# Latest

**URL:** https://discourse.nodered.org/latest.md?page=145

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

**Page:** 146

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## [Howto write ExtensionObjectArray with node-red-contrib-opcua](https://discourse.nodered.org/t/howto-write-extensionobjectarray-with-node-red-contrib-opcua/92108)

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**Author:** [@Barb21](https://discourse.nodered.org/u/Barb21)\
**Replies:** 0\
**Last updated:** [1 October 2024 15:18 UTC](https://discourse.nodered.org/t/howto-write-extensionobjectarray-with-node-red-contrib-opcua/92108 "2024-10-01T15:18:40Z")

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Hello, is it possible to write an ExtensionObjectArray with or without a given range? My Node-red does always a restart as an error is thrown {"log":"14:53:19.615Z :datatype\_factory :210 warning ns=0;i…

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## [🎉 nrg-cli v1.2.4 released](https://discourse.nodered.org/t/nrg-cli-v1-2-4-released/92103)

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**Author:** [@AllanOricil](https://discourse.nodered.org/u/AllanOricil)\
**Replies:** 0\
**Last updated:** [1 October 2024 13:32 UTC](https://discourse.nodered.org/t/nrg-cli-v1-2-4-released/92103 "2024-10-01T13:32:46Z")

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In this patch, all vulnerabilities were addressed. @allanoricil/nrg-cli @allanoricil/nrg-core

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## [Chart Dashboard 2 undefined legend](https://discourse.nodered.org/t/chart-dashboard-2-undefined-legend/92102)

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**Author:** [@juntiedt](https://discourse.nodered.org/u/juntiedt)\
**Replies:** 3\
**Last updated:** [1 October 2024 13:16 UTC](https://discourse.nodered.org/t/chart-dashboard-2-undefined-legend/92102 "2024-10-01T13:16:51Z")

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I am ínitialising my chart with this lines of code: node.send({ payload: \[\] }); node.send({ topic: "SZ", payload: 0 }); node.send({ topic: "AZ", payload: 0 }); node.send({ topic: "WZ", payload: 0 }); node.send({ topic:…

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## [Button icon does not update/refresh automatically](https://discourse.nodered.org/t/button-icon-does-not-update-refresh-automatically/92099)

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**Author:** [@waquete](https://discourse.nodered.org/u/waquete)\
**Replies:** 7\
**Last updated:** [1 October 2024 12:24 UTC](https://discourse.nodered.org/t/button-icon-does-not-update-refresh-automatically/92099 "2024-10-01T12:24:27Z")

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Hello, I have set a dashboard button that I just use to display an icon (iconify). icon and color is sent by msg.ui\_control: var msg2 = {}; if (msg.payload.state == "OFF") { msg2.ui\_control = { "icon" : "iconify-b…

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## [PLC machine data sent Via MQTT to Node Red Then to SQL Database](https://discourse.nodered.org/t/plc-machine-data-sent-via-mqtt-to-node-red-then-to-sql-database/90452)

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**Author:** [@kwalt](https://discourse.nodered.org/u/kwalt)\
**Replies:** 25\
**Last updated:** [1 October 2024 12:16 UTC](https://discourse.nodered.org/t/plc-machine-data-sent-via-mqtt-to-node-red-then-to-sql-database/90452 "2024-10-01T12:16:22Z")

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Hello. I am new to the world of Node-Red and could use some help setting it up for our facility. From what I have read so far it seems like it should work for this application. I have approx 40 machines I need to collec…

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## [HTTP 2.0 support in core http nodes?](https://discourse.nodered.org/t/http-2-0-support-in-core-http-nodes/91255)

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**Author:** [@Josh](https://discourse.nodered.org/u/Josh)\
**Replies:** 9\
**Last updated:** [1 October 2024 10:34 UTC](https://discourse.nodered.org/t/http-2-0-support-in-core-http-nodes/91255 "2024-10-01T10:34:58Z")

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Hi Forum, I'm working on a project using Node-RED and I'm curious about HTTP/2.0 support. I've been looking through the documentation but haven't found a definitive answer. Does Node-RED inherently support HTTP/2.0 prot…

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## [Group background color](https://discourse.nodered.org/t/group-background-color/92094)

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**Author:** [@selwynjackson](https://discourse.nodered.org/u/selwynjackson)\
**Replies:** 4\
**Last updated:** [1 October 2024 10:14 UTC](https://discourse.nodered.org/t/group-background-color/92094 "2024-10-01T10:14:08Z")

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How do I set the background colour for a group? I would like a different colour for each group. I have tried setting 'background-color' in a template, but that only works for the widgets.

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## [Yet another SQL timestamp doubt](https://discourse.nodered.org/t/yet-another-sql-timestamp-doubt/91301)

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**Author:** [@shubhamnodered](https://discourse.nodered.org/u/shubhamnodered)\
**Replies:** 16\
**Last updated:** [1 October 2024 09:39 UTC](https://discourse.nodered.org/t/yet-another-sql-timestamp-doubt/91301 "2024-10-01T09:39:16Z")

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Hi Guys and Hello node red team, My query is in reference to the point that Julius @TotallyInformation mentioned = "Always store DB entries in UTC" in the article " Wrong Timezone data in sql query result?!?" I found t…

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## [Base64 image is not working on dashboard 2.0](https://discourse.nodered.org/t/base64-image-is-not-working-on-dashboard-2-0/91318)

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**Author:** [@iotkismec](https://discourse.nodered.org/u/iotkismec)\
**Replies:** 6\
**Last updated:** [1 October 2024 01:59 UTC](https://discourse.nodered.org/t/base64-image-is-not-working-on-dashboard-2-0/91318 "2024-10-01T01:59:33Z")

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Hi. below is the dataURI that is worked in dashboard v1 but not in v2. data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAHQAAAB0CAYAAABUmhYnAAAAAklEQVR4AewaftIAAALPSURBVO3BQa7jSAwFwUxC97/yGy+5KkCQ7OlPMMJ8sMYo1ijFGqVYoxRrlG…

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## [Dynamic Settings on MQTT Node](https://discourse.nodered.org/t/dynamic-settings-on-mqtt-node/92082)

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**Author:** [@\_mirjka](https://discourse.nodered.org/u/_mirjka)\
**Replies:** 2\
**Last updated:** [30 September 2024 19:09 UTC](https://discourse.nodered.org/t/dynamic-settings-on-mqtt-node/92082 "2024-09-30T19:09:11Z")

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Hi, I have over 100 mqtt broker on various places running, they are not allowed to be connected except in case of an emergency. To send them an "stop", I would like to use the mqtt-in node dynamically. For easy testing,…

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## [Sending control messages in Dashboard 2.0 ui-iframe](https://discourse.nodered.org/t/sending-control-messages-in-dashboard-2-0-ui-iframe/92070)

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**Author:** [@omrid](https://discourse.nodered.org/u/omrid)\
**Replies:** 3\
**Last updated:** [30 September 2024 17:15 UTC](https://discourse.nodered.org/t/sending-control-messages-in-dashboard-2-0-ui-iframe/92070 "2024-09-30T17:15:30Z")

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I am using Dashboard-2.0 ui-iframe node, and able to set the url dynamically with msg.src. In dashboard-1.0, the node-red-node-ui-iframe node was also able to send control messages to the iFrame. For example, controllin…

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## [Running a flow triggered via HTTP concurrently](https://discourse.nodered.org/t/running-a-flow-triggered-via-http-concurrently/92076)

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**Author:** [@venomancer](https://discourse.nodered.org/u/venomancer)\
**Replies:** 9\
**Last updated:** [30 September 2024 14:27 UTC](https://discourse.nodered.org/t/running-a-flow-triggered-via-http-concurrently/92076 "2024-09-30T14:27:30Z")

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I am sorry if that has been answered somewhere else already, I haven't found exactly what I need via search. Let's say I'm building a flow that starts with an http-in node so that the flow can be triggered via an HTTP e…

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## [Common local library for managing javascript functions used in function nodes](https://discourse.nodered.org/t/common-local-library-for-managing-javascript-functions-used-in-function-nodes/92065)

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**Author:** [@psmtvdw](https://discourse.nodered.org/u/psmtvdw)\
**Replies:** 8\
**Last updated:** [30 September 2024 14:21 UTC](https://discourse.nodered.org/t/common-local-library-for-managing-javascript-functions-used-in-function-nodes/92065 "2024-09-30T14:21:14Z")

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I've stumbled on this old page: Design: Function Library node · node-red/node-red Wiki · GitHub We have seen a growing number of users who are inserting JavaScript into global context so it can be readily reused among…

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## [Unable to restart Node Red from a node](https://discourse.nodered.org/t/unable-to-restart-node-red-from-a-node/91192)

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**Author:** [@flyoffacliff](https://discourse.nodered.org/u/flyoffacliff)\
**Replies:** 9\
**Last updated:** [30 September 2024 11:41 UTC](https://discourse.nodered.org/t/unable-to-restart-node-red-from-a-node/91192 "2024-09-30T11:41:09Z")

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I have spent all day trying to setup a way to restart Node Red from itself. I tried the Exec node many different ways, but the commands like "node-red-restart" give a 127 command not found error. I also tried with the AP…

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## [Subflow - UI Group](https://discourse.nodered.org/t/subflow-ui-group/92068)

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**Author:** [@hazymat](https://discourse.nodered.org/u/hazymat)\
**Replies:** 11\
**Last updated:** [30 September 2024 11:22 UTC](https://discourse.nodered.org/t/subflow-ui-group/92068 "2024-09-30T11:22:47Z")

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Not sure if this is an issue, or by design If it's an issue, where can I report a bug (Node-RED core, or dashboard?) If I create a subflow containing a UI Template then set its UI Tab Group to point to an environment v…

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## [Node for multiple outputs based on single input](https://discourse.nodered.org/t/node-for-multiple-outputs-based-on-single-input/91645)

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**Author:** [@877](https://discourse.nodered.org/u/877)\
**Replies:** 5\
**Last updated:** [30 September 2024 10:00 UTC](https://discourse.nodered.org/t/node-for-multiple-outputs-based-on-single-input/91645 "2024-09-30T10:00:52Z")

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Could anyone recommend a node for controlling a fan based on a numeric range please? The incoming number is from an air quality sensor, the output is a hepa filter fan. I'd like to ensure there's not a "bouncing" effec…

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## [Modbus serial RTU communication](https://discourse.nodered.org/t/modbus-serial-rtu-communication/92066)

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**Author:** [@vsk17](https://discourse.nodered.org/u/vsk17)\
**Replies:** 1\
**Last updated:** [30 September 2024 08:30 UTC](https://discourse.nodered.org/t/modbus-serial-rtu-communication/92066 "2024-09-30T08:30:38Z")

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I am trying to establish the communication between energy-meter and laptop via modbus serial rtu. However I am not able to do so, and getting timeout error. It would be very helpful if someone can help in this.

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## [Conditionally show a widget?](https://discourse.nodered.org/t/conditionally-show-a-widget/92047)

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**Author:** [@hazymat](https://discourse.nodered.org/u/hazymat)\
**Replies:** 1\
**Last updated:** [30 September 2024 01:28 UTC](https://discourse.nodered.org/t/conditionally-show-a-widget/92047 "2024-09-30T01:28:09Z")

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Simple question, maybe one that has already been covered and apologies if so. Is it possible to conditionally show a widget? For example, if a rainfall level graph is empty then Don’t show it, instead I might want to sh…

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## [Assistance with Creating a Custom Node for Real-Time Data Processing](https://discourse.nodered.org/t/assistance-with-creating-a-custom-node-for-real-time-data-processing/92055)

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**Author:** [@salac64365](https://discourse.nodered.org/u/salac64365)\
**Replies:** 2\
**Last updated:** [29 September 2024 21:12 UTC](https://discourse.nodered.org/t/assistance-with-creating-a-custom-node-for-real-time-data-processing/92055 "2024-09-29T21:12:31Z")

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Hello Everyone :hugs:, I’ve been working on a project where I’m using Node-RED to process real-time data streams from multiple IoT sensors. The flow involves receiving data, performing some transformations, and then pus…

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## [Read file and split line into separate values](https://discourse.nodered.org/t/read-file-and-split-line-into-separate-values/92049)

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**Author:** [@BubbleBobble](https://discourse.nodered.org/u/BubbleBobble)\
**Replies:** 3\
**Last updated:** [29 September 2024 18:03 UTC](https://discourse.nodered.org/t/read-file-and-split-line-into-separate-values/92049 "2024-09-29T18:03:46Z")

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I want to read a Sensirion log file and split the two measured values into two separate values to work with. The two last values in the line is temperature and humidity. So far i have manage by the forum to read the …

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## [🎉 nrg-cli v1.2.1 released](https://discourse.nodered.org/t/nrg-cli-v1-2-1-released/91847)

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**Author:** [@AllanOricil](https://discourse.nodered.org/u/AllanOricil)\
**Replies:** 1\
**Last updated:** [29 September 2024 16:40 UTC](https://discourse.nodered.org/t/nrg-cli-v1-2-1-released/91847 "2024-09-29T16:40:27Z")

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I've just released @allanoricil/nrg-cli@v1.2.1 In this new version, the following commands were added This new version also enabled the cli to be used globally. Install it now using npm install -g @allanoricil…

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## [Ui\_template disappears when msg.payload input](https://discourse.nodered.org/t/ui-template-disappears-when-msg-payload-input/92042)

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**Author:** [@Panda](https://discourse.nodered.org/u/Panda)\
**Replies:** 4\
**Last updated:** [29 September 2024 13:51 UTC](https://discourse.nodered.org/t/ui-template-disappears-when-msg-payload-input/92042 "2024-09-29T13:51:46Z")

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Hey guys, I think the ui\_template is my final boss :sob: I would like to create a template like this: It works quite well so far, but as soon as I send "msg.payload.LWL" or "msg.payload" to the template, it disappe…

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## [Need help with Uni work](https://discourse.nodered.org/t/need-help-with-uni-work/91283)

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**Author:** [@nikhil](https://discourse.nodered.org/u/nikhil)\
**Replies:** 20\
**Last updated:** [29 September 2024 12:24 UTC](https://discourse.nodered.org/t/need-help-with-uni-work/91283 "2024-09-29T12:24:29Z")

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Has anyone ever done this, and can guide me on how to do it please

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## [Thoughts on Bun & Deno as replacement runtime](https://discourse.nodered.org/t/thoughts-on-bun-deno-as-replacement-runtime/91917)

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**Author:** [@kansaandre](https://discourse.nodered.org/u/kansaandre)\
**Replies:** 2\
**Last updated:** [29 September 2024 10:51 UTC](https://discourse.nodered.org/t/thoughts-on-bun-deno-as-replacement-runtime/91917 "2024-09-29T10:51:42Z")

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Wondering if you guys have thought about and maybe used Bun or Deno as runtimes for node-red?

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## [Minimize breaking changes](https://discourse.nodered.org/t/minimize-breaking-changes/91265)

<div class="topic-metadata">

**Author:** [@davidz](https://discourse.nodered.org/u/davidz)\
**Replies:** 32\
**Last updated:** [29 September 2024 09:54 UTC](https://discourse.nodered.org/t/minimize-breaking-changes/91265 "2024-09-29T09:54:10Z")

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As an industrial user, it is a big hassle to have breaking changes from the software. Whenever there is a breaking change from software version upgrade that makes current flow non-functional, then the team has to go thr…

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## [Updating things and what I'm seeing](https://discourse.nodered.org/t/updating-things-and-what-im-seeing/91926)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 5\
**Last updated:** [29 September 2024 09:07 UTC](https://discourse.nodered.org/t/updating-things-and-what-im-seeing/91926 "2024-09-29T09:07:31Z")

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From my other thread: Stuck with how to resolve this problem (Global context testing) - #22 by Trying\_to\_learn @TotallyInformation sudo apt update && sudo apt upgrade sudo npm -g update cd ~/.node-red npm update You…

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## [LOGO8 \> Homeassistant Temperature measurement](https://discourse.nodered.org/t/logo8-homeassistant-temperature-measurement/92046)

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**Author:** [@Steff6666](https://discourse.nodered.org/u/Steff6666)\
**Replies:** 0\
**Last updated:** [29 September 2024 08:49 UTC](https://discourse.nodered.org/t/logo8-homeassistant-temperature-measurement/92046 "2024-09-29T08:49:21Z")

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I am connecting my home assistant to my Logo8 that is located in my garage. Mainly I use the PLC for heating of the garage and measure both outside and inside temperature. Now I want to see the the temperatures as histor…

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## [Unwanted light activation when deploying](https://discourse.nodered.org/t/unwanted-light-activation-when-deploying/91891)

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**Author:** [@clemente3905](https://discourse.nodered.org/u/clemente3905)\
**Replies:** 2\
**Last updated:** [29 September 2024 06:37 UTC](https://discourse.nodered.org/t/unwanted-light-activation-when-deploying/91891 "2024-09-29T06:37:20Z")

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HI all, first post here. I use node red in my Home Assistant installation to make customization of lights in my house. To operate light I usually use the call-service block in which I give the service, the entity and i…

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## [Storing Chart Data from a D2 Dashboard](https://discourse.nodered.org/t/storing-chart-data-from-a-d2-dashboard/90832)

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**Author:** [@DarkZone](https://discourse.nodered.org/u/DarkZone)\
**Replies:** 15\
**Last updated:** [28 September 2024 23:56 UTC](https://discourse.nodered.org/t/storing-chart-data-from-a-d2-dashboard/90832 "2024-09-28T23:56:46Z")

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Hey guys, I'm working on a few Dashboards and have found it pretty annoying to lose all my charted points when im restarting my Docker instance. I tried to read up on it using this flowfuse article but noticed it is for…

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## [Link call node in subflow](https://discourse.nodered.org/t/link-call-node-in-subflow/91628)

<div class="topic-metadata">

**Author:** [@fmarzocca](https://discourse.nodered.org/u/fmarzocca)\
**Replies:** 2\
**Last updated:** [28 September 2024 16:29 UTC](https://discourse.nodered.org/t/link-call-node-in-subflow/91628 "2024-09-28T16:29:18Z")

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Hi, after upgrading to v.4.0.3 I noticed that link call nodes in Subflows are loosing their target. If I link them to the correct subroutine and deploy it seems ok, but refreshing the page they come back to the error si…

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