eHydroTel

This project is a mobile application for controlling and monitoring hydroponic IoT devices, designed to help users manage plant growth through real-time data visualization and device interaction.

The application integrates directly with IoT hardware to receive live pH and PPM sensor data via WebSocket, enabling accurate monitoring and timely intervention during plant growth cycles.

Highlights

Real-time IoT data streaming using WebSocket
Clean Architecture for scalable feature growth
Secure authentication with login and signup
Designed for long-running plant monitoring sessions

Core features

Authentication
- User registration and login
- Secure session handling
Plant Session Dashboard
- Create and monitor plant growth sessions
- Track lifecycle status per plant
Device Registration & Monitoring
- Register hydroponic IoT devices
- Monitor device status and connectivity
Real-time Sensor Data
- Live pH and PPM updates via WebSocket
- Automatic UI refresh without polling
Application Notifications
- Alerts for abnormal pH/PPM values
- Device status notifications

Tech stack

Mobile: Flutter
State Management: Riverpod
Routing: GoRouter
Networking: HTTP Client
Realtime Communication: WebSocket
Data Modeling: Freezed
Architecture: Clean Architecture

Architecture overview

Presentation Layer
- Flutter UI widgets
- Riverpod providers and notifiers
Domain Layer
- Business logic for plant sessions and devices
- Use cases for realtime data processing
Data Layer
- REST API integration for CRUD operations
- WebSocket service for realtime sensor streaming

WebSocket streams are handled as reactive data sources and injected into the presentation layer via providers.

Technical challenges

Handling unstable IoT connectivity and reconnection logic
Synchronizing REST-based state with realtime WebSocket updates
Designing a UI that remains readable during continuous data changes

Impact & lessons learned

WebSocket integration is critical for responsive IoT monitoring systems
Clean Architecture greatly simplifies feature isolation and testing
Real-time data visualization must balance accuracy with UI stability

Credits

Role: Mobile & IoT Application Developer
Domain: Smart Agriculture / Hydroponics