# Latest

**URL:** https://discourse.nodered.org/latest.md?page=57

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

**Page:** 58

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## [Problem installing node-red-contrib-aedes](https://discourse.nodered.org/t/problem-installing-node-red-contrib-aedes/98511)

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**Author:** [@raffaele](https://discourse.nodered.org/u/raffaele)\
**Replies:** 6\
**Last updated:** [5 August 2025 15:54 UTC](https://discourse.nodered.org/t/problem-installing-node-red-contrib-aedes/98511 "2025-08-05T15:54:34Z")

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Hi All, I had problems on flowfuse when I try to install node-red-contrib-aedes from Palette Manager. On Logs I see following errors: \[node-red-contrib-aedes/aedes-mqtt-broker\] Error: Cannot find module 'webidl-conver…

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## [\[uibuilder tip\] Node-RED as a web development server](https://discourse.nodered.org/t/uibuilder-tip-node-red-as-a-web-development-server/58463)

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**Author:** [@TotallyInformation](https://discourse.nodered.org/u/TotallyInformation)\
**Replies:** 5\
**Last updated:** [5 August 2025 13:15 UTC](https://discourse.nodered.org/t/uibuilder-tip-node-red-as-a-web-development-server/58463 "2025-08-05T13:15:10Z")

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Hi all, quick tip for folk using uibuilder. If you want to do some rapid development of your front-end UI, you probably want something that will reload your page whenever you make a change. This is commonly referred to …

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## [Node-red-contrib-alexa-remote2-applestrudel 5.0.52 ko](https://discourse.nodered.org/t/node-red-contrib-alexa-remote2-applestrudel-5-0-52-ko/98275)

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**Author:** [@franz](https://discourse.nodered.org/u/franz)\
**Replies:** 5\
**Last updated:** [5 August 2025 09:04 UTC](https://discourse.nodered.org/t/node-red-contrib-alexa-remote2-applestrudel-5-0-52-ko/98275 "2025-08-05T09:04:30Z")

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I have node-red-contrib-alexa-remote2-applestrudel 5.0.52 installed on nodered 4.0.9 in docker. Since yesterday it no longer receives voice commands, it warns me vocally for automations but I can't issue commands. Does a…

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## [CSS to set currently selected tab on v2 tab layout](https://discourse.nodered.org/t/css-to-set-currently-selected-tab-on-v2-tab-layout/98499)

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**Author:** [@iiLaw](https://discourse.nodered.org/u/iiLaw)\
**Replies:** 6\
**Last updated:** [5 August 2025 08:44 UTC](https://discourse.nodered.org/t/css-to-set-currently-selected-tab-on-v2-tab-layout/98499 "2025-08-05T08:44:36Z")

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Apologies if this has been asked. Has anyone worked out how to apply a custom CSS to show the currently selected tab in a v2 tab layout? Currently there is no way to no what tab your on.

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## [Erlang-RED - Erlang backed Node-RED](https://discourse.nodered.org/t/erlang-red-erlang-backed-node-red/96458)

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**Author:** [@gregorius](https://discourse.nodered.org/u/gregorius)\
**Replies:** 8\
**Last updated:** [5 August 2025 08:15 UTC](https://discourse.nodered.org/t/erlang-red-erlang-backed-node-red/96458 "2025-08-05T08:15:43Z")

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Hi There, Inspired by @mdkrieg and his py-RED project, I have created Erlang-RED - what can be better than combining two extremely niche programming paradigms - visual flow based programming meets tail recursion and fun…

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## [How to change the UI\_chart series line color in dashboard 2 by message payload?](https://discourse.nodered.org/t/how-to-change-the-ui-chart-series-line-color-in-dashboard-2-by-message-payload/98493)

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**Author:** [@Kang](https://discourse.nodered.org/u/Kang)\
**Replies:** 11\
**Last updated:** [5 August 2025 08:06 UTC](https://discourse.nodered.org/t/how-to-change-the-ui-chart-series-line-color-in-dashboard-2-by-message-payload/98493 "2025-08-05T08:06:36Z")

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Hi, sir I found that there is no message access for me to change the line series color in UI\_CHART? Do you have any idea how to change the line color by message dynamically ? Here is my message payload and UI\_CHART se…

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## [How to use DuckDB in Node-RED(just in node-red function)](https://discourse.nodered.org/t/how-to-use-duckdb-in-node-red-just-in-node-red-function/98487)

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**Author:** [@hyxdxhb1231](https://discourse.nodered.org/u/hyxdxhb1231)\
**Replies:** 6\
**Last updated:** [5 August 2025 05:31 UTC](https://discourse.nodered.org/t/how-to-use-duckdb-in-node-red-just-in-node-red-function/98487 "2025-08-05T05:31:35Z")

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Hi guys, the existing DuckDB node in Node-RED is broken. How can I do the same with a function node? Here is an example, but when i try it again, the Node-RED will broken down. The log information said that \[error\] Err…

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## [Problem changing button colors](https://discourse.nodered.org/t/problem-changing-button-colors/98474)

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**Author:** [@kburns2](https://discourse.nodered.org/u/kburns2)\
**Replies:** 24\
**Last updated:** [4 August 2025 15:21 UTC](https://discourse.nodered.org/t/problem-changing-button-colors/98474 "2025-08-04T15:21:20Z")

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Hello, I am running the latest version of Node Red. I am trying to create a control interface for a dust collection system for a wood shop. I have the basic functionality working well. I have a relay board HAT for a Ras…

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## [DB2: Migrating chart.js from DB1](https://discourse.nodered.org/t/db2-migrating-chart-js-from-db1/98421)

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**Author:** [@rakgupta](https://discourse.nodered.org/u/rakgupta)\
**Replies:** 8\
**Last updated:** [4 August 2025 15:04 UTC](https://discourse.nodered.org/t/db2-migrating-chart-js-from-db1/98421 "2025-08-04T15:04:19Z")

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Hi: I am migrating 3 charts (mixed - bar/line, stacked bar) from DB1 and I can’t get the first one to work (haven’t tried others). I was looking for examples using chart.js charts with DB2, but I could not find any. Are…

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## [Forum header illegible](https://discourse.nodered.org/t/forum-header-illegible/98495)

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**Author:** [@jbudd](https://discourse.nodered.org/u/jbudd)\
**Replies:** 6\
**Last updated:** [4 August 2025 14:58 UTC](https://discourse.nodered.org/t/forum-header-illegible/98495 "2025-08-04T14:58:39Z")

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When you first open a forum topic, the header is empty except for the hexagon logo. Scroll down a bit and suddenly it's populated with a slightly smaller hexagon, post title, category and tags I guess this may be…

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## [Payload Boolean message](https://discourse.nodered.org/t/payload-boolean-message/98498)

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**Author:** [@MarcoGaspar](https://discourse.nodered.org/u/MarcoGaspar)\
**Replies:** 3\
**Last updated:** [4 August 2025 13:51 UTC](https://discourse.nodered.org/t/payload-boolean-message/98498 "2025-08-04T13:51:52Z")

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How can i change the led colour by the true or false payload message?

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## [Customize markdown rendering in NR](https://discourse.nodered.org/t/customize-markdown-rendering-in-nr/98463)

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**Author:** [@duaw](https://discourse.nodered.org/u/duaw)\
**Replies:** 10\
**Last updated:** [4 August 2025 13:06 UTC](https://discourse.nodered.org/t/customize-markdown-rendering-in-nr/98463 "2025-08-04T13:06:18Z")

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Hi there! Is it (easily …) possible to set / modify how markdown is rendered in NR? I use Obsidian and like the bigger font for # Heading level 1 compared to ## Heading level 2 However, I prefer NR’s color for code an…

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## [Creating a config node on demand, import broken](https://discourse.nodered.org/t/creating-a-config-node-on-demand-import-broken/98188)

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**Author:** [@Chris927](https://discourse.nodered.org/u/Chris927)\
**Replies:** 12\
**Last updated:** [4 August 2025 10:44 UTC](https://discourse.nodered.org/t/creating-a-config-node-on-demand-import-broken/98188 "2025-08-04T10:44:23Z")

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Context: I'm trying to fix this regression for the Victron Venus OS, which is caused by a regression in node-red-contrib-victron. Note that this is not a node-red bug or regression. The issue is related to creating a c…

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## [Improved node documentation icon](https://discourse.nodered.org/t/improved-node-documentation-icon/98480)

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**Author:** [@Martin12](https://discourse.nodered.org/u/Martin12)\
**Replies:** 8\
**Last updated:** [4 August 2025 08:46 UTC](https://discourse.nodered.org/t/improved-node-documentation-icon/98480 "2025-08-04T08:46:39Z")

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First of all, I really like the new node documentation icon feature in v4.1.0. Finally it makes sense to actually use the description tab and write down some hints or comments in more complex nodes. :+1: :+1: To make th…

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## [Node-red-node-serialport: connection status - viewing](https://discourse.nodered.org/t/node-red-node-serialport-connection-status-viewing/98484)

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**Author:** [@rromele](https://discourse.nodered.org/u/rromele)\
**Replies:** 2\
**Last updated:** [4 August 2025 06:44 UTC](https://discourse.nodered.org/t/node-red-node-serialport-connection-status-viewing/98484 "2025-08-04T06:44:24Z")

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Hello, I am using the node 'node-red-node-serialport: serial-in / serial-out'. How can I extract the status value of the serial port reported below the node?

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## [Dynamically change class of a button in template node](https://discourse.nodered.org/t/dynamically-change-class-of-a-button-in-template-node/98482)

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**Author:** [@smanjunath211](https://discourse.nodered.org/u/smanjunath211)\
**Replies:** 1\
**Last updated:** [3 August 2025 16:17 UTC](https://discourse.nodered.org/t/dynamically-change-class-of-a-button-in-template-node/98482 "2025-08-03T16:17:23Z")

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\<template\> \<Teleport v-if="mounted" to="#app-bar-title"\> \<div width = "auto" class="btn-group"\> \<v-btn class='button1' @click="send({payload:'b2'})"\>Machines\</v-btn\> \<v-btn class='bu…

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## [🎉 Node-RED 4.1 Released](https://discourse.nodered.org/t/node-red-4-1-released/98364)

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**Author:** [@knolleary](https://discourse.nodered.org/u/knolleary)\
**Replies:** 20\
**Last updated:** [3 August 2025 14:47 UTC](https://discourse.nodered.org/t/node-red-4-1-released/98364 "2025-08-03T14:47:38Z")

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Node-RED 4.1 have been published and is now generally available! The release blog post is here: Version 4.1 released : Node-RED Thank you to everyone who contributed to this release.

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## [Node-red-contrib-openhab3 in Openhab 5](https://discourse.nodered.org/t/node-red-contrib-openhab3-in-openhab-5/98472)

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**Author:** [@llamich](https://discourse.nodered.org/u/llamich)\
**Replies:** 3\
**Last updated:** [3 August 2025 11:05 UTC](https://discourse.nodered.org/t/node-red-contrib-openhab3-in-openhab-5/98472 "2025-08-03T11:05:02Z")

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Good evening, I've been trying to get a new installation of openhab+node-red up and running for a couple of weeks. The problem arises when I start configuring the first openhab node and defining the controller. When I a…

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## [Pure fun with Alexa and Alexa Skills](https://discourse.nodered.org/t/pure-fun-with-alexa-and-alexa-skills/46867)

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**Author:** [@dynamicdave](https://discourse.nodered.org/u/dynamicdave)\
**Replies:** 158\
**Last updated:** [3 August 2025 08:00 UTC](https://discourse.nodered.org/t/pure-fun-with-alexa-and-alexa-skills/46867 "2025-08-03T08:00:01Z")

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Now the authentication problem with various Alexa nodes has been sorted I thought I'd try something new. I used BluePrints to create a Q&A skill called 'Give me a status report' then linked that in the flow below. I've…

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## [Looking for Freelancer / Transfer Node-red to another instance and combine new dev with homeassistant](https://discourse.nodered.org/t/looking-for-freelancer-transfer-node-red-to-another-instance-and-combine-new-dev-with-homeassistant/98325)

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**Author:** [@fraankkr](https://discourse.nodered.org/u/fraankkr)\
**Replies:** 6\
**Last updated:** [3 August 2025 05:58 UTC](https://discourse.nodered.org/t/looking-for-freelancer-transfer-node-red-to-another-instance-and-combine-new-dev-with-homeassistant/98325 "2025-08-03T05:58:26Z")

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Dear all, I^m looking for a freelancer that would help me to migrate certain nodes from an existing node-red instance to another and make it available under the new node-red server and combine this with homeassistant. A…

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## [TypeError: fg.convertPathToPattern is not a function](https://discourse.nodered.org/t/typeerror-fg-convertpathtopattern-is-not-a-function/98252)

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**Author:** [@milhouse1](https://discourse.nodered.org/u/milhouse1)\
**Replies:** 13\
**Last updated:** [2 August 2025 16:06 UTC](https://discourse.nodered.org/t/typeerror-fg-convertpathtopattern-is-not-a-function/98252 "2025-08-02T16:06:47Z")

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Versions: Node-RED: v4.0.9 Node.js: v20.19.4 node-red-contrib-uibuilder@7.4.3 Issue: I've had Node-RED running on Node.js v18 for a while now, with the last uibuilder update being 6.8.2 (if the file I'm looking at i…

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## [Advice on communication between multiple Node-RED instances (or external apps)](https://discourse.nodered.org/t/advice-on-communication-between-multiple-node-red-instances-or-external-apps/98455)

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**Author:** [@thalesmaoa](https://discourse.nodered.org/u/thalesmaoa)\
**Replies:** 10\
**Last updated:** [2 August 2025 15:34 UTC](https://discourse.nodered.org/t/advice-on-communication-between-multiple-node-red-instances-or-external-apps/98455 "2025-08-02T15:34:24Z")

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Hi everyone, Following some great suggestions here in the forum, I've been using MQTT for almost everything within Node-RED — and it's been working well in general. However, I recently ran into a challenge that I can’t…

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## [Single Page App in UIbuilder](https://discourse.nodered.org/t/single-page-app-in-uibuilder/98422)

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**Author:** [@Paul-Reed](https://discourse.nodered.org/u/Paul-Reed)\
**Replies:** 36\
**Last updated:** [2 August 2025 15:32 UTC](https://discourse.nodered.org/t/single-page-app-in-uibuilder/98422 "2025-08-02T15:32:47Z")

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I currently use 3 instances of UIbuilder, one for each page, however I’m seeing the shortcomings of this approach & trying to move to a SPA model instead. So far, my layout is like this; uibuilder/test/src ├── index.c…

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## [Upgrade to v4.1.0](https://discourse.nodered.org/t/upgrade-to-v4-1-0/98395)

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**Author:** [@Tany](https://discourse.nodered.org/u/Tany)\
**Replies:** 28\
**Last updated:** [2 August 2025 15:04 UTC](https://discourse.nodered.org/t/upgrade-to-v4-1-0/98395 "2025-08-02T15:04:40Z")

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Hi, Upgrade 4.0.9 to 4.1.0 done (npm) and apparently with success. The log shows - \[info\] Node.js version: v18.20.8, but i installed a while ago V22 for sake of ZigBee2MQTT. I am not really familiar with Linux. Is m…

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## [Android 8 Install](https://discourse.nodered.org/t/android-8-install/98428)

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**Author:** [@MarcoGaspar](https://discourse.nodered.org/u/MarcoGaspar)\
**Replies:** 7\
**Last updated:** [2 August 2025 15:03 UTC](https://discourse.nodered.org/t/android-8-install/98428 "2025-08-02T15:03:08Z")

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The cmd:npm i -g --unsafe-perm node-red give error

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## [Having NR check email - feasability and security questions](https://discourse.nodered.org/t/having-nr-check-email-feasability-and-security-questions/98442)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 28\
**Last updated:** [2 August 2025 10:54 UTC](https://discourse.nodered.org/t/having-nr-check-email-feasability-and-security-questions/98442 "2025-08-02T10:54:29Z")

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So I won't pretend this is without security issues. I have an understanding of it, but not sure I know the exact severity. I'm wanting to have a script that checks if there are any new emails in/on my account. Someone…

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## [Telegram sender](https://discourse.nodered.org/t/telegram-sender/98444)

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**Author:** [@Nodepushover](https://discourse.nodered.org/u/Nodepushover)\
**Replies:** 1\
**Last updated:** [2 August 2025 10:09 UTC](https://discourse.nodered.org/t/telegram-sender/98444 "2025-08-02T10:09:58Z")

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Dear All My telegram sender node always comes with Bot not initialized My telegram receiver works flawless, what can be the cause?, thanks in advance

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## [Not Strictly a Node-RED issue but Used as Data, nmap Problem Collecting Network Info](https://discourse.nodered.org/t/not-strictly-a-node-red-issue-but-used-as-data-nmap-problem-collecting-network-info/98424)

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**Author:** [@Buckskin](https://discourse.nodered.org/u/Buckskin)\
**Replies:** 9\
**Last updated:** [1 August 2025 22:08 UTC](https://discourse.nodered.org/t/not-strictly-a-node-red-issue-but-used-as-data-nmap-problem-collecting-network-info/98424 "2025-08-01T22:08:12Z")

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Some time ago @TotallyInformation published a flow to get the mac address, IO address etc of a network using nmap to collect the data. It seems that sometime in the intervening years nmap decided NOT to collect the mac a…

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## [ZWave isn't dead](https://discourse.nodered.org/t/zwave-isnt-dead/98456)

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**Author:** [@marcus-j-davies](https://discourse.nodered.org/u/marcus-j-davies)\
**Replies:** 0\
**Last updated:** [1 August 2025 20:48 UTC](https://discourse.nodered.org/t/zwave-isnt-dead/98456 "2025-08-01T20:48:53Z")

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Trust me! I was very lucky (and honoured) to be testing/debgguing this..... thing! It will be supported in my up coming Node RED Module release! V10 of my module has full support for it. that is all!

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## [Install dashboard1 and dashboard2 at the same time, how to activate dashboard2 in frontend](https://discourse.nodered.org/t/install-dashboard1-and-dashboard2-at-the-same-time-how-to-activate-dashboard2-in-frontend/98445)

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**Author:** [@Kang](https://discourse.nodered.org/u/Kang)\
**Replies:** 7\
**Last updated:** [1 August 2025 16:58 UTC](https://discourse.nodered.org/t/install-dashboard1-and-dashboard2-at-the-same-time-how-to-activate-dashboard2-in-frontend/98445 "2025-08-01T16:58:44Z")

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Hi, sir I have installed dashboard1 and dashboard 2 together in my Node-RED, pls see below picture for detail, and my node-red version is 3.1.11, and node-red-dashboard version is 3.6.5. Although I can edit the node an…

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