26 off");
   output26State = "off";
  digitalWrite(output26, LOW);
  } else if (header.indexOf("GET   /27/on") >= 0) {
  Serial.println("GPIO 27 on");
  output27State = "on";
   digitalWrite(output27, HIGH);
  } else if (header.indexOf("GET /27/off")   >= 0) {
  Serial.println("GPIO 27 off");
  output27State = "off";
   digitalWrite(output27, LOW);
  }
   client.println("<!DOCTYPE html><html>");
   client.println("<head><meta name=\\"viewport\\" content=\\"width=device-width,   initial-scale=1\\">");
  client.println("<style>html { font-family: Helvetica;   display: inline-block; margin: 0px auto; text-align: center;}");
  client.println(".button   { background-color: #4CAF50; border: none; color: white; padding: 16px 40px;");
   client.println("text-decoration: none; font-size: 30px; margin: 2px; cursor:   pointer;}");
  client.println(".button2 {background-color: #555555;}</style></head>");
   
  client.println("<body><h1>ESP32 Web Server</h1>");
  client.println("<p>GPIO   26 - State " + output26State + "</p>");
client.println();
  break;
   } else {   currentLine = "";  }
  } else if (c != '\
') {   currentLine   += c;   }
  }
  
  }
  header = "";
  client.stop();
  Serial.println("Client   disconnected.");
  Serial.println("");
  }
  }

the code

arduino

1/*********
2made by Kusnh13
3For refrence watch YouTube video:-https://youtu.be/Hgq2KX5w-_o
4*********/
5
6//   Load Wi-Fi library
7
8
9#include <WiFi.h>
10
11// Replace with your network   credentials
12const char* ssid = "CG4-1102"; 
13const char* password = "py79iq0h";   
14
15// Set web server port number to 80
16WiFiServer server(80);
17
18//   Variable to store the HTTP request
19String header;
20
21// Auxiliar variables   to store the current output state
22String output26State = "off";
23String output27State   = "off";
24
25// Assign output variables to GPIO pins
26const int output26   = 26;
27const int output27 = 27;
28
29void setup() {
30  Serial.begin(115200);
31   // Initialize the output variables as outputs
32  pinMode(output26, OUTPUT);
33   pinMode(output27, OUTPUT);
34  // Set outputs to LOW
35  digitalWrite(output26,   LOW);
36  digitalWrite(output27, LOW);
37
38  // Connect to Wi-Fi network with   SSID and password
39  Serial.print("Connecting to ");
40  Serial.println(ssid);
41   WiFi.begin(ssid, password);
42  while (WiFi.status() != WL_CONNECTED) {
43    delay(500);
44     Serial.print(".");
45  }
46  // Print local IP address and start web server
47   Serial.println("");
48  Serial.println("WiFi connected.");
49  Serial.println("IP   address: ");
50  Serial.println(WiFi.localIP());
51  server.begin();
52}
53
54void   loop(){
55  WiFiClient client = server.available();   // Listen for incoming clients
56
57   if (client) {                             // If a new client connects,
58    Serial.println("New   Client.");          // print a message out in the serial port
59    String currentLine   = "";                // make a String to hold incoming data from the client
60     while (client.connected()) {            // loop while the client's connected
61       if (client.available()) {             // if there's bytes to read from the   26 - State " + output26State + "</p>");
62            // If the output26State   is off, it displays the ON button       
63            if (output26State=="off")   {
64              client.println("<p><a href=\\"/26/on\\"><button class=\\"button\\">ON</button></a></p>");
65             } else {
66              client.println("<p><a href=\\"/26/off\\"><button   class=\\"button button2\\">OFF</button></a></p>");
67            } 
68               
69             // Display current state, and ON/OFF buttons for GPIO 27  
70            client.println("<p>GPIO   27 - State " + output27State + "</p>");
71            // If the output27State   is off, it displays the ON button       
72            if (output27State=="off")   {
73              client.println("<p><a href=\\"/27/on\\"><button class=\\"button\\">ON</button></a></p>");
74             } else {
75              client.println("<p><a href=\\"/27/off\\"><button   class=\\"button button2\\">OFF</button></a></p>");
76            }
77            client.println("</body></html>");
78             
79            // The HTTP response ends with another blank line
80             client.println();
81            // Break out of the while loop
82             break;
83          } else { // if you got a newline, then clear currentLine
84             currentLine = "";
85          }
86        } else if (c != '\
')   {  // if you got anything else but a carriage return character,
87          currentLine   += c;      // add it to the end of the currentLine
88        }
89      }
90    }
91     // Clear the header variable
92    header = "";
93    // Close the connection
94     client.stop();
95    Serial.println("Client disconnected.");
96    Serial.println("");
97   }
98}

/*********
made by Kusnh13
For refrence watch YouTube video:-https://youtu.be/Hgq2KX5w-_o
*********/

//   Load Wi-Fi library


#include <WiFi.h>

// Replace with your network   credentials
const char* ssid = "CG4-1102"; 
const char* password = "py79iq0h";   

// Set web server port number to 80
WiFiServer server(80);

//   Variable to store the HTTP request
String header;

// Auxiliar variables   to store the current output state
String output26State = "off";
String output27State   = "off";

// Assign output variables to GPIO pins
const int output26   = 26;
const int output27 = 27;

void setup() {
  Serial.begin(115200);
   // Initialize the output variables as outputs
  pinMode(output26, OUTPUT);
   pinMode(output27, OUTPUT);
  // Set outputs to LOW
  digitalWrite(output26,   LOW);
  digitalWrite(output27, LOW);

  // Connect to Wi-Fi network with   SSID and password
  Serial.print("Connecting to ");
  Serial.println(ssid);
   WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
     Serial.print(".");
  }
  // Print local IP address and start web server
   Serial.println("");
  Serial.println("WiFi connected.");
  Serial.println("IP   address: ");
  Serial.println(WiFi.localIP());
  server.begin();
}

void   loop(){
  WiFiClient client = server.available();   // Listen for incoming clients

   if (client) {                             // If a new client connects,
    Serial.println("New   Client.");          // print a message out in the serial port
    String currentLine   = "";                // make a String to hold incoming data from the client
     while (client.connected()) {            // loop while the client's connected
       if (client.available()) {             // if there's bytes to read from the   26 - State " + output26State + "</p>");
            // If the output26State   is off, it displays the ON button       
            if (output26State=="off")   {
              client.println("<p><a href=\\"/26/on\\"><button class=\\"button\\">ON</button></a></p>");
             } else {
              client.println("<p><a href=\\"/26/off\\"><button   class=\\"button button2\\">OFF</button></a></p>");
            } 
               
             // Display current state, and ON/OFF buttons for GPIO 27  
            client.println("<p>GPIO   27 - State " + output27State + "</p>");
            // If the output27State   is off, it displays the ON button       
            if (output27State=="off")   {
              client.println("<p><a href=\\"/27/on\\"><button class=\\"button\\">ON</button></a></p>");
             } else {
              client.println("<p><a href=\\"/27/off\\"><button   class=\\"button button2\\">OFF</button></a></p>");
            }
            client.println("</body></html>");
             
            // The HTTP response ends with another blank line
             client.println();
            // Break out of the while loop
             break;
          } else { // if you got a newline, then clear currentLine
             currentLine = "";
          }
        } else if (c != '\
')   {  // if you got anything else but a carriage return character,
          currentLine   += c;      // add it to the end of the currentLine
        }
      }
    }
     // Clear the header variable
    header = "";
    // Close the connection
     client.stop();
    Serial.println("Client disconnected.");
    Serial.println("");
   }
}

untitled

arduino

1  /* made by Kusnh13
2  For refrence watch YouTube video:-https://youtu.be/Hgq2KX5w-_o    */
3  
4  #include <WiFi.h>
5  
6  const char* ssid = "user id"; 
7   const char* password = "password"; 
8  
9  WiFiServer server(80);
10  
11   String header;
12  String output26State = "off";
13  String output27State   = "off";
14  
15  const int output26 = 26;
16  const int output27 = 27;
17   
18  void setup() {
19  Serial.begin(115200);
20  pinMode(output26, OUTPUT);
21   digitalWrite(output26, LOW);
22  digitalWrite(output27, LOW);
23  
24  Serial.print("Connecting   to ");
25  Serial.println(ssid);
26  WiFi.begin(ssid, password);
27  while (WiFi.status()   != WL_CONNECTED) {
28  delay(500);
29  Serial.print(".");
30  }
31  Serial.println("");
32   Serial.println("WiFi connected.");
33  Serial.println("IP address: ");
34   Serial.println(WiFi.localIP());
35  server.begin();
36  }
37  
38  void loop(){
39   WiFiClient client = server.available(); 
40  if (client) {      
41  Serial.println("New   Client.");
42  String currentLine = "";       
43  while (client.connected())   {    
44  if (client.available()) {   
45  char c = client.read();  
46  Serial.write(c);           
47  header += c;
48  if (c == '\
49') {     
50  if (currentLine.length()   == 0) {
51  client.println("HTTP/1.1 200 OK");
52  client.println("Content-type:text/html");
53   client.println("Connection: close");
54  client.println();
55  
56  // turns   the GPIOs on and off
57  if (header.indexOf("GET /26/on") >= 0) {
58  Serial.println("GPIO   26 on");
59  output26State = "on";
60  digitalWrite(output26, HIGH);
61  }   else if (header.indexOf("GET /26/off") >= 0) {
62  Serial.println("GPIO 26 off");
63   output26State = "off";
64  digitalWrite(output26, LOW);
65  } else if (header.indexOf("GET   /27/on") >= 0) {
66  Serial.println("GPIO 27 on");
67  output27State = "on";
68   digitalWrite(output27, HIGH);
69  } else if (header.indexOf("GET /27/off")   >= 0) {
70  Serial.println("GPIO 27 off");
71  output27State = "off";
72   digitalWrite(output27, LOW);
73  }
74   client.println("<!DOCTYPE html><html>");
75   client.println("<head><meta name=\\"viewport\\" content=\\"width=device-width,   initial-scale=1\\">");
76  client.println("<style>html { font-family: Helvetica;   display: inline-block; margin: 0px auto; text-align: center;}");
77  client.println(".button   { background-color: #4CAF50; border: none; color: white; padding: 16px 40px;");
78   client.println("text-decoration: none; font-size: 30px; margin: 2px; cursor:   pointer;}");
79  client.println(".button2 {background-color: #555555;}</style></head>");
80   
81  client.println("<body><h1>ESP32 Web Server</h1>");
82  client.println("<p>GPIO   26 - State " + output26State + "</p>");
83  
84  
85  
86  
87 
88  
89   client.println();
90  break;
91  } else {   currentLine = "";  }
92  } else   if (c != '\
') {   currentLine += c;   }
93  }
94  
95  }
96  header = "";
97   client.stop();
98  Serial.println("Client disconnected.");
99  Serial.println("");
100   }
101  }

  /* made by Kusnh13
  For refrence watch YouTube video:-https://youtu.be/Hgq2KX5w-_o    */
  
  #include <WiFi.h>
  
  const char* ssid = "user id"; 
   const char* password = "password"; 
  
  WiFiServer server(80);
  
   String header;
  String output26State = "off";
  String output27State   = "off";
  
  const int output26 = 26;
  const int output27 = 27;
   
  void setup() {
  Serial.begin(115200);
  pinMode(output26, OUTPUT);
   digitalWrite(output26, LOW);
  digitalWrite(output27, LOW);
  
  Serial.print("Connecting   to ");
  Serial.println(ssid);
  WiFi.begin(ssid, password);
  while (WiFi.status()   != WL_CONNECTED) {
  delay(500);
  Serial.print(".");
  }
  Serial.println("");
   Serial.println("WiFi connected.");
  Serial.println("IP address: ");
   Serial.println(WiFi.localIP());
  server.begin();
  }
  
  void loop(){
   WiFiClient client = server.available(); 
  if (client) {      
  Serial.println("New   Client.");
  String currentLine = "";       
  while (client.connected())   {    
  if (client.available()) {   
  char c = client.read();  
  Serial.write(c);           
  header += c;
  if (c == '\
') {     
  if (currentLine.length()   == 0) {
  client.println("HTTP/1.1 200 OK");
  client.println("Content-type:text/html");
   client.println("Connection: close");
  client.println();
  
  // turns   the GPIOs on and off
  if (header.indexOf("GET /26/on") >= 0) {
  Serial.println("GPIO   26 on");
  output26State = "on";
  digitalWrite(output26, HIGH);
  }   else if (header.indexOf("GET /26/off") >= 0) {
  Serial.println("GPIO 26 off");
   output26State = "off";
  digitalWrite(output26, LOW);
  } else if (header.indexOf("GET   /27/on") >= 0) {
  Serial.println("GPIO 27 on");
  output27State = "on";
   digitalWrite(output27, HIGH);
  } else if (header.indexOf("GET /27/off")   >= 0) {
  Serial.println("GPIO 27 off");
  output27State = "off";
   digitalWrite(output27, LOW);
  }
   client.println("<!DOCTYPE html><html>");
   client.println("<head><meta name=\\"viewport\\" content=\\"width=device-width,   initial-scale=1\\">");
  client.println("<style>html { font-family: Helvetica;   display: inline-block; margin: 0px auto; text-align: center;}");
  client.println(".button   { background-color: #4CAF50; border: none; color: white; padding: 16px 40px;");
   client.println("text-decoration: none; font-size: 30px; margin: 2px; cursor:   pointer;}");
  client.println(".button2 {background-color: #555555;}</style></head>");
   
  client.println("<body><h1>ESP32 Web Server</h1>");
  client.println("<p>GPIO   26 - State " + output26State + "</p>");
  
  
  
  
 
  
   client.println();
  break;
  } else {   currentLine = "";  }
  } else   if (c != '\
') {   currentLine += c;   }
  }
  
  }
  header = "";
   client.stop();
  Serial.println("Client disconnected.");
  Serial.println("");
   }
  }

untitled

arduino

1  /* made by Kusnh13
2  For refrence watch YouTube video:-https://youtu.be/Hgq2KX5w-_o   */
3  
4  #include <WiFi.h>
5  
6  const char* ssid = "user id"; 
7  const char* password = "password"; 
8  
9  WiFiServer server(80);
10  
11  String header;
12  String output26State = "off";
13  String output27State  = "off";
14  
15  const int output26 = 26;
16  const int output27 = 27;
17  
18  void setup() {
19  Serial.begin(115200);
20  pinMode(output26, OUTPUT);
21  digitalWrite(output26, LOW);
22  digitalWrite(output27, LOW);
23  
24  Serial.print("Connecting  to ");
25  Serial.println(ssid);
26  WiFi.begin(ssid, password);
27  while (WiFi.status()  != WL_CONNECTED) {
28  delay(500);
29  Serial.print(".");
30  }
31  Serial.println("");
32  Serial.println("WiFi connected.");
33  Serial.println("IP address: ");
34  Serial.println(WiFi.localIP());
35  server.begin();
36  }
37  
38  void loop(){
39  WiFiClient client = server.available(); 
40  if (client) {      
41  Serial.println("New  Client.");
42  String currentLine = "";       
43  while (client.connected())  {    
44  if (client.available()) {   
45  char c = client.read();  
46  Serial.write(c);          
47  header += c;
48  if (c == '\n') {     
49  if (currentLine.length()  == 0) {
50  client.println("HTTP/1.1 200 OK");
51  client.println("Content-type:text/html");
52  client.println("Connection: close");
53  client.println();
54  
55  // turns  the GPIOs on and off
56  if (header.indexOf("GET /26/on") >= 0) {
57  Serial.println("GPIO  26 on");
58  output26State = "on";
59  digitalWrite(output26, HIGH);
60  }  else if (header.indexOf("GET /26/off") >= 0) {
61  Serial.println("GPIO 26 off");
62  output26State = "off";
63  digitalWrite(output26, LOW);
64  } else if (header.indexOf("GET  /27/on") >= 0) {
65  Serial.println("GPIO 27 on");
66  output27State = "on";
67  digitalWrite(output27, HIGH);
68  } else if (header.indexOf("GET /27/off")  >= 0) {
69  Serial.println("GPIO 27 off");
70  output27State = "off";
71  digitalWrite(output27, LOW);
72  }
73   client.println("<!DOCTYPE html><html>");
74  client.println("<head><meta name=\\"viewport\\" content=\\"width=device-width,  initial-scale=1\\">");
75  client.println("<style>html { font-family: Helvetica;  display: inline-block; margin: 0px auto; text-align: center;}");
76  client.println(".button  { background-color: #4CAF50; border: none; color: white; padding: 16px 40px;");
77  client.println("text-decoration: none; font-size: 30px; margin: 2px; cursor:  pointer;}");
78  client.println(".button2 {background-color: #555555;}</style></head>");
79  
80  client.println("<body><h1>ESP32 Web Server</h1>");
81  client.println("<p>GPIO  26 - State " + output26State + "</p>");
82  
83  
84  
85  
86 
87  
88  client.println();
89  break;
90  } else {   currentLine = "";  }
91  } else  if (c != '\r') {   currentLine += c;   }
92  }
93  
94  }
95  header = "";
96  client.stop();
97  Serial.println("Client disconnected.");
98  Serial.println("");
99  }
100  }

  /* made by Kusnh13
  For refrence watch YouTube video:-https://youtu.be/Hgq2KX5w-_o   */
  
  #include <WiFi.h>
  
  const char* ssid = "user id"; 
  const char* password = "password"; 
  
  WiFiServer server(80);
  
  String header;
  String output26State = "off";
  String output27State  = "off";
  
  const int output26 = 26;
  const int output27 = 27;
  
  void setup() {
  Serial.begin(115200);
  pinMode(output26, OUTPUT);
  digitalWrite(output26, LOW);
  digitalWrite(output27, LOW);
  
  Serial.print("Connecting  to ");
  Serial.println(ssid);
  WiFi.begin(ssid, password);
  while (WiFi.status()  != WL_CONNECTED) {
  delay(500);
  Serial.print(".");
  }
  Serial.println("");
  Serial.println("WiFi connected.");
  Serial.println("IP address: ");
  Serial.println(WiFi.localIP());
  server.begin();
  }
  
  void loop(){
  WiFiClient client = server.available(); 
  if (client) {      
  Serial.println("New  Client.");
  String currentLine = "";       
  while (client.connected())  {    
  if (client.available()) {   
  char c = client.read();  
  Serial.write(c);          
  header += c;
  if (c == '\n') {     
  if (currentLine.length()  == 0) {
  client.println("HTTP/1.1 200 OK");
  client.println("Content-type:text/html");
  client.println("Connection: close");
  client.println();
  
  // turns  the GPIOs on and off
  if (header.indexOf("GET /26/on") >= 0) {
  Serial.println("GPIO  26 on");
  output26State = "on";
  digitalWrite(output26, HIGH);
  }  else if (header.indexOf("GET /26/off") >= 0) {
  Serial.println("GPIO 26 off");
  output26State = "off";
  digitalWrite(output26, LOW);
  } else if (header.indexOf("GET  /27/on") >= 0) {
  Serial.println("GPIO 27 on");
  output27State = "on";
  digitalWrite(output27, HIGH);
  } else if (header.indexOf("GET /27/off")  >= 0) {
  Serial.println("GPIO 27 off");
  output27State = "off";
  digitalWrite(output27, LOW);
  }
   client.println("<!DOCTYPE html><html>");
  client.println("<head><meta name=\\"viewport\\" content=\\"width=device-width,  initial-scale=1\\">");
  client.println("<style>html { font-family: Helvetica;  display: inline-block; margin: 0px auto; text-align: center;}");
  client.println(".button  { background-color: #4CAF50; border: none; color: white; padding: 16px 40px;");
  client.println("text-decoration: none; font-size: 30px; margin: 2px; cursor:  pointer;}");
  client.println(".button2 {background-color: #555555;}</style></head>");
  
  client.println("<body><h1>ESP32 Web Server</h1>");
  client.println("<p>GPIO  26 - State " + output26State + "</p>");
  
  
  
  
 
  
  client.println();
  break;
  } else {   currentLine = "";  }
  } else  if (c != '\r') {   currentLine += c;   }
  }
  
  }
  header = "";
  client.stop();
  Serial.println("Client disconnected.");
  Serial.println("");
  }
  }

The code

arduino

Just copy and paste in Arduino IDE

1  /* made by Kusnh13
2  For refrence watch YouTube video:-https://youtu.be/Hgq2KX5w-_o   */
3  
4  #include <WiFi.h>
5  
6  const char* ssid = "user id"; 
7  const char* password = "password"; 
8  
9  WiFiServer server(80);
10  
11  String header;
12  String output26State = "off";
13  String output27State  = "off";
14  
15  const int output26 = 26;
16  const int output27 = 27;
17  
18  void setup() {
19  Serial.begin(115200);
20  pinMode(output26, OUTPUT);
21  digitalWrite(output26, LOW);
22  digitalWrite(output27, LOW);
23  
24  Serial.print("Connecting  to ");
25  Serial.println(ssid);
26  WiFi.begin(ssid, password);
27  while (WiFi.status()  != WL_CONNECTED) {
28  delay(500);
29  Serial.print(".");
30  }
31  Serial.println("");
32  Serial.println("WiFi connected.");
33  Serial.println("IP address: ");
34  Serial.println(WiFi.localIP());
35  server.begin();
36  }
37  
38  void loop(){
39  WiFiClient client = server.available(); 
40  if (client) {      
41  Serial.println("New  Client.");
42  String currentLine = "";       
43  while (client.connected())  {    
44  if (client.available()) {   
45  char c = client.read();  
46  Serial.write(c);          
47  header += c;
48  if (c == '\n') {     
49  if (currentLine.length()  == 0) {
50  client.println("HTTP/1.1 200 OK");
51  client.println("Content-type:text/html");
52  client.println("Connection: close");
53  client.println();
54  
55  // turns  the GPIOs on and off
56  if (header.indexOf("GET /26/on") >= 0) {
57  Serial.println("GPIO  26 on");
58  output26State = "on";
59  digitalWrite(output26, HIGH);
60  }  else if (header.indexOf("GET /26/off") >= 0) {
61  Serial.println("GPIO 26 off");
62  output26State = "off";
63  digitalWrite(output26, LOW);
64  } else if (header.indexOf("GET  /27/on") >= 0) {
65  Serial.println("GPIO 27 on");
66  output27State = "on";
67  digitalWrite(output27, HIGH);
68  } else if (header.indexOf("GET /27/off")  >= 0) {
69  Serial.println("GPIO 27 off");
70  output27State = "off";
71  digitalWrite(output27, LOW);
72  }
73   client.println("<!DOCTYPE html><html>");
74  client.println("<head><meta name=\\"viewport\\" content=\\"width=device-width,  initial-scale=1\\">");
75  client.println("<style>html { font-family: Helvetica;  display: inline-block; margin: 0px auto; text-align: center;}");
76  client.println(".button  { background-color: #4CAF50; border: none; color: white; padding: 16px 40px;");
77  client.println("text-decoration: none; font-size: 30px; margin: 2px; cursor:  pointer;}");
78  client.println(".button2 {background-color: #555555;}</style></head>");
79  
80  client.println("<body><h1>ESP32 Web Server</h1>");
81  client.println("<p>GPIO  26 - State " + output26State + "</p>");
82client.println();
83  break;
84  } else {   currentLine = "";  }
85  } else if (c != '\r') {   currentLine  += c;   }
86  }
87  
88  }
89  header = "";
90  client.stop();
91  Serial.println("Client  disconnected.");
92  Serial.println("");
93  }
94  }

  /* made by Kusnh13
  For refrence watch YouTube video:-https://youtu.be/Hgq2KX5w-_o   */
  
  #include <WiFi.h>
  
  const char* ssid = "user id"; 
  const char* password = "password"; 
  
  WiFiServer server(80);
  
  String header;
  String output26State = "off";
  String output27State  = "off";
  
  const int output26 = 26;
  const int output27 = 27;
  
  void setup() {
  Serial.begin(115200);
  pinMode(output26, OUTPUT);
  digitalWrite(output26, LOW);
  digitalWrite(output27, LOW);
  
  Serial.print("Connecting  to ");
  Serial.println(ssid);
  WiFi.begin(ssid, password);
  while (WiFi.status()  != WL_CONNECTED) {
  delay(500);
  Serial.print(".");
  }
  Serial.println("");
  Serial.println("WiFi connected.");
  Serial.println("IP address: ");
  Serial.println(WiFi.localIP());
  server.begin();
  }
  
  void loop(){
  WiFiClient client = server.available(); 
  if (client) {      
  Serial.println("New  Client.");
  String currentLine = "";       
  while (client.connected())  {    
  if (client.available()) {   
  char c = client.read();  
  Serial.write(c);          
  header += c;
  if (c == '\n') {     
  if (currentLine.length()  == 0) {
  client.println("HTTP/1.1 200 OK");
  client.println("Content-type:text/html");
  client.println("Connection: close");
  client.println();
  
  // turns  the GPIOs on and off
  if (header.indexOf("GET /26/on") >= 0) {
  Serial.println("GPIO  26 on");
  output26State = "on";
  digitalWrite(output26, HIGH);
  }  else if (header.indexOf("GET /26/off") >= 0) {
  Serial.println("GPIO 26 off");
  output26State = "off";
  digitalWrite(output26, LOW);
  } else if (header.indexOf("GET  /27/on") >= 0) {
  Serial.println("GPIO 27 on");
  output27State = "on";
  digitalWrite(output27, HIGH);
  } else if (header.indexOf("GET /27/off")  >= 0) {
  Serial.println("GPIO 27 off");
  output27State = "off";
  digitalWrite(output27, LOW);
  }
   client.println("<!DOCTYPE html><html>");
  client.println("<head><meta name=\\"viewport\\" content=\\"width=device-width,  initial-scale=1\\">");
  client.println("<style>html { font-family: Helvetica;  display: inline-block; margin: 0px auto; text-align: center;}");
  client.println(".button  { background-color: #4CAF50; border: none; color: white; padding: 16px 40px;");
  client.println("text-decoration: none; font-size: 30px; margin: 2px; cursor:  pointer;}");
  client.println(".button2 {background-color: #555555;}</style></head>");
  
  client.println("<body><h1>ESP32 Web Server</h1>");
  client.println("<p>GPIO  26 - State " + output26State + "</p>");
client.println();
  break;
  } else {   currentLine = "";  }
  } else if (c != '\r') {   currentLine  += c;   }
  }
  
  }
  header = "";
  client.stop();
  Serial.println("Client  disconnected.");
  Serial.println("");
  }
  }

the code

arduino

1/*********
2made by Kusnh13
3For refrence watch YouTube video:-https://youtu.be/Hgq2KX5w-_o
4*********/
5
6//  Load Wi-Fi library
7
8
9#include <WiFi.h>
10
11// Replace with your network  credentials
12const char* ssid = "CG4-1102"; 
13const char* password = "py79iq0h";  
14
15// Set web server port number to 80
16WiFiServer server(80);
17
18//  Variable to store the HTTP request
19String header;
20
21// Auxiliar variables  to store the current output state
22String output26State = "off";
23String output27State  = "off";
24
25// Assign output variables to GPIO pins
26const int output26  = 26;
27const int output27 = 27;
28
29void setup() {
30  Serial.begin(115200);
31  // Initialize the output variables as outputs
32  pinMode(output26, OUTPUT);
33  pinMode(output27, OUTPUT);
34  // Set outputs to LOW
35  digitalWrite(output26,  LOW);
36  digitalWrite(output27, LOW);
37
38  // Connect to Wi-Fi network with  SSID and password
39  Serial.print("Connecting to ");
40  Serial.println(ssid);
41  WiFi.begin(ssid, password);
42  while (WiFi.status() != WL_CONNECTED) {
43    delay(500);
44    Serial.print(".");
45  }
46  // Print local IP address and start web server
47  Serial.println("");
48  Serial.println("WiFi connected.");
49  Serial.println("IP  address: ");
50  Serial.println(WiFi.localIP());
51  server.begin();
52}
53
54void  loop(){
55  WiFiClient client = server.available();   // Listen for incoming clients
56
57  if (client) {                             // If a new client connects,
58    Serial.println("New  Client.");          // print a message out in the serial port
59    String currentLine  = "";                // make a String to hold incoming data from the client
60    while (client.connected()) {            // loop while the client's connected
61      if (client.available()) {             // if there's bytes to read from the  26 - State " + output26State + "</p>");
62            // If the output26State  is off, it displays the ON button       
63            if (output26State=="off")  {
64              client.println("<p><a href=\\"/26/on\\"><button class=\\"button\\">ON</button></a></p>");
65            } else {
66              client.println("<p><a href=\\"/26/off\\"><button  class=\\"button button2\\">OFF</button></a></p>");
67            } 
68               
69            // Display current state, and ON/OFF buttons for GPIO 27  
70            client.println("<p>GPIO  27 - State " + output27State + "</p>");
71            // If the output27State  is off, it displays the ON button       
72            if (output27State=="off")  {
73              client.println("<p><a href=\\"/27/on\\"><button class=\\"button\\">ON</button></a></p>");
74            } else {
75              client.println("<p><a href=\\"/27/off\\"><button  class=\\"button button2\\">OFF</button></a></p>");
76            }
77            client.println("</body></html>");
78            
79            // The HTTP response ends with another blank line
80            client.println();
81            // Break out of the while loop
82            break;
83          } else { // if you got a newline, then clear currentLine
84            currentLine = "";
85          }
86        } else if (c != '\r')  {  // if you got anything else but a carriage return character,
87          currentLine  += c;      // add it to the end of the currentLine
88        }
89      }
90    }
91    // Clear the header variable
92    header = "";
93    // Close the connection
94    client.stop();
95    Serial.println("Client disconnected.");
96    Serial.println("");
97  }
98}

/*********
made by Kusnh13
For refrence watch YouTube video:-https://youtu.be/Hgq2KX5w-_o
*********/

//  Load Wi-Fi library


#include <WiFi.h>

// Replace with your network  credentials
const char* ssid = "CG4-1102"; 
const char* password = "py79iq0h";  

// Set web server port number to 80
WiFiServer server(80);

//  Variable to store the HTTP request
String header;

// Auxiliar variables  to store the current output state
String output26State = "off";
String output27State  = "off";

// Assign output variables to GPIO pins
const int output26  = 26;
const int output27 = 27;

void setup() {
  Serial.begin(115200);
  // Initialize the output variables as outputs
  pinMode(output26, OUTPUT);
  pinMode(output27, OUTPUT);
  // Set outputs to LOW
  digitalWrite(output26,  LOW);
  digitalWrite(output27, LOW);

  // Connect to Wi-Fi network with  SSID and password
  Serial.print("Connecting to ");
  Serial.println(ssid);
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  // Print local IP address and start web server
  Serial.println("");
  Serial.println("WiFi connected.");
  Serial.println("IP  address: ");
  Serial.println(WiFi.localIP());
  server.begin();
}

void  loop(){
  WiFiClient client = server.available();   // Listen for incoming clients

  if (client) {                             // If a new client connects,
    Serial.println("New  Client.");          // print a message out in the serial port
    String currentLine  = "";                // make a String to hold incoming data from the client
    while (client.connected()) {            // loop while the client's connected
      if (client.available()) {             // if there's bytes to read from the  26 - State " + output26State + "</p>");
            // If the output26State  is off, it displays the ON button       
            if (output26State=="off")  {
              client.println("<p><a href=\\"/26/on\\"><button class=\\"button\\">ON</button></a></p>");
            } else {
              client.println("<p><a href=\\"/26/off\\"><button  class=\\"button button2\\">OFF</button></a></p>");
            } 
               
            // Display current state, and ON/OFF buttons for GPIO 27  
            client.println("<p>GPIO  27 - State " + output27State + "</p>");
            // If the output27State  is off, it displays the ON button       
            if (output27State=="off")  {
              client.println("<p><a href=\\"/27/on\\"><button class=\\"button\\">ON</button></a></p>");
            } else {
              client.println("<p><a href=\\"/27/off\\"><button  class=\\"button button2\\">OFF</button></a></p>");
            }
            client.println("</body></html>");
            
            // The HTTP response ends with another blank line
            client.println();
            // Break out of the while loop
            break;
          } else { // if you got a newline, then clear currentLine
            currentLine = "";
          }
        } else if (c != '\r')  {  // if you got anything else but a carriage return character,
          currentLine  += c;      // add it to the end of the currentLine
        }
      }
    }
    // Clear the header variable
    header = "";
    // Close the connection
    client.stop();
    Serial.println("Client disconnected.");
    Serial.println("");
  }
}

The Code

arduino

Just upload it

1  /* made by Kusnh13
2  For refrence watch YouTube video:-https://youtu.be/Hgq2KX5w-_o   */
3  
4  #include <WiFi.h>
5  
6  const char* ssid = "user id"; 
7  const char* password = "password"; 
8  
9  WiFiServer server(80);
10  
11  String header;
12  String output26State = "off";
13  String output27State  = "off";
14  
15  const int output26 = 26;
16  const int output27 = 27;
17  
18  void setup() {
19  Serial.begin(115200);
20  pinMode(output26, OUTPUT);
21  digitalWrite(output26, LOW);
22  digitalWrite(output27, LOW);
23  
24  Serial.print("Connecting  to ");
25  Serial.println(ssid);
26  WiFi.begin(ssid, password);
27  while (WiFi.status()  != WL_CONNECTED) {
28  delay(500);
29  Serial.print(".");
30  }
31  Serial.println("");
32  Serial.println("WiFi connected.");
33  Serial.println("IP address: ");
34  Serial.println(WiFi.localIP());
35  server.begin();
36  }
37  
38  void loop(){
39  WiFiClient client = server.available(); 
40  if (client) {      
41  Serial.println("New  Client.");
42  String currentLine = "";       
43  while (client.connected())  {    
44  if (client.available()) {   
45  char c = client.read();  
46  Serial.write(c);          
47  header += c;
48  if (c == '\n') {     
49  if (currentLine.length()  == 0) {
50  client.println("HTTP/1.1 200 OK");
51  client.println("Content-type:text/html");
52  client.println("Connection: close");
53  client.println();
54  
55  // turns  the GPIOs on and off
56  if (header.indexOf("GET /26/on") >= 0) {
57  Serial.println("GPIO  26 on");
58  output26State = "on";
59  digitalWrite(output26, HIGH);
60  }  else if (header.indexOf("GET /26/off") >= 0) {
61  Serial.println("GPIO 26 off");
62  output26State = "off";
63  digitalWrite(output26, LOW);
64  } else if (header.indexOf("GET  /27/on") >= 0) {
65  Serial.println("GPIO 27 on");
66  output27State = "on";
67  digitalWrite(output27, HIGH);
68  } else if (header.indexOf("GET /27/off")  >= 0) {
69  Serial.println("GPIO 27 off");
70  output27State = "off";
71  digitalWrite(output27, LOW);
72  }
73   client.println("<!DOCTYPE html><html>");
74  client.println("<head><meta name=\\"viewport\\" content=\\"width=device-width,  initial-scale=1\\">");
75  client.println("<style>html { font-family: Helvetica;  display: inline-block; margin: 0px auto; text-align: center;}");
76  client.println(".button  { background-color: #4CAF50; border: none; color: white; padding: 16px 40px;");
77  client.println("text-decoration: none; font-size: 30px; margin: 2px; cursor:  pointer;}");
78  client.println(".button2 {background-color: #555555;}</style></head>");
79  
80  client.println("<body><h1>ESP32 Web Server</h1>");
81  client.println("<p>GPIO  26 - State " + output26State + "</p>");
82  
83  
84  
85  
86 
87  
88  client.println();
89  break;
90  } else {   currentLine = "";  }
91  } else  if (c != '\r') {   currentLine += c;   }
92  }
93  
94  }
95  header = "";
96  client.stop();
97  Serial.println("Client disconnected.");
98  Serial.println("");
99  }
100  }

  /* made by Kusnh13
  For refrence watch YouTube video:-https://youtu.be/Hgq2KX5w-_o   */
  
  #include <WiFi.h>
  
  const char* ssid = "user id"; 
  const char* password = "password"; 
  
  WiFiServer server(80);
  
  String header;
  String output26State = "off";
  String output27State  = "off";
  
  const int output26 = 26;
  const int output27 = 27;
  
  void setup() {
  Serial.begin(115200);
  pinMode(output26, OUTPUT);
  digitalWrite(output26, LOW);
  digitalWrite(output27, LOW);
  
  Serial.print("Connecting  to ");
  Serial.println(ssid);
  WiFi.begin(ssid, password);
  while (WiFi.status()  != WL_CONNECTED) {
  delay(500);
  Serial.print(".");
  }
  Serial.println("");
  Serial.println("WiFi connected.");
  Serial.println("IP address: ");
  Serial.println(WiFi.localIP());
  server.begin();
  }
  
  void loop(){
  WiFiClient client = server.available(); 
  if (client) {      
  Serial.println("New  Client.");
  String currentLine = "";       
  while (client.connected())  {    
  if (client.available()) {   
  char c = client.read();  
  Serial.write(c);          
  header += c;
  if (c == '\n') {     
  if (currentLine.length()  == 0) {
  client.println("HTTP/1.1 200 OK");
  client.println("Content-type:text/html");
  client.println("Connection: close");
  client.println();
  
  // turns  the GPIOs on and off
  if (header.indexOf("GET /26/on") >= 0) {
  Serial.println("GPIO  26 on");
  output26State = "on";
  digitalWrite(output26, HIGH);
  }  else if (header.indexOf("GET /26/off") >= 0) {
  Serial.println("GPIO 26 off");
  output26State = "off";
  digitalWrite(output26, LOW);
  } else if (header.indexOf("GET  /27/on") >= 0) {
  Serial.println("GPIO 27 on");
  output27State = "on";
  digitalWrite(output27, HIGH);
  } else if (header.indexOf("GET /27/off")  >= 0) {
  Serial.println("GPIO 27 off");
  output27State = "off";
  digitalWrite(output27, LOW);
  }
   client.println("<!DOCTYPE html><html>");
  client.println("<head><meta name=\\"viewport\\" content=\\"width=device-width,  initial-scale=1\\">");
  client.println("<style>html { font-family: Helvetica;  display: inline-block; margin: 0px auto; text-align: center;}");
  client.println(".button  { background-color: #4CAF50; border: none; color: white; padding: 16px 40px;");
  client.println("text-decoration: none; font-size: 30px; margin: 2px; cursor:  pointer;}");
  client.println(".button2 {background-color: #555555;}</style></head>");
  
  client.println("<body><h1>ESP32 Web Server</h1>");
  client.println("<p>GPIO  26 - State " + output26State + "</p>");
  
  
  
  
 
  
  client.println();
  break;
  } else {   currentLine = "";  }
  } else  if (c != '\r') {   currentLine += c;   }
  }
  
  }
  header = "";
  client.stop();
  Serial.println("Client disconnected.");
  Serial.println("");
  }
  }

untitled

arduino

1  /* made by Kusnh13
2  For refrence watch YouTube video:-https://youtu.be/Hgq2KX5w-_o
3   */
4  
5  #include <WiFi.h>
6  
7  const char* ssid = "user id"; 
8
9  const char* password = "password"; 
10  
11  WiFiServer server(80);
12  
13
14  String header;
15  String output26State = "off";
16  String output27State
17  = "off";
18  
19  const int output26 = 26;
20  const int output27 = 27;
21
22  
23  void setup() {
24  Serial.begin(115200);
25  pinMode(output26, OUTPUT);
26
27  digitalWrite(output26, LOW);
28  digitalWrite(output27, LOW);
29  
30  Serial.print("Connecting
31  to ");
32  Serial.println(ssid);
33  WiFi.begin(ssid, password);
34  while (WiFi.status()
35  != WL_CONNECTED) {
36  delay(500);
37  Serial.print(".");
38  }
39  Serial.println("");
40
41  Serial.println("WiFi connected.");
42  Serial.println("IP address: ");
43
44  Serial.println(WiFi.localIP());
45  server.begin();
46  }
47  
48  void loop(){
49
50  WiFiClient client = server.available(); 
51  if (client) {      
52  Serial.println("New
53  Client.");
54  String currentLine = "";       
55  while (client.connected())
56  {    
57  if (client.available()) {   
58  char c = client.read();  
59  Serial.write(c);
60          
61  header += c;
62  if (c == '\
63') {     
64  if (currentLine.length()
65  == 0) {
66  client.println("HTTP/1.1 200 OK");
67  client.println("Content-type:text/html");
68
69  client.println("Connection: close");
70  client.println();
71  
72  // turns
73  the GPIOs on and off
74  if (header.indexOf("GET /26/on") >= 0) {
75  Serial.println("GPIO
76  26 on");
77  output26State = "on";
78  digitalWrite(output26, HIGH);
79  }
80  else if (header.indexOf("GET /26/off") >= 0) {
81  Serial.println("GPIO 26 off");
82
83  output26State = "off";
84  digitalWrite(output26, LOW);
85  } else if (header.indexOf("GET
86  /27/on") >= 0) {
87  Serial.println("GPIO 27 on");
88  output27State = "on";
89
90  digitalWrite(output27, HIGH);
91  } else if (header.indexOf("GET /27/off")
92  >= 0) {
93  Serial.println("GPIO 27 off");
94  output27State = "off";
95
96  digitalWrite(output27, LOW);
97  }
98   client.println("<!DOCTYPE html><html>");
99
100  client.println("<head><meta name=\\"viewport\\" content=\\"width=device-width,
101  initial-scale=1\\">");
102  client.println("<style>html { font-family: Helvetica;
103  display: inline-block; margin: 0px auto; text-align: center;}");
104  client.println(".button
105  { background-color: #4CAF50; border: none; color: white; padding: 16px 40px;");
106
107  client.println("text-decoration: none; font-size: 30px; margin: 2px; cursor:
108  pointer;}");
109  client.println(".button2 {background-color: #555555;}</style></head>");
110
111  
112  client.println("<body><h1>ESP32 Web Server</h1>");
113  client.println("<p>GPIO
114  26 - State " + output26State + "</p>");
115  
116  
117  
118  
119 
120  
121
122  client.println();
123  break;
124  } else {   currentLine = "";  }
125  } else
126  if (c != '\
') {   currentLine += c;   }
127  }
128  
129  }
130  header = "";
131
132  client.stop();
133  Serial.println("Client disconnected.");
134  Serial.println("");
135
136  }
137  }

  /* made by Kusnh13
  For refrence watch YouTube video:-https://youtu.be/Hgq2KX5w-_o
   */
  
  #include <WiFi.h>
  
  const char* ssid = "user id"; 

  const char* password = "password"; 
  
  WiFiServer server(80);
  

  String header;
  String output26State = "off";
  String output27State
  = "off";
  
  const int output26 = 26;
  const int output27 = 27;

  
  void setup() {
  Serial.begin(115200);
  pinMode(output26, OUTPUT);

  digitalWrite(output26, LOW);
  digitalWrite(output27, LOW);
  
  Serial.print("Connecting
  to ");
  Serial.println(ssid);
  WiFi.begin(ssid, password);
  while (WiFi.status()
  != WL_CONNECTED) {
  delay(500);
  Serial.print(".");
  }
  Serial.println("");

  Serial.println("WiFi connected.");
  Serial.println("IP address: ");

  Serial.println(WiFi.localIP());
  server.begin();
  }
  
  void loop(){

  WiFiClient client = server.available(); 
  if (client) {      
  Serial.println("New
  Client.");
  String currentLine = "";       
  while (client.connected())
  {    
  if (client.available()) {   
  char c = client.read();  
  Serial.write(c);
          
  header += c;
  if (c == '\
') {     
  if (currentLine.length()
  == 0) {
  client.println("HTTP/1.1 200 OK");
  client.println("Content-type:text/html");

  client.println("Connection: close");
  client.println();
  
  // turns
  the GPIOs on and off
  if (header.indexOf("GET /26/on") >= 0) {
  Serial.println("GPIO
  26 on");
  output26State = "on";
  digitalWrite(output26, HIGH);
  }
  else if (header.indexOf("GET /26/off") >= 0) {
  Serial.println("GPIO 26 off");

  output26State = "off";
  digitalWrite(output26, LOW);
  } else if (header.indexOf("GET
  /27/on") >= 0) {
  Serial.println("GPIO 27 on");
  output27State = "on";

  digitalWrite(output27, HIGH);
  } else if (header.indexOf("GET /27/off")
  >= 0) {
  Serial.println("GPIO 27 off");
  output27State = "off";

  digitalWrite(output27, LOW);
  }
   client.println("<!DOCTYPE html><html>");

  client.println("<head><meta name=\\"viewport\\" content=\\"width=device-width,
  initial-scale=1\\">");
  client.println("<style>html { font-family: Helvetica;
  display: inline-block; margin: 0px auto; text-align: center;}");
  client.println(".button
  { background-color: #4CAF50; border: none; color: white; padding: 16px 40px;");

  client.println("text-decoration: none; font-size: 30px; margin: 2px; cursor:
  pointer;}");
  client.println(".button2 {background-color: #555555;}</style></head>");

  
  client.println("<body><h1>ESP32 Web Server</h1>");
  client.println("<p>GPIO
  26 - State " + output26State + "</p>");
  
  
  
  
 
  

  client.println();
  break;
  } else {   currentLine = "";  }
  } else
  if (c != '\
') {   currentLine += c;   }
  }
  
  }
  header = "";

  client.stop();
  Serial.println("Client disconnected.");
  Serial.println("");

  }
  }

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