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Questions tagged [iot]

QUESTIONS MUST BE PROGRAMMING RELATED.. Use a more specific tag for your question instead, e.g. [wifi], [bluetooth], [c], [arduino]

The Internet of Things (IoT) is a novel paradigm where many of the objects that surround us will be connected to the Internet, these objects can be Radio-Frequency IDentification (RFID) tags, sensors, actuators, mobile phones, etc. and through unique addressing scheme, are able to interact with each other and cooperate with their neighbors to reach common goals.

While programming questions about Internet of Things are on-topic here, other questions should be asked on the new Internet of Things Stack Exchange site.

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If the question is not programming related then it may be on-topic at Raspberry Pi Stack Exchange, Internet of Things Stack Exchange or Unix & Linux Stack Exchange.

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Sending and receiving images via a socket

I have a C# desktop app. It connects to another PC on my network which is a UWP C# app. I am trying to send an image or 2 to my listening socket and to test this I get the listening socket to send me the image back. The trouble is that even though…
Andrew Simpson
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Deployment of individual nodes in Node-RED

Node-RED has very nice "single-click deployment" feature. Using this feature, node-red deploys all its nodes and flows very quickly. However, I would like to know - where flows and nodes ,we develop in Node-RED editor, are deployed when we click…
user-517752
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How to get alarms from Bacnet using c#

I am trying to access alarms from PLC which is running on Bacnet protocol. I am using Windows 10 IoT platform (running on RPI). I can read all Bacnet object "properties" such as event state, alarm etc but I need to get all alarms of all objects. I…
Jan Holešínský
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Azure IoT Hub - Receive Events from different Devices with multiple EventHubReceiver

I try to receive messages from Devices with the "EventHubReceiver" (Device2Cloud). Each device should have it's own, single receiver. It isn't a problem to create one single EventHubReceiver (per Partition) for all devices: string…
Franklin84
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How to program AllJoyn Explorer

I am trying to develop a UWP application using C# that will discover all AllJoyn producers on the network and create consumer objects for communicating with the devices(producers). It's going to be pretty much a generic consumer like the AllJoyn…
Kwaku Apeadu
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JSON response in the history REST call from bluemix iotf does not contain bookmark

I try to access the historian information from bluemix IoTF. The official documentation describes the REST call here: https://docs.internetofthings.ibmcloud.com/swagger/v0002.html#!/Historical_Event_Retrieval/get_historian So the result should be…
Ansgar Schmidt
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bluemix cannot login, stop/restart applications

I cannot stop/restart an sample program from http://m2m.demos.ibm.com/trafficsimulator.html. It gives the following errors: "BXNUI0018E: Instances for the 'undefined' application could not be retrieved". After I to refreshes the dashboard, I cannot…
askool
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Can't launch bluemix IOT foundation dashboard on MAC computer?

I tried use browser safari , firefox, Chrome, the dashboard is pending on loading something. I tried from Windows, the dashboard works fine. I launched the IOTF dashboard from bluemix portal after I login the system. I got from error message from…
Aaren
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Installing the Windows IoT Core Project Templates generates an exception when I create a new project on visual Studio 2015, OS Windows 7

Installing the Windows IoT Core Project Templates generates an exception when I create a new project on visual Studio 2015, OS Windows 7. The error message is "this template attempted to load component assembly…
Abdelkrim
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why does my web api client call not work in Raspberry Pi2 Iot

I have this code: private const string route = "/api/Print"; public bool Update(string header, string tc) { bool success = false; using (var client = new HttpClient()) { client.BaseAddress = new Uri("my uri"); …
Andrew Simpson
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NodeMCU and ESP8266: slow mqtt publish

I'm using esp8266 with the firmware produced with Marcel's NodeMCU custom builds http://frightanic.com/nodemcu-custom-build/ I tested the "dev" branch and the "master". I changed a little bit the "Connect to MQTT Broker" code found here…
Andrea De Gaetano
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Unable to retrieve historical events within specified time range from IBM IoT Foundation

I am trying to retrieve historical events within a certain time range using IoT Foundation's rest API . But if I specify optional start/end parameter of the API call, IoT Foundation doesn't recognize them as expected and returns the events within…
Yuhji Yamashita
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Bluemix IoT Foundation Environment Stopped Working

I noticed this afternoon that my Bluemix IoT Application was in the 'Unknown' state. When I mined into the app to see what the problem could be, I got the following pop-up: App staging failed in the buildpack compile phase I haven't made any changes…
robo
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MQTT client keeps disconnecting from Bluemix IOT Foundation

I just try to connect to my Bluemix IOT Foundation instance with a mosquitto mqtt client. I configured everything as described in https://docs.internetofthings.ibmcloud.com/messaging/devices.html. My python client connects but disconnect after a…
Ansgar Schmidt
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FI-WARE - How a beacon can send info to a POI Data Provider

I just started reading about FI-WARE, so this might be a very noob question. A beacon is basically a device that just uses bluetooth for pushing info about its position. How should it be connected to a generic Enabler, for instance a a POI Data…
eeadev
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