Azure Digital Twins

Azure Digital Twins is a platform that provides organizations with the foundation they need to create the next generation of IoT solutions. With Azure Digital Twins, you can virtually replicate the physical world by modeling the relationships between people, places, and devices in a special intelligence graph. You can use predefined data schema that are aligned to a solution’s domain-specific needs and that can accelerate and simplify it’s creation. You can query data in the context of a space rather than from disparate sensors. And you can build solutions that scale and replicate across multiple tenants.

More details are available in the Azure Digital Twins documentation. If you have a technical issue, please open a post on the developer forums through Stack Overflow.

  1. IOT Hub connection string - Azure Digital Twin

    I am doing some POC on Azure Digital Twin. So i am using some DT samples available on GitHub by azure. But those samples require IOT Hub connection string to enter. But i am not able to find the IOT hub connection string any where in Azure Digital Twin.

    for example, see this following line:

    IoT Hub connection string has to be set to system environment variable IOTHUBCONNECTIONSTRING

    How can i get this connection string, i can have device connection string but i can not have iot hub connection string.

    I want to ask is there any way…

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  2. I get the following error related to IoT Hub resource creation: "error": "Cannot establish connection using the connectionString provided.

    I've run this example a couple of times and now I am trying to modify the spaces, devices and sensors. IoT Hub resource creation fails and I get the following error when I call GET resources API:
    "error": "Cannot establish connection using the connectionString provided. EndpointName:customer-eventhub, exceptionMessage:An error occurred during communication with 'N/A'. Check the connection information, then retry. If you contact a support representative please include this correlation identifier: nnnnnnnn, timestamp: 2020-01-03 21:51:45Z, errorcode: IH400116.".

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  3. We are service integrators, would like to understand how the spacial maps are created, say the Map of Building

    We are service integrators, would like to understand how the spacial maps are created, say the Map of Building

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  4. Support for building the Azure Digital Twin special model from the existing automation systems.

    Support for building the Azure Digital Twin special model from the existing automation systems which are based on Industry standard like ISA95, ISA106, AutomationML

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  5. Digital Twin service creation flow needs to check for name collisions

    If you pick an obviously used name like "Twins", the service creation flow gives it a green check mark and lets you continue, but when you look at the status later you see deployment failed:

    {
    "code": "DeploymentFailed",
    "message": "At least one resource deployment operation failed. Please list deployment operations for details. Please see https://aka.ms/arm-debug for usage details.",
    "details": [

    {
    
    "code": "BadRequest",
    "message": "{\r\n \"code\": \"BadRequest\",\r\n \"message\": \"Service 'Twins' is already in use. Please choose a different name.\",\r\n \"details\": {\r\n \"code\": 400\r\n }\r\n}"
    }

    ]
    }

    This should be verified during creation, just like all other services.

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  6. IotHub Device Configuration should allow device twin path to be properties.tags

    it should be possible to create a device configuration with device twin properties containing certain tags

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  7. Will Digital Twins support MSAL tokens?

    Will Digital Twins support MSAL tokens? (i.e. Azure AD 2.0)

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  8. Please fix the paging for Devices

    The paging for Devices is broken: the pagination is applied BEFORE the query filter, so unless your desired results are in the "$top" X items, you won't get them.

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