# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=35

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

**Page:** 36

---

## [Icecast radio stream to dashboard VU meter](https://discourse.nodered.org/t/icecast-radio-stream-to-dashboard-vu-meter/97556)

<div class="topic-metadata">

**Author:** [@acedog5](https://discourse.nodered.org/u/acedog5)\
**Replies:** 2\
**Last updated:** [17 June 2025 03:07 UTC](https://discourse.nodered.org/t/icecast-radio-stream-to-dashboard-vu-meter/97556 "2025-06-17T03:07:23Z")

</div>

Just as the title says I have been trying to figure out a way to monitor icecast radio streams. Right now I am just trying to get a VU meter on the dashboard to visually reference if there is silence. I have tried sear…

---

## [HTTP Request with dynamic authorization token](https://discourse.nodered.org/t/http-request-with-dynamic-authorization-token/97640)

<div class="topic-metadata">

**Author:** [@pacmanmt](https://discourse.nodered.org/u/pacmanmt)\
**Replies:** 5\
**Last updated:** [16 June 2025 20:18 UTC](https://discourse.nodered.org/t/http-request-with-dynamic-authorization-token/97640 "2025-06-16T20:18:00Z")

</div>

Hi all, I am struggling trying to build a flow to interact with a Teltonika router API. To use it I have to make a first http request to receive the authorization token and then a second one (the actual request to the …

---

## [Load test with hundreds of JSON messages](https://discourse.nodered.org/t/load-test-with-hundreds-of-json-messages/97410)

<div class="topic-metadata">

**Author:** [@Hoboclown](https://discourse.nodered.org/u/Hoboclown)\
**Replies:** 18\
**Last updated:** [16 June 2025 12:48 UTC](https://discourse.nodered.org/t/load-test-with-hundreds-of-json-messages/97410 "2025-06-16T12:48:27Z")

</div>

I've only just installed Node RED and I'm looking for a bit of direction for my project I've created an application for my companies tracking devices that send cell tower and GPS data over mqtt and I was looking to load…

---

## [Help with a trigger node - trick](https://discourse.nodered.org/t/help-with-a-trigger-node-trick/97643)

<div class="topic-metadata">

**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 5\
**Last updated:** [16 June 2025 05:37 UTC](https://discourse.nodered.org/t/help-with-a-trigger-node-trick/97643 "2025-06-16T05:37:37Z")

</div>

I'm trying to optimise some code but am stuck. This is my trigger node. \[{"id":"21982222.97dd2e","type":"trigger","z":"fb549e2f.4d026","g":"9f73c6fa33db761f","name":"","op1":"{\\"command\\": \\"remove-all\\"}","op2":"{\\"co…

---

## [Scope of constants](https://discourse.nodered.org/t/scope-of-constants/97629)

<div class="topic-metadata">

**Author:** [@Janvi](https://discourse.nodered.org/u/Janvi)\
**Replies:** 9\
**Last updated:** [15 June 2025 23:13 UTC](https://discourse.nodered.org/t/scope-of-constants/97629 "2025-06-15T23:13:08Z")

</div>

if I define any constant like const value = {val:123}; its only known inside same node. Is there any possibility to put this definition to flow-scope without using context variable by flow.set ?

---

## [Http in without authorization](https://discourse.nodered.org/t/http-in-without-authorization/97636)

<div class="topic-metadata">

**Author:** [@tobiasBora](https://discourse.nodered.org/u/tobiasBora)\
**Replies:** 2\
**Last updated:** [15 June 2025 16:51 UTC](https://discourse.nodered.org/t/http-in-without-authorization/97636 "2025-06-15T16:51:01Z")

</div>

I'd like to try to connect web-hooks to node-red (for instance when a new google form is submitted). For this, I tried to use the http in node. I configured an URL /foo (if it matters, I run node-red behind a nginx proxy…

---

## [Install docker after Node-RED was installed on Debian GNU/Linux 12 (bookworm) on raspberry 4B](https://discourse.nodered.org/t/install-docker-after-node-red-was-installed-on-debian-gnu-linux-12-bookworm-on-raspberry-4b/97626)

<div class="topic-metadata">

**Author:** [@nosered1966](https://discourse.nodered.org/u/nosered1966)\
**Replies:** 4\
**Last updated:** [15 June 2025 15:51 UTC](https://discourse.nodered.org/t/install-docker-after-node-red-was-installed-on-debian-gnu-linux-12-bookworm-on-raspberry-4b/97626 "2025-06-15T15:51:05Z")

</div>

Hi all, does somebody know if it is possible to install Docker after Node-RED was installed on a raspberry 4B running Debian GNU/Linux 12 (bookworm)? The reason I want to install Docker is because I want to try out Nex…

---

## [Better way to change the colour of a Hue light without turning it on or off](https://discourse.nodered.org/t/better-way-to-change-the-colour-of-a-hue-light-without-turning-it-on-or-off/97243)

<div class="topic-metadata">

**Author:** [@ath0rus](https://discourse.nodered.org/u/ath0rus)\
**Replies:** 32\
**Last updated:** [15 June 2025 10:27 UTC](https://discourse.nodered.org/t/better-way-to-change-the-colour-of-a-hue-light-without-turning-it-on-or-off/97243 "2025-06-15T10:27:00Z")

</div>

Hi, I have been trying to work out how to make it that at a set time of day my lights change colour without affecting if they are on or not (aka, if the light is on, Keep it on, If it is off, keep it off but change the …

---

## [From exec-node: ERR\_CHILD\_PROCESS\_STDIO\_MAXBUFFER](https://discourse.nodered.org/t/from-exec-node-err-child-process-stdio-maxbuffer/97630)

<div class="topic-metadata">

**Author:** [@krambriw](https://discourse.nodered.org/u/krambriw)\
**Replies:** 0\
**Last updated:** [15 June 2025 07:02 UTC](https://discourse.nodered.org/t/from-exec-node-err-child-process-stdio-maxbuffer/97630 "2025-06-15T07:02:47Z")

</div>

Hello, I saw that I had this error message below the exec node. In my setup I'm having Node-RED handling the execution, running & monitoring a docker container where the main task is to run a python script. This still wo…

---

## [Unable to install Node-Red on Android device](https://discourse.nodered.org/t/unable-to-install-node-red-on-android-device/97621)

<div class="topic-metadata">

**Author:** [@iungo](https://discourse.nodered.org/u/iungo)\
**Replies:** 8\
**Last updated:** [15 June 2025 07:21 UTC](https://discourse.nodered.org/t/unable-to-install-node-red-on-android-device/97621 "2025-06-15T07:21:22Z")

</div>

Trying to install Node-Red on Galaxy Tab Active 2 I've got fatal error message. What I'm doing wrong?

---

## [Insert the date and time separately into an SQL query](https://discourse.nodered.org/t/insert-the-date-and-time-separately-into-an-sql-query/97615)

<div class="topic-metadata">

**Author:** [@geronimo-78](https://discourse.nodered.org/u/geronimo-78)\
**Replies:** 5\
**Last updated:** [14 June 2025 20:25 UTC](https://discourse.nodered.org/t/insert-the-date-and-time-separately-into-an-sql-query/97615 "2025-06-14T20:25:05Z")

</div>

Hello, Excuse me for this naive question, but I'm a beginner. Here's my problem: I have a sensor that sends me speed information when an object passes in front of it. I want to record the date, time (in different colum…

---

## [Mqtt connection fails to local ip address (192.168.1.4) but 127.0.0.1 works](https://discourse.nodered.org/t/mqtt-connection-fails-to-local-ip-address-192-168-1-4-but-127-0-0-1-works/97612)

<div class="topic-metadata">

**Author:** [@mark31](https://discourse.nodered.org/u/mark31)\
**Replies:** 6\
**Last updated:** [14 June 2025 10:50 UTC](https://discourse.nodered.org/t/mqtt-connection-fails-to-local-ip-address-192-168-1-4-but-127-0-0-1-works/97612 "2025-06-14T10:50:57Z")

</div>

First set up Node-red version 3.1.15 on Dell 9020m running on Mint 20.3 Mosquitto 2,0.11 running on same server as Node-red. Dell 9020m eth0 192.168.1.4 and wlp2s0 192.168.1.5 both static. Finally Nordlynx for remote…

---

## [Need help with find/change value in non json string](https://discourse.nodered.org/t/need-help-with-find-change-value-in-non-json-string/97510)

<div class="topic-metadata">

**Author:** [@sailmich](https://discourse.nodered.org/u/sailmich)\
**Replies:** 4\
**Last updated:** [13 June 2025 17:24 UTC](https://discourse.nodered.org/t/need-help-with-find-change-value-in-non-json-string/97510 "2025-06-13T17:24:18Z")

</div>

Hello, I have a battery on my balcony PV panels connected. The battery can be manipulated via mqtt. Problem is that I have to sent a string to the battery which isn't json formatted. I tried with change and template node…

---

## [Http-in node raw body](https://discourse.nodered.org/t/http-in-node-raw-body/97606)

<div class="topic-metadata">

**Author:** [@aderici](https://discourse.nodered.org/u/aderici)\
**Replies:** 1\
**Last updated:** [13 June 2025 14:15 UTC](https://discourse.nodered.org/t/http-in-node-raw-body/97606 "2025-06-13T14:15:32Z")

</div>

Just wanted to share the solution i found for accessing raw body add this section to your settings.js, replaving /this/that with the path you'd like to get raw body : httpNodeMiddleware: (req, res, next) =\> { …

---

## [Err\_got\_request\_error](https://discourse.nodered.org/t/err-got-request-error/97596)

<div class="topic-metadata">

**Author:** [@nobbnodered](https://discourse.nodered.org/u/nobbnodered)\
**Replies:** 3\
**Last updated:** [13 June 2025 07:54 UTC](https://discourse.nodered.org/t/err-got-request-error/97596 "2025-06-13T07:54:53Z")

</div>

Hi, I'm new to node red and I found it very entertaining. I'm having trouble using a get because I get this error. I would appreciate your help.

---

## [Anyone experienced with controlling native HomeKit devices (not emulating HK Devices) via node-red](https://discourse.nodered.org/t/anyone-experienced-with-controlling-native-homekit-devices-not-emulating-hk-devices-via-node-red/97246)

<div class="topic-metadata">

**Author:** [@mac89muc](https://discourse.nodered.org/u/mac89muc)\
**Replies:** 6\
**Last updated:** [12 June 2025 08:45 UTC](https://discourse.nodered.org/t/anyone-experienced-with-controlling-native-homekit-devices-not-emulating-hk-devices-via-node-red/97246 "2025-06-12T08:45:34Z")

</div>

Hello, I'm trying to control native HomeKit Devices with node-red with the node-red-hap-controller. Just to clarify my case I'm not trying to emulate HomeKit devices to bring them to the home app - for that use case I'…

---

## [Touching base on how to report problems](https://discourse.nodered.org/t/touching-base-on-how-to-report-problems/97571)

<div class="topic-metadata">

**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 2\
**Last updated:** [12 June 2025 11:20 UTC](https://discourse.nodered.org/t/touching-base-on-how-to-report-problems/97571 "2025-06-12T11:20:39Z")

</div>

OCD sucks and in light of recent events I want to do better when reporting problems. So - for the sake of curiosity - what is the layout of a report should have? eg: machine specs problem what you did Could someone…

---

## [Help with parsing a CSV file](https://discourse.nodered.org/t/help-with-parsing-a-csv-file/97569)

<div class="topic-metadata">

**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 3\
**Last updated:** [12 June 2025 09:57 UTC](https://discourse.nodered.org/t/help-with-parsing-a-csv-file/97569 "2025-06-12T09:57:48Z")

</div>

Another project. :cry: I need to parse a csv file to a formatted text file for my dhcp list. All ops on THIS machine. THIS THIS. I tried - and failed - to read the file from my home directory. (Which is kind of goo…

---

## [How to put my token in http request](https://discourse.nodered.org/t/how-to-put-my-token-in-http-request/97163)

<div class="topic-metadata">

**Author:** [@AntoninPETIT](https://discourse.nodered.org/u/AntoninPETIT)\
**Replies:** 10\
**Last updated:** [12 June 2025 06:50 UTC](https://discourse.nodered.org/t/how-to-put-my-token-in-http-request/97163 "2025-06-12T06:50:57Z")

</div>

This is for creating a new token, but how and where do I add the comment to the token? my fonction error

---

## [GROUP SELECTION not working. NR 4.0.9](https://discourse.nodered.org/t/group-selection-not-working-nr-4-0-9/97523)

<div class="topic-metadata">

**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 30\
**Last updated:** [11 June 2025 21:59 UTC](https://discourse.nodered.org/t/group-selection-not-working-nr-4-0-9/97523 "2025-06-11T21:59:02Z")

</div>

I seem to be having a lot of problems of late. Today's quest is I'm trying to group some nodes. THEY WON'T! I've tried to group just a few, they too won't group. Other nodes - near by - will group. Want screen shots…

---

## [Node-RED Editor Hardware and Software Requirements](https://discourse.nodered.org/t/node-red-editor-hardware-and-software-requirements/97560)

<div class="topic-metadata">

**Author:** [@maurimuchico-work](https://discourse.nodered.org/u/maurimuchico-work)\
**Replies:** 2\
**Last updated:** [11 June 2025 19:46 UTC](https://discourse.nodered.org/t/node-red-editor-hardware-and-software-requirements/97560 "2025-06-11T19:46:15Z")

</div>

Hi team, good afternoon, I wanted to ask about the minimum software and hardware requirements recommended for developing flows in the Node-RED editor. We're currently encountering performance issues -specifically script…

---

## [Tab layout tool delete all my Flows](https://discourse.nodered.org/t/tab-layout-tool-delete-all-my-flows/97513)

<div class="topic-metadata">

**Author:** [@ylechasseur](https://discourse.nodered.org/u/ylechasseur)\
**Replies:** 5\
**Last updated:** [11 June 2025 13:40 UTC](https://discourse.nodered.org/t/tab-layout-tool-delete-all-my-flows/97513 "2025-06-11T13:40:32Z")

</div>

Hi, \*\*Flowfuse version: Latest version (2.18) \*\*Node-RED Stack: 4.0.9 \*\*NodeJS::20.16 Windows 11 Hello, I used the tab layout tool to correct the placement of some widgets. Once done, I received a message prompting…

---

## [How to get dates from the Calendar app - UBUNTU](https://discourse.nodered.org/t/how-to-get-dates-from-the-calendar-app-ubuntu/97544)

<div class="topic-metadata">

**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 0\
**Last updated:** [11 June 2025 03:23 UTC](https://discourse.nodered.org/t/how-to-get-dates-from-the-calendar-app-ubuntu/97544 "2025-06-11T03:23:28Z")

</div>

I'm running Ubuntu and sometimes use Calendar for things. I'll look in the library but thought I should ask here too. Is there a node that can talk to that program and get events from it?

---

## [How to create MQTT In nodes with variable topics](https://discourse.nodered.org/t/how-to-create-mqtt-in-nodes-with-variable-topics/97537)

<div class="topic-metadata">

**Author:** [@egibson940](https://discourse.nodered.org/u/egibson940)\
**Replies:** 2\
**Last updated:** [10 June 2025 20:06 UTC](https://discourse.nodered.org/t/how-to-create-mqtt-in-nodes-with-variable-topics/97537 "2025-06-10T20:06:27Z")

</div>

Currently I have a subflow with a MQTT in node that receives all sensor messages and I have to filter for the one I want based on the subflow property/environment variable sensorName. Instead of subscribing the MQTT In …

---

## [Node.js v18 is EOL, they are recommending users skip v20 - move to v22](https://discourse.nodered.org/t/node-js-v18-is-eol-they-are-recommending-users-skip-v20-move-to-v22/97536)

<div class="topic-metadata">

**Author:** [@TotallyInformation](https://discourse.nodered.org/u/TotallyInformation)\
**Replies:** 0\
**Last updated:** [10 June 2025 19:10 UTC](https://discourse.nodered.org/t/node-js-v18-is-eol-they-are-recommending-users-skip-v20-move-to-v22/97536 "2025-06-10T19:10:27Z")

</div>

An interesting article from a core node.js dev and especially important for anyone using Node-RED commercially or on the Internet.

---

## [Link call set to dynamic - can there be other link nodes in the flow?](https://discourse.nodered.org/t/link-call-set-to-dynamic-can-there-be-other-link-nodes-in-the-flow/97438)

<div class="topic-metadata">

**Author:** [@Sean-McG](https://discourse.nodered.org/u/Sean-McG)\
**Replies:** 23\
**Last updated:** [10 June 2025 15:41 UTC](https://discourse.nodered.org/t/link-call-set-to-dynamic-can-there-be-other-link-nodes-in-the-flow/97438 "2025-06-10T15:41:10Z")

</div>

I was looking to replace a large switch node with many outputs, by using a link call in dynamic mode. There is no return data required, as this just sends the stored state of many UI switches on a node red restart. It j…

---

## [Use config property of subflow in mqtt-nodes](https://discourse.nodered.org/t/use-config-property-of-subflow-in-mqtt-nodes/97431)

<div class="topic-metadata">

**Author:** [@L4RS](https://discourse.nodered.org/u/L4RS)\
**Replies:** 9\
**Last updated:** [10 June 2025 04:33 UTC](https://discourse.nodered.org/t/use-config-property-of-subflow-in-mqtt-nodes/97431 "2025-06-10T04:33:39Z")

</div>

Hello, I have to connect my software to four (or more - in the future) MQTT-Servers a once. All MQTT-Servers are of the same kind. My idea is to create a subflow which contains the \[mqtt-in\]- and \[mqtt-out\]-nodes. The s…

---

## [Problem detected when migrating subflows between machines](https://discourse.nodered.org/t/problem-detected-when-migrating-subflows-between-machines/97495)

<div class="topic-metadata">

**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 25\
**Last updated:** [9 June 2025 22:52 UTC](https://discourse.nodered.org/t/problem-detected-when-migrating-subflows-between-machines/97495 "2025-06-09T22:52:36Z")

</div>

Yes, how I am doing it may be making my own life miserable, but it's the only way I know. Details - as best I can give: EXPORTING FROM: NR 4.0.9 IMPORTING TO: NR 3.0.2 and 4.0.9 I would import it, REPLACE the node,…

---

## [Off topic - kinda - LOCAL way for better handling of rolling out updates to flows](https://discourse.nodered.org/t/off-topic-kinda-local-way-for-better-handling-of-rolling-out-updates-to-flows/97508)

<div class="topic-metadata">

**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 12\
**Last updated:** [9 June 2025 20:54 UTC](https://discourse.nodered.org/t/off-topic-kinda-local-way-for-better-handling-of-rolling-out-updates-to-flows/97508 "2025-06-09T20:54:10Z")

</div>

I've no idea how this works, and am taking a guess that github is the IDEAL thing to use for version management. I am going through a horrible piece of the learning curve and seeing the problems with how I made code. I…

---

## [Possible locale issue](https://discourse.nodered.org/t/possible-locale-issue/97515)

<div class="topic-metadata">

**Author:** [@Mick](https://discourse.nodered.org/u/Mick)\
**Replies:** 3\
**Last updated:** [9 June 2025 20:10 UTC](https://discourse.nodered.org/t/possible-locale-issue/97515 "2025-06-09T20:10:55Z")

</div>

I have a friend in Germany using one of my flows. Some of the data is not showing up on his dashboard. When he sent me a screen shot of the debug is showing the property value for SWR as "1,2" instead of "1.2". See …

[Previous page](https://discourse.nodered.org/c/general/7.md?page=34)

[Next page](https://discourse.nodered.org/c/general/7.md?page=36)