Real-Time Energy Monitoring System

A system to monitor energy usage in real-time using a Raspberry Pi and a Flutter mobile

Overview

• Flutter App: Displays real-time energy data, historical charts, and generates PDF
• Raspberry Pi Scripts: Collects energy data and serves it via an API

Directory Structure

• flutter_app/: Flutter application source code
• pi_scripts/: Python scripts for the Raspberry Pi

Prerequisites

• Flutter: Stable channel (e.g., 3.22.x), Dart 3.x.
• Python: 3.9+ on Raspberry Pi.
• Raspberry Pi: Running Raspberry Pi OS 64-bit

Setup --- Flutter App

1. Navigate to 'flutter_app/': bash cd flutter_app

2. Install dependencies: bash flutter pub get

3. Update in lib.main.dart with your Rasberry Pi's IP (e.g., 192.168.1.100).

4. Run on an emulator or device bash flutter run --no-enable-impeller

Raspberry Pi Scripts

1. Copy pi_scripts/ to your Raspberry Pi (e.g., /home/pi/): bash scp -r pi_scripts/ pi@:~/

2. Install Python dependencies (e.g., fastapi, uvicorn): bash pip3 install fastapi uvicorn

3. Run the energy monitoring scripts: bash python3 ~/pi_scripts/energy_monitor.py

4. Run the API server bash uvicorn pi_scripts.api:app --host 0.0.0.0 --port 8000

Usage

• Launch the Fluuter app to view real-time energy data from the Pi.
• Use the "Refresh" button to update data manually.
• Generate PDF reports via the PDF icon.
• Toggle "Advanced Mode" for future features.

Dependencies

• Flutter: http, sqflite, fl_chart, pdf, printing, path_provider, path.
• Python: fastapi, uvicorn.

License

MIT License

Copyright (c) 2025 Ian Katengeza

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.