# Latest

**URL:** https://discourse.nodered.org/latest.md?page=1203

[Latest](https://discourse.nodered.org/latest.md) · [Categories](https://discourse.nodered.org/categories.md) · [Tags](https://discourse.nodered.org/tags.md)

**Page:** 1204

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## [Remote Access to NR Dashboard](https://discourse.nodered.org/t/remote-access-to-nr-dashboard/17687)

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**Author:** [@pinode](https://discourse.nodered.org/u/pinode)\
**Replies:** 3\
**Last updated:** [8 November 2019 19:12 UTC](https://discourse.nodered.org/t/remote-access-to-nr-dashboard/17687 "2019-11-08T19:12:40Z")

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I'm looking to access my NR Dashboard on a R-Pi from anywhere, when I'm away form home. I'm considering using either Ngrok or Serveo. Any advice from users as to which might be best. I also note that whenever I want to …

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## [Conversion hex to BigInt node red](https://discourse.nodered.org/t/conversion-hex-to-bigint-node-red/17684)

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**Author:** [@Meng](https://discourse.nodered.org/u/Meng)\
**Replies:** 1\
**Last updated:** [8 November 2019 16:42 UTC](https://discourse.nodered.org/t/conversion-hex-to-bigint-node-red/17684 "2019-11-08T16:42:07Z")

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I imported BigInter.js to the functionGlobalContext of node-red, however when I use var maximumByte = BigInt("FF", 16); (for bigInt the function is not known) it gives the following error SyntaxError: Cannot convert F…

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## [Troubleshooting a custom node using logging](https://discourse.nodered.org/t/troubleshooting-a-custom-node-using-logging/17296)

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**Author:** [@BartButenaers](https://discourse.nodered.org/u/BartButenaers)\
**Replies:** 2\
**Last updated:** [8 November 2019 16:16 UTC](https://discourse.nodered.org/t/troubleshooting-a-custom-node-using-logging/17296 "2019-11-08T16:16:35Z")

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Hi folks, I got a question about my node-red-contrib-interval-length node, which measures the time interval between consecutive input messages. In the config screen you can specify in which output message field that me…

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## [UI control can't be triggered at Nodered start](https://discourse.nodered.org/t/ui-control-cant-be-triggered-at-nodered-start/17679)

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**Author:** [@Charlotte](https://discourse.nodered.org/u/Charlotte)\
**Replies:** 1\
**Last updated:** [8 November 2019 14:32 UTC](https://discourse.nodered.org/t/ui-control-cant-be-triggered-at-nodered-start/17679 "2019-11-08T14:32:19Z")

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Hi, I have a dashboard tab where I want to show or hide some groups as soon as Node red start, depending on the content of a file. I'm using UI control for this. I observed that this is working very well if triggered …

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## [Problem with HTTP Request Node](https://discourse.nodered.org/t/problem-with-http-request-node/17680)

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**Author:** [@pcgopher](https://discourse.nodered.org/u/pcgopher)\
**Replies:** 0\
**Last updated:** [8 November 2019 14:24 UTC](https://discourse.nodered.org/t/problem-with-http-request-node/17680 "2019-11-08T14:24:43Z")

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Hello, I'm running Node-RED on a Windows 10 device and set up a flow to control an ADAM relay module from Advantech. I'm using an HTTP Request node to connect to the ADAM module, but I'm not getting back a response. I'v…

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## [Base64 to image](https://discourse.nodered.org/t/base64-to-image/17677)

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**Author:** [@sakshanjsr](https://discourse.nodered.org/u/sakshanjsr)\
**Replies:** 1\
**Last updated:** [8 November 2019 13:00 UTC](https://discourse.nodered.org/t/base64-to-image/17677 "2019-11-08T13:00:04Z")

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I am trying to convert base64 to image and display it on dashboard. But getting the error which says : Error: ENAMETOOLONG: name too long What could be the possible solution for the same?

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## [Node-Red Version 1.0 on BeagleBone](https://discourse.nodered.org/t/node-red-version-1-0-on-beaglebone/17633)

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**Author:** [@MJR](https://discourse.nodered.org/u/MJR)\
**Replies:** 7\
**Last updated:** [8 November 2019 12:51 UTC](https://discourse.nodered.org/t/node-red-version-1-0-on-beaglebone/17633 "2019-11-08T12:51:54Z")

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Hi there, I'm running Node-Red on a couple of BeagleBone boards (Black and Green). I have just setup a Green with the latest EMMC flasher image and decided to run the upgrade command given on the "Running on BeagleBone …

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## [General Node Red behavior?](https://discourse.nodered.org/t/general-node-red-behavior/17588)

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**Author:** [@NikoG](https://discourse.nodered.org/u/NikoG)\
**Replies:** 5\
**Last updated:** [8 November 2019 10:28 UTC](https://discourse.nodered.org/t/general-node-red-behavior/17588 "2019-11-08T10:28:30Z")

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Hello, I'm currently using Node Red to Create a complex application which involes many seperate Node-Lines in one Flow and the use of many Context Variables. For that I have to understand how Node Red processes a Flow …

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## [Inject node - context change trigger](https://discourse.nodered.org/t/inject-node-context-change-trigger/17668)

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**Author:** [@bakman2](https://discourse.nodered.org/u/bakman2)\
**Replies:** 5\
**Last updated:** [8 November 2019 10:27 UTC](https://discourse.nodered.org/t/inject-node-context-change-trigger/17668 "2019-11-08T10:27:32Z")

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I read a topic about detecting context changes and I understand this may be quite involved. Perhaps a more "simple" thought; Would it be possible for the inject node to detect flow/global changes and emit upon change (…

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## [Wanted to create database](https://discourse.nodered.org/t/wanted-to-create-database/17591)

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**Author:** [@pranavthakkar](https://discourse.nodered.org/u/pranavthakkar)\
**Replies:** 16\
**Last updated:** [8 November 2019 09:09 UTC](https://discourse.nodered.org/t/wanted-to-create-database/17591 "2019-11-08T09:09:37Z")

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Hi there , I want to dump a data (at this moment single data) (i'm new to database) in mysql or postgresql(which needs lots of work like docker or something) can any one explains how to start with working on database?? …

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## [Starting node-red in debug mode in ubuntu- how to](https://discourse.nodered.org/t/starting-node-red-in-debug-mode-in-ubuntu-how-to/17662)

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**Author:** [@uma](https://discourse.nodered.org/u/uma)\
**Replies:** 2\
**Last updated:** [8 November 2019 09:05 UTC](https://discourse.nodered.org/t/starting-node-red-in-debug-mode-in-ubuntu-how-to/17662 "2019-11-08T09:05:45Z")

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In windows, i would simply add '--inspect' as an argument to node in C:\\Users\<username\>\\AppData\\Roaming\\npm\\node-red.cmd. I am unable to find the shell script in ubuntu- executing 'which node-red' in my ubuntu instance g…

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## [Node-Red Connection Lost](https://discourse.nodered.org/t/node-red-connection-lost/1724)

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**Author:** [@dedynobre](https://discourse.nodered.org/u/dedynobre)\
**Replies:** 39\
**Last updated:** [8 November 2019 07:17 UTC](https://discourse.nodered.org/t/node-red-connection-lost/1724 "2019-11-08T07:17:52Z")

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Olá pessoal! Na medida que vou mexendo vou no node-red mas gosto de usar. Não sei é porque estou adicionando mais componentes mas fato é que constantemente ele fica aparecendo a mensagem; Connection lost. Isto está ger…

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## [Installing custom nodes from git repo](https://discourse.nodered.org/t/installing-custom-nodes-from-git-repo/17657)

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**Author:** [@sharique.hasan](https://discourse.nodered.org/u/sharique.hasan)\
**Replies:** 2\
**Last updated:** [8 November 2019 07:10 UTC](https://discourse.nodered.org/t/installing-custom-nodes-from-git-repo/17657 "2019-11-08T07:10:20Z")

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we have AI solutions. where we have different nodes involving camera feed and object-detection custom build. So now we need to add them to our node-red instance. I was looking at this API https://nodered.org/docs/api/adm…

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## [timer picker dashboard for Schedex](https://discourse.nodered.org/t/timer-picker-dashboard-for-schedex/5222)

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**Author:** [@kachlf](https://discourse.nodered.org/u/kachlf)\
**Replies:** 9\
**Last updated:** [8 November 2019 03:41 UTC](https://discourse.nodered.org/t/timer-picker-dashboard-for-schedex/5222 "2019-11-08T03:41:34Z")

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I have a function that takes input from dashboard text input as a time selection and it calculates hours and minutes, and it sets other variables and returns the msg object to the Schedex node but it's not setting the ti…

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## [Help with my flow: generating an email from array](https://discourse.nodered.org/t/help-with-my-flow-generating-an-email-from-array/17346)

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**Author:** [@lsadow](https://discourse.nodered.org/u/lsadow)\
**Replies:** 12\
**Last updated:** [7 November 2019 22:11 UTC](https://discourse.nodered.org/t/help-with-my-flow-generating-an-email-from-array/17346 "2019-11-07T22:11:58Z")

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Hi, I am new to node red and JavaScript. I would really appreciate help with a task I need to get working. I am running node red on an Opto 22 groov AR-1 and on the same network I have an Opto 22 Pac controller. I am usi…

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## [What should I do if I set the x-axis of the chart with the information entered as text?](https://discourse.nodered.org/t/what-should-i-do-if-i-set-the-x-axis-of-the-chart-with-the-information-entered-as-text/17431)

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**Author:** [@newsky40](https://discourse.nodered.org/u/newsky40)\
**Replies:** 2\
**Last updated:** [7 November 2019 21:57 UTC](https://discourse.nodered.org/t/what-should-i-do-if-i-set-the-x-axis-of-the-chart-with-the-information-entered-as-text/17431 "2019-11-07T21:57:57Z")

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I want to get x-axis information as text (eg 'HH: mm: ss') and set it as the x-axis of the chart. The x-axis setting item is custom and its contents are set to moment.format (msg.payload) or msg.paload. However, node-red…

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## [Node-RED scope, multi-threading and limitations](https://discourse.nodered.org/t/node-red-scope-multi-threading-and-limitations/214)

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**Author:** [@tree-frog](https://discourse.nodered.org/u/tree-frog)\
**Replies:** 16\
**Last updated:** [7 November 2019 19:23 UTC](https://discourse.nodered.org/t/node-red-scope-multi-threading-and-limitations/214 "2019-11-07T19:23:13Z")

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I’m an Electrical Engineer and familiar with C#, VB, PLC coding of many types. I have an application on our site that is written in C++ and it has interfaces with PLC’s via RSLinx and OPC Servers of different brands. T…

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## [Redirect HTTP requests to /index.html for React app](https://discourse.nodered.org/t/redirect-http-requests-to-index-html-for-react-app/17634)

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**Author:** [@episensor](https://discourse.nodered.org/u/episensor)\
**Replies:** 3\
**Last updated:** [7 November 2019 19:22 UTC](https://discourse.nodered.org/t/redirect-http-requests-to-index-html-for-react-app/17634 "2019-11-07T19:22:08Z")

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Hi All, If Node-RED is used to host a single page React webapp as static content at a top level domain, with an api running at /api, is it possible to redirect all non-API requests back to /index.html so they can be pro…

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## [Back to previous version NR](https://discourse.nodered.org/t/back-to-previous-version-nr/17642)

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**Author:** [@Soft4](https://discourse.nodered.org/u/Soft4)\
**Replies:** 3\
**Last updated:** [7 November 2019 19:05 UTC](https://discourse.nodered.org/t/back-to-previous-version-nr/17642 "2019-11-07T19:05:57Z")

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I have installed version 1.0.2, but I have to go back to the previous version (0.20.?) Of NR. I've been searching the forum for a while but can't find it. Do I have to add / adjust anything to the command? npm install -…

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## [Sending e-mail does not work (node-red-node-email)](https://discourse.nodered.org/t/sending-e-mail-does-not-work-node-red-node-email/17604)

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**Author:** [@bummzulu](https://discourse.nodered.org/u/bummzulu)\
**Replies:** 1\
**Last updated:** [7 November 2019 18:13 UTC](https://discourse.nodered.org/t/sending-e-mail-does-not-work-node-red-node-email/17604 "2019-11-07T18:13:10Z")

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Hello, I have upgraded from 0.19 to the latest version of node red v1.0.2. Since then sending e-mails over gmail does not work anymore. \[ { "id": "22a29086.083818", "type": "e-mail", "z": "…

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## [Serial node problem](https://discourse.nodered.org/t/serial-node-problem/17481)

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**Author:** [@iungo](https://discourse.nodered.org/u/iungo)\
**Replies:** 15\
**Last updated:** [7 November 2019 17:54 UTC](https://discourse.nodered.org/t/serial-node-problem/17481 "2019-11-07T17:54:42Z")

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I have some problems with using the serial node. It sends data w/o any problem, but able to receive data only in request mode. I want to connect the device, which sends data to serial w/o any request. Maybe somebody k…

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## [Announce: node-red-contrib-ui-heatmap (beta release)](https://discourse.nodered.org/t/announce-node-red-contrib-ui-heatmap-beta-release/8125)

<div class="topic-metadata">

**Author:** [@BartButenaers](https://discourse.nodered.org/u/BartButenaers)\
**Replies:** 105\
**Last updated:** [7 November 2019 16:39 UTC](https://discourse.nodered.org/t/announce-node-red-contrib-ui-heatmap-beta-release/8125 "2019-11-07T16:39:01Z")

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Hi folks, Damn, I got distracted again from my planning. This time by an interesting question about heat maps (i.e. temperature maps): see discussion. P.S. It would be nice if somebody could assist @janek in the above…

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## [Cronplus timer and GPIO](https://discourse.nodered.org/t/cronplus-timer-and-gpio/17407)

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**Author:** [@fralac](https://discourse.nodered.org/u/fralac)\
**Replies:** 14\
**Last updated:** [7 November 2019 16:42 UTC](https://discourse.nodered.org/t/cronplus-timer-and-gpio/17407 "2019-11-07T16:42:59Z")

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A month ago about a month ago I started a led on/off project. At the end of this project I started another one that concerns a timer (cron-plus) that would guide the gpio but without success. I created my dashboard but I…

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## [Using python script to read Wiiboard data using bluetooth](https://discourse.nodered.org/t/using-python-script-to-read-wiiboard-data-using-bluetooth/17600)

<div class="topic-metadata">

**Author:** [@YLM](https://discourse.nodered.org/u/YLM)\
**Replies:** 7\
**Last updated:** [7 November 2019 16:37 UTC](https://discourse.nodered.org/t/using-python-script-to-read-wiiboard-data-using-bluetooth/17600 "2019-11-07T16:37:28Z")

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Hi, I have a python script to read the data of the Wiiboard (it's works correctly if I run the python code from the terminal). I'd like to run the same thing in Note-red, so I have done a simple flow \[{"id":"e7d70765…

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## [UI Template doest response on html attribute](https://discourse.nodered.org/t/ui-template-doest-response-on-html-attribute/17637)

<div class="topic-metadata">

**Author:** [@Henjoe](https://discourse.nodered.org/u/Henjoe)\
**Replies:** 1\
**Last updated:** [7 November 2019 15:41 UTC](https://discourse.nodered.org/t/ui-template-doest-response-on-html-attribute/17637 "2019-11-07T15:41:47Z")

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Hello I have this simple HTML code under UI template. I want to change the color of msg.payload text , how ever it does not change? I dont know what is wrong with my code. Thanks!

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## [And logic is not working](https://discourse.nodered.org/t/and-logic-is-not-working/17619)

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**Author:** [@pranavthakkar](https://discourse.nodered.org/u/pranavthakkar)\
**Replies:** 14\
**Last updated:** [7 November 2019 13:32 UTC](https://discourse.nodered.org/t/and-logic-is-not-working/17619 "2019-11-07T13:32:16Z")

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Hi I'm using blynk write node where when i press button it changes from 0 to 1 vice versa and also the other inject node which is in 1 but the and logic is not giving me true value when both are 1. blynk property is…

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## [Node-red with docker rfxtrx usb transreceiver disconnects](https://discourse.nodered.org/t/node-red-with-docker-rfxtrx-usb-transreceiver-disconnects/15924)

<div class="topic-metadata">

**Author:** [@Mapa0402](https://discourse.nodered.org/u/Mapa0402)\
**Replies:** 2\
**Last updated:** [7 November 2019 13:09 UTC](https://discourse.nodered.org/t/node-red-with-docker-rfxtrx-usb-transreceiver-disconnects/15924 "2019-11-07T13:09:50Z")

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Hi, I have a problem with the rfxtrx mapping to the USB-transreceiver. It works good most of the time but after running sometimes 24h and sometimes 3-4 days it gets suddenly disconnected. I'm using docker and the nodere…

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## [Import and display a text/csv file in Node-RED dashboard](https://discourse.nodered.org/t/import-and-display-a-text-csv-file-in-node-red-dashboard/17622)

<div class="topic-metadata">

**Author:** [@Jude.Robise](https://discourse.nodered.org/u/Jude.Robise)\
**Replies:** 8\
**Last updated:** [7 November 2019 10:12 UTC](https://discourse.nodered.org/t/import-and-display-a-text-csv-file-in-node-red-dashboard/17622 "2019-11-07T10:12:06Z")

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How do I import and display a text or csv file into the node red dashboard? Display as in columns would be great.

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## [MQTT-In Not Connecting](https://discourse.nodered.org/t/mqtt-in-not-connecting/17325)

<div class="topic-metadata">

**Author:** [@robomike](https://discourse.nodered.org/u/robomike)\
**Replies:** 69\
**Last updated:** [7 November 2019 10:29 UTC](https://discourse.nodered.org/t/mqtt-in-not-connecting/17325 "2019-11-07T10:29:10Z")

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Hi All, I have the latest npm node-red version, embedded into an express application. When I run node-red locally, or in a heroku instance , neither node-red instance mqtt-in connects. The node just is a constant disc…

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## [Configuration Node](https://discourse.nodered.org/t/configuration-node/17626)

<div class="topic-metadata">

**Author:** [@MisterDraegus](https://discourse.nodered.org/u/MisterDraegus)\
**Replies:** 2\
**Last updated:** [7 November 2019 09:56 UTC](https://discourse.nodered.org/t/configuration-node/17626 "2019-11-07T09:56:24Z")

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Hello, I am currently working on a project and was wondering if it is possible to alter the information within a configuration node with an export/import. This would be a great help to be able to change this information…

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