Questions tagged [mqtt]
For questions regarding the MQTT messaging protocol.
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Import data from sensor into node-red
I’m doing a uni assignment on Iot, and we are doing a soil moisture system with a water pump. One stipulation is that we need to use Node-Red.
List of components
*MCP3008 8-channel ADC
Raspberry Pi 4
*...
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1
answer
48
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Send publications between two Raspberry Pis in different countries
I am looking to start a project where I can establish a communication between two RPis worldwide, basically to have a small distance relationship gadget (e.g. When i press a button on my RPi, the ...
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umqtt.simple returning Error: [Errno 103] ECONNABORTED when publishing to mosquitto broker on windows 10 [closed]
My problem:
When attempting to send sensor data from Pico W using umqtt.simple to a Windows machine on my network running mosquitto, I can connect to the network but not to the mosquitto broker. I ...
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Raspberry Pi actively refusing connection
I'm using Eclipse's Paho MQTT library to stream DAQ data to a PC.
It all works fine using the cloud based Eclipse test broker over WiFi. Unfortunately my application will be in a place where there is ...
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raspberry pico, circuitpython and how to receive mqtt feeds reliably while showing time on pico
I am building a clock using rpi pico, max7219 and wiznet5k.
I am trying to incorporate mqtt functionality, in order to show important short messages to the max7219 every now and then.
I have run into ...
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Install aquarea2mqtt on Raspberry Pi
Im new on Linux/Raspberry Pi and I have some problem with installing program from a file. Can You help me with that?
I need this project implemented in my Home Assistant (to view my heat pomp)
https://...
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How to set up communication between two Raspberry Pi without internet [closed]
I was trying to learn how to set up communication between two raspberry pi in close proximity in a remote area without a router. I am new to raspberry pi and started trying to figure out MQTT/...
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Run Blynk server, Mosquitto and Node-Red on RasPi Zero?
Never used a pi before so I'm not sure how powerful they are/how much can they run at the same time. (Yes, I obviously know that it depends on what you're running). I was wondering, is there a good ...
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which version mqttfx for installation on RPI 4
I want to install mqttfx on my RPI 4 (Buster) What is the right version and where can I download? Which java is necessary?
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Openssl error while installing paho-mqtt python package
I am trying to install paho-mqtt python library using below command:
sudo pip3 install paho-mqtt
But I am getting below openssl error:
Looking in indexes: https://pypi.org/simple, https://www.piwheels....
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Redirecting Traffic to local mqtt server
I am really confuse about how to redirect.
I have 2 WLANs, one use to connect to the router(wln0) and one the I use as AP(wlan1).
My aim is to redirect traffic from one client connected to the AP that ...
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broken apt update due to change of sources.list
pi@raspberrypi:~ $ sudo apt update
Get 1http://archive.raspberrypi.org/debian buster InRelease [32.6 kB]
Get:2 http://raspbian.raspberrypi.org/raspbian buster InRelease [15.0 kB] ...
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Cannot connect RabbitMQ server from client side
I followed this link to install RabbitMQ server on my Raspberry Pi 4.
I can see that RabbitMQ 3.7.8 and Erlang 21.2.6 are installed.
But I cannot connect to the server from a client (Mqtt Dash, ...
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Problem using MQTT: published message will publish but won't receive
I wrote this code for controlling gpio pins
everything is ok but i cant turn on or off gpio pins
message will publish but it will not turn on or off gpio pins
import paho.mqtt.client as mqtt
import ...
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How to publish results on the Web from local MQTT non-Internet network?
I'm making a project where I have a local no-Internet MQTT network (scheme below).
Devices (except for RPi 3B+) needs to work outside so I can't provide them Internet access. The purpose of RPi 3B+ ...
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Does RaspAP lock the file system?
Quick question to help stop me from losing my mind.
Does the standard install of RaspAP lock the file system to stop you from installing other services?
Step 1. RaspAP installed and working fine.
...
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Connection timed out error with MQTT connection with Raspberry Pi and ESP8266
When wanting to connect my raspberry pi to my esp8266 wirelessly through MQTT it gives a connection timed out error and I am not sure why. I have surfed throughout the internet and could not find ...
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Raspberry pi 4 Hostname always changing
I have a raspberry pi 4 with raspbian buster installed. I set the hostname using raspi-config to "myrpi". I can connect to it using ssh and it works fine. But after a few hours or so, the hostname ...
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Reliable temperature/humidity logging with Python and a DHT11
There are more than 100 questions on this site concerning DHT11 or DHT22 sensors and I have used these with Python and c code using various libraries.
None that I have tried seem to give reliable ...
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avahi, zeroconf, mdns + mqtt network
I am new to avahi. And I am not sure how to build a dns-like local area network where all devices can communicate over a mqtt gateway.
I am probably wrong. But it seems to me I want to have a unique ...
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Using Pi as an intermediary between 2 LANs
I have one raspberry pi which is running Hassio (Home automation stuff). Normally I would just connect the devices I wanted to automate to home LAN but the problem is my wifi SSID & Password might ...
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Understanding why .service is failing to start
I'm new to the Raspberry Pi, but have gotten mosquitto to work & a similar mosquitto service running on one pi, but when I try running it on another Pi I encounter an error. For context, the ...
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Permision denied error using paho mqtt and Adafruit 32x32 led matrix
I am writing to you because I have the following problem: I have generated a code that allows controlling a 32x32 RGB led matrix through mqtt (AWS IoTCore) using a RPi Zero W with an Adafruit RGB ...
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Unzip libwebsockets-1.22-chrome26-firefox18.tar.gz
I am trying to install libwebsockets into my RPi.
I used the wget http://git.warmcat.com/cgi-bin/cgit/libwebsockets/snapshot/libwebsockets-1.3-chrome37-firefox30.tar.gz
to download the file.
but ...
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Connecting Computer without Internet to raspberry with Ethernet and send Information via MQTT
I'm trying to connect a Pc without internet with a Ethernet Cable to my Raspberry and want to send informations from the Computer to the Raspberry via MQTT. I searched trough the internet but ...
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MQTT connection to broker
Hello I would like to configure paho mqtt but I am having trouble to get it to work properly. I am trying to connect my raspberry to external server where broker is up and running. Port and IP are ...
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Mosquitto log directory gets deleted
I have mosquitto MQTT broker installed on my raspberry (raspbian-stretch).
Logs are stored in /var/log/mosquitto. The raspberry pi was now running for some days an the /var/log/mosquitto directory was ...
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Unable to SSH after modifying /etc/rc.local
I am attempting to have a program load on boot and have successfully achieved my desired function by modifying the /etc/rc.local file and adding the following line -
(sleep 15; python /home/pi/...
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VNC: how to manage a fleet of RPi?
I've to manage 50 Raspberry Pis remotely, e.g. via VNC over the web. The RPis are behind a router, so I can't access them by IP.
I'm looking for something like a self-hosted TeamViewer.
The desired ...
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Both local network and enterprise wifi connection on pi 3 running stretch
I am currently trying to build a monitor system with rpi, running stretch image, and a esp8266 nodemcu 1.0. I want to connect them using MQTT via a local network on a router. The Rpi is also connected ...
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mqtt on rpi zero w
I have rpi zero w system with below spec.
system specifications:
micro SD card slot, a mini HDMI port, two micro USB ports (one for power, one for USB), and 512MB of RAM. It has a single-core 700 MHz ...
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How to determine signal strength from an esp8266 module and a Rasberry Pi
I am trying to write a python script which will determine which of two esp8266 modules is closest to my raspberry pi.
My setup is as followed: I am using a Raspberry pi 3 with the raspbian operating ...
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Does there exist an mqtt client that works with python 3.5 on raspbian stretch?
I have been using the paho-mqtt client successfully with python 2.7 on raspbian stretch, but I have a need to use python 3.5 on a new project and paho-mqtt does not appear to install or build for that ...
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How to upgrade Mosquitto MQTT to the latest version?
Right now I have 1.3.4 Mosquitto Version installed from the repository on my PI. Current version is 1.4.15. So, how do I go about upgrading my Mosquitto MQTT to the latest version on my PI? I looked ...
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How to collect data from server to LibreOffice Calc
I have Mosquitto and Node-Red installed on my Pi 3. I want to be able to log the data into a spreadsheet of some sort. Is there a way to do this with Calc or a spreadsheet of some sort on the Pi? The ...
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How to fix Python argument error
I have a little python script I got from here. It listens for MQTT messages and plays a .wav file when a topic is published to. However, I get this error when the script is run:
TypeError: ...
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Trying to autorun Paho MQTT client script on boot up
I am running a Paho MQTT client on my raspberry pi (Stretch OS). This script recieves MQTT messages from a publisher script and then stores the data in a SQL database. As I added client.loop_forever() ...
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Paho MQTT: Error during autorun
I am trying to run a Python script on startup.
I followed this guide from Instructibles on setting up a cron job.
It returns the following error in the logs:
File "IoTTest.py", line 58, in <...
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Cant solve dependency issues with Raspberry Pi 3 (raspbian stretch) and MQTT/IBM-Watson
I've been trying to fix this problem for 3 straight days now and I gets no love on the issue. I'm trying to install mosquito and IBM Watson On my Raspberry Pi 3 and there's an issue with the raspbian ...
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Raspberry pi 3 connect to wi fi but can't connect to internet
I use "Raspbian jessie" on my raspberry, and I have configure it to connect to my wi-fi, but the strange thing is when I try to send data with Mqtt, I have this error :
MqttException (0) - java.net....
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mosquitto running as service does not work but manually does
if I run mosquitto manually mosquitto
i can connect to it and everything works perfectly
but if I run mosquitto as a service
sudo service mosquitto start
then it doesen't respond and nothing works ...
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MQTT TLS not working in Raspberry Pi3
Has anybody got MQTT with TLS working in Pi3 ? If so, please help me to fix my problem.I am using MQTT 1.4 version.
I did following steps-
I generated both client and server cert files as per https:/...
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What is my MQTT Ip Adress?
I installed the Mosquitto MQTT on my Pi and I want to test it on my Windows via Putty.
What is my MQTT server IP address and port ?
I tried ifconfig but it shows:
inet addr : as hex like fe80::...
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Sending JSON data to Amazon MQTT via GSM module
I want to send some JSON data to an MQTT topic on Amazon IOT. I can send using the Raspberr Pi WiFi adapter, but I want to send using any GSM module. Is there any way or advice on how to do this?
...
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Problem with version MQTT
I am not a linux person. I know enough to break things.
I have a pi, MQTT is working perfectly on that I set up all though I do not remember the exact steps (probably a lot of unneeded ones included)....
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