. 🏠 Home Automation Made Easy: Create Smart Homes

#include <WiFi.h>
#include <ESPAsyncWebServer.h>

const char* ssid = "YourWiFiName";
const char* password = "YourWiFiPassword";

AsyncWebServer server(80);

#define RELAY1 2
#define RELAY2 4
#define RELAY3 5
#define RELAY4 18
#define BTN1 19
#define BTN2 21

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

  pinMode(RELAY1, OUTPUT);
  pinMode(RELAY2, OUTPUT);
  pinMode(RELAY3, OUTPUT);
  pinMode(RELAY4, OUTPUT);
  pinMode(BTN1, INPUT_PULLUP);
  pinMode(BTN2, INPUT_PULLUP);

  digitalWrite(RELAY1, LOW);
  digitalWrite(RELAY2, LOW);
  digitalWrite(RELAY3, LOW);
  digitalWrite(RELAY4, LOW);

  WiFi.begin(ssid, password);
  Serial.println("Connecting...");
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("\nConnected! IP:");
  Serial.println(WiFi.localIP());

  server.on("/", HTTP_GET, [](AsyncWebServerRequest *request){
    request->send(200, "text/html",
      "<h1>YaranaIoT Guru - Smart Home</h1>"
      "<p><a href='/relay1/on'>Light ON</a> | <a href='/relay1/off'>Light OFF</a></p>"
      "<p><a href='/relay2/on'>Fan ON</a> | <a href='/relay2/off'>Fan OFF</a></p>"
      "<p><a href='/relay3/on'>Bulb ON</a> | <a href='/relay3/off'>Bulb OFF</a></p>"
      "<p><a href='/relay4/on'>Plug ON</a> | <a href='/relay4/off'>Plug OFF</a></p>");
  });

  server.on("/relay1/on", HTTP_GET, [](AsyncWebServerRequest *request){
    digitalWrite(RELAY1, HIGH);
    request->send(200, "text/html", "Light ON");
  });
  server.on("/relay1/off", HTTP_GET, [](AsyncWebServerRequest *request){
    digitalWrite(RELAY1, LOW);
    request->send(200, "text/html", "Light OFF");
  });

  server.on("/relay2/on", HTTP_GET, [](AsyncWebServerRequest *request){
    digitalWrite(RELAY2, HIGH);
    request->send(200, "text/html", "Fan ON");
  });
  server.on("/relay2/off", HTTP_GET, [](AsyncWebServerRequest *request){
    digitalWrite(RELAY2, LOW);
    request->send(200, "text/html", "Fan OFF");
  });

  server.begin();
}

void loop() {
  if (digitalRead(BTN1) == LOW) {
    digitalWrite(RELAY1, !digitalRead(RELAY1));
    delay(300);
  }
  if (digitalRead(BTN2) == LOW) {
    digitalWrite(RELAY2, !digitalRead(RELAY2));
    delay(300);
  }
}