Dashboard - No data found for every telemetry

Stephan Scholz 20 Reputation points
2024-04-03T15:14:07.01+00:00

I have connected TTN to Azure IoT Central. Devices are synced and created from the TTN. However, there is "No data found" from telemetry after i added visuals to the dashboard. I have checked the data format and the name of the telemetry data. I am happy about any support.Screenshot 2024-04-03 171011

Screenshot 2024-04-03 170754

Screenshot 2024-04-03 170827

Azure IoT Central
Azure IoT Central
An Azure hosted internet of things (IoT) application platform.
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  1. Sander van de Velde 28,236 Reputation points MVP
    2024-04-03T17:20:02.8533333+00:00

    Hello @Stephan Scholz,

    welcome to this moderated Azure community forum.

    You constructed a DTDL description of a messages that looks like this:

    {
      "CO2": x,
      "IAC": y
      ...
    }
    

    The TTN message that arrived is much more complex and starts at the "decoded_payload" JSON element.

    IoT Central does not know anything about the nested message, it wants to map the complete incoming message.

    So you either simplify the message send to the IoT Central to only the "decoded_payload" body or you extend the DTDL model so it eventually implements the "decoded_payload" body.


    If the response helped, do "Accept Answer". If it doesn't work, please let us know the progress. All community members with similar issues will benefit by doing so. Your contribution is highly appreciated.

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