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Raspberry Pi 2, 2 of n - The Pi as an IoT message broker

by Mike Hankey

Configuring the Raspberry Pi as an MQTT message broker using Mosquitto.

Stock Explorer: Using Pub/Sub for Request/Response

by Kel_

Building a financial stock explorer app using open-source emitter publish/subscribe, Go and Javascript.

How to Install Home Assistant Container on Windows and Publish an MQTT Message

by Sean Ewington

In this article, I will show you how to install Home Assistant Container on Windows, using Docker and Portainer, get it working with Agent DVR, and send an MQTT message from Agent DVR using CodeProject.AI Server to detect a person.

Using Amazon Web Services (AWS) IoT with Intel® IoT Devices and Gateways

by Intel

This article provides general guidelines for connecting any Intel® Internet of Things (IoT) devices (that is, devices that support Intel microcontrollers, such as the Intel® Edison board and the Intel® Curie™ Compute Module) and Intel gateways to the Amazon Web Servives (AWS) IoT platform.

Latest Articles

How to Install Home Assistant Container on Windows and Publish an MQTT Message

by Sean Ewington

In this article, I will show you how to install Home Assistant Container on Windows, using Docker and Portainer, get it working with Agent DVR, and send an MQTT message from Agent DVR using CodeProject.AI Server to detect a person.

Stock Explorer: Using Pub/Sub for Request/Response

by Kel_

Building a financial stock explorer app using open-source emitter publish/subscribe, Go and Javascript.

Tracking Online Presence of Devices with Emitter for IoT, Mobile or Web

by Kel_

Demonstrates how you can track online presence of devices or users using emitter.io platform

Intel Edison Based Plant Monitoring and Watering System for Agro-IoT with Matlab Driven Real Time Data Analytics over ThingSpeak Channel

by Grasshopper.iics, Moumita Das

Agricultural field monitoring and control is also possible using IoT sensor network

All Articles

Mqtt

Raspberry Pi 2, 2 of n - The Pi as an IoT message broker

17 Jun 2016 by Mike Hankey

Configuring the Raspberry Pi as an MQTT message broker using Mosquitto.

Stock Explorer: Using Pub/Sub for Request/Response

3 Dec 2016 by Kel_

Building a financial stock explorer app using open-source emitter publish/subscribe, Go and Javascript.

How to Install Home Assistant Container on Windows and Publish an MQTT Message

1 Feb 2023 by Sean Ewington

In this article, I will show you how to install Home Assistant Container on Windows, using Docker and Portainer, get it working with Agent DVR, and send an MQTT message from Agent DVR using CodeProject.AI Server to detect a person.

artificial-intelligence

Using Amazon Web Services (AWS) IoT with Intel® IoT Devices and Gateways

20 Jun 2016 by Intel

This article provides general guidelines for connecting any Intel® Internet of Things (IoT) devices (that is, devices that support Intel microcontrollers, such as the Intel® Edison board and the Intel® Curie™ Compute Module) and Intel gateways to the Amazon Web Servives (AWS) IoT platform.

machine-learning

Tracking Online Presence of Devices with Emitter for IoT, Mobile or Web

22 Aug 2016 by Kel_

Demonstrates how you can track online presence of devices or users using emitter.io platform

Using Microsoft Azure IoT Suite with Intel® IoT Devices and Gateways

20 Jun 2016 by Intel

This article provides general guidelines for connecting any Intel Internet of Things (IoT) devices (that is, devices that support Intel microcontrollers like the Intel® Edison board and the Intel® Curie™ Compute Module) and Intel® IoT Gateways to the Microsoft Azure IoT Suite.

machine-learning

Mosquitto-PHP library in raspberry and windows

3 Jun 2016 by hasan hadi

I resolve this problemthis information to install mosquittolib with php in raspberrywget http://repo.mosquitto.org/debian/mosquitto-repo.gpg.keysudo apt-key add mosquitto-repo.gpg.keycd /etc/apt/sources.list.d/sudo wget...

Unable to receive the updated publish messages from mqtt broker in windows service

21 Dec 2017 by Matt Comb

Make sure in your startup code for the windows service that you are keeping a reference of any key objects (e.g. control classes) so that they don't get immediately disposed again once the scope leaves the start event.

Connecting to Amazon Web Services (AWS) IoT using MQTT

17 May 2016 by Intel

This article provides a step-by-step guide to show you how to set up a connection to Amazon Web Services (AWS) IoT using MQTT, as well as command and code samples for additional setup and ease of use.

How to create mqtt client to publish/subscribe on web application(ASP.NET)?

25 Dec 2016 by Member 11859517

hello,I am using HiveMQ broker to publish and subscribe. so I created wpf application to get the message it working fine.and same thing I tried with ASP.net But it not working. while debugging I am able to get the data but not displaying it on form. Is there any other way to do this on web...

Web application in MVC 5 with MQTT background/scheduled tasks

13 Jun 2017 by Faris Karcic

Hello, so I'm junior programmer and I'm pretty much having hard time to figure this out by myself. I'm creating IoT web application based on MVC 5, with Code First database approach which does next things: - Communicate with sensors over MQTT protocol (mosquitto broker) - Shows values and some...

entity-framework

How to incorporate traffic parrot related to MQ in C# application?

15 Apr 2018 by ranio

I want to incorporate traffic parrot related to MQ in c# application. Currently I am using MQ interface and connect with the credentials as configured. After which put the request and want to get the response using traffic parrot . What I have tried: private void btnConnect_Click(object...

How to avoid MQ exception of 2035 while connecting via MQ explorer in C#?

17 Apr 2018 by ranio

I am getting MQ exception of 2035 while connecting via MQ Explorer in c#. I connected using MQ Queue Manager,Queue, Server Channel and Client Channel,Connection Name etc and created client and server instances using MQ Explorer 7.5 Version. I am getting error code 2035 showing that is...

How to prevent application from closing after multiple publish received?

8 Jun 2018 by Jochen Arndt

This can't be answered based on the posted code because that is incomplete. You should at least check for exceptions and report them to know where and when the application terminates and to get meaningful error messages. If that does not help you have to run it within a debugger. Read also the...

No output of printf on terminal when using makefile

17 Aug 2018 by Member 13952559

My Makefile: HEADERS = headers.h macros.h main.h socket.h main.o : main.c main.h cc -c main.c socket.o : socket.c headers.h macros.h cc -c socket.c main.c #include "main.h" main() { printf("%s\n","Connect_Socket Start"); Connect_Socket(IP_ADDRESS, PORT); printf("%s\n","Connect_Socket...

No output of printf on terminal when using makefile

17 Aug 2018 by OriginalGriff

Ata guess - and without your computer to hand that's all it can be - you don't get the output because the app is too busy connecting the socket to update the display. Try adding a user input after the printf and see what happens.

No output of printf on terminal when using makefile

17 Aug 2018 by Jochen Arndt

Executing make will build the target according to the specifed rules. But it will not execute the created application. To do that after a successful build do it like you have done with manually compiling: type the name of the executable at the shell prompt ./mqtt_c8y

Help with MQTT library .NET

5 Mar 2019 by MadMyche

Haven't use any of the libraries so I cannot vouch for it; but this is 2 clicks away from Google results for MQTT library C# M2Mqtt & GnatMQ | MQTT Client Library & Broker for .Net platform[^]

MQTT - how to create simple for C#

4 Nov 2019 by OriginalGriff

Google is your friend: Be nice and visit him often. He can answer questions a lot more quickly than posting them here... A very quick search using your subject as the search term gave over 100,000 hits: create simple MQTT with C - Google Search[^] In future, please try to do at least basic...

MQTT - how to create simple for C#

4 Nov 2019 by RickZeeland

Here is a nice article: https://dzone.com/articles/mqtt-publishing-and-subscribing-messages-to-mqtt-b[^]

MQTT - how to create simple for C#

5 Nov 2019 by Eliatrope

Hello, try this library GitHub - eclipse/paho.mqtt.m2mqtt[^]

How to use shell variables in MQTT

8 Jun 2021 by Stefen20000

Hi, I am new to shell scripting and MQTT. I need to publish a `JSON file` using `MQTT`. We can do it by storing the JSON contents in a `shell variable` and then using it in MQTT publish command. But it is not working for me. Please help me out...

How to use shell variables in MQTT

8 Jun 2021 by QuantumPlumber

I think the outer enclosing set of double quotes in your var1=.... statement might need to be single quotes (I assume the triple-quotes are just there for show and not what you actually typed). I have no familiarity with mosquitto but have had a...

My mqtt client is not able to connect with mqtt broker

4 Aug 2021 by OriginalGriff

Um ... are you sure about that IP address? 127.0.0.1 is the loopback IP address also called "localhost". The address is used to establish an IP connection to the same machine or computer being used by the end-user. So it's unlikely to be the one...

How do i...how to display individual element from json in Python

10 Aug 2021 by Digital World

I am trying to display the single element of json data on screen and this data comes from hivemq MQTT. When I was tried this part in python it was not working but when I tried to display all data on screen at that time it was working and...

How do i...how to display individual element from json in Python

10 Aug 2021 by Richard MacCutchan

See json — JSON encoder and decoder — Python 3.9.6 documentation[^]

How do I connect line bot to mqtt?

29 Jan 2024 by JC 2024

I want to use line bot and mqtt to control the light. I want to send a message to line bot, then line bot will determine whether it is on or off. After that, line bot will send a command to mqtt, then it can control the light. The problem is that...

Intel Edison Based Plant Monitoring and Watering System for Agro-IoT with Matlab Driven Real Time Data Analytics over ThingSpeak Channel

6 Aug 2016 by Grasshopper.iics, Moumita Das

Agricultural field monitoring and control is also possible using IoT sensor network

Using the IBM Watson IoT Platform with Intel® IoT Devices and Gateways

20 Jun 2016 by Intel

When you connect Internet of Things (IoT) devices (devices that support Intel microcontrollers such as the Intel® Edison board, Intel® Curie™ Compute Module, and Intel® IoT gateways) to the IBM Watson* IoT Platform, you can rapidly build IoT apps that realize your IoT use case.

machine-learning

Connecting to IBM Bluemix Internet of Things using MQTT

17 May 2016 by Intel

This article provides a step-by-step guide to show you how to set up a connection to IBM Bluemix using MQTT, as well as command and code samples for additional setup and ease of use.

Mosquitto-PHP library in raspberry and windows

3 Jun 2016 by hasan hadi

HII install PHP client for MQTT using Mosquitto-PHPLibrary in raspberry mosquitto php library/[^]after that create pub.php in /var/www/html/mqtt when write in browser http://210.201.4.120/mqtt/pup.php and no see any dataI then tried$mosquitto_pub -h localhost -t "/mqtt" -m...

Unable to receive the updated publish messages from mqtt broker in windows service

21 Dec 2017 by Member 11790928

I am running a windows service which is subscribing for a "XYZ" topic to a MQTT broker. Service also contains MessagePublishReceived Event which is logging the received message from Mqtt Broker. I am able to run this windows service but the problem i am facing is the MessagePublishReceived event...

How to prevent application from closing after multiple publish received?

8 Jun 2018 by Member 11790928

I have created the console application which subscribes to multiple topics to the MQTT Broker. I have registered MqttMsgPublishedReceived even which triggers whenever there is a new data on the subscribed topic. The application is running properly for a single subscription. But when I tried to...

Help with MQTT library .NET

4 May 2020 by Roman Gaisin

Please help! Is there any MQTT library (not MQTTDotNet - it doesnt work) for VB.Net or C#.Net ? What I have tried: MQTTDotNet doesn't work. I tried to use it with mqtt cloud server and custom server, every time i had an exeption with connection error to server as mqtt:\\. With tcp:\\ program...

Help with MQTT library .NET

6 May 2020 by Bessem Bousselmi

I have written an example code vb.net with all the basic features MQTT Client using M2Mqtt library MQTTBasic[^] Hope it is useful to everyone

My mqtt client is not able to connect with mqtt broker

4 Aug 2021 by Mohammed Khalifa 2021

I have done socket programming in python for my TCP based device now I want to send data to mqtt broker from this socket program so I tried to do my program like this but I am not able to connect to the broker can anyone help me to find out what...