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Visualizes IoT sensor data in time series graphs. Includes .NET Core clients for Digitalstrom, Viessmann, Netatmo, Sonnen and WeConnect APIs.

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Azure pipeline

GraphIoT

GraphIoT is a .NET 5 project for polling and storing historical IoT and smart home sensor data and providing it for visualization as time series graphs.

The main server application consists of these two major parts for this purpose:

  1. Data Gathering
    • A set of timed hosted services that regularly poll data from other servers, e.g. home servers of smart home systems or cloud apis of smart home device manufacturers. These values are stored in a configurable database. Currently it supports polling from:
      • Digitalstrom DSS (home server)
      • Netatmo (Cloud API)
      • Sonnen (Cloud API)
      • Viessmann (Cloud API)
      • WeConnect (Cloud API)
  2. Data Visualization
    • A set of RESTful APIs to retrieve the time series data
    • Grafana visualization via:
      • a grafana hosted service that starts and monitors the grafana server process
      • a reverse proxy middleware that redirects to the grafana server
      • a REST+json api that loads, aggregates and preprocesses the stored data and outputs it in a grafana JSON datasource compatible format

Screenshots

Screenshot 1 Screenshot 2 Screenshot 3 Screenshot 4 Screenshot 5 Screenshot 6

Code Structure

GraphIoT consists of several subprojects, some of which are independent of GraphIoT dependencies and can be used within other applications as nuget packages.

It is structured as follows:

Setup

Follow these steps to set up the development environment, publish the application to your own server and create Grafana dashboards with the actual graphs.

Setup application

Configure Grafana

Platform Support

GraphIoT is targeted for .NET 8.0 or higher.

License

The MIT License (MIT) Copyright (c) 2019-2024 Philip Daubmeier

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.

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Visualizes IoT sensor data in time series graphs. Includes .NET Core clients for Digitalstrom, Viessmann, Netatmo, Sonnen and WeConnect APIs.

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