Category "mqtt"

Raspberry Pi as MQTT publisher and subscriber

I am trying to establish RPi as publisher and subscriber at the same time. I will do that in such way, that I will put subscriber.py and publisher.py as threads

How to get only one message from MQTT, when messages receiving in C#?

I developed simple IOT device using nodemcu module with 03 sensors. When device is connected, device sent sensor's data to mqtt broker as well. After I getting

Connect to AWS MQTT

Trying to connect to AWS IOT device from C# by using M2MQTT library : public void connect() { const string IotEndpoint = "a3cnel9bxxxxx-at

Microsoft Azure iot-hub: The measured senosor values sent via device to iot-hub cannot be read stored Json data

We are using a data acquisition system as a device and send some signals values via MQTT protocol into a container which is assigned to an iot-hub. The connecti

uPLibrary.Networking.M2Mqtt.MqttClient throwing CommunicationException and OutOfMemoryException

I am using uPLibrary.Networking.M2Mqtt to connect to MQTT broker. var telemetryClient = new uPLibrary.Networking.M2Mqtt.MqttClient( mqttBaseAddress, MqttSet

Cannot Autowiring Spring MQTT

Spring 2.5.3 and Java 1.8 I want to send a json data to a mqtt topic but i cannot autowiring my Interface and i'm getting null pointer exception when i try with

M2Mqtt in C# is not connected, doesn't give data

I have a project creating a websocket client side (Subscriber) to a MQTT publisher. I am quite new to C# and MQTT protocol. I follow some youtube video to make

Get Sensor value from complicated MQTT message - Nested object queries

I need to get the temperature and humidity values and store them into a AWS timestream table as values, so that i can use them in Grafana. How could i retrieve

How MQTT QoS token work in Paho MQTT C code?

I have a difficult to understand how token QoS work in Paho MQTT C code. My idea is that I want to read the PUBACK when using the QoS =1, for publisher to know

Service info.mqtt.android.service.MqttService has > leaked IntentReceiver

I keep having this error log when ever i toggle off a switch in my app. E/ActivityThread: Service info.mqtt.android.service.MqttService has leaked IntentReceiv

Python FastAPI backend get request path operation function access data saved outside of the function

I am quite new to FastAPI, so I have a question if it is possible to access data within the path operation function, which(data) is stored/generated outside of

MQTT client waits indefinitely during publish of message

I try to implement an asynchronous MQTT client with the paho library, that receives messages on topic "request", formulates a string and puts the response out o

MQTT message is not received because of object in object

Libraries: <PubSubClient.h> <ESP8266WiFi.h> "ArduinoJson.h" When I send this JSON, the message is received and I can do things with it: {"topic":"d

MQTT can`t connect to backend AWS IoT core

UPDATED: I am trying to connect to a backend (AWS IoT Core) as I am using a small wp77 with a busybox image running. When using the 8883 port the connection tim

How to handle mqtt disconnection on Node-RED?

I'm implementing a draft of a connection between 2 Raspberry and an Arduino, connected via mqtt. I'm working on Node-RED flows and I used mqtt nodes. As you can

Mqtt Android PahoClient Connection Issue

Hi I am using Android paho library for getting connect with an mqtt server. My app level Gradle side Code : implementation 'org.eclipse.paho:org.eclipse.paho.

Sparkplug B and BIRTH topics

I am working on a Sparkplug B SCADA Host, and hoping to understand how the Sparkplug B SCADA Host keeps up-to-date with the Sparkplug B EoN Nodes and Devices th

Sparkplug B and BIRTH topics

I am working on a Sparkplug B SCADA Host, and hoping to understand how the Sparkplug B SCADA Host keeps up-to-date with the Sparkplug B EoN Nodes and Devices th

How can I bring the PAHO/Eclipse MQTT Android Service into an Android Studio Project

I am simply not able to bring the PAHO / Eclipse MQTT Android Service into an Android Studio project. The PAHO documentation advises you to add this line to app

MQTT Subscriber to ThingsBoard broker in python

Situation: I have a python virtual sensor (a python program) that submits data via MQTT protocol to my device in ThingsBoard. I can visualize data on the dashbo