iot

问题 I would like to obtain all devices into my Azure IoT Hub system (connected, not connected, it doesn't matter). I've read the documentation about the system itself with no result but Get a list of devices from Azure IoT Hub has become obsolete. Is there any kind of query which let retrieve all devices associated to my system? 回答1: You can use the REST API Service - Query Iot Hub Payload: { "query": "SELECT deviceId FROM devices" } 来源： https://stackoverflow.com/questions/56965855/get-all

问题 I am using a Python client with paho-mqtt to publish in this specific topic of Google Cloud IoT: projects/my_project/topics/sm1 . My code is below, based on examples of the Google IoT documentation: import paho.mqtt.client as mqtt import ssl, random, jwt_maker from time import sleep root_ca = './../roots.pem' public_crt = './../my_cert.pem' private_key = './../my_pr.pem' mqtt_url = "mqtt.googleapis.com" mqtt_port = 8883 mqtt_topic = "/projects/my_project/topics/sm1" project_id = "my_project"

问题 To present my question I will simplify my example. I will connect a sprocket on a step motor and measure acceleration with an accelerometer. The data will be captured by using either an Arduino or Raspberry pi sensor setup. The measurements will then be stored in a cloud-based environment or somehow similar and be send to the CAD model (that's the idea). Basically what I would like to achieve is to: connect the movement of the step motor with the SW/CATIA/AutoCAD model (if the physical

问题 To present my question I will simplify my example. I will connect a sprocket on a step motor and measure acceleration with an accelerometer. The data will be captured by using either an Arduino or Raspberry pi sensor setup. The measurements will then be stored in a cloud-based environment or somehow similar and be send to the CAD model (that's the idea). Basically what I would like to achieve is to: connect the movement of the step motor with the SW/CATIA/AutoCAD model (if the physical

问题 To present my question I will simplify my example. I will connect a sprocket on a step motor and measure acceleration with an accelerometer. The data will be captured by using either an Arduino or Raspberry pi sensor setup. The measurements will then be stored in a cloud-based environment or somehow similar and be send to the CAD model (that's the idea). Basically what I would like to achieve is to: connect the movement of the step motor with the SW/CATIA/AutoCAD model (if the physical

问题 I have the following setup: Multiple modbus sensors 1 Gateway connected to these sensors via ModbusTCP. On this gateway, one Azure IoT Edge module is running (using the NodeJS SDK), that reads all values of each connected sensor Azure IoT Central for device management In IoT Central, I would like to represent each modbus sensor with a separate device template. This way, I can configure dashboards that are unique for each sensor. These sensor device templates should then be configured to be

问题 I have the following setup: Multiple modbus sensors 1 Gateway connected to these sensors via ModbusTCP. On this gateway, one Azure IoT Edge module is running (using the NodeJS SDK), that reads all values of each connected sensor Azure IoT Central for device management In IoT Central, I would like to represent each modbus sensor with a separate device template. This way, I can configure dashboards that are unique for each sensor. These sensor device templates should then be configured to be

问题 I have a virtual machine that is supposed to be the host, which can receive and send data. The first picture is the error that I'm getting on my main machine (from which I'm trying to send data from). The second picture is the mosquitto log on my virtual machine. Also I'm using the default config, which as far as I know can't cause these problems, at least from what I have seen from other examples. I have very little understanding on how all of this works, so any help is appreciated. What I

问题 I have a virtual machine that is supposed to be the host, which can receive and send data. The first picture is the error that I'm getting on my main machine (from which I'm trying to send data from). The second picture is the mosquitto log on my virtual machine. Also I'm using the default config, which as far as I know can't cause these problems, at least from what I have seen from other examples. I have very little understanding on how all of this works, so any help is appreciated. What I

问题 I have developed a module and built the image for arm64v8 architecture as my Edge device is running in Raspberry Pi 4. I got the file deployment.arm64v8.json in the config folder correctly. But when I right-click on the device in Visual Studio Code and select Create Deployment for Single Device, the modules are getting added, but one of the modules is showing Backoff state. What could be the problem here, and was strictly following this doc. I also tried restarting the services. Device