shivasiddharth/Wemos_Relay_Web_Control.ino

## Wemos_Relay_Web_Control.ino
//https://www.youtube.com/c/SidsEClassroom

#include <ESP8266WiFi.h>
#include <ESP8266mDNS.h>
#include <WiFiUdp.h>

const char* ssid = "";             //Set your wifi network name(ssid)
const char* password = "";                //Set your router password

int RelayPin = D1;          //Relay Shield is controlled by pin 1 (D1)
WiFiServer server(80);

void setup() {
  Serial.begin(115200);
  delay(10);


  pinMode(RelayPin, OUTPUT);
  digitalWrite(RelayPin, LOW);

  // Connect to WiFi network
  Serial.println();
  Serial.println();
  Serial.print("Connecting to ");
  Serial.println(ssid);

  WiFi.mode(WIFI_STA);
  WiFi.begin(ssid, password);

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

  // Start the server
  server.begin();
  Serial.println("Server started");

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


void loop() {


  // Check for an active client
  WiFiClient client = server.available();
  if (!client) {
    return;
  }

  // Wait until client responds
  Serial.println("new client");
  while(!client.available()){
    delay(1);
  }

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

  // Match the request

  int value = LOW;
  if (request.indexOf("/Relay=ON") != -1) {
    digitalWrite(RelayPin, HIGH);
    value = HIGH;
  }
  if (request.indexOf("/Relay=OFF") != -1){
    digitalWrite(RelayPin, LOW);
    value = LOW;
  }


  // Return the client 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.print("Relay pin is now: ");

  if(value == HIGH) {
    client.print("On");
  } else {
    client.print("Off");
  }
  client.println("<br><br>");
  client.println("Click <a href=\"/Relay=ON\">here</a> to turn the Relay ON<br>");
  client.println("Click <a href=\"/Relay=OFF\">here</a> to turn the Relay OFF<br>");
  client.println("</html>");

  delay(1);
  Serial.println("Client disconnected");
  Serial.println("");

}
	//https://www.youtube.com/c/SidsEClassroom

	#include <ESP8266WiFi.h>
	#include <ESP8266mDNS.h>
	#include <WiFiUdp.h>

	const char* ssid = ""; //Set your wifi network name(ssid)
	const char* password = ""; //Set your router password

	int RelayPin = D1; //Relay Shield is controlled by pin 1 (D1)
	WiFiServer server(80);

	void setup() {
	Serial.begin(115200);
	delay(10);


	pinMode(RelayPin, OUTPUT);
	digitalWrite(RelayPin, LOW);

	// Connect to WiFi network
	Serial.println();
	Serial.println();
	Serial.print("Connecting to ");
	Serial.println(ssid);

	WiFi.mode(WIFI_STA);
	WiFi.begin(ssid, password);

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

	// Start the server
	server.begin();
	Serial.println("Server started");

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


	void loop() {


	// Check for an active client
	WiFiClient client = server.available();
	if (!client) {
	return;
	}

	// Wait until client responds
	Serial.println("new client");
	while(!client.available()){
	delay(1);
	}

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

	// Match the request

	int value = LOW;
	if (request.indexOf("/Relay=ON") != -1) {
	digitalWrite(RelayPin, HIGH);
	value = HIGH;
	}
	if (request.indexOf("/Relay=OFF") != -1){
	digitalWrite(RelayPin, LOW);
	value = LOW;
	}



	// Return the client 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.print("Relay pin is now: ");

	if(value == HIGH) {
	client.print("On");
	} else {
	client.print("Off");
	}
	client.println("<br><br>");
	client.println("Click <a href=\"/Relay=ON\">here</a> to turn the Relay ON<br>");
	client.println("Click <a href=\"/Relay=OFF\">here</a> to turn the Relay OFF<br>");
	client.println("</html>");

	delay(1);
	Serial.println("Client disconnected");
	Serial.println("");

	}