Web server led control

Learn how to switch on leds with web server hosted by nodemcu v1.0

Jul 24, 2020

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Components and supplies

LED (generic)

NodeMCU ESP8266 Breakout Board

Project description

Code

c_cpp

1//Nodemcu tutorial
2//controlling led with web server.
3//made by  shauryacool in arduino ide
4//tutorial link: https://create.arduino.cc/projecthub/shauryacool/web-server-led-control-with-nodemcu-and-nodemcu-setup-c2a84f
5//copyrights  reserved
6#include <ESP8266WiFi.h>//We need it or compilers oxygen tank will explode.
7
8const  char* ssid = "ssid";//Write your network ssid
9const char* password = "password";//Network  password
10
11int ledPin = D7;
12WiFiServer server(80);
13
14void setup() {
15  
16  pinMode(ledPin,OUTPUT);
17  digitalWrite(ledPin,LOW);//We start with the  led turned off.
18
19  Serial.begin(115200);//remember to set the serial monitor  to 115200 or you will see a lot of junk text.
20  Serial.println();
21  Serial.print("Wifi  connecting to ");
22  Serial.println( ssid );//your ssid
23
24  WiFi.begin(ssid,password);//connecting  to wifi
25
26  Serial.println();
27  Serial.print("Connecting");//connecting
28
29  while( WiFi.status() != WL_CONNECTED ){
30      delay(500);
31      Serial.print(".");        
32  }
33
34  
35  Serial.println();
36
37  Serial.println("Wifi  Connected Success!");//If network connection is success we will see these messages
38  Serial.print("NodeMCU IP Address : ");
39  Serial.println(WiFi.localIP() );
40
41  server.begin();
42  Serial.println("NodeMCU Server started");//server has started
43
44  // Print the IP address
45  Serial.print("Use this URL to connect: ");
46  Serial.print("http://");
47  Serial.print(WiFi.localIP());
48  Serial.println("/");
49  
50}
51
52void loop() {
53
54    // Check if a client has connected
55  WiFiClient  client = server.available();
56  if (!client) {
57    return;
58  }
59
60  //  Wait until the client sends some data
61  Serial.println("Hello New client");//Come  on, we also have to welcome the client, but the client will not able to see it.
62  while(!client.available()){
63    delay(1);
64  }
65
66   // Read the first  line of the request
67  String request = client.readStringUntil('\r');
68  Serial.println(request);
69  client.flush();
70
71   // Match the request
72 
73  int value = LOW;
74  if (request.indexOf("/LED=ON") != -1)  {
75    digitalWrite(ledPin, HIGH);
76    value = HIGH;
77  }
78  if (request.indexOf("/LED=OFF") != -1)  {
79    digitalWrite(ledPin,  LOW);
80    value = LOW;
81  }
82 
83// Set ledPin according to the request
84//digitalWrite(ledPin,  value);
85 
86  // Return the response
87  client.println("HTTP/1.1 200 OK");
88  client.println("Content-Type: text/html");
89  client.println(""); //  do  not forget this one
90  client.println("<!DOCTYPE HTML>");
91  client.println("<html>");
92  client.println("<body>");
93  client.println("<h1>LED Control</h1>");
94  client.println("<p>Made by Shaurya Pratap Singh</p>");
95 
96  client.print("Led  pin is now: ");
97 
98  if(value == HIGH) {
99    client.print("On");
100  } else {
101    client.print("Off");
102  }
103  client.println("<br><br>");
104  client.println("<a href=\\"/LED=ON\\"\\"><button>Turn On </button></a>");
105  client.println("<a href=\\"/LED=OFF\\"\\"><button>Turn Off </button></a><br  />");  
106  client.println("</html>");
107 
108  delay(1);
109  Serial.println("Client  disonnected");
110  Serial.println("");
111  
112}

//Nodemcu tutorial
//controlling led with web server.
//made by  shauryacool in arduino ide
//tutorial link: https://create.arduino.cc/projecthub/shauryacool/web-server-led-control-with-nodemcu-and-nodemcu-setup-c2a84f
//copyrights  reserved
#include <ESP8266WiFi.h>//We need it or compilers oxygen tank will explode.

const  char* ssid = "ssid";//Write your network ssid
const char* password = "password";//Network  password

int ledPin = D7;
WiFiServer server(80);

void setup() {
  
  pinMode(ledPin,OUTPUT);
  digitalWrite(ledPin,LOW);//We start with the  led turned off.

  Serial.begin(115200);//remember to set the serial monitor  to 115200 or you will see a lot of junk text.
  Serial.println();
  Serial.print("Wifi  connecting to ");
  Serial.println( ssid );//your ssid

  WiFi.begin(ssid,password);//connecting  to wifi

  Serial.println();
  Serial.print("Connecting");//connecting

  while( WiFi.status() != WL_CONNECTED ){
      delay(500);
      Serial.print(".");        
  }

  
  Serial.println();

  Serial.println("Wifi  Connected Success!");//If network connection is success we will see these messages
  Serial.print("NodeMCU IP Address : ");
  Serial.println(WiFi.localIP() );

  server.begin();
  Serial.println("NodeMCU Server started");//server has started

  // Print the IP address
  Serial.print("Use this URL to connect: ");
  Serial.print("http://");
  Serial.print(WiFi.localIP());
  Serial.println("/");
  
}

void loop() {

    // Check if a client has connected
  WiFiClient  client = server.available();
  if (!client) {
    return;
  }

  //  Wait until the client sends some data
  Serial.println("Hello New client");//Come  on, we also have to welcome the client, but the client will not able to see it.
  while(!client.available()){
    delay(1);
  }

   // Read the first  line of the request
  String request = client.readStringUntil('\r');
  Serial.println(request);
  client.flush();

   // Match the request
 
  int value = LOW;
  if (request.indexOf("/LED=ON") != -1)  {
    digitalWrite(ledPin, HIGH);
    value = HIGH;
  }
  if (request.indexOf("/LED=OFF") != -1)  {
    digitalWrite(ledPin,  LOW);
    value = LOW;
  }
 
// Set ledPin according to the request
//digitalWrite(ledPin,  value);
 
  // Return the response
  client.println("HTTP/1.1 200 OK");
  client.println("Content-Type: text/html");
  client.println(""); //  do  not forget this one
  client.println("<!DOCTYPE HTML>");
  client.println("<html>");
  client.println("<body>");
  client.println("<h1>LED Control</h1>");
  client.println("<p>Made by Shaurya Pratap Singh</p>");
 
  client.print("Led  pin is now: ");
 
  if(value == HIGH) {
    client.print("On");
  } else {
    client.print("Off");
  }
  client.println("<br><br>");
  client.println("<a href=\\"/LED=ON\\"\\"><button>Turn On </button></a>");
  client.println("<a href=\\"/LED=OFF\\"\\"><button>Turn Off </button></a><br  />");  
  client.println("</html>");
 
  delay(1);
  Serial.println("Client  disonnected");
  Serial.println("");
  
}

Code

c_cpp

1//Nodemcu tutorial
2//controlling led with web server.
3//made by   shauryacool in arduino ide
4//tutorial link: https://create.arduino.cc/projecthub/shauryacool/web-server-led-control-with-nodemcu-and-nodemcu-setup-c2a84f
5//copyrights   reserved
6#include <ESP8266WiFi.h>//We need it or compilers oxygen tank will explode.
7
8const   char* ssid = "ssid";//Write your network ssid
9const char* password = "password";//Network   password
10
11int ledPin = D7;
12WiFiServer server(80);
13
14void setup() {
15   
16  pinMode(ledPin,OUTPUT);
17  digitalWrite(ledPin,LOW);//We start with the   led turned off.
18
19  Serial.begin(115200);//remember to set the serial monitor   to 115200 or you will see a lot of junk text.
20  Serial.println();
21  Serial.print("Wifi   connecting to ");
22  Serial.println( ssid );//your ssid
23
24  WiFi.begin(ssid,password);//connecting   to wifi
25
26  Serial.println();
27  Serial.print("Connecting");//connecting
28
29   while( WiFi.status() != WL_CONNECTED ){
30      delay(500);
31      Serial.print(".");         
32  }
33
34  
35  Serial.println();
36
37  Serial.println("Wifi   Connected Success!");//If network connection is success we will see these messages
38   Serial.print("NodeMCU IP Address : ");
39  Serial.println(WiFi.localIP() );
40
41   server.begin();
42  Serial.println("NodeMCU Server started");//server has started
43
44   // Print the IP address
45  Serial.print("Use this URL to connect: ");
46   Serial.print("http://");
47  Serial.print(WiFi.localIP());
48  Serial.println("/");
49   
50}
51
52void loop() {
53
54    // Check if a client has connected
55  WiFiClient   client = server.available();
56  if (!client) {
57    return;
58  }
59
60  //   Wait until the client sends some data
61  Serial.println("Hello New client");//Come   on, we also have to welcome the client, but the client will not able to see it.
62   while(!client.available()){
63    delay(1);
64  }
65
66   // Read the first   line of the request
67  String request = client.readStringUntil('\
');
68  Serial.println(request);
69   client.flush();
70
71   // Match the request
72 
73  int value = LOW;
74   if (request.indexOf("/LED=ON") != -1)  {
75    digitalWrite(ledPin, HIGH);
76     value = HIGH;
77  }
78  if (request.indexOf("/LED=OFF") != -1)  {
79    digitalWrite(ledPin,   LOW);
80    value = LOW;
81  }
82 
83// Set ledPin according to the request
84//digitalWrite(ledPin,   value);
85 
86  // Return the response
87  client.println("HTTP/1.1 200 OK");
88   client.println("Content-Type: text/html");
89  client.println(""); //  do   not forget this one
90  client.println("<!DOCTYPE HTML>");
91  client.println("<html>");
92   client.println("<body>");
93  client.println("<h1>LED Control</h1>");
94   client.println("<p>Made by Shaurya Pratap Singh</p>");
95 
96  client.print("Led   pin is now: ");
97 
98  if(value == HIGH) {
99    client.print("On");
100   } else {
101    client.print("Off");
102  }
103  client.println("<br><br>");
104   client.println("<a href=\\"/LED=ON\\"\\"><button>Turn On </button></a>");
105   client.println("<a href=\\"/LED=OFF\\"\\"><button>Turn Off </button></a><br   />");  
106  client.println("</html>");
107 
108  delay(1);
109  Serial.println("Client   disonnected");
110  Serial.println("");
111  
112}

//Nodemcu tutorial
//controlling led with web server.
//made by   shauryacool in arduino ide
//tutorial link: https://create.arduino.cc/projecthub/shauryacool/web-server-led-control-with-nodemcu-and-nodemcu-setup-c2a84f
//copyrights   reserved
#include <ESP8266WiFi.h>//We need it or compilers oxygen tank will explode.

const   char* ssid = "ssid";//Write your network ssid
const char* password = "password";//Network   password

int ledPin = D7;
WiFiServer server(80);

void setup() {
   
  pinMode(ledPin,OUTPUT);
  digitalWrite(ledPin,LOW);//We start with the   led turned off.

  Serial.begin(115200);//remember to set the serial monitor   to 115200 or you will see a lot of junk text.
  Serial.println();
  Serial.print("Wifi   connecting to ");
  Serial.println( ssid );//your ssid

  WiFi.begin(ssid,password);//connecting   to wifi

  Serial.println();
  Serial.print("Connecting");//connecting

   while( WiFi.status() != WL_CONNECTED ){
      delay(500);
      Serial.print(".");         
  }

  
  Serial.println();

  Serial.println("Wifi   Connected Success!");//If network connection is success we will see these messages
   Serial.print("NodeMCU IP Address : ");
  Serial.println(WiFi.localIP() );

   server.begin();
  Serial.println("NodeMCU Server started");//server has started

   // Print the IP address
  Serial.print("Use this URL to connect: ");
   Serial.print("http://");
  Serial.print(WiFi.localIP());
  Serial.println("/");
   
}

void loop() {

    // Check if a client has connected
  WiFiClient   client = server.available();
  if (!client) {
    return;
  }

  //   Wait until the client sends some data
  Serial.println("Hello New client");//Come   on, we also have to welcome the client, but the client will not able to see it.
   while(!client.available()){
    delay(1);
  }

   // Read the first   line of the request
  String request = client.readStringUntil('\
');
  Serial.println(request);
   client.flush();

   // Match the request
 
  int value = LOW;
   if (request.indexOf("/LED=ON") != -1)  {
    digitalWrite(ledPin, HIGH);
     value = HIGH;
  }
  if (request.indexOf("/LED=OFF") != -1)  {
    digitalWrite(ledPin,   LOW);
    value = LOW;
  }
 
// Set ledPin according to the request
//digitalWrite(ledPin,   value);
 
  // Return the response
  client.println("HTTP/1.1 200 OK");
   client.println("Content-Type: text/html");
  client.println(""); //  do   not forget this one
  client.println("<!DOCTYPE HTML>");
  client.println("<html>");
   client.println("<body>");
  client.println("<h1>LED Control</h1>");
   client.println("<p>Made by Shaurya Pratap Singh</p>");
 
  client.print("Led   pin is now: ");
 
  if(value == HIGH) {
    client.print("On");
   } else {
    client.print("Off");
  }
  client.println("<br><br>");
   client.println("<a href=\\"/LED=ON\\"\\"><button>Turn On </button></a>");
   client.println("<a href=\\"/LED=OFF\\"\\"><button>Turn Off </button></a><br   />");  
  client.println("</html>");
 
  delay(1);
  Serial.println("Client   disonnected");
  Serial.println("");
  
}

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