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Questions tagged [kaa]

Kaa is a 100% open-source (Apache 2.0) middleware platform for rapid development of IoT applications and connected products.

Kaa offers a holistic approach for implementing rich communication, control, and interoperation capabilities into connected products and smart devices. On top of this, powerful back-end functionality of Kaa greatly speeds up IoT product development, allowing vendors to concentrate on maximizing their product’s unique value to the consumer. Kaa IoT platform is comprised of the server component and the endpoint SDK that is integrated into client applications.

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293 questions
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HTTP POST request-GSM Arduino

I've MKR GSM 1400 with sim and antenna, I want to send data to the KAA cloud by HTTP POST request. By using cURL I've succeded to send data to the cloud using thise code curl --location --request POST…
Timor Bader
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Using the kaa server, How to save the data from endpoints and how to fetch the data from mongoDB

I am using the kaa server for Data collections,How to save the data from endpoints and how to fetch the data from mongoDB for objective-c. My idea is using kaa server to save the values in mongoDB and retrieve.
kunthsam madhuveerasatish
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Kaa Data Collection on Request, Not Loop

I'm doing Kaa project. First, i have used Data Collection demo and then do some modification to my sensor. The data is send to platform every seconds(i can configure it). And now, i want to create some service which if i send request(using ulfius…
Ardyan Lawrence
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Kaa SDK API for C#/.Net

Is there a Kaa SDK for C# out-there? The kaaproject.com don't seem to support C#(.Net, but maybe there is someone alternative that allows me to build something in .Net that can behave like a device (kaa endpoint); Meaning sending messages (kaa data…
Carlberg
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Visualize IoT Data With Kaa and MongoDB Compass

I followed this tutorial https://dzone.com/articles/visualize-iot-data-with-kaa-and-mongodb-compass but I have a problem at the "Visualizing Logs in MongoDB Compass" step. I can't be succesful to connect to the host. Message error is MongoDB not…
Gian
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E/DefaultBootstrapChannel: Failed to receive operation servers list {}

I have deployed kaa on AWS but whenever i try run sample project the it is showing error: E/DefaultBootstrapChannel: Failed to receive operation servers list {} …
Uma Shankar Pathak
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Kaa sandbox building failed with binary demo application

I try download binary demo application from Kaa sandbox. Eventually, I am faced with: ‌BUILD FAILED This is a "build exception" from Kaa sandbox: Is this problem fixed with the Kaa 1.0.0 Banana Beach ?! Thanks, Kaa IoT team.
M. Asiyaban
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How to create devuser on a Kaa single Linux node

Description: I try with Kaa components on a single Linux node instead of Kaa sandbox; and I want to create a devuser with devuser role ; but on a single Linux node not a default devuser role for create developer user and or tenant admin. What…
M. Asiyaban
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Kaa sandbox demo application running infinitely & data not storing in Mongo DB?

So I was able to run the demo application as described in http://kaaproject.github.io/kaa/docs/v0.10.0/Programming-guide/Your-first-Kaa-application/#sample-client-application But the application would not stop running and I have to manually stop…
keon6
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Kaa Project : ERROR o.s.web.context.ContextLoader and other error

I follow the steps from https://kaaproject.github.io/kaa/docs/v0.10.0/Administration-guide/System-installation/Single-node-installation/ The last command is $ cat /var/log/kaa/* | grep ERROR and the error occur 2560-07-13 16:20:00,333 [main]…
Miya Miyu
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CMake File Error

I have been trying to complete and compile the sdk code on the raspberry pi 3 model that I have, but have been unsuccessful at figuring out the error that is below. Please let me know if anyone has had this error before and if you have some way to…
Dulfy02
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Does kaaproject.org have any solution to support udp transport between endpoint and operation server?

From the open source code of AbstractKaaClient.java below, i'm sure kaaproject supports TCP protocol between endpoint and kaa server. KaaDataChannel operationsChannel = new DefaultOperationTcpChannel( kaaClientState, failoverManager,…
pizza
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Occasional error o.k.k.s.common.zk.ControlNodeTracker - Unknown Error on KAA server

To give you the background, we are running kaa server on ubuntu in combination with MongoDB and have Endpoints attached to it (max 10). Apparently I am seeing following error way too frequently on our server and this makes our Kaa client (C client)…
PoonamG
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How is Kaa different from Kura?

I am a student who just started working on a research project, which is to compare Kaa with Eclipse Kura. I don't have any knowledge about IoT before working this project, so I got really lost and had no idea how to compare them. Hope someone can…
Phoebe
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Actor Gateway for Kaa Server - Java based

I am using KAA iOT server to connect my hardware with cloud. I have implemeted MQTT protocol in hardware and need to implement Actor Gateway or some other solution to enable communication between hardware and cloud. I am unable to find any guide on…
Ali Jawad
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