Simulation Exercise (Node-RED-Firebase-JS)

• Simulate a live time series voltage & temperature data stream from Node-RED.

• Push the said data stream from Node-RED to Google Firebase Realtime Database using any HTTP client in Node-RED.

• The data stored in Firebase needs to have the following structure:

  • Voltage:

    The key for the stored json data should be the epoch at which the data was generated and the voltage value generated at that time.

    interface Voltage {
        [timestamp: string]: number;
    }

    Example:

    {
        "1663306125368": 35,
        "1663306125390": 32
    }

  • Temperature:

    The key for the stored json data should be the epoch at which the data was generated and the temperature value generated at that time.

    interface Temperature {
        [timestamp: string]: number;
    }

    Example:

    {
        "1663306125368": 27,
        "1663306125390": 21
    }

• Once the data starts coming into Firebase, keep fetching it in your app and plot following live charts:

  1. Realtime data of voltage and temperature in one graph.
  2. Average data per 3 minutes of voltage.
  3. Average data per 3 minutes of Temperature.

Initial Readings:

• Node-RED: Fundamentals - YouTube tutorial (To get overview about Node-RED)
• Node-RED: Creating your first flow
• Node-RED: Concepts
• Node-RED: Editor guide
• Node-RED: Core nodes
• Firebase & Node-RED: How to integrate?

Prerequisite

Control plot exercise