Mission Control App

Responsible for displaying current state of a rocket and the whole ground segment system.
In a nutshell it dynamically creates instances of NodeHandler which are responsible for subscribing to single ROS topic, through websocket it sends data to frontend and finally creates thread to insert received data to InfluxDB.

Those Node Handlers are populated based on config.json file. It's worth mentioning that messages related to rocket are send through MAVLink protocol and because of that they need to be parsed and copied into the config.json using xml_to_json.py script inside mavlink directory Single entry of the config.json looks like this:

{
    "topic_name": "example/topic",
    "msg_type": "ExampleTopic", # Name of .msg file
    "interval": 1000,
    "place": "gs", # from where the topic is coming from (possible values: "gs", "rocket") 
    "msg_fields": [ # std_msgs/Header is required in every msg type!
        {
            "type": "std_msgs/Header",
            "val_name": "header"
        },
        {
            "type": "float32",
            "val_name": "temperature",
            "unit": "°C"
        },
        {
            "type": "int32",
            "val_name": "load_cell",
            "unit": "kg"
        },
        {
            "type": "bool",
            "val_name": "is_alive",
            "unit": "bool"
        }
    ]
}

Prerequisites

• Ubuntu 22.04
• Python 3.10 (https://www.python.org/downloads/release/python-31012/)

Setup

1. Clone this repo and its submodules

   git clone --recursive https://github.com/Simba-Avionic/gs_web_app
   

2. Run the ./scripts/install.sh. It will try to install Docker, ROS2, npm and some related packages. If script fails, try to install ROS2 and/or Docker manually:
   • ROS2 Humble (https://docs.ros.org/en/humble/Installation.html)
   • Docker (https://docs.docker.com/engine/install/) App was only tested with Python3.10 so make sure you have it installed.

Launching the app (step by step)

1. Activate the Python environment (you can also add to ~/.bashrc)

   source venv/bin/activate

2. Make sure to source ROS environment (you can also add to ~/.bashrc)

   source build/install/setup.bash

3. Run the app (Make sure to chmod the script!):

   ./run.sh run_all

   You can also check available commands:

   ./run.sh help

Hope it works! - but I guess it doesn't.

Common errors

• ModuleNotFoundError: No module named 'gs_interfaces'

  You need to source the environment from the main directory: source install/setup.bash. If you don't see the folder install refer to gs_interfaces README.

• (Grafana & InfluxDB) <>:8086: connect: connection refused

  Make sure to set correct IP of your device (IP_ADDRESS) inside .env file.

• await import('source-map-support').then((r) => r.default.install())
  SyntaxError: Unexpected reserved word

  Fix:

  sudo npm cache clean -f
  sudo npm install -g n
  sudo n stable

Technologies used:

• Svelte
• FastApi
• ROS2
• InfluxDB
• Docker
• Python
• Grafana
• MAVLink