LED_Web_Control.ino

/*ESP8266 LED control over webpage (local IP)!
https://www.clevertronics.blogspot.com
Used Hardware : ESP8266 (NodeMCU)
Used IDE : Arduino IDE 1.8.12
*/

#include <ESP8266WiFi.h>
#include <WiFiClient.h>
#include <ESP8266WebServer.h>
 
const char* ssid = "Your_SSID";         //Update the following areas.
const char* password = "Your_Password";
 
ESP8266WebServer server(80);   //instantiate server at port 80 (http port)
 
String page = "";
int LEDPin = 13;
void setup(void)
{
  //The HTML of the web page
  page = "<h1>Simple NodeMCU Web Server</h1><p><a href=\"LEDOn\"><button>ON</button></a>&nbsp;<a href=\"LEDOff\"><button>OFF</button></a></p>";
  pinMode(LEDPin, OUTPUT);
  digitalWrite(LEDPin, LOW);
   
  delay(1000);
  Serial.begin(9600);
  WiFi.begin(ssid, password);
  Serial.println("");
 
  // Wait for connection
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
 
  Serial.println("");
  Serial.print("Connected to ");
  Serial.println(ssid);
  Serial.print("IP address: ");
  Serial.println(WiFi.localIP());
   
  server.on("/", []()
  {
     server.send(200, "text/html", page);
  });
 
  server.on("/LEDOn", []()
  {
     server.send(200, "text/html", page);
     digitalWrite(LEDPin, HIGH);
     delay(1000);
  });
 
  server.on("/LEDOff", []()
  {
    server.send(200, "text/html", page);
    digitalWrite(LEDPin, LOW);
    delay(1000); 
  });
 
  server.begin();
  Serial.println("Web server started!");
}
 
void loop(void)
{
  server.handleClient();
}