Complete Home Automation Project Using KME Smart

In this project, we will build a Complete Home Automation System using the KME Smart App and ESP32/ESP8266 microcontroller.
This project allows you to control your home appliances (lights, fans, etc.) using your smartphone via Wi-Fi and internet connectivity — no extra cloud setup required!

By the end of this tutorial, you’ll be able to:

• Control multiple devices remotely from your smartphone
• Monitor real-time device status
• Integrate KME Smart App with ESP32 easily
• Expand your system for full smart home control

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🧩 Components Required

Component	Quantity	Description
ESP32 or ESP8266	1	Wi-Fi microcontroller board
4-Channel Relay Module	1	To control appliances
Bulb / Fan / LED	As needed	Load devices
Jumper Wires	As required	Connections
Breadboard	1	Circuit setup
KME Smart App	1	Smartphone control app (Android/iOS)
USB Cable	1	For programming the board

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🔌 Circuit Diagram

📷 [Insert Circuit Diagram Image Here]
Connections:

• Relay IN1 → GPIO 23
• Relay IN2 → GPIO 22
• Relay IN3 → GPIO 21
• Relay IN4 → GPIO 19
• Relay VCC → 5V
• Relay GND → GND
• Appliances connected to relay outputs

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📱 KME Smart App Setup

1. Download KME Smart from the Play Store / App Store.
2. Create an account and log in.
3. Tap “Add Device” → “ESP Module” → “Wi-Fi Mode”.
4. Enter your Wi-Fi SSID and Password.
5. Get the Device ID and API Key from the KME dashboard.
6. Use those credentials in the Arduino code below.

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⚙️ ESP32 Arduino Code

#include <WiFi.h>
#include <HTTPClient.h>

const char* ssid = "Your_WiFi_SSID";
const char* password = "Your_WiFi_Password";

// KME Smart Device API Key
String deviceID = "Your_Device_ID";
String apiKey = "Your_API_Key";

int relay1 = 23;
int relay2 = 22;
int relay3 = 21;
int relay4 = 19;

void setup() {
  Serial.begin(115200);
  WiFi.begin(ssid, password);
  Serial.print("Connecting to Wi-Fi");
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("\nConnected to Wi-Fi!");

  pinMode(relay1, OUTPUT);
  pinMode(relay2, OUTPUT);
  pinMode(relay3, OUTPUT);
  pinMode(relay4, OUTPUT);
  digitalWrite(relay1, HIGH);
  digitalWrite(relay2, HIGH);
  digitalWrite(relay3, HIGH);
  digitalWrite(relay4, HIGH);
}

void loop() {
  HTTPClient http;
  String url = "http://kmesmart.com/api/getstatus.php?device=" + deviceID + "&key=" + apiKey;
  http.begin(url);
  int httpCode = http.GET();

  if (httpCode == 200) {
    String payload = http.getString();
    Serial.println(payload);

    // Example JSON: {"relay1":1,"relay2":0,"relay3":1,"relay4":0}
    if (payload.indexOf("\"relay1\":1") > 0) digitalWrite(relay1, LOW); else digitalWrite(relay1, HIGH);
    if (payload.indexOf("\"relay2\":1") > 0) digitalWrite(relay2, LOW); else digitalWrite(relay2, HIGH);
    if (payload.indexOf("\"relay3\":1") > 0) digitalWrite(relay3, LOW); else digitalWrite(relay3, HIGH);
    if (payload.indexOf("\"relay4\":1") > 0) digitalWrite(relay4, LOW); else digitalWrite(relay4, HIGH);
  }

  http.end();
  delay(5000);
}

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⚡ How It Works

1. The ESP32 connects to your Wi-Fi network.
2. It requests the current device status from the KME Smart cloud.
3. Based on the received data, relays are turned ON or OFF.
4. When you toggle a switch in the KME Smart App, it updates the server, and ESP32 instantly receives the change.

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📺 Video Tutorial

🎥 [Embed your YouTube video here]
Use the WordPress “YouTube” block → paste your YouTube video link.

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🧠 Features of This Project

• Control up to 4 appliances from your smartphone
• Works via Wi-Fi and Internet
• Real-time feedback and status monitoring
• Expandable to more channels easily
• No need for Blynk or custom cloud

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🏁 Conclusion

This Home Automation Project using KME Smart is one of the simplest and most powerful IoT setups.
It combines ease of use with professional-level control over your home devices.
You can easily integrate sensors, timers, or even voice assistants like Alexa and Google Assistant later.