# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=16

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

**Page:** 17

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## [Node-red-matter-controller is giving me a headache](https://discourse.nodered.org/t/node-red-matter-controller-is-giving-me-a-headache/100001)

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**Author:** [@hominidae](https://discourse.nodered.org/u/hominidae)\
**Replies:** 4\
**Last updated:** [29 December 2025 16:12 UTC](https://discourse.nodered.org/t/node-red-matter-controller-is-giving-me-a-headache/100001 "2025-12-29T16:12:55Z")

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Hi Folks, I've started some testing with node-red-matter-controller from @sammachin and after some trial and error, I have it working, but the experience is a bit flaky. TL:DR -\> After moving into a new home, I started…

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## [Would someone be willing to help me update a github project to fix a bug?](https://discourse.nodered.org/t/would-someone-be-willing-to-help-me-update-a-github-project-to-fix-a-bug/100026)

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**Author:** [@Nodi.Rubrum](https://discourse.nodered.org/u/Nodi.Rubrum)\
**Replies:** 5\
**Last updated:** [28 December 2025 03:37 UTC](https://discourse.nodered.org/t/would-someone-be-willing-to-help-me-update-a-github-project-to-fix-a-bug/100026 "2025-12-28T03:37:17Z")

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The lgtv-ip-control project on github apparently has been abandoned which is unfortunate, because there are several other projects that leverage this one. BitFocus Companion for example. I have figured out the bug, whi…

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## [Delay node - rate limit strange behaviour. Confusing limit rates. Is it lying us (a little)?](https://discourse.nodered.org/t/delay-node-rate-limit-strange-behaviour-confusing-limit-rates-is-it-lying-us-a-little/100005)

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**Author:** [@ortegafernando](https://discourse.nodered.org/u/ortegafernando)\
**Replies:** 11\
**Last updated:** [26 December 2025 14:39 UTC](https://discourse.nodered.org/t/delay-node-rate-limit-strange-behaviour-confusing-limit-rates-is-it-lying-us-a-little/100005 "2025-12-26T14:39:12Z")

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Hi everyone, I’m having a question about the Delay node in Node-RED when using the rate limit option. (Node red version 4.0.8) For example, I configured the node to 10 messages per minute, but the behavior is not what …

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## [Node-RED: Infinite path appending during recursive FTP directory traversal](https://discourse.nodered.org/t/node-red-infinite-path-appending-during-recursive-ftp-directory-traversal/100019)

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**Author:** [@manel](https://discourse.nodered.org/u/manel)\
**Replies:** 4\
**Last updated:** [25 December 2025 07:43 UTC](https://discourse.nodered.org/t/node-red-infinite-path-appending-during-recursive-ftp-directory-traversal/100019 "2025-12-25T07:43:45Z")

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I am using Node-RED (v2.1.4) and node.js v14.17.0 to monitor an FTP server (FileZilla) where a Dahua IP camera uploads snapshots. By default, the camera creates a deeply nested directory structure: DEVICE\_ID / YYYY-MM-D…

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## [Possible bug with TCP nodes?](https://discourse.nodered.org/t/possible-bug-with-tcp-nodes/100008)

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**Author:** [@Nodi.Rubrum](https://discourse.nodered.org/u/Nodi.Rubrum)\
**Replies:** 7\
**Last updated:** [24 December 2025 23:00 UTC](https://discourse.nodered.org/t/possible-bug-with-tcp-nodes/100008 "2025-12-24T23:00:35Z")

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Have a flow that 'watches' a device on a given (TCP) IP and Port. If the device is turned off (or even turned on later), my flow knows via a successful or failed ping. All good. However, the TCP IN and TCP OUT nodes n…

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## [Thanks for being the friendliest forum around!](https://discourse.nodered.org/t/thanks-for-being-the-friendliest-forum-around/100018)

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**Author:** [@Sean-McG](https://discourse.nodered.org/u/Sean-McG)\
**Replies:** 2\
**Last updated:** [24 December 2025 22:49 UTC](https://discourse.nodered.org/t/thanks-for-being-the-friendliest-forum-around/100018 "2025-12-24T22:49:15Z")

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Hope you all have a great time, and Santa brings all the tech you wanted. :wink: Thanks for being the friendliest forum around !

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## [Newbie asking for help](https://discourse.nodered.org/t/newbie-asking-for-help/99944)

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**Author:** [@arny](https://discourse.nodered.org/u/arny)\
**Replies:** 3\
**Last updated:** [24 December 2025 14:06 UTC](https://discourse.nodered.org/t/newbie-asking-for-help/99944 "2025-12-24T14:06:37Z")

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Hi, I am new to HA and Node-Red. I have created a simple automation for photovoltaics. It involves switching on the pool pump and switching panels (I have more power from the panels than the maximum MPPT input... we don…

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## [Raspian Trixie NodeJS problem](https://discourse.nodered.org/t/raspian-trixie-nodejs-problem/99998)

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**Author:** [@Becker](https://discourse.nodered.org/u/Becker)\
**Replies:** 21\
**Last updated:** [23 December 2025 23:52 UTC](https://discourse.nodered.org/t/raspian-trixie-nodejs-problem/99998 "2025-12-23T23:52:21Z")

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Hi, After encountering problems with an installation of NodeJS 20, I thought I'd do it properly this time: install NodeJS first, then Node-RED. Unfortunately, the installation script removes the existing version and rei…

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## [node-red-contrib-matter-dynamic 0.2.4 with WindowCoveringDevice](https://discourse.nodered.org/t/node-red-contrib-matter-dynamic-0-2-4-with-windowcoveringdevice/99903)

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**Author:** [@MLSDOR](https://discourse.nodered.org/u/MLSDOR)\
**Replies:** 1\
**Last updated:** [22 December 2025 22:56 UTC](https://discourse.nodered.org/t/node-red-contrib-matter-dynamic-0-2-4-with-windowcoveringdevice/99903 "2025-12-22T22:56:17Z")

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Did anyone tested window blinds (WindowCoveringDevice) with "node-red-contrib-matter-dynamic 0.2.4"? What is the JSON configuration for it?

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## [Lazy lint on return?](https://discourse.nodered.org/t/lazy-lint-on-return/99979)

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**Author:** [@ThingsTinkerer](https://discourse.nodered.org/u/ThingsTinkerer)\
**Replies:** 3\
**Last updated:** [22 December 2025 16:11 UTC](https://discourse.nodered.org/t/lazy-lint-on-return/99979 "2025-12-22T16:11:21Z")

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Was refactoring some code and naturally linter triggered and show invalid name. This happened while assigning variable (const a = b), however it never linted on return (return b)! What's going on here? Is it more complic…

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## [Update issues with NR 4.1.1](https://discourse.nodered.org/t/update-issues-with-nr-4-1-1/99473)

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**Author:** [@RueCo](https://discourse.nodered.org/u/RueCo)\
**Replies:** 8\
**Last updated:** [22 December 2025 10:02 UTC](https://discourse.nodered.org/t/update-issues-with-nr-4-1-1/99473 "2025-12-22T10:02:31Z")

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Having updated to NR 4.1.1 on a debian bullseye pi machine and trying to remove a note in the pallet manager I get the following error: 2025-10-21T21:31:44.596Z remove: node-red-contrib-enocean 2025-10-21T21:31:43.613Z …

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## [How to reliably sequence Modbus requests](https://discourse.nodered.org/t/how-to-reliably-sequence-modbus-requests/100003)

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**Author:** [@Breizh13](https://discourse.nodered.org/u/Breizh13)\
**Replies:** 3\
**Last updated:** [21 December 2025 13:17 UTC](https://discourse.nodered.org/t/how-to-reliably-sequence-modbus-requests/100003 "2025-12-21T13:17:17Z")

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Hello, or good evening, depending on the time zone... I think I'm posting in the right section... I'm fairly new to Node-Red, but I'm enjoying it and making good progress with my project. Basically, it's a solar router…

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## [Converting Python To NodeRed A Simple Example](https://discourse.nodered.org/t/converting-python-to-nodered-a-simple-example/99994)

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**Author:** [@Nodi.Rubrum](https://discourse.nodered.org/u/Nodi.Rubrum)\
**Replies:** 3\
**Last updated:** [21 December 2025 06:55 UTC](https://discourse.nodered.org/t/converting-python-to-nodered-a-simple-example/99994 "2025-12-21T06:55:30Z")

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Looking for suggestions in converting the below python to NR: import socket import sys import time # #https://support.tesmart.com/hc/en-us/categories/7606227532953-Download # # --- Configuration --- SWITCH\_IP = "192.1…

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## [Unable to start node-red post domain change](https://discourse.nodered.org/t/unable-to-start-node-red-post-domain-change/100000)

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**Author:** [@joey\_ind](https://discourse.nodered.org/u/joey_ind)\
**Replies:** 8\
**Last updated:** [20 December 2025 12:38 UTC](https://discourse.nodered.org/t/unable-to-start-node-red-post-domain-change/100000 "2025-12-20T12:38:55Z")

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Hi folks, I am absolutely going bonkers after a domain change done on a PC (windows) and post which I am not able to start node-red via cmd-command. I can see the node files in .node folder but the application wont star…

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## [Manage an object dynamically](https://discourse.nodered.org/t/manage-an-object-dynamically/99969)

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**Author:** [@GiovanniG](https://discourse.nodered.org/u/GiovanniG)\
**Replies:** 3\
**Last updated:** [19 December 2025 17:52 UTC](https://discourse.nodered.org/t/manage-an-object-dynamically/99969 "2025-12-19T17:52:21Z")

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Hi, let's consider to have 8 messages to output from a function, they are all initally set with payload:false Now I want that one of 8, depending on the msg.topic input is turning to null, how to? let msg1,msg2,msg3,ms…

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## [Node-RED Freezing Issue After Running for a Period of Time](https://discourse.nodered.org/t/node-red-freezing-issue-after-running-for-a-period-of-time/99972)

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**Author:** [@superaugus](https://discourse.nodered.org/u/superaugus)\
**Replies:** 7\
**Last updated:** [19 December 2025 07:54 UTC](https://discourse.nodered.org/t/node-red-freezing-issue-after-running-for-a-period-of-time/99972 "2025-12-19T07:54:41Z")

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The main operation flow of my Node-RED program is as follows: Act as a client to connect to access control systems and elevators, and conduct command interaction with them. Act as a scheduling center to subscribe to do…

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## [100% CPU Issues - Indicating And Finding Possible Cause](https://discourse.nodered.org/t/100-cpu-issues-indicating-and-finding-possible-cause/99980)

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**Author:** [@MyRandomThoughts](https://discourse.nodered.org/u/MyRandomThoughts)\
**Replies:** 1\
**Last updated:** [18 December 2025 17:41 UTC](https://discourse.nodered.org/t/100-cpu-issues-indicating-and-finding-possible-cause/99980 "2025-12-18T17:41:52Z")

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There have been a few topics on here about Node-RED consuming 100% CPU, with no apparent reason why. The two main reasons for these issues are MQTT modes in a loop and dodgy code. However, there is nothing in Node-RED …

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## [Use Node-Red for send data from AS400 to PLC](https://discourse.nodered.org/t/use-node-red-for-send-data-from-as400-to-plc/99970)

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**Author:** [@Poonoi](https://discourse.nodered.org/u/Poonoi)\
**Replies:** 1\
**Last updated:** [18 December 2025 13:25 UTC](https://discourse.nodered.org/t/use-node-red-for-send-data-from-as400-to-plc/99970 "2025-12-18T13:25:28Z")

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Anyone have experience to use Node-Red for send/receive data between AS400 (DB2) and PLC

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## [Transfer of an integer from HA --\> NodeRed --\> Modbus --\> CMI (TA)](https://discourse.nodered.org/t/transfer-of-an-integer-from-ha-nodered-modbus-cmi-ta/99932)

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**Author:** [@ICEMAN77](https://discourse.nodered.org/u/ICEMAN77)\
**Replies:** 1\
**Last updated:** [17 December 2025 23:27 UTC](https://discourse.nodered.org/t/transfer-of-an-integer-from-ha-nodered-modbus-cmi-ta/99932 "2025-12-17T23:27:29Z")

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Hi, I am a bit new to NodeRed. I want so send an Integer regularly on change from HomeAssistant to my C.M.I from Technische Alternative. My HomeAssistant is running on a dedicated Virtualbox VM. The Virtualbox runs in Wi…

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## [Modbus Write not working when its status is not "active"](https://discourse.nodered.org/t/modbus-write-not-working-when-its-status-is-not-active/99963)

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**Author:** [@Milk](https://discourse.nodered.org/u/Milk)\
**Replies:** 3\
**Last updated:** [17 December 2025 21:43 UTC](https://discourse.nodered.org/t/modbus-write-not-working-when-its-status-is-not-active/99963 "2025-12-17T21:43:14Z")

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I have a switch connected to a Modbus Write coil where it is only working once its in the "active" stage (que-reconnect-initialize-connected-active). At every other stage sending a 1 or 0 out would get missed. Is there…

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## [Large number of flows](https://discourse.nodered.org/t/large-number-of-flows/99966)

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**Author:** [@Jimbo84](https://discourse.nodered.org/u/Jimbo84)\
**Replies:** 6\
**Last updated:** [17 December 2025 15:37 UTC](https://discourse.nodered.org/t/large-number-of-flows/99966 "2025-12-17T15:37:03Z")

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Is there a maximum suggested number of flows within NodeRed? We are looking at using it with some workflow nodes from Objectif Lune, we will however have over 200 flows possibly so just wondering how the system would co…

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## [Replicate CURL -F arguments for plate-recognizer on-prem API call](https://discourse.nodered.org/t/replicate-curl-f-arguments-for-plate-recognizer-on-prem-api-call/99947)

<div class="topic-metadata">

**Author:** [@glossyio](https://discourse.nodered.org/u/glossyio)\
**Replies:** 2\
**Last updated:** [16 December 2025 00:48 UTC](https://discourse.nodered.org/t/replicate-curl-f-arguments-for-plate-recognizer-on-prem-api-call/99947 "2025-12-16T00:48:34Z")

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This should be an easy-ball question for folks, but it's not connecting for me right now, so I would appreciate help. How do I build a node-red message that goes to an http request node that represents the curl below? T…

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## [Suggested Raspberry Pi Zero 2W setup using Node-Red and GPIO](https://discourse.nodered.org/t/suggested-raspberry-pi-zero-2w-setup-using-node-red-and-gpio/99926)

<div class="topic-metadata">

**Author:** [@JsTechX](https://discourse.nodered.org/u/JsTechX)\
**Replies:** 6\
**Last updated:** [14 December 2025 17:46 UTC](https://discourse.nodered.org/t/suggested-raspberry-pi-zero-2w-setup-using-node-red-and-gpio/99926 "2025-12-14T17:46:10Z")

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Seems after hours and days of scouring the web on this topic for both the Zero-2W and Zero1.x, there’s mixed info as to what is best setup to support GPIO as of 2025. Lots of web info from past year or so indicate possi…

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## [Node-red-node-pi-gpiod Read initial state of pin unreliable](https://discourse.nodered.org/t/node-red-node-pi-gpiod-read-initial-state-of-pin-unreliable/99806)

<div class="topic-metadata">

**Author:** [@colincoder](https://discourse.nodered.org/u/colincoder)\
**Replies:** 21\
**Last updated:** [14 December 2025 17:20 UTC](https://discourse.nodered.org/t/node-red-node-pi-gpiod-read-initial-state-of-pin-unreliable/99806 "2025-12-14T17:20:46Z")

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I have frequently used the node module called node-red-node-pi-gpio to read and write to the GPIO bus. However, the input node did not work reliably on my Pi W 2, particularly on Deploys. So I decided to try node-red-n…

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## [Flow/node to fade light in and out](https://discourse.nodered.org/t/flow-node-to-fade-light-in-and-out/99940)

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**Author:** [@cymplecy](https://discourse.nodered.org/u/cymplecy)\
**Replies:** 7\
**Last updated:** [14 December 2025 12:33 UTC](https://discourse.nodered.org/t/flow-node-to-fade-light-in-and-out/99940 "2025-12-14T12:33:49Z")

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I'm looking for something that will output a value from 0 to 100 and then back down to 0 and repeat Anyone done/used/seen such a thing?

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## [Javascript Object.keys() help](https://discourse.nodered.org/t/javascript-object-keys-help/99934)

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**Author:** [@Colin](https://discourse.nodered.org/u/Colin)\
**Replies:** 3\
**Last updated:** [12 December 2025 11:41 UTC](https://discourse.nodered.org/t/javascript-object-keys-help/99934 "2025-12-12T11:41:56Z")

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I must be missing something obvious, can someone explain, please, how this code const hasExtraProps = message =\> { const allowed = \['\_msgid', 'ui\_update', 'class', 'visible', 'enabled'\] console.log(\`message: ${JSON.…

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## [Connection error on telnet-send crashes node-red](https://discourse.nodered.org/t/connection-error-on-telnet-send-crashes-node-red/99928)

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**Author:** [@Bond246](https://discourse.nodered.org/u/Bond246)\
**Replies:** 5\
**Last updated:** [12 December 2025 09:11 UTC](https://discourse.nodered.org/t/connection-error-on-telnet-send-crashes-node-red/99928 "2025-12-12T09:11:52Z")

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Hello, i have a node-red instance running on kubernetes which works really fine in general. On that instance i'm controlling some media services for tv-broadcasting and one of it is CasparCG which uses AMCP protocol. T…

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## [Matter Smart Plugs with Node Red](https://discourse.nodered.org/t/matter-smart-plugs-with-node-red/99829)

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**Author:** [@Inq](https://discourse.nodered.org/u/Inq)\
**Replies:** 14\
**Last updated:** [12 December 2025 01:15 UTC](https://discourse.nodered.org/t/matter-smart-plugs-with-node-red/99829 "2025-12-12T01:15:16Z")

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I have several DIY current sensors attached to my circuit breaker box using MQTT so I can monitor them in Node-Red. These I really like since I can use them on 120VAC or 240VAC, but I was looking for something so I didn…

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## [Copy and move files using node-red-contrib-filesystem](https://discourse.nodered.org/t/copy-and-move-files-using-node-red-contrib-filesystem/99896)

<div class="topic-metadata">

**Author:** [@Triman5](https://discourse.nodered.org/u/Triman5)\
**Replies:** 25\
**Last updated:** [11 December 2025 17:52 UTC](https://discourse.nodered.org/t/copy-and-move-files-using-node-red-contrib-filesystem/99896 "2025-12-11T17:52:18Z")

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Hello, I'm new to Node-Red and I'm looking for help on how to move a file from an N:\\ drive to C:\\image folder. However I get and error TypeError: The "path" argument must be of type string. Received undefined. I plan …

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## [Ui-page dynamic class](https://discourse.nodered.org/t/ui-page-dynamic-class/99918)

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**Author:** [@jbudd](https://discourse.nodered.org/u/jbudd)\
**Replies:** 8\
**Last updated:** [11 December 2025 13:45 UTC](https://discourse.nodered.org/t/ui-page-dynamic-class/99918 "2025-12-11T13:45:35Z")

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You can give a widget a custom class "foo": And in dev tools you can see Inject ui\_update = {"class": "bar"}, then you see And with a ui-page, you can set a custom class "foo" and the dev tools shows it I…

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