Polish, Testing & Presentasi

Error Handling & Robustness

Skenario error yang harus di-handle:

Dart — Robust Connection Wrapperclass RobustConnection {
  final ConnectionManager _manager;
  int _retryCount = 0;
  static const int maxRetries = 3;

  RobustConnection(this._manager);

  /// Send dengan retry
  Future<bool> sendSafe(Map<String, dynamic> data) async {
    for (int i = 0; i < maxRetries; i++) {
      try {
        if (!_manager.isConnected) {
          await _manager.autoConnect();
        }
        _manager.send(data);
        _retryCount = 0;
        return true;
      } catch (e) {
        _retryCount++;
        print('Send failed (attempt ${i + 1}): $e');
        await Future.delayed(
          Duration(seconds: (i + 1) * 2)); // exponential backoff
      }
    }
    return false;
  }

  /// Listen data dengan auto-reconnect
  void listenSafe({
    required Function(Map<String, dynamic>) onData,
    required Function(String) onError,
  }) {
    _manager.dataStream?.listen(
      (data) {
        try {
          onData(data);
          _retryCount = 0;
        } catch (e) {
          onError('Parse error: $e');
        }
      },
      onError: (e) {
        onError('Stream error: $e');
        // Coba reconnect
        Future.delayed(
          const Duration(seconds: 3),
          () => _manager.autoConnect(),
        );
      },
      onDone: () {
        onError('Connection closed');
        Future.delayed(
          const Duration(seconds: 3),
          () => _manager.autoConnect(),
        );
      },
    );
  }
}

UI Polish Checklist

Testing Scenarios

Manual Testing Checklist

Dokumentasi Proyek

README.md Template

Markdown# Smart Environment Monitor 🌡️📱

## Deskripsi
Sistem IoT untuk monitoring suhu, kelembaban, dan cahaya
menggunakan ESP32 + Flutter. Mendukung multiple koneksi:
USB Serial, Bluetooth BLE, WiFi WebSocket, dan MQTT.

## Hardware
- ESP32 DevKit V1
- DHT11 (suhu + kelembaban) → Pin 15
- LDR + 10K resistor (cahaya) → Pin 34
- LED → Pin 2
- Relay module → Pin 4

## Wiring Diagram
(Sertakan foto atau diagram dari Minggu 10)

## Software stack
- **ESP32**: Arduino IDE, PlatformIO
- **Mobile**: Flutter 3.x + Dart
- **Packages**: http, web_socket_channel, flutter_blue_plus,
  mqtt_client, provider, fl_chart, hive
- **Broker**: Mosquitto (lokal)

## Cara Menjalankan
1. Flash firmware ke ESP32 via Arduino IDE
2. Jalankan Mosquitto broker di laptop
3. `flutter run` di folder Flutter project
4. Connect HP ke WiFi "ESP32_SmartEnv"
5. Buka app → auto-detect koneksi

## Screenshots
(Screenshot dari HP — dashboard, controls, history, settings)

## Fitur
- [x] Multi-connection: USB, BLE, WiFi, MQTT
- [x] Auto-switch koneksi
- [x] Real-time sensor dashboard
- [x] LED & relay control
- [x] Data history + chart
- [x] Error handling + auto-reconnect

## Lisensi
MIT

Persiapan Demo

Rekap Perjalanan Belajar 🎉

Final Checklist

• Error handling di semua koneksi
• Loading, empty, dan error state di UI
• Semua 10 test case lolos
• README.md lengkap
• Wiring diagram / foto hardware
• Screenshot app di HP
• Demo flow dipersiapkan (~15 menit)
• Code clean & readable