[GH-ISSUE #872] What is the best way to display the Ip address when connected to wifi?

kerem commented

2026-02-28 01:26:50 +03:00

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Originally created by @World525 on GitHub (Apr 25, 2019).
Original GitHub issue: https://github.com/tzapu/WiFiManager/issues/872

I have tried many ways to do this such as js to change the value of textbox to ip and automatically redirecting the webpage to the ip but then both failed. What is the best way to show the ip without using Serial Monitor and connect it to an android device? Thanks.

Originally created by @World525 on GitHub (Apr 25, 2019). Original GitHub issue: https://github.com/tzapu/WiFiManager/issues/872 I have tried many ways to do this such as js to change the value of textbox to ip and automatically redirecting the webpage to the ip but then both failed. What is the best way to show the ip without using Serial Monitor and connect it to an android device? Thanks.

kerem commented

2026-02-28 01:26:50 +03:00

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@tablatronix commented on GitHub (Apr 25, 2019):

Not sure I understand, display where?

If you do not know the ip, then a webpage is useless, how will you get to it, you could try using mdns and hostname

@tablatronix commented on GitHub (Apr 25, 2019): Not sure I understand, display where? If you do not know the ip, then a webpage is useless, how will you get to it, you could try using mdns and hostname

kerem commented

2026-02-28 01:26:50 +03:00

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@World525 commented on GitHub (Apr 27, 2019):

@tablatronix Thanks for replying. What I am trying to say is how do I display the ip of the esp8266 when it connects to the internet. What is the best way to display it in the webpage? Right now, I am tried to use js to update it but then it doesn't work. I will share to you my WiFiManager so that you can see as well. Thank you :)

@World525 commented on GitHub (Apr 27, 2019): @tablatronix Thanks for replying. What I am trying to say is how do I display the ip of the esp8266 when it connects to the internet. What is the best way to display it in the webpage? Right now, I am tried to use js to update it but then it doesn't work. I will share to you my WiFiManager so that you can see as well. Thank you :)

kerem commented

2026-02-28 01:26:50 +03:00

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@World525 commented on GitHub (Apr 27, 2019):

I invited you to see the edited version. Thanks

@World525 commented on GitHub (Apr 27, 2019): I invited you to see the edited version. Thanks

kerem commented

2026-02-28 01:26:50 +03:00

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@tablatronix commented on GitHub (Apr 27, 2019):

you cannot, this is already discussed at length elsewhere, the ap is shutdown when connecting to save

@tablatronix commented on GitHub (Apr 27, 2019): you cannot, this is already discussed at length elsewhere, the ap is shutdown when connecting to save

kerem commented

2026-02-28 01:26:50 +03:00

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@World525 commented on GitHub (Apr 30, 2019):

@tablatronix I have been stuck for a while and I don't know why esp8266.local doesn't respond but then the ip responds. Here is the code I got from the example:

#include <ESP8266WiFi.h>
#include <ESP8266WebServer.h>
#include <ESP8266mDNS.h>;
 
// change these values to match your network
char ssid[] = "SSID";       //  your network SSID (name)
char pass[] = "password";    // your network password
 
WiFiServer server(80);
 
String header = "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\n\r\n";
String html_1 = "<!DOCTYPE html><html><head><meta name='viewport' content='width=device-width, initial-scale=1.0'/><meta charset='utf-8'><style>body {font-size:140%;} #main {display: table; margin: auto;  padding: 0 10px 0 10px; } h2,{text-align:center; } .button { padding:10px 10px 10px 10px; width:100%;  background-color: #4CAF50; font-size: 120%;}</style><title>LED Control</title></head><body><div id='main'><h2>LED Control</h2>";
String html_2 = "";
String html_4 = "</div></body></html>";
 
String request = "";
int LED_Pin = D1;
 
void setup() 
{
    pinMode(LED_Pin, OUTPUT); 
 
      Serial.begin(9600);
      delay(500);
      Serial.println(F("Serial started at 9600"));
      Serial.println();
 
      // We start by connecting to a WiFi network
      Serial.print(F("Connecting to "));  Serial.println(ssid);
 
 
      WiFi.begin(ssid, pass);
 
      while (WiFi.status() != WL_CONNECTED) 
      {
          Serial.print(".");    delay(500);
      }
      Serial.println("");
      Serial.println(F("[CONNECTED]"));
      Serial.print("[IP ");              
      Serial.print(WiFi.localIP()); 
      Serial.println("]");
      if (!MDNS.begin("esp8266"))   {  Serial.println("Error setting up MDNS responder!");  }
      else                          {  Serial.println("mDNS responder started");  }
 
      // start a server
      server.begin();
      Serial.println("Server started");
 
} // void setup()
 
 
 
void loop() 
{
 
    // Check if a client has connected
    WiFiClient client = server.available();
    if (!client)  {  return;  }
 
    // Read the first line of the request
    request = client.readStringUntil('\r');
 
    if       ( request.indexOf("LEDON") > 0 )  { digitalWrite(LED_Pin, HIGH);  }
    else if  ( request.indexOf("LEDOFF") > 0 ) { digitalWrite(LED_Pin, LOW);   }
 
 
    // Get the LED pin status and create the LED status message
    if (digitalRead(LED_Pin) == HIGH) 
    {
        // the LED is on so the button needs to say turn it off
       html_2 = "<form id='F1' action='LEDOFF'><input class='button' type='submit' value='Turn off the LED' ></form><br>";
    }
    else                              
    {
        // the LED is off so the button needs to say turn it on
        html_2 = "<form id='F1' action='LEDON'><input class='button' type='submit' value='Turn on the LED' ></form><br>";
    }
 
 
    client.flush();
 
    client.print( header );
    client.print( html_1 );    
    client.print( html_2 );
    client.print( html_4);
 
    delay(5);
  // The client will actually be disconnected when the function returns and 'client' object is detroyed
 
}

@World525 commented on GitHub (Apr 30, 2019): @tablatronix I have been stuck for a while and I don't know why esp8266.local doesn't respond but then the ip responds. Here is the code I got from the example: ``` #include <ESP8266WiFi.h> #include <ESP8266WebServer.h> #include <ESP8266mDNS.h>; // change these values to match your network char ssid[] = "SSID"; // your network SSID (name) char pass[] = "password"; // your network password WiFiServer server(80); String header = "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\n\r\n"; String html_1 = "<!DOCTYPE html><html><head><meta name='viewport' content='width=device-width, initial-scale=1.0'/><meta charset='utf-8'><style>body {font-size:140%;} #main {display: table; margin: auto; padding: 0 10px 0 10px; } h2,{text-align:center; } .button { padding:10px 10px 10px 10px; width:100%; background-color: #4CAF50; font-size: 120%;}</style><title>LED Control</title></head><body><div id='main'><h2>LED Control</h2>"; String html_2 = ""; String html_4 = "</div></body></html>"; String request = ""; int LED_Pin = D1; void setup() { pinMode(LED_Pin, OUTPUT); Serial.begin(9600); delay(500); Serial.println(F("Serial started at 9600")); Serial.println(); // We start by connecting to a WiFi network Serial.print(F("Connecting to ")); Serial.println(ssid); WiFi.begin(ssid, pass); while (WiFi.status() != WL_CONNECTED) { Serial.print("."); delay(500); } Serial.println(""); Serial.println(F("[CONNECTED]")); Serial.print("[IP "); Serial.print(WiFi.localIP()); Serial.println("]"); if (!MDNS.begin("esp8266")) { Serial.println("Error setting up MDNS responder!"); } else { Serial.println("mDNS responder started"); } // start a server server.begin(); Serial.println("Server started"); } // void setup() void loop() { // Check if a client has connected WiFiClient client = server.available(); if (!client) { return; } // Read the first line of the request request = client.readStringUntil('\r'); if ( request.indexOf("LEDON") > 0 ) { digitalWrite(LED_Pin, HIGH); } else if ( request.indexOf("LEDOFF") > 0 ) { digitalWrite(LED_Pin, LOW); } // Get the LED pin status and create the LED status message if (digitalRead(LED_Pin) == HIGH) { // the LED is on so the button needs to say turn it off html_2 = "<form id='F1' action='LEDOFF'><input class='button' type='submit' value='Turn off the LED' ></form><br>"; } else { // the LED is off so the button needs to say turn it on html_2 = "<form id='F1' action='LEDON'><input class='button' type='submit' value='Turn on the LED' ></form><br>"; } client.flush(); client.print( header ); client.print( html_1 ); client.print( html_2 ); client.print( html_4); delay(5); // The client will actually be disconnected when the function returns and 'client' object is detroyed } ```

kerem commented

2026-02-28 01:26:50 +03:00

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@tablatronix commented on GitHub (Dec 4, 2019):

I think you are now required to run MDNS.update in loop to service it, not sure

@tablatronix commented on GitHub (Dec 4, 2019): I think you are now required to run MDNS.update in loop to service it, not sure

kerem commented

2026-02-28 01:26:50 +03:00

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@chandra358566 commented on GitHub (Mar 17, 2023):

this program ok but
how connect two led control?

@chandra358566 commented on GitHub (Mar 17, 2023): this program ok but how connect two led control?

kerem commented

2026-02-28 01:26:50 +03:00

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@chandra358566 commented on GitHub (Mar 17, 2023):

/*

Sketch: ESP8266_LED_Control_02C
Now with added CSS and a single button
Control an LED from a web browser
Intended to be run on an ESP8266
connect to the ESP8266 AP then
use web broswer to go to 192.168.4.1

*/

#include <ESP8266WiFi.h>
const char WiFiPassword[] = "1234567890";
const char AP_NameChar[] = "gowrishankar" ;

WiFiServer server(80);

String header = "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\n\r\n";
String html_1 = "<html><head></head>

LED Control

";
String html_2 = "";
String html_4 = "

</html>";

String request = "";
int LED_Pin = 02;

void setup()
{
pinMode(LED_Pin, OUTPUT);

boolean conn = WiFi.softAP(AP_NameChar, WiFiPassword);
server.begin();

} // void setup()

void loop()
{

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

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

if       ( request.indexOf("LEDON") > 0 )  { digitalWrite(LED_Pin, HIGH);  }
else if  ( request.indexOf("LEDOFF") > 0 ) { digitalWrite(LED_Pin, LOW);   }


// Get the LED pin status and create the LED status message
if (digitalRead(LED_Pin) == HIGH) 
{
    // the LED is on so the button needs to say turn it off
   html_2 = "<form id='F1' action='LEDOFF'><input class='button' type='submit' value='Turn of the LED' ></form>";
}
else                              
{
    // the LED is off so the button needs to say turn it on
    html_2 = "<form id='F1' action='LEDON'><input class='button' type='submit' value='Turn on the LED' ></form>";
}


client.flush();

client.print( header );
client.print( html_1 );    
client.print( html_2 );
client.print( html_4);

delay(5);

// The client will actually be disconnected when the function returns and 'client' object is detroyed

} // void loop()

@chandra358566 commented on GitHub (Mar 17, 2023): /* * Sketch: ESP8266_LED_Control_02C * Now with added CSS and a single button * Control an LED from a web browser * Intended to be run on an ESP8266 * * connect to the ESP8266 AP then * use web broswer to go to 192.168.4.1 * */ #include <ESP8266WiFi.h> const char WiFiPassword[] = "1234567890"; const char AP_NameChar[] = "gowrishankar" ; WiFiServer server(80); String header = "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\n\r\n"; String html_1 = "<!DOCTYPE html><html><head><meta name='viewport' content='width=device-width, initial-scale=1.0'/><meta charset='utf-8'><style>body {font-size:140%;} #main {display: table; margin: auto; padding: 0 10px 0 10px; } h2,{text-align:center; } .button { padding:10px 10px 10px 10px; width:100%; background-color: #4CAF50; font-size: 120%;}</style><title>LED Control</title></head><body><div id='main'><h2>LED Control</h2>"; String html_2 = ""; String html_4 = "</div></body></html>"; String request = ""; int LED_Pin = 02; void setup() { pinMode(LED_Pin, OUTPUT); boolean conn = WiFi.softAP(AP_NameChar, WiFiPassword); server.begin(); } // void setup() void loop() { // Check if a client has connected WiFiClient client = server.available(); if (!client) { return; } // Read the first line of the request request = client.readStringUntil('\r'); if ( request.indexOf("LEDON") > 0 ) { digitalWrite(LED_Pin, HIGH); } else if ( request.indexOf("LEDOFF") > 0 ) { digitalWrite(LED_Pin, LOW); } // Get the LED pin status and create the LED status message if (digitalRead(LED_Pin) == HIGH) { // the LED is on so the button needs to say turn it off html_2 = "<form id='F1' action='LEDOFF'><input class='button' type='submit' value='Turn of the LED' ></form>"; } else { // the LED is off so the button needs to say turn it on html_2 = "<form id='F1' action='LEDON'><input class='button' type='submit' value='Turn on the LED' ></form>"; } client.flush(); client.print( header ); client.print( html_1 ); client.print( html_2 ); client.print( html_4); delay(5); // The client will actually be disconnected when the function returns and 'client' object is detroyed } // void loop()

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[GH-ISSUE #872] What is the best way to display the Ip address when connected to wifi? #736

LED Control