# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=92

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

**Page:** 93

---

## [I'm using custom (MUSE Automator) node red. It won't run](https://discourse.nodered.org/t/im-using-custom-muse-automator-node-red-it-wont-run/90021)

<div class="topic-metadata">

**Author:** [@andrew\_seo](https://discourse.nodered.org/u/andrew_seo)\
**Replies:** 4\
**Last updated:** [6 August 2024 14:49 UTC](https://discourse.nodered.org/t/im-using-custom-muse-automator-node-red-it-wont-run/90021 "2024-08-06T14:49:31Z")

</div>

I'm using custom node red. It won't run. I am an SI system developer. Mainly used AMX control systems support Nodered on new products. It is a customized product called MUSE automator. (https://www.amx.com/en/product…

---

## [Error: TypeError: Cannot read properties of undefined (reading 'length')](https://discourse.nodered.org/t/error-typeerror-cannot-read-properties-of-undefined-reading-length/90005)

<div class="topic-metadata">

**Author:** [@j2002](https://discourse.nodered.org/u/j2002)\
**Replies:** 11\
**Last updated:** [6 August 2024 14:14 UTC](https://discourse.nodered.org/t/error-typeerror-cannot-read-properties-of-undefined-reading-length/90005 "2024-08-06T14:14:21Z")

</div>

I have an image that I use to create several devices. All I do is update node-RED with json version that corresponds to each one. Well, from time to time, with the same image, I get this error and I don't know what to at…

---

## [Filling an array with the data of payload](https://discourse.nodered.org/t/filling-an-array-with-the-data-of-payload/90001)

<div class="topic-metadata">

**Author:** [@HaVi](https://discourse.nodered.org/u/HaVi)\
**Replies:** 7\
**Last updated:** [6 August 2024 06:38 UTC](https://discourse.nodered.org/t/filling-an-array-with-the-data-of-payload/90001 "2024-08-06T06:38:40Z")

</div>

Using the node node-red-contrib-ical-events to get events from my Google Calendar the output with all upcoming events is generated as shown in the graphic below. So far so good. Now I'm trying to figure out how to config…

---

## [Workaround: Failed to start server](https://discourse.nodered.org/t/workaround-failed-to-start-server/89997)

<div class="topic-metadata">

**Author:** [@sott1981](https://discourse.nodered.org/u/sott1981)\
**Replies:** 2\
**Last updated:** [6 August 2024 05:30 UTC](https://discourse.nodered.org/t/workaround-failed-to-start-server/89997 "2024-08-06T05:30:18Z")

</div>

Hi i got an issue with Starting up node red. Error: Failed to start server Versions: Node red 3.1.8, nodejs 20.16.0 Error is with running npm in line \[project dir\]\\node\_modules@node-red\\registry\\lib\\installer.js:584…

---

## [Split object based on (part of) msg name](https://discourse.nodered.org/t/split-object-based-on-part-of-msg-name/89989)

<div class="topic-metadata">

**Author:** [@biros](https://discourse.nodered.org/u/biros)\
**Replies:** 15\
**Last updated:** [6 August 2024 02:30 UTC](https://discourse.nodered.org/t/split-object-based-on-part-of-msg-name/89989 "2024-08-06T02:30:38Z")

</div>

hi, i am reading data from a plc (s7 comm node) the object i get is built like this; msg.payload.VarA\_Var1, msg.payload.VarB\_Var2, msg.payload.VarA\_Var3 ... etc. i would like to split this object to separate objects b…

---

## [Passively listen to and decode Modbus/RTU (RS485) communication](https://discourse.nodered.org/t/passively-listen-to-and-decode-modbus-rtu-rs485-communication/89975)

<div class="topic-metadata">

**Author:** [@Mike-FUT](https://discourse.nodered.org/u/Mike-FUT)\
**Replies:** 8\
**Last updated:** [5 August 2024 23:47 UTC](https://discourse.nodered.org/t/passively-listen-to-and-decode-modbus-rtu-rs485-communication/89975 "2024-08-05T23:47:39Z")

</div>

Hi All, I'm having two Modbus/RTU devices (RS-485 interface) and I'd like to passively listen to the communication between them with Node Red (using RS-485 / USB serial adapter) and decode the Modbus protocol between th…

---

## [Contrib-UI-LED will not load](https://discourse.nodered.org/t/contrib-ui-led-will-not-load/90011)

<div class="topic-metadata">

**Author:** [@dbissett](https://discourse.nodered.org/u/dbissett)\
**Replies:** 2\
**Last updated:** [5 August 2024 21:10 UTC](https://discourse.nodered.org/t/contrib-ui-led-will-not-load/90011 "2024-08-05T21:10:30Z")

</div>

First, I am a newb at node-red. In my project, I would love to use the LED. However, it does not work. The field for the page/group does not populate with the groups I already created. I can type in the name of a gro…

---

## [Combining values from an Array into a single word](https://discourse.nodered.org/t/combining-values-from-an-array-into-a-single-word/90003)

<div class="topic-metadata">

**Author:** [@haplc2000](https://discourse.nodered.org/u/haplc2000)\
**Replies:** 24\
**Last updated:** [5 August 2024 20:32 UTC](https://discourse.nodered.org/t/combining-values-from-an-array-into-a-single-word/90003 "2024-08-05T20:32:22Z")

</div>

Hello All, Today is my first day! I am using Node RED since a few weeks only. I have an array of values coming from Modbus RTU. I am able to read 4 objects under one array "payload.addressSpaceItems\[2\].nodeId". THe fo…

---

## [Switch node missing boolean?](https://discourse.nodered.org/t/switch-node-missing-boolean/90007)

<div class="topic-metadata">

**Author:** [@jmorris644](https://discourse.nodered.org/u/jmorris644)\
**Replies:** 3\
**Last updated:** [5 August 2024 16:36 UTC](https://discourse.nodered.org/t/switch-node-missing-boolean/90007 "2024-08-05T16:36:27Z")

</div>

Is there a reason that the switch node does not have a boolean option? Should I be using something else in its place to test a boolean value? (Currently I have resorted to text using 'true' and 'false'

---

## [Struggling with D3.js chart in UIBUILDER page](https://discourse.nodered.org/t/struggling-with-d3-js-chart-in-uibuilder-page/89651)

<div class="topic-metadata">

**Author:** [@oldie](https://discourse.nodered.org/u/oldie)\
**Replies:** 10\
**Last updated:** [5 August 2024 08:01 UTC](https://discourse.nodered.org/t/struggling-with-d3-js-chart-in-uibuilder-page/89651 "2024-08-05T08:01:52Z")

</div>

Hi I'm using UIBuilder 6.8.2 (along with NR 3.1.3) and think its a fantastic piece of code, really appreciate your efforts. I finally got it to run D3 to build a bar chart and using uibuilder.onChange managed to update d…

---

## [Speedtest node - no servers defined](https://discourse.nodered.org/t/speedtest-node-no-servers-defined/89984)

<div class="topic-metadata">

**Author:** [@k5map](https://discourse.nodered.org/u/k5map)\
**Replies:** 2\
**Last updated:** [5 August 2024 02:29 UTC](https://discourse.nodered.org/t/speedtest-node-no-servers-defined/89984 "2024-08-05T02:29:27Z")

</div>

Is anyone else getting a "no servers defined" error with the speedtest node?

---

## [Where can i find the node-red workspace folder for a local install?](https://discourse.nodered.org/t/where-can-i-find-the-node-red-workspace-folder-for-a-local-install/89965)

<div class="topic-metadata">

**Author:** [@jimmytang8855](https://discourse.nodered.org/u/jimmytang8855)\
**Replies:** 6\
**Last updated:** [4 August 2024 09:42 UTC](https://discourse.nodered.org/t/where-can-i-find-the-node-red-workspace-folder-for-a-local-install/89965 "2024-08-04T09:42:12Z")

</div>

here is where my node-red local install resides C:\\Node-red-Try2\\node\_modules.bin based on that, where might I find the node red workspace folder? this is with regards to Kuema's advice from here:

---

## [Rename a project?](https://discourse.nodered.org/t/rename-a-project/89974)

<div class="topic-metadata">

**Author:** [@wb666greene](https://discourse.nodered.org/u/wb666greene)\
**Replies:** 0\
**Last updated:** [3 August 2024 19:23 UTC](https://discourse.nodered.org/t/rename-a-project/89974 "2024-08-03T19:23:42Z")

</div>

I tried my first use of the projects feature, I had an existing flow and I created a new project. I expected it to create an empty flow for the new project, but instead it imported my existing flow. That is fine, I wan…

---

## [Nodered cannot be started after instal via Podman](https://discourse.nodered.org/t/nodered-cannot-be-started-after-instal-via-podman/89935)

<div class="topic-metadata">

**Author:** [@okircali](https://discourse.nodered.org/u/okircali)\
**Replies:** 2\
**Last updated:** [3 August 2024 09:03 UTC](https://discourse.nodered.org/t/nodered-cannot-be-started-after-instal-via-podman/89935 "2024-08-03T09:03:14Z")

</div>

Hello, I have installed the nodered via podman via below procedure and tried to start nodered and got below error. Do you have any suggestion? https://catalog.redhat.com/software/containers/ibm-edge/node-red/5ecf8c35ec…

---

## [Code Editor Backgroud or Theme](https://discourse.nodered.org/t/code-editor-backgroud-or-theme/89942)

<div class="topic-metadata">

**Author:** [@slapme](https://discourse.nodered.org/u/slapme)\
**Replies:** 7\
**Last updated:** [2 August 2024 23:51 UTC](https://discourse.nodered.org/t/code-editor-backgroud-or-theme/89942 "2024-08-02T23:51:56Z")

</div>

New to Node-RED. I changed the theme to dark in setting.js and it changed most things but not the main editor background. I am running in a docker container with the latest version using the Monaco editor. thx.

---

## [Can you style the Node Red editor?](https://discourse.nodered.org/t/can-you-style-the-node-red-editor/14738)

<div class="topic-metadata">

**Author:** [@michaelblight](https://discourse.nodered.org/u/michaelblight)\
**Replies:** 3\
**Last updated:** [2 August 2024 23:49 UTC](https://discourse.nodered.org/t/can-you-style-the-node-red-editor/14738 "2024-08-02T23:49:18Z")

</div>

Is there a way to style the editor - eg. put a caption in the title or change toolbar background colour or the flow background? I have multiple instances of Node Red and they all look too similar.

---

## [How do i insert a variable in a function - in the string](https://discourse.nodered.org/t/how-do-i-insert-a-variable-in-a-function-in-the-string/89949)

<div class="topic-metadata">

**Author:** [@PhilipR](https://discourse.nodered.org/u/PhilipR)\
**Replies:** 2\
**Last updated:** [2 August 2024 22:25 UTC](https://discourse.nodered.org/t/how-do-i-insert-a-variable-in-a-function-in-the-string/89949 "2024-08-02T22:25:35Z")

</div>

In the function node I have a line that looks like this: msg.payload.Rad1W = msg.payload.data.devices\_status.ec62608de1cc\["switch:0"\].apower Now... I would like to use the variables from the sub flow to replace the pla…

---

## [Node red change machine](https://discourse.nodered.org/t/node-red-change-machine/89954)

<div class="topic-metadata">

**Author:** [@dforster](https://discourse.nodered.org/u/dforster)\
**Replies:** 10\
**Last updated:** [2 August 2024 21:08 UTC](https://discourse.nodered.org/t/node-red-change-machine/89954 "2024-08-02T21:08:50Z")

</div>

Morning all, I have been running my Node Red/MQTT server on a Pi (Debian Buster) for 2 years but now things are getting serious and I have two houses reporting to Node Red and my little Pi is getting slow. I now have a …

---

## [Read and writing data temporarily](https://discourse.nodered.org/t/read-and-writing-data-temporarily/89963)

<div class="topic-metadata">

**Author:** [@gallionjason](https://discourse.nodered.org/u/gallionjason)\
**Replies:** 2\
**Last updated:** [2 August 2024 19:27 UTC](https://discourse.nodered.org/t/read-and-writing-data-temporarily/89963 "2024-08-02T19:27:53Z")

</div>

Hello, is there a way to write/read data temporarily? I would like to test a flow and get average values over time but I do not need to store or keep the data. Would it be possible to use sqlite node and set the databa…

---

## [Help with the function node](https://discourse.nodered.org/t/help-with-the-function-node/89603)

<div class="topic-metadata">

**Author:** [@migel](https://discourse.nodered.org/u/migel)\
**Replies:** 49\
**Last updated:** [2 August 2024 19:18 UTC](https://discourse.nodered.org/t/help-with-the-function-node/89603 "2024-08-02T19:18:40Z")

</div>

Hello.I'm new and I need some advice-help with my node function. I can't write the code to make it work properly, it always sends the value from pvpower.it should work as follows: I have three input nodes, namely soc, pv…

---

## [Extract a part of a string](https://discourse.nodered.org/t/extract-a-part-of-a-string/89938)

<div class="topic-metadata">

**Author:** [@pgenoud](https://discourse.nodered.org/u/pgenoud)\
**Replies:** 5\
**Last updated:** [2 August 2024 14:24 UTC](https://discourse.nodered.org/t/extract-a-part-of-a-string/89938 "2024-08-02T14:24:45Z")

</div>

Hi all, I have a use case that might be very easy for some of you. I have some codes send in Node Red as String that looks like this : A0000013683036 I would like to extract only the part 13683036. If my code sent i…

---

## [Help understanding how code is referenced in docker](https://discourse.nodered.org/t/help-understanding-how-code-is-referenced-in-docker/89950)

<div class="topic-metadata">

**Author:** [@ThingsTinkerer](https://discourse.nodered.org/u/ThingsTinkerer)\
**Replies:** 3\
**Last updated:** [2 August 2024 13:22 UTC](https://discourse.nodered.org/t/help-understanding-how-code-is-referenced-in-docker/89950 "2024-08-02T13:22:42Z")

</div>

Hi, I'm investigating some issues when deploying node-red docker container instance. On my local machine, I got the node red project set up with git. Including Dockerfile and all the rest to run in docker. Code is store…

---

## [How can I restart NR after crash (Windows)](https://discourse.nodered.org/t/how-can-i-restart-nr-after-crash-windows/89914)

<div class="topic-metadata">

**Author:** [@GiovanniG](https://discourse.nodered.org/u/GiovanniG)\
**Replies:** 3\
**Last updated:** [2 August 2024 11:47 UTC](https://discourse.nodered.org/t/how-can-i-restart-nr-after-crash-windows/89914 "2024-08-02T11:47:29Z")

</div>

Hi, my work is based on node-red-contrib-kodi which unfortunately has bugs and authos gave up on updating it. These bugs makes NR crash, so I'm looking for a way to restart NR after crashing occuring under DOS, how can I…

---

## [Function Editor Font Problem with Firefox](https://discourse.nodered.org/t/function-editor-font-problem-with-firefox/89945)

<div class="topic-metadata">

**Author:** [@r375ch](https://discourse.nodered.org/u/r375ch)\
**Replies:** 1\
**Last updated:** [2 August 2024 09:31 UTC](https://discourse.nodered.org/t/function-editor-font-problem-with-firefox/89945 "2024-08-02T09:31:15Z")

</div>

I have an issue with the font rendering of numbers in the Code Editor. Chrome shows what I expected, using the "Monospace" font: Firefox shows what I expect only if I deactive the permission to let the page load its …

---

## [Help with PING flow](https://discourse.nodered.org/t/help-with-ping-flow/89936)

<div class="topic-metadata">

**Author:** [@deanfourie1](https://discourse.nodered.org/u/deanfourie1)\
**Replies:** 3\
**Last updated:** [2 August 2024 00:11 UTC](https://discourse.nodered.org/t/help-with-ping-flow/89936 "2024-08-02T00:11:25Z")

</div>

Hi there, I am trying to use the ping component to trigger a GPIO output on my Raspberry PI. Using the PING component, I want to trigger the output when the device is unreachable, (false) Then, turn the output off aga…

---

## [Viability for this? Touch screen login/out project](https://discourse.nodered.org/t/viability-for-this-touch-screen-login-out-project/88966)

<div class="topic-metadata">

**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 124\
**Last updated:** [1 August 2024 09:36 UTC](https://discourse.nodered.org/t/viability-for-this-touch-screen-login-out-project/88966 "2024-08-01T09:36:50Z")

</div>

I am kinda cringing at the politics involved, but it is a challenge kind of in my world just now. I'm in a club and there is a sign in/out book. It is not kept well, and other suggestions are being asked. A 12 inch to…

---

## [Node Red as Public facing websocket server](https://discourse.nodered.org/t/node-red-as-public-facing-websocket-server/89833)

<div class="topic-metadata">

**Author:** [@SoundRegz](https://discourse.nodered.org/u/SoundRegz)\
**Replies:** 3\
**Last updated:** [1 August 2024 09:21 UTC](https://discourse.nodered.org/t/node-red-as-public-facing-websocket-server/89833 "2024-08-01T09:21:08Z")

</div>

Hello, I would like to use node red as a public facing websocket server. Essentially I have a few client apps out on general internet that need to exchange messages. I have this working on a LAN at home, but would like …

---

## [Error:Unknown email when using firebase](https://discourse.nodered.org/t/error-unknown-email-when-using-firebase/89857)

<div class="topic-metadata">

**Author:** [@KBujang](https://discourse.nodered.org/u/KBujang)\
**Replies:** 15\
**Last updated:** [1 August 2024 07:41 UTC](https://discourse.nodered.org/t/error-unknown-email-when-using-firebase/89857 "2024-08-01T07:41:46Z")

</div>

Hi, im newbie here, my problem is when I try to deploy firebase, the error Unknown email.I set everything correctly follow firebase instruction.

---

## [If json element is false do nothing](https://discourse.nodered.org/t/if-json-element-is-false-do-nothing/89897)

<div class="topic-metadata">

**Author:** [@MichaelRenner](https://discourse.nodered.org/u/MichaelRenner)\
**Replies:** 5\
**Last updated:** [1 August 2024 07:39 UTC](https://discourse.nodered.org/t/if-json-element-is-false-do-nothing/89897 "2024-08-01T07:39:21Z")

</div>

Moin, I am using the tankerkoenig node to fetch gas station prices. The result is in json format, the value "prices" goes into an InfluxDB and grafana. Example for the json: { "id": "602a47f1-7182-46b6-bcf5-25c7a1d47…

---

## [Switch-Node problem](https://discourse.nodered.org/t/switch-node-problem/89921)

<div class="topic-metadata">

**Author:** [@pio007](https://discourse.nodered.org/u/pio007)\
**Replies:** 7\
**Last updated:** [1 August 2024 06:18 UTC](https://discourse.nodered.org/t/switch-node-problem/89921 "2024-08-01T06:18:33Z")

</div>

Hello, I have a problem with a switch node or a question for understanding. I have an input value from a Zigbee sensor ("feuchte"). From a visualization I have an input value ("schwelle" which I first convert into a n…

[Previous page](https://discourse.nodered.org/c/general/7.md?page=91)

[Next page](https://discourse.nodered.org/c/general/7.md?page=93)