# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=39

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

**Page:** 40

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

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**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)

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**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)

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**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)

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**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)

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

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**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)

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

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**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)

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**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)

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**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)

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

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

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

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**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)

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**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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## [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)

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**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)

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**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)

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**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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## [How can I make my nrg cli become part of the OpenJs foundation?](https://discourse.nodered.org/t/how-can-i-make-my-nrg-cli-become-part-of-the-openjs-foundation/96986)

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**Author:** [@AllanOricil](https://discourse.nodered.org/u/AllanOricil)\
**Replies:** 2\
**Last updated:** [9 May 2025 15:42 UTC](https://discourse.nodered.org/t/how-can-i-make-my-nrg-cli-become-part-of-the-openjs-foundation/96986 "2025-05-09T15:42:03Z")

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I'm building the nrg framework mostly for curiosity and fun, but since I know how the world works, I would also like to use it for external validation and earn reputation/respect points. I would like someone from OpenJS …

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## [Error accessing GPIO chips: Permission denied](https://discourse.nodered.org/t/error-accessing-gpio-chips-permission-denied/96984)

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**Author:** [@Forhorse](https://discourse.nodered.org/u/Forhorse)\
**Replies:** 0\
**Last updated:** [9 May 2025 10:07 UTC](https://discourse.nodered.org/t/error-accessing-gpio-chips-permission-denied/96984 "2025-05-09T10:07:59Z")

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Hello, I'm trying to interact with the GPIOs of a Radxa Rock3A through Node-red. Node-Red is in a Docker container. According to what I found on the internet, node-red-contrib-libgpiod are the solution. The requireme…

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## [Extracting Time to set Relais to ON and OFF](https://discourse.nodered.org/t/extracting-time-to-set-relais-to-on-and-off/96921)

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**Author:** [@Learn](https://discourse.nodered.org/u/Learn)\
**Replies:** 11\
**Last updated:** [9 May 2025 06:31 UTC](https://discourse.nodered.org/t/extracting-time-to-set-relais-to-on-and-off/96921 "2025-05-09T06:31:36Z")

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Hello, I have a function node which gives me 4 different hours. I would like to switch on a relay during this time. I don't know how I can extract the time from the text and then convert it to an ON and OFF message. Doe…

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## [Cannot find name 'flow' (error 2304) and red squiggle under \`msg\`](https://discourse.nodered.org/t/cannot-find-name-flow-error-2304-and-red-squiggle-under-msg/96796)

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**Author:** [@xpxiong](https://discourse.nodered.org/u/xpxiong)\
**Replies:** 18\
**Last updated:** [9 May 2025 06:19 UTC](https://discourse.nodered.org/t/cannot-find-name-flow-error-2304-and-red-squiggle-under-msg/96796 "2025-05-09T06:19:25Z")

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When I write 'let data = flow.get("data")' in the function node, an error will be reported

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## [How to use the same button to turn the lights on/off in node red ](https://discourse.nodered.org/t/how-to-use-the-same-button-to-turn-the-lights-on-off-in-node-red/96968)

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**Author:** [@toShiba0101](https://discourse.nodered.org/u/toShiba0101)\
**Replies:** 7\
**Last updated:** [8 May 2025 12:55 UTC](https://discourse.nodered.org/t/how-to-use-the-same-button-to-turn-the-lights-on-off-in-node-red/96968 "2025-05-08T12:55:22Z")

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Hi, I came across a one small problem. I want to turn on/off the the light system with the same button with node red, but I don’t know how. My idea is to use toggle button but don’t know how to read/keep last used state.…

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## [Sorting by id flow (ID, CPU, TEMP)](https://discourse.nodered.org/t/sorting-by-id-flow-id-cpu-temp/96964)

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**Author:** [@schnre](https://discourse.nodered.org/u/schnre)\
**Replies:** 4\
**Last updated:** [8 May 2025 08:22 UTC](https://discourse.nodered.org/t/sorting-by-id-flow-id-cpu-temp/96964 "2025-05-08T08:22:17Z")

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I have an active debug that sends me messages (object) where inside I find Id, CPU and Temperature, now I have to sort the messages by ID (1, 2, 3) and I have to divide them into three different rooms.

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## [Node-red read thousands of data from db with s7](https://discourse.nodered.org/t/node-red-read-thousands-of-data-from-db-with-s7/96919)

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**Author:** [@Mustafa19077](https://discourse.nodered.org/u/Mustafa19077)\
**Replies:** 2\
**Last updated:** [8 May 2025 06:58 UTC](https://discourse.nodered.org/t/node-red-read-thousands-of-data-from-db-with-s7/96919 "2025-05-08T06:58:49Z")

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Hello Community, In my current project, I am reading thousands of data from plc db. For instance, i reads between 50-150 variables from just one db. Each variable is string\[18\]. I am connecting about 100 different db. 1…

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## [Accumulated time decreasing instead of increasing](https://discourse.nodered.org/t/accumulated-time-decreasing-instead-of-increasing/96916)

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**Author:** [@Dar](https://discourse.nodered.org/u/Dar)\
**Replies:** 6\
**Last updated:** [8 May 2025 06:26 UTC](https://discourse.nodered.org/t/accumulated-time-decreasing-instead-of-increasing/96916 "2025-05-08T06:26:41Z")

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Hello! I need some help, I have an issue where the minutes output is decreasing instead of increasing, my task is to display inside the dashboard the total runtime of the machine from 7 AM to 7PM but the total time for …

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## [Improving multiple, nested if-then-else statements](https://discourse.nodered.org/t/improving-multiple-nested-if-then-else-statements/96864)

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**Author:** [@ruffieuxh](https://discourse.nodered.org/u/ruffieuxh)\
**Replies:** 16\
**Last updated:** [7 May 2025 16:49 UTC](https://discourse.nodered.org/t/improving-multiple-nested-if-then-else-statements/96864 "2025-05-07T16:49:31Z")

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Hi, I recently wrote, as a non-proffessional programmer, a function to manage the charging of my solar battery based on rules and time periodes defined in a Google Sheet (for simple, external, manual control). The code…

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## [Setting allowList dynamically from data base](https://discourse.nodered.org/t/setting-allowlist-dynamically-from-data-base/96896)

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**Author:** [@Rasmus1](https://discourse.nodered.org/u/Rasmus1)\
**Replies:** 3\
**Last updated:** [7 May 2025 10:15 UTC](https://discourse.nodered.org/t/setting-allowlist-dynamically-from-data-base/96896 "2025-05-07T10:15:52Z")

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Hi! I'm running node-red using docker. On node-red starting, I would like to set the settings.externalModules.palette.allowList using values from a data base. For now, i use the storageModule. In the exported module, I…

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## [MQTT topics creates loop with Serial Port](https://discourse.nodered.org/t/mqtt-topics-creates-loop-with-serial-port/96914)

<div class="topic-metadata">

**Author:** [@WannabeMaker](https://discourse.nodered.org/u/WannabeMaker)\
**Replies:** 1\
**Last updated:** [5 May 2025 22:26 UTC](https://discourse.nodered.org/t/mqtt-topics-creates-loop-with-serial-port/96914 "2025-05-05T22:26:00Z")

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Hello, I have question regarding how to deal with MQTT topics. I have the following flow that I use to control a sensirion MFC5500. The flow works well without bug. The one problem that I have is when I want to do r…

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## [How to make node red restart automatically?](https://discourse.nodered.org/t/how-to-make-node-red-restart-automatically/96889)

<div class="topic-metadata">

**Author:** [@mike67](https://discourse.nodered.org/u/mike67)\
**Replies:** 1\
**Last updated:** [5 May 2025 14:53 UTC](https://discourse.nodered.org/t/how-to-make-node-red-restart-automatically/96889 "2025-05-05T14:53:24Z")

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Hello I have installed nodered from the docker. I use podman. The container is set with the option restart=always. When the container is started, it start the flow. But there are some errors generated by the flow (I…

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