# Latest

**URL:** https://discourse.nodered.org/latest.md?no_subcategories=false&page=76

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

**Page:** 77

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## [Async registerType callback?](https://discourse.nodered.org/t/async-registertype-callback/97081)

<div class="topic-metadata">

**Author:** [@TotallyInformation](https://discourse.nodered.org/u/TotallyInformation)\
**Replies:** 8\
**Last updated:** [15 May 2025 20:21 UTC](https://discourse.nodered.org/t/async-registertype-callback/97081 "2025-05-15T20:21:48Z")

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I might be a bit thick today but I don't seem to be able to find any magic to allow the RED.nodes.registerType callback function to be an async function? I have a function call in it that I would ideally like to await a…

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## [How to give a Switch a Label](https://discourse.nodered.org/t/how-to-give-a-switch-a-label/97075)

<div class="topic-metadata">

**Author:** [@Naitsa](https://discourse.nodered.org/u/Naitsa)\
**Replies:** 1\
**Last updated:** [15 May 2025 15:28 UTC](https://discourse.nodered.org/t/how-to-give-a-switch-a-label/97075 "2025-05-15T15:28:15Z")

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I use a lot of Switches on my Dashboard, so using the usual Label would make it to full. My idea was to only show the Label with an on-hover effekt. But i have no clue how i could achieve that. Does anyone have prior e…

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## [Issues with deleting a node](https://discourse.nodered.org/t/issues-with-deleting-a-node/97078)

<div class="topic-metadata">

**Author:** [@joey\_ind](https://discourse.nodered.org/u/joey_ind)\
**Replies:** 3\
**Last updated:** [15 May 2025 11:38 UTC](https://discourse.nodered.org/t/issues-with-deleting-a-node/97078 "2025-05-15T11:38:55Z")

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Hello folks, I am facing an issue with deleting a node completely . I tried deleting the node (OPCUA) from the palette but it showed " in use" inspite of me removing it from the configuration settings. So I ran the unin…

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## [Serial request reconnect](https://discourse.nodered.org/t/serial-request-reconnect/97067)

<div class="topic-metadata">

**Author:** [@kxkayser](https://discourse.nodered.org/u/kxkayser)\
**Replies:** 1\
**Last updated:** [14 May 2025 16:52 UTC](https://discourse.nodered.org/t/serial-request-reconnect/97067 "2025-05-14T16:52:36Z")

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I have a flow which uses an inject node each 1 second to trigger a serial request from a USB device. If the device is connected to the node-red machine when I deploy the flow, it connects fine. If the device is not con…

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## [XML node 50 records max?](https://discourse.nodered.org/t/xml-node-50-records-max/97051)

<div class="topic-metadata">

**Author:** [@leftymuller](https://discourse.nodered.org/u/leftymuller)\
**Replies:** 17\
**Last updated:** [14 May 2025 14:10 UTC](https://discourse.nodered.org/t/xml-node-50-records-max/97051 "2025-05-14T14:10:31Z")

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Hello All, Ive been pulling some big data from an API and noticed that im only getting max 50 records is there a way around this or another xml node ?

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## [Select option help](https://discourse.nodered.org/t/select-option-help/97065)

<div class="topic-metadata">

**Author:** [@fares-31](https://discourse.nodered.org/u/fares-31)\
**Replies:** 1\
**Last updated:** [14 May 2025 14:07 UTC](https://discourse.nodered.org/t/select-option-help/97065 "2025-05-14T14:07:34Z")

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Well, I have this idea. I want to make a selection option. When I choose "living room," it displays the living room TV voltage gauge. So, I do this. I create a group on the same page that has the selection optio…

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## [Examples for read multiple values from OPCUA server with function node through node-red-contrib-opcua](https://discourse.nodered.org/t/examples-for-read-multiple-values-from-opcua-server-with-function-node-through-node-red-contrib-opcua/97059)

<div class="topic-metadata">

**Author:** [@RamaDevi](https://discourse.nodered.org/u/RamaDevi)\
**Replies:** 1\
**Last updated:** [14 May 2025 12:57 UTC](https://discourse.nodered.org/t/examples-for-read-multiple-values-from-opcua-server-with-function-node-through-node-red-contrib-opcua/97059 "2025-05-14T12:57:48Z")

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complete example for read multiple values from OPCUA server with function node-through node-red-contrib-opcua module

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## [Atmospheric pressure with Trend calculator](https://discourse.nodered.org/t/atmospheric-pressure-with-trend-calculator/97060)

<div class="topic-metadata">

**Author:** [@repho](https://discourse.nodered.org/u/repho)\
**Replies:** 2\
**Last updated:** [14 May 2025 09:23 UTC](https://discourse.nodered.org/t/atmospheric-pressure-with-trend-calculator/97060 "2025-05-14T09:23:00Z")

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I've been suggested to share my little project, so here it is. I have a atmospheric pressure sensor and wanted to get a little weather prediction on my dashboard: And here are the nodes used to get this: \[ {…

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## [Write Nodes using Vue 3 and Typescript](https://discourse.nodered.org/t/write-nodes-using-vue-3-and-typescript/97055)

<div class="topic-metadata">

**Author:** [@AllanOricil](https://discourse.nodered.org/u/AllanOricil)\
**Replies:** 3\
**Last updated:** [14 May 2025 08:15 UTC](https://discourse.nodered.org/t/write-nodes-using-vue-3-and-typescript/97055 "2025-05-14T08:15:52Z")

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Here's the initial draft of my framework for building Nodes using Vue 3 and TypeScript. I'd appreciate it if you could take a look and share your feedback. You can install the nodes in your Node-RED instance using the…

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## [Dashboard 2 Slider from center, like audio balance slider](https://discourse.nodered.org/t/dashboard-2-slider-from-center-like-audio-balance-slider/97003)

<div class="topic-metadata">

**Author:** [@repho](https://discourse.nodered.org/u/repho)\
**Replies:** 4\
**Last updated:** [14 May 2025 03:39 UTC](https://discourse.nodered.org/t/dashboard-2-slider-from-center-like-audio-balance-slider/97003 "2025-05-14T03:39:08Z")

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Hi, I'm new to NR and loving it so far. I would like to add a slider on my dashboard but I need it to work from center, like -10...0...10. Something like how a balance slider on a audio device works. It would need to fi…

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## [Sorry, but if you want a giggle. Programming memes](https://discourse.nodered.org/t/sorry-but-if-you-want-a-giggle-programming-memes/97058)

<div class="topic-metadata">

**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 0\
**Last updated:** [14 May 2025 00:11 UTC](https://discourse.nodered.org/t/sorry-but-if-you-want-a-giggle-programming-memes/97058 "2025-05-14T00:11:07Z")

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Programming memes Sorry, but sometimes you just have to stand back and laugh.

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## [NR 4.0.9 globalcontext problem/question](https://discourse.nodered.org/t/nr-4-0-9-globalcontext-problem-question/97057)

<div class="topic-metadata">

**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 2\
**Last updated:** [13 May 2025 23:04 UTC](https://discourse.nodered.org/t/nr-4-0-9-globalcontext-problem-question/97057 "2025-05-13T23:04:24Z")

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Yeah, the problem with running too many different versions of the same software. :cry: All my RasPis have names. NR access these by global.myDeviceName And there is a part of the settings.js file which needs to be s…

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## [Next problem I have with new machine. (Dashboards)](https://discourse.nodered.org/t/next-problem-i-have-with-new-machine-dashboards/97042)

<div class="topic-metadata">

**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 11\
**Last updated:** [13 May 2025 21:40 UTC](https://discourse.nodered.org/t/next-problem-i-have-with-new-machine-dashboards/97042 "2025-05-13T21:40:12Z")

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Ok, there is a way I can see, but it will be painful. I had have a machine and it was running.... Stretch and an early version of NR. I wanted to install a new bit of code, but time bit me in the bottom and I couldn't. …

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## [Sqlite database help](https://discourse.nodered.org/t/sqlite-database-help/97023)

<div class="topic-metadata">

**Author:** [@fares-31](https://discourse.nodered.org/u/fares-31)\
**Replies:** 3\
**Last updated:** [13 May 2025 19:35 UTC](https://discourse.nodered.org/t/sqlite-database-help/97023 "2025-05-13T19:35:14Z")

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hy, i need a help in this situation I have this topic which sends the voltage values ​​in real time and the type of msg.playload which is sent is "number", I do this function to transform the type to array to ins…

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## [What is the oldest version of node-red still running and working for you?](https://discourse.nodered.org/t/what-is-the-oldest-version-of-node-red-still-running-and-working-for-you/97044)

<div class="topic-metadata">

**Author:** [@wb666greene](https://discourse.nodered.org/u/wb666greene)\
**Replies:** 4\
**Last updated:** [13 May 2025 19:20 UTC](https://discourse.nodered.org/t/what-is-the-oldest-version-of-node-red-still-running-and-working-for-you/97044 "2025-05-13T19:20:54Z")

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Having been laid up for a while, I'm finally getting back to my projects and while going through some old things, like a Raspberry Pi3B+ running Raspbian "Stretch" OS, I got to thinking, what is the oldest version of nod…

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## [Siemens S7 plc connection status](https://discourse.nodered.org/t/siemens-s7-plc-connection-status/97033)

<div class="topic-metadata">

**Author:** [@TROJAN053](https://discourse.nodered.org/u/TROJAN053)\
**Replies:** 2\
**Last updated:** [13 May 2025 15:27 UTC](https://discourse.nodered.org/t/siemens-s7-plc-connection-status/97033 "2025-05-13T15:27:21Z")

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Hi, I want to capture the Siemens S7 PLC connection status in case of connection failure and generate some message in case of failure. I have tried using the status node but that not worked. Please help.

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## [Now to pass on a variable to a graphql](https://discourse.nodered.org/t/now-to-pass-on-a-variable-to-a-graphql/97053)

<div class="topic-metadata">

**Author:** [@horemansp](https://discourse.nodered.org/u/horemansp)\
**Replies:** 0\
**Last updated:** [13 May 2025 13:24 UTC](https://discourse.nodered.org/t/now-to-pass-on-a-variable-to-a-graphql/97053 "2025-05-13T13:24:59Z")

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I'm trying to pass on a variable to a GraphQL with the node-contrib-graphql. I looked at the documentation but don't understand how it works. (too much of a noob with graphQL I guess...) I'm trying to replace the date. …

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## [Idea: Add a node.js LTS check to Node-RED?](https://discourse.nodered.org/t/idea-add-a-node-js-lts-check-to-node-red/96980)

<div class="topic-metadata">

**Author:** [@TotallyInformation](https://discourse.nodered.org/u/TotallyInformation)\
**Replies:** 11\
**Last updated:** [13 May 2025 11:59 UTC](https://discourse.nodered.org/t/idea-add-a-node-js-lts-check-to-node-red/96980 "2025-05-13T11:59:17Z")

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Was thinking recently about node.js version management for Node-RED. While it is pinned to a particular major version, that is really only the "minimum" version that should be used. This may leave users thinking that th…

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## [NR 4.0 edit theme colour scheme?](https://discourse.nodered.org/t/nr-4-0-edit-theme-colour-scheme/97041)

<div class="topic-metadata">

**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 2\
**Last updated:** [13 May 2025 11:03 UTC](https://discourse.nodered.org/t/nr-4-0-edit-theme-colour-scheme/97041 "2025-05-13T11:03:08Z")

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Sorry folks, brain failure. I've just rebuilt a machine with bookworm and THE LATEST NR. (4.0.9) When it installed it asked me some nice questions which I thought would be applied. But the edit window is a bright whi…

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## [CSS Styling in Dashboard 2.0](https://discourse.nodered.org/t/css-styling-in-dashboard-2-0/97045)

<div class="topic-metadata">

**Author:** [@Naitsa](https://discourse.nodered.org/u/Naitsa)\
**Replies:** 9\
**Last updated:** [13 May 2025 08:54 UTC](https://discourse.nodered.org/t/css-styling-in-dashboard-2-0/97045 "2025-05-13T08:54:55Z")

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Hey there, i am new to Node-Red Dashboard 2.0. I am struggling to give my button the CSS-Class i want. Whe ni double click the Node to open the Properties and give a "Optional CSS-Class", nothing happends. When i look w…

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## [Help with how to get "speed test" results saved](https://discourse.nodered.org/t/help-with-how-to-get-speed-test-results-saved/96994)

<div class="topic-metadata">

**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 25\
**Last updated:** [13 May 2025 04:45 UTC](https://discourse.nodered.org/t/help-with-how-to-get-speed-test-results-saved/96994 "2025-05-13T04:45:46Z")

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(Ok, maybe dashboard but I want the mechanics more than the dressing) I'm guessing most countries have a speed test site that tests their down/up load speeds and given it to you in/on a nice screen. I'm wanting to see …

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## [What do you guys think about writting nodes using json schemas?](https://discourse.nodered.org/t/what-do-you-guys-think-about-writting-nodes-using-json-schemas/96936)

<div class="topic-metadata">

**Author:** [@AllanOricil](https://discourse.nodered.org/u/AllanOricil)\
**Replies:** 2\
**Last updated:** [12 May 2025 16:13 UTC](https://discourse.nodered.org/t/what-do-you-guys-think-about-writting-nodes-using-json-schemas/96936 "2025-05-12T16:13:05Z")

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The framework I'm creating uses json schemas (draft v7) as the source of truth for configs (defaults), credentials, input and outputs messages. This is the folder structure of a single node. This is an example of a N…

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## [How to get where a specific global variable is used?](https://discourse.nodered.org/t/how-to-get-where-a-specific-global-variable-is-used/97027)

<div class="topic-metadata">

**Author:** [@DenisCeleghin](https://discourse.nodered.org/u/DenisCeleghin)\
**Replies:** 12\
**Last updated:** [12 May 2025 15:31 UTC](https://discourse.nodered.org/t/how-to-get-where-a-specific-global-variable-is-used/97027 "2025-05-12T15:31:01Z")

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Hi to all, I'm rookie on Node-red variable. I'm using some specifics global variables. they are spred on several flows and I need to know where they are used in my flows. So, I wonder if there's a way to get where tho…

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## ['widget-action' messages set msg.topic to 'undefined' (updated)](https://discourse.nodered.org/t/widget-action-messages-set-msg-topic-to-undefined-updated/96683)

<div class="topic-metadata">

**Author:** [@omrid](https://discourse.nodered.org/u/omrid)\
**Replies:** 5\
**Last updated:** [12 May 2025 15:11 UTC](https://discourse.nodered.org/t/widget-action-messages-set-msg-topic-to-undefined-updated/96683 "2025-05-12T15:11:23Z")

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I have upgraded my dashboard-2 to v1.23.0. In my custom UI node, when I send messages as 'widget-action' (this.$socket.emit('widget-action', this.id, msg) ), their topic property is getting overrun and becomes undefined.…

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## [Node-red-contrib-bme680-rpi node error](https://discourse.nodered.org/t/node-red-contrib-bme680-rpi-node-error/97029)

<div class="topic-metadata">

**Author:** [@leeg77](https://discourse.nodered.org/u/leeg77)\
**Replies:** 1\
**Last updated:** [12 May 2025 13:52 UTC](https://discourse.nodered.org/t/node-red-contrib-bme680-rpi-node-error/97029 "2025-05-12T13:52:20Z")

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I have used this node previously a few years ago on another Raspberry Pi project and it worked flawlessly. I have just tried installing and I get the following error: "TypeError: Bme680 is not a constructor" I have d…

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## [Interesting article I found on the net. Home assistant - Node-RED](https://discourse.nodered.org/t/interesting-article-i-found-on-the-net-home-assistant-node-red/97024)

<div class="topic-metadata">

**Author:** [@smanjunath211](https://discourse.nodered.org/u/smanjunath211)\
**Replies:** 0\
**Last updated:** [12 May 2025 12:01 UTC](https://discourse.nodered.org/t/interesting-article-i-found-on-the-net-home-assistant-node-red/97024 "2025-05-12T12:01:44Z")

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## [Sizing of the UI Dashboard](https://discourse.nodered.org/t/sizing-of-the-ui-dashboard/96978)

<div class="topic-metadata">

**Author:** [@Naitsa](https://discourse.nodered.org/u/Naitsa)\
**Replies:** 8\
**Last updated:** [12 May 2025 11:11 UTC](https://discourse.nodered.org/t/sizing-of-the-ui-dashboard/96978 "2025-05-12T11:11:43Z")

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Hey there, i am quite new to NodeRed and have little to no experience. In my first project i want to give the UI-Group ("Home") 100% Width so it fills the screen, no matter the Width (and maybe height, too). The only t…

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## [Node-red version 4.09 no file access to my revolution pi directories](https://discourse.nodered.org/t/node-red-version-4-09-no-file-access-to-my-revolution-pi-directories/96971)

<div class="topic-metadata">

**Author:** [@tim26](https://discourse.nodered.org/u/tim26)\
**Replies:** 9\
**Last updated:** [12 May 2025 08:34 UTC](https://discourse.nodered.org/t/node-red-version-4-09-no-file-access-to-my-revolution-pi-directories/96971 "2025-05-12T08:34:58Z")

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Hi, I installed an existing and working node-red flow on a new revolution pi with node-red 4.09. The node-red creates using a pdfmake node a file on the pi. Now I allways get errors because node-red has no access to m…

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## [Streaming RTSP Video on Node-RED Dashboard with Media Source Extensions Support](https://discourse.nodered.org/t/streaming-rtsp-video-on-node-red-dashboard-with-media-source-extensions-support/97020)

<div class="topic-metadata">

**Author:** [@mszeta](https://discourse.nodered.org/u/mszeta)\
**Replies:** 0\
**Last updated:** [12 May 2025 07:41 UTC](https://discourse.nodered.org/t/streaming-rtsp-video-on-node-red-dashboard-with-media-source-extensions-support/97020 "2025-05-12T07:41:37Z")

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Hello, Is it possible to stream video from Node-red dashboard (rtsp, etc...)? Does Node-red dashboard support media source extensions? If not, is there any other way to use media source extensions? Thank you.

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## [Node red dashboard doesnt update any value](https://discourse.nodered.org/t/node-red-dashboard-doesnt-update-any-value/97017)

<div class="topic-metadata">

**Author:** [@Lostcat67](https://discourse.nodered.org/u/Lostcat67)\
**Replies:** 1\
**Last updated:** [12 May 2025 03:53 UTC](https://discourse.nodered.org/t/node-red-dashboard-doesnt-update-any-value/97017 "2025-05-12T03:53:24Z")

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Hi there. weird bug I ran into: Node red dashboard text doesnt display the text that recieves: I even tried a simple injection, but nothing. Also restarted my raspberry pi 4, but nothing. Any idea why this happens…

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