https://github.com/cakrava/nfc-lock-with-mqtt

Build the apps for door lock with NFC concept and MQTT for communication to system ESP8266 to open the door
https://github.com/cakrava/nfc-lock-with-mqtt

door esp8266 lock locker mqtt nfc reactnative

Last synced: 23 days ago
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Build the apps for door lock with NFC concept and MQTT for communication to system ESP8266 to open the door

• Host: GitHub
• URL: https://github.com/cakrava/nfc-lock-with-mqtt
• Owner: Cakrava
• Created: 2024-12-31T17:12:09.000Z (24 days ago)
• Default Branch: main
• Last Pushed: 2024-12-31T18:23:07.000Z (24 days ago)
• Last Synced: 2024-12-31T18:28:17.999Z (24 days ago)
• Topics: door, esp8266, lock, locker, mqtt, nfc, reactnative
• Language: JavaScript
• Homepage:
• Size: 3.18 MB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# NFC Lock with MQTT

This application is designed by integrating a custom device from the ESP8266 system, which controls the Solenoid Door for locking the door. The application uses a simple principle for communication with the device, where the smartphone is brought close to the system to trigger the NFC coil. The data inside the NFC chip contains system information like the MQTT topic, which is used as the address path to the Broker from the smartphone.

# Dashboard

   The Dashboard view displays several features, such as the application status with the MQTT broker, user management, history, Wi-Fi direct, and devices, with details as follows:

   1. **User**  

        The user menu is used to add users to use this application.

   2. **History**  

        This menu allows you to view the history of user access to the system.

   3. **Wi-Fi Direct**  

        This feature allows direct communication between the smartphone and the system as an emergency path if the system is not connected to the internet.

   4. **Devices**  

        The device menu is used to add new devices.

   And several other views like the summary of the history.

![1](https://github.com/user-attachments/assets/ed586139-28e9-4f35-9415-69f1a615c280)

![2](https://github.com/user-attachments/assets/22a3b81a-8718-405a-a975-e15b61daa0da)

# Archive

   This view is specifically used by the admin to monitor the application and system, where they can see the history of user access and the system logs.

![3](https://github.com/user-attachments/assets/d7abecc5-26a4-4f3a-a6c9-b9625626be6c)

# Code ESP8266 for the system

This code is the program code from the esp8266 which works according to its function, namely sending online status to devicename-status and also receiving a message response from the topic devicename which will be received from the smartphone device.

```cpp

#include  // Pastikan library ini telah diinstal

#include 

#include 

#include 

// Informasi WiFi

const char* ssid = "ShopeePay";

const char* password = "satusampaidelapan";

const char* ap_ssid = "Device-19d8G";

const char* ap_password = "SISTEMKEAMANANSEKOLAHAMAN";

const IPAddress ap_ip(192, 168, 4, 1);

const IPAddress ap_gateway(192, 168, 4, 1);

const IPAddress ap_subnet(255, 255, 255, 0);

// Informasi MQTT

const char* mqtt_server = "broker.emqx.io";

const char* mqtt_topic_receive = "Device-19d8G"; // Topik untuk menerima pesan

const char* mqtt_topic_status = "Device-19d8G-status"; // Topik untuk mengirim status

WiFiClient espClient;

PubSubClient client(espClient);

ESP8266WebServer server(80); // Web server on port 80

// Pin untuk buzzer dan relay

const int buzzerPin = D8;

const int relayPin = D3;

void setupWiFi() {

  Serial.print("Menghubungkan ke WiFi: ");

  Serial.println(ssid);

  WiFi.begin(ssid, password);

  while (WiFi.status() != WL_CONNECTED) {

    delay(500);

    Serial.print(".");

  }

  Serial.println("\nWiFi terhubung.");

  Serial.print("Alamat IP: ");

  Serial.println(WiFi.localIP());

}

void setupAPAndWebServer() {

  WiFi.softAPConfig(ap_ip, ap_gateway, ap_subnet);

  WiFi.softAP(ap_ssid, ap_password);

  Serial.println("AP statis dibuat.");

  Serial.print("SSID: ");

  Serial.println(ap_ssid);

  Serial.print("Password: ");

  Serial.println(ap_password);

  Serial.print("Alamat IP: ");

  Serial.println(WiFi.softAPIP());

  // Handle POST request to '/message'

  server.on("/message", HTTP_POST, []() {

    String body = server.arg("plain"); // Mendapatkan data body dari request

    Serial.println("Pesan diterima: " + body);

    // Parsing JSON

    StaticJsonDocument<200> jsonDoc; // Buffer untuk parsing JSON

    DeserializationError error = deserializeJson(jsonDoc, body);

    if (error) {

      Serial.println("Gagal parsing JSON: " + String(error.c_str()));

      server.send(400, "application/json", "{\"status\":\"error\",\"message\":\"Invalid JSON\"}");

      return;

    }

    // Mendapatkan nilai "message" dari JSON

    const char* message = jsonDoc["message"];

    if (String(message) == "buka") {

      Serial.println("Perintah 'buka' diterima, menjalankan open().");

      open(); // Jalankan fungsi open() jika message adalah "buka"

    }

    server.send(200, "application/json", "{\"status\":\"success\"}");

  });

  server.begin();

}

void setupMQTT() {

  client.setServer(mqtt_server, 1883);

  client.setCallback(callback);

}

void callback(char* topic, byte* payload, unsigned int length) {

  Serial.print("Pesan diterima di topik [");

  Serial.print(topic);

  Serial.print("]: ");

  String message;

  for (unsigned int i = 0; i < length; i++) {

    message += (char)payload[i];

  }

  Serial.println(message);

  if (String(topic) == mqtt_topic_receive) {

    if (message == "Pintu Dibuka oleh pengguna dengan UID valid") {

      open();

    }

  }

}

void reconnectMQTT() {

  while (!client.connected()) {

    Serial.print("Menghubungkan ke MQTT...");

    String clientId = "ESP8266Client-";

    clientId += String(random(0xffff), HEX);

    if (client.connect(clientId.c_str())) {

      Serial.println("Berhasil terhubung.");

      client.subscribe(mqtt_topic_receive); // Berlangganan ke topik Device-19d8G

    } else {

      Serial.print("Gagal, rc=");

      Serial.print(client.state());

      Serial.println(". Coba lagi dalam 5 detik.");

      delay(5000);

    }

  }

}

void sendMQTTOnlineMessage() {

  if (client.connected()) {

    client.publish(mqtt_topic_status, "online"); // Mengirim status "online"

  }

}

void open() {

  Serial.println("Fungsi open() dipanggil.");

  digitalWrite(buzzerPin, HIGH);

  delay(200);

  digitalWrite(buzzerPin, LOW);

  delay(200);

  digitalWrite(buzzerPin, HIGH);

  delay(200);

  digitalWrite(buzzerPin, LOW);

  digitalWrite(relayPin, LOW);

  delay(5000);

  digitalWrite(relayPin, HIGH);

}

void setup() {

  Serial.begin(115200);

  pinMode(buzzerPin, OUTPUT);

  pinMode(relayPin, OUTPUT);

 digitalWrite(relayPin, HIGH);

  setupWiFi();

  setupAPAndWebServer();

  setupMQTT();

}

void loop() {

  if (!client.connected()) {

    reconnectMQTT();

  }

  client.loop();

  server.handleClient(); // Handle incoming HTTP requests

  sendMQTTOnlineMessage();

  delay(2000); // Kirim pesan "online" setiap 2 detik

}