# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=1

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

**Page:** 2

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## [Alexa Input and UDP](https://discourse.nodered.org/t/alexa-input-and-udp/101748)

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**Author:** [@fogmajor](https://discourse.nodered.org/u/fogmajor)\
**Replies:** 2\
**Last updated:** [6 September 2026 13:19 UTC](https://discourse.nodered.org/t/alexa-input-and-udp/101748 "2026-09-06T13:19:19Z")

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Good Morning I wondered if you were able to point me a the right direction. I currently have a Kira128 which basically stores 128 infra-red codes of my choosing. The unit then sits on the network (Lan) and you send a …

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## [Event loop blocking doubles exactly 2x each round until the add-on gets killed — what mechanism could do this?](https://discourse.nodered.org/t/event-loop-blocking-doubles-exactly-2x-each-round-until-the-add-on-gets-killed-what-mechanism-could-do-this/101741)

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**Author:** [@charles0103](https://discourse.nodered.org/u/charles0103)\
**Replies:** 5\
**Last updated:** [6 September 2026 11:52 UTC](https://discourse.nodered.org/t/event-loop-blocking-doubles-exactly-2x-each-round-until-the-add-on-gets-killed-what-mechanism-could-do-this/101741 "2026-09-06T11:52:54Z")

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I have a Node-RED instance that freezes several times a day. I instrumented the event loop and found something I can't explain: the blocking duration doubles almost exactly each round, reproducibly, across 12 independent…

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## [Bigtimer overnight days on/days off challenge](https://discourse.nodered.org/t/bigtimer-overnight-days-on-days-off-challenge/101340)

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**Author:** [@usernamepasswordBS](https://discourse.nodered.org/u/usernamepasswordBS)\
**Replies:** 17\
**Last updated:** [4 September 2026 01:21 UTC](https://discourse.nodered.org/t/bigtimer-overnight-days-on-days-off-challenge/101340 "2026-09-04T01:21:57Z")

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Hi All, i've got some mosquito repellant diffusers in my bedrooms which I like to switch on around 9pm and switch off at 5.30 which I used to do with old fashioned timers. I got some Tasmota and OpenBeken devices and can…

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## [BLE data into a MySQL DB](https://discourse.nodered.org/t/ble-data-into-a-mysql-db/101720)

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**Author:** [@GerB](https://discourse.nodered.org/u/GerB)\
**Replies:** 3\
**Last updated:** [3 September 2026 17:20 UTC](https://discourse.nodered.org/t/ble-data-into-a-mysql-db/101720 "2026-09-03T17:20:35Z")

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Dear reader, I am just beginning with Node-red (5.0.4, npm 11.15.0) and have some trouble with the following. All the BLE messages I can receive with the BLE Scanner result in a lot of info and I would like to make it mo…

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## [@flowfuse/node-red-dashboard v1.31.0 released](https://discourse.nodered.org/t/flowfuse-node-red-dashboard-v1-31-0-released/101696)

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**Author:** [@Colin](https://discourse.nodered.org/u/Colin)\
**Replies:** 2\
**Last updated:** [3 September 2026 12:13 UTC](https://discourse.nodered.org/t/flowfuse-node-red-dashboard-v1-31-0-released/101696 "2026-09-03T12:13:59Z")

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I see that the flowfuse dashboard (D2) version 1.31.0 has been released. See Release v1.31.0 · FlowFuse/node-red-dashboard · GitHub for full details. In summary, fixes to: \[454 + 1538\] Default theme presets + fixes fo…

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## [Node-RED 5.0.6 Dark Theme is removing custom color settings from groups](https://discourse.nodered.org/t/node-red-5-0-6-dark-theme-is-removing-custom-color-settings-from-groups/101717)

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**Author:** [@DiverRich](https://discourse.nodered.org/u/DiverRich)\
**Replies:** 3\
**Last updated:** [2 September 2026 18:29 UTC](https://discourse.nodered.org/t/node-red-5-0-6-dark-theme-is-removing-custom-color-settings-from-groups/101717 "2026-09-02T18:29:37Z")

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I just updated today and I don't remember this being a thing, but the dark theme setting is removing custom group colors, group name font colors and group border colors. Switching to the light theme restores them. I'm se…

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## [Node-RED 5.0.5 crashes with "Illegal instruction" (SIGILL) on Raspberry Pi 4 Model B](https://discourse.nodered.org/t/node-red-5-0-5-crashes-with-illegal-instruction-sigill-on-raspberry-pi-4-model-b/101715)

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**Author:** [@OlliOnNR](https://discourse.nodered.org/u/OlliOnNR)\
**Replies:** 3\
**Last updated:** [2 September 2026 17:53 UTC](https://discourse.nodered.org/t/node-red-5-0-5-crashes-with-illegal-instruction-sigill-on-raspberry-pi-4-model-b/101715 "2026-09-02T17:53:44Z")

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I'm seeing a reproducible crash after upgrading from Node-RED 5.0.4 to 5.0.5 on two separate Raspberry Pi 4 Model B units (Rev 1.1 and Rev 1.2, both aarch64/Cortex-A72). Environment: Raspberry Pi 4 Model B (both Rev 1…

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## [Link Call To context menu item](https://discourse.nodered.org/t/link-call-to-context-menu-item/101721)

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**Author:** [@gregorius](https://discourse.nodered.org/u/gregorius)\
**Replies:** 7\
**Last updated:** [2 September 2026 14:35 UTC](https://discourse.nodered.org/t/link-call-to-context-menu-item/101721 "2026-09-02T14:35:48Z")

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Hi There, Recently I was adding link call nodes and became aware of how nice it would be to have this option in the context IFF the highlighted node is a link in node: The alternative was searching for the right nod…

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## [Javascript Not Running in ui\_template](https://discourse.nodered.org/t/javascript-not-running-in-ui-template/101712)

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**Author:** [@TrickyZXR](https://discourse.nodered.org/u/TrickyZXR)\
**Replies:** 16\
**Last updated:** [2 September 2026 12:51 UTC](https://discourse.nodered.org/t/javascript-not-running-in-ui-template/101712 "2026-09-02T12:51:48Z")

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I have a function to scan a dir in .node-red dir on rpi and give me a list of images in that dir. if (!msg.payload) return msg; // Split into lines let lines = msg.payload.split("\\\\n").filter(x =\> x.trim() !== ""); // B…

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## [Node-red palette manager not updating](https://discourse.nodered.org/t/node-red-palette-manager-not-updating/101708)

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**Author:** [@lee\_evo](https://discourse.nodered.org/u/lee_evo)\
**Replies:** 9\
**Last updated:** [1 September 2026 13:50 UTC](https://discourse.nodered.org/t/node-red-palette-manager-not-updating/101708 "2026-09-01T13:50:17Z")

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I'm unsure if the problem is local to me as I can't see any other posts reporting it. I've not seen palette manager update the catalogue for over 2days, on inspection the last catalogue was 2026-08-29T17:25:36.898Z. an…

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## [Custom autheitication. sharing data with variable in settings.json](https://discourse.nodered.org/t/custom-autheitication-sharing-data-with-variable-in-settings-json/101700)

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**Author:** [@svefro](https://discourse.nodered.org/u/svefro)\
**Replies:** 3\
**Last updated:** [1 September 2026 07:56 UTC](https://discourse.nodered.org/t/custom-autheitication-sharing-data-with-variable-in-settings-json/101700 "2026-09-01T07:56:10Z")

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I have made a custom authentication middleware in settings.js that handles session and users for all my http nodes. Currently i store data in a global in settings.js global\['my\_auth\_data'\] this is loaded on each reques…

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## [Html node not working on string](https://discourse.nodered.org/t/html-node-not-working-on-string/101705)

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**Author:** [@bakman2](https://discourse.nodered.org/u/bakman2)\
**Replies:** 5\
**Last updated:** [31 August 2026 10:30 UTC](https://discourse.nodered.org/t/html-node-not-working-on-string/101705 "2026-08-31T10:30:37Z")

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Does the html node require more than just a string in msg.payload or does the template node encode the content ? (ie. it looks like html but actually uses an encoded string?) inject node \> template node (as plain text) \>…

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## [Node-RED as a platform for complex web applications?](https://discourse.nodered.org/t/node-red-as-a-platform-for-complex-web-applications/101697)

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**Author:** [@Meloman](https://discourse.nodered.org/u/Meloman)\
**Replies:** 3\
**Last updated:** [29 August 2026 14:47 UTC](https://discourse.nodered.org/t/node-red-as-a-platform-for-complex-web-applications/101697 "2026-08-29T14:47:22Z")

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A few years ago there was a discussion here about using Node-RED as a CMS. I think the more interesting question is slightly different: is Node-RED a good platform for building process-driven web applications? I've be…

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## [Protect Node Red from anywhere](https://discourse.nodered.org/t/protect-node-red-from-anywhere/101694)

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**Author:** [@devifast](https://discourse.nodered.org/u/devifast)\
**Replies:** 2\
**Last updated:** [29 August 2026 14:25 UTC](https://discourse.nodered.org/t/protect-node-red-from-anywhere/101694 "2026-08-29T14:25:52Z")

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Node-RED Security Variants Discussed and Tested Context The goal is to protect a Node-RED installation exposed through a router, while keeping the setup simple and understandable. The following four variants were discus…

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## [Api for day ahead price + forecast](https://discourse.nodered.org/t/api-for-day-ahead-price-forecast/101390)

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**Author:** [@BackupBaTTerY](https://discourse.nodered.org/u/BackupBaTTerY)\
**Replies:** 1\
**Last updated:** [26 August 2026 07:10 UTC](https://discourse.nodered.org/t/api-for-day-ahead-price-forecast/101390 "2026-08-26T07:10:48Z")

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Hi everyone, I am looking for a few Node-RED users who would like to test a new electricity price and CO2 forecast API in a real setup. I did not build a custom Node-RED node for this first step on purpose. Instead, I …

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## [Node-red-contrib-cron-plus example fail](https://discourse.nodered.org/t/node-red-contrib-cron-plus-example-fail/101673)

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**Author:** [@Bobo](https://discourse.nodered.org/u/Bobo)\
**Replies:** 4\
**Last updated:** [23 August 2026 12:07 UTC](https://discourse.nodered.org/t/node-red-contrib-cron-plus-example-fail/101673 "2026-08-23T12:07:31Z")

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Using the latest NR and cronplus node, I thought I would take cronplus out for a spin using the "using dates" example. When I hit inject I get this error msg: {"\_\_enc\_\_":true,"type":"error","data":{"name":"TypeError","m…

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## [Would a deterministic approval and verification layer add value to Node-RED smart-home flows?](https://discourse.nodered.org/t/would-a-deterministic-approval-and-verification-layer-add-value-to-node-red-smart-home-flows/101656)

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**Author:** [@spatialos\_core](https://discourse.nodered.org/u/spatialos_core)\
**Replies:** 2\
**Last updated:** [21 August 2026 02:07 UTC](https://discourse.nodered.org/t/would-a-deterministic-approval-and-verification-layer-add-value-to-node-red-smart-home-flows/101656 "2026-08-21T02:07:16Z")

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I am researching a Node-RED adapter for Spatial OS, a platform-neutral policy layer that keeps natural-language intent separate from physical device execution. The core builds a spatial graph, compiles requested outcome…

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## [Node-red to LibreCalc](https://discourse.nodered.org/t/node-red-to-librecalc/101636)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 20\
**Last updated:** [20 August 2026 08:22 UTC](https://discourse.nodered.org/t/node-red-to-librecalc/101636 "2026-08-20T08:22:05Z")

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(Looking for help) Folks, new project for me. LOGISTICS There is a spreadsheet with assets and all that stuff. For one person it is ok to use as is, but the list is growing and for one person to handle it is becoming …

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## [Fanuc plc opc-ua](https://discourse.nodered.org/t/fanuc-plc-opc-ua/101628)

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**Author:** [@AlastairLong](https://discourse.nodered.org/u/AlastairLong)\
**Replies:** 2\
**Last updated:** [18 August 2026 10:30 UTC](https://discourse.nodered.org/t/fanuc-plc-opc-ua/101628 "2026-08-18T10:30:37Z")

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I am getting a new machine which is controlled by FANUC PLC. The supplier has also said that the can setup OPC-UA communication so that we can get data from the machine. I have never used OPC-UA before, but from lookin…

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## [Issue with node-red-contrib-modbus](https://discourse.nodered.org/t/issue-with-node-red-contrib-modbus/101637)

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**Author:** [@Switchblade2](https://discourse.nodered.org/u/Switchblade2)\
**Replies:** 2\
**Last updated:** [15 August 2026 07:12 UTC](https://discourse.nodered.org/t/issue-with-node-red-contrib-modbus/101637 "2026-08-15T07:12:38Z")

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I update node.js to v24 and NodeRed to v5.0.4 and after this upgrade my flow with 3 modbus nodes (1 modbus-read and 2 modbus-getter) worked fine. After upgrading the node-red-contrib-modbus from 5.45.2 to 5.60.1 my modb…

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## [Handling large message payloads and memory efficiency in custom Function nodes](https://discourse.nodered.org/t/handling-large-message-payloads-and-memory-efficiency-in-custom-function-nodes/101513)

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**Author:** [@ranasab4](https://discourse.nodered.org/u/ranasab4)\
**Replies:** 20\
**Last updated:** [13 August 2026 16:02 UTC](https://discourse.nodered.org/t/handling-large-message-payloads-and-memory-efficiency-in-custom-function-nodes/101513 "2026-08-13T16:02:45Z")

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Hi everyone, I am working on a Node-RED automation flow that processes high-frequency data streams and running into a performance bottleneck within custom JavaScript Function nodes. Current Setup: Node-RED running o…

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## [Modbus server Address assigning issue](https://discourse.nodered.org/t/modbus-server-address-assigning-issue/101478)

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**Author:** [@aminulhaq](https://discourse.nodered.org/u/aminulhaq)\
**Replies:** 1\
**Last updated:** [13 August 2026 12:15 UTC](https://discourse.nodered.org/t/modbus-server-address-assigning-issue/101478 "2026-08-13T12:15:38Z")

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Hi i am using node-red-contrib-modbus 5.4 and use modbus server and wientek tk8071ip hmi as modbus tcp/ip the connection is happend perfectly i have set holding register at numeric display on hmi with address 4x01 to 4x0…

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## [Some UIBuilder guidance?](https://discourse.nodered.org/t/some-uibuilder-guidance/101538)

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**Author:** [@hazymat](https://discourse.nodered.org/u/hazymat)\
**Replies:** 15\
**Last updated:** [12 August 2026 23:44 UTC](https://discourse.nodered.org/t/some-uibuilder-guidance/101538 "2026-08-12T23:44:36Z")

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Hello I've finally got started with UIBuilder this week. Unwisely, I looked through the docs just enough to appreciate how very well documented it is, then proceeded to completely ignore the excellent documentation and…

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## [Nodered keeps crashing on ha rpi](https://discourse.nodered.org/t/nodered-keeps-crashing-on-ha-rpi/101614)

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**Author:** [@b4cksl4sh](https://discourse.nodered.org/u/b4cksl4sh)\
**Replies:** 4\
**Last updated:** [11 August 2026 20:47 UTC](https://discourse.nodered.org/t/nodered-keeps-crashing-on-ha-rpi/101614 "2026-08-11T20:47:35Z")

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Please help, i can't find any more information about this. Since updating HA Core to 2026.8 my nodered integration keeps crashing every now and then. This is the error log i get: 9 Aug 23:19:03 - \[error\] UnhandledPromis…

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## [Weird all my icons (associated with buttons) in dashboard 2.0 show is just outline of a square?](https://discourse.nodered.org/t/weird-all-my-icons-associated-with-buttons-in-dashboard-2-0-show-is-just-outline-of-a-square/101610)

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**Author:** [@Jibun-no-Kage](https://discourse.nodered.org/u/Jibun-no-Kage)\
**Replies:** 4\
**Last updated:** [10 August 2026 07:40 UTC](https://discourse.nodered.org/t/weird-all-my-icons-associated-with-buttons-in-dashboard-2-0-show-is-just-outline-of-a-square/101610 "2026-08-10T07:40:46Z")

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Weird all my icons (associated with ui buttons) in dashboard 2.0 show now is just an outline of a square? I have stop and restarted NR, the flows have not changed. Using MDI icons of course. No errors or such in the N…

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## [AggregateError when using pi-gpiod](https://discourse.nodered.org/t/aggregateerror-when-using-pi-gpiod/101608)

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**Author:** [@delboy](https://discourse.nodered.org/u/delboy)\
**Replies:** 9\
**Last updated:** [9 August 2026 18:56 UTC](https://discourse.nodered.org/t/aggregateerror-when-using-pi-gpiod/101608 "2026-08-09T18:56:59Z")

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Using Node-RED 5.0.4 Installed node-red-node-pi-gpiod V0.5.1 and when attempting to control a GPIO pin it throws an error - ECONNREFUSED localhost:8888 I am a newbie to pi, web-servers and Node-RED - where should I st…

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## [Raspberry Pi 5 + OpenPlotter 4: Replacement for iiot2k/node-red-gpio?](https://discourse.nodered.org/t/raspberry-pi-5-openplotter-4-replacement-for-iiot2k-node-red-gpio/101603)

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**Author:** [@Lazz](https://discourse.nodered.org/u/Lazz)\
**Replies:** 0\
**Last updated:** [6 August 2026 05:40 UTC](https://discourse.nodered.org/t/raspberry-pi-5-openplotter-4-replacement-for-iiot2k-node-red-gpio/101603 "2026-08-06T05:40:01Z")

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Since recent updates, either Openplotter, Signal K or even Pi I've lost my GPIO node/s. I get a "chip error" message. Raspberry Pi 5 OpenPlotter 4 Signal K 2.30.0 Node.js 22.23.2 gpiodetect works iiot2k GPIO nodes sta…

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## [\[Paid Study\] What if an AI agent's run looked like a Node-RED flow? Help us test that idea — 1 hour, €15 Amazon gift card](https://discourse.nodered.org/t/paid-study-what-if-an-ai-agents-run-looked-like-a-node-red-flow-help-us-test-that-idea-1-hour-15-amazon-gift-card/101596)

<div class="topic-metadata">

**Author:** [@zekun-wu](https://discourse.nodered.org/u/zekun-wu)\
**Replies:** 0\
**Last updated:** [4 August 2026 18:34 UTC](https://discourse.nodered.org/t/paid-study-what-if-an-ai-agents-run-looked-like-a-node-red-flow-help-us-test-that-idea-1-hour-15-amazon-gift-card/101596 "2026-08-04T18:34:06Z")

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Hi Node-RED folks! :waving\_hand: We're researchers at Saarland University, and we suspect this community will immediately get what we're building. You know the feeling of wiring up a flow, watching messages move throug…

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## [Error when starting Node-Red](https://discourse.nodered.org/t/error-when-starting-node-red/101582)

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**Author:** [@warnert](https://discourse.nodered.org/u/warnert)\
**Replies:** 17\
**Last updated:** [4 August 2026 15:33 UTC](https://discourse.nodered.org/t/error-when-starting-node-red/101582 "2026-08-04T15:33:15Z")

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I run Node-Red on a vm (proxmox) on Debian13. I just updated with the script. I already added the line Environment="NODE\_RED\_OPTIONS=" in nodered.service. But I still get the following error: warner@nodered3:~$ node-r…

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## [Help with "lost" message](https://discourse.nodered.org/t/help-with-lost-message/101545)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 12\
**Last updated:** [2 August 2026 21:05 UTC](https://discourse.nodered.org/t/help-with-lost-message/101545 "2026-08-02T21:05:05Z")

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I'm confused. I seem to be losing messages through this change node. Global context PROOF OF LIFE here. Used here. Message comes in. (Green) you can see the message. change node as shown. Nothing coming out. …

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