# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=42

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

**Page:** 43

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## [Unidentified error message](https://discourse.nodered.org/t/unidentified-error-message/96543)

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**Author:** [@manjha](https://discourse.nodered.org/u/manjha)\
**Replies:** 22\
**Last updated:** [21 April 2025 20:44 UTC](https://discourse.nodered.org/t/unidentified-error-message/96543 "2025-04-21T20:44:47Z")

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I have been toying with several different flows, and am now getting unidentified error messages. Does anyone recognize where this is coming from? msg : string\[74\] "HttpActions:reportState(): skipped reporting states, n…

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## [Oauth/OpenId Login with Keycloak based on roles](https://discourse.nodered.org/t/oauth-openid-login-with-keycloak-based-on-roles/96690)

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**Author:** [@sara-aziz](https://discourse.nodered.org/u/sara-aziz)\
**Replies:** 0\
**Last updated:** [21 April 2025 18:55 UTC](https://discourse.nodered.org/t/oauth-openid-login-with-keycloak-based-on-roles/96690 "2025-04-21T18:55:14Z")

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Hi Everyone, I’m integrating Keycloak authentication into Node-RED using passport-keycloak-oauth2-oidc. The authentication flow is successful, and I can see the correct user profile and roles returned from Keycloak. How…

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## [Node: msg.payload msg.payload : undefined](https://discourse.nodered.org/t/node-msg-payload-msg-payload-undefined/96380)

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**Author:** [@lidia](https://discourse.nodered.org/u/lidia)\
**Replies:** 13\
**Last updated:** [21 April 2025 15:08 UTC](https://discourse.nodered.org/t/node-msg-payload-msg-payload-undefined/96380 "2025-04-21T15:08:42Z")

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Hi, I'm testing node red and I've created a signal called data from the prosys server, and I've connected it to this client, but I don't know why it doesn't read the number value. It detects the message but tells me: nod…

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## [Has Anyone Used Node-RED for Machine Learning Projects?](https://discourse.nodered.org/t/has-anyone-used-node-red-for-machine-learning-projects/96672)

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**Author:** [@Sanders](https://discourse.nodered.org/u/Sanders)\
**Replies:** 2\
**Last updated:** [21 April 2025 14:29 UTC](https://discourse.nodered.org/t/has-anyone-used-node-red-for-machine-learning-projects/96672 "2025-04-21T14:29:44Z")

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Hi everyone, I’ve been experimenting with Node-RED for some home automation and IoT projects, and I’m really enjoying how visual and flexible it is. Recently, I started getting interested in machine learning, and I’…

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## [Run node-red instance as a service with dedicated folder](https://discourse.nodered.org/t/run-node-red-instance-as-a-service-with-dedicated-folder/96602)

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**Author:** [@BambosD](https://discourse.nodered.org/u/BambosD)\
**Replies:** 15\
**Last updated:** [21 April 2025 13:47 UTC](https://discourse.nodered.org/t/run-node-red-instance-as-a-service-with-dedicated-folder/96602 "2025-04-21T13:47:18Z")

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Hello everyone, i have installed node-red system-wide on debian and can start with node-red-start on 1880. The default folder installation is under /home/user/.node-red (hidden with dot). also the service file is on /…

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## [Best way to organize large flows?](https://discourse.nodered.org/t/best-way-to-organize-large-flows/96517)

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**Author:** [@Sanders](https://discourse.nodered.org/u/Sanders)\
**Replies:** 15\
**Last updated:** [21 April 2025 09:30 UTC](https://discourse.nodered.org/t/best-way-to-organize-large-flows/96517 "2025-04-21T09:30:46Z")

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Hi all, My project is starting to get messy with a lot of flows. Any tips on how to keep things clean and organized in Node-RED? Thanks!

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## [Node-RED started, but with empty page](https://discourse.nodered.org/t/node-red-started-but-with-empty-page/96669)

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**Author:** [@dong](https://discourse.nodered.org/u/dong)\
**Replies:** 10\
**Last updated:** [21 April 2025 09:25 UTC](https://discourse.nodered.org/t/node-red-started-but-with-empty-page/96669 "2025-04-21T09:25:21Z")

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Node-RED: v4.0.9 Node.js: v22.14.0 NPM: v10.2.2 today I installed the same Nodejs and Node-RED in two different places for project testing. One in my own laptop, another in a lab server (where constraints exists …

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## [Import Temperature Information from Shelly Plus 2PM, build Thermostat in Red Node](https://discourse.nodered.org/t/import-temperature-information-from-shelly-plus-2pm-build-thermostat-in-red-node/96668)

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**Author:** [@mountain](https://discourse.nodered.org/u/mountain)\
**Replies:** 2\
**Last updated:** [21 April 2025 07:51 UTC](https://discourse.nodered.org/t/import-temperature-information-from-shelly-plus-2pm-build-thermostat-in-red-node/96668 "2025-04-21T07:51:08Z")

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Hi, my name is Mountain and I'm pretty new to red node, nevertheless I managed to get most of my planned functions working. I am running a Victron Multiplus II GX system and want to use Shelly to automize various functio…

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## [How to format JSON output in table to send in the body of the email](https://discourse.nodered.org/t/how-to-format-json-output-in-table-to-send-in-the-body-of-the-email/96661)

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**Author:** [@VaraVerde-hub](https://discourse.nodered.org/u/VaraVerde-hub)\
**Replies:** 3\
**Last updated:** [21 April 2025 01:16 UTC](https://discourse.nodered.org/t/how-to-format-json-output-in-table-to-send-in-the-body-of-the-email/96661 "2025-04-21T01:16:30Z")

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Hi guys. I need help to form a JSON output, I need to format it in a table for the body of the email that will be sent. Can anyone help me with any tips? Thank you for your attention. this is my test flow: How is …

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## [Reorder mqtt messages JK BMS - ESP32 - MQTT - Node RED - Influxdb](https://discourse.nodered.org/t/reorder-mqtt-messages-jk-bms-esp32-mqtt-node-red-influxdb/96655)

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**Author:** [@ralftze](https://discourse.nodered.org/u/ralftze)\
**Replies:** 7\
**Last updated:** [20 April 2025 20:34 UTC](https://discourse.nodered.org/t/reorder-mqtt-messages-jk-bms-esp32-mqtt-node-red-influxdb/96655 "2025-04-20T20:34:51Z")

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Dear All, could somebody be so kind helping me with the following node red challenge: I have a JK BMS care for my batteries. The BMS can be read from ESP32 via Bluetooth. ESP32 reads values from BMS and sends a variety…

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## [Context variable that (partly) references other context variables dynamically](https://discourse.nodered.org/t/context-variable-that-partly-references-other-context-variables-dynamically/96624)

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**Author:** [@dierochade](https://discourse.nodered.org/u/dierochade)\
**Replies:** 29\
**Last updated:** [20 April 2025 10:00 UTC](https://discourse.nodered.org/t/context-variable-that-partly-references-other-context-variables-dynamically/96624 "2025-04-20T10:00:04Z")

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I run node red in conjunction with home assistant. I would like to have a context variable (like flow.mydatacollection) that contains a json that has normal key-value pairs (that are "manually" updated) and references t…

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## [Intervall start/stop of water circulation](https://discourse.nodered.org/t/intervall-start-stop-of-water-circulation/96501)

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**Author:** [@AloisBachmeier](https://discourse.nodered.org/u/AloisBachmeier)\
**Replies:** 3\
**Last updated:** [19 April 2025 16:25 UTC](https://discourse.nodered.org/t/intervall-start-stop-of-water-circulation/96501 "2025-04-19T16:25:37Z")

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Hi all, at several times within 24h periode I want to start a start/stop sequence. This sequence should be like: 2min on / 2min off / 2min on .... for 10 minutes. Any idea how to implement? Thanks!

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## [Translating payload not showing in text box dashboard](https://discourse.nodered.org/t/translating-payload-not-showing-in-text-box-dashboard/96646)

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**Author:** [@thomasvjohansen](https://discourse.nodered.org/u/thomasvjohansen)\
**Replies:** 2\
**Last updated:** [19 April 2025 10:57 UTC](https://discourse.nodered.org/t/translating-payload-not-showing-in-text-box-dashboard/96646 "2025-04-19T10:57:34Z")

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Trying to monitor my gardena lawnmower, I have a payload (msg.payload\[0\].devices\[0\].services\[0\].activity.value) with activity text, I want to translate and show in text field but it will not show. It gets translated in …

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## [Help needed for alarm checking](https://discourse.nodered.org/t/help-needed-for-alarm-checking/96539)

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**Author:** [@Haithamk](https://discourse.nodered.org/u/Haithamk)\
**Replies:** 2\
**Last updated:** [18 April 2025 18:10 UTC](https://discourse.nodered.org/t/help-needed-for-alarm-checking/96539 "2025-04-18T18:10:12Z")

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Gent I am new to node red I want to send WhatsApp message when the alarm change state The payload that i get from the alarm device is "{"payload":{"arm\_state":"arming","detail":{"sid":2,"name":"Away Mode"}}}" I want…

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## [Search Flows results bug (I think)](https://discourse.nodered.org/t/search-flows-results-bug-i-think/96627)

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**Author:** [@LosinIt](https://discourse.nodered.org/u/LosinIt)\
**Replies:** 4\
**Last updated:** [18 April 2025 06:33 UTC](https://discourse.nodered.org/t/search-flows-results-bug-i-think/96627 "2025-04-18T06:33:21Z")

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After searching for a term the lower left of the editor window has a way to navigate between the results. Trouble is that the nodes don't highlight (blink) in any way and I think they are intended to. It DOES switch to t…

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## [Node-red-contrib-mssql-plus-0.12.2 - Failed to connect](https://discourse.nodered.org/t/node-red-contrib-mssql-plus-0-12-2-failed-to-connect/96625)

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**Author:** [@jumpier](https://discourse.nodered.org/u/jumpier)\
**Replies:** 3\
**Last updated:** [17 April 2025 21:45 UTC](https://discourse.nodered.org/t/node-red-contrib-mssql-plus-0-12-2-failed-to-connect/96625 "2025-04-17T21:45:55Z")

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Hi to everybody i've try to open connection with local DB SQL Server Express Edition v2019 (the SQL Server is installed on the same computer where i execute Node-Red). I've download and install a node-red-contrib-mssql…

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## [Pros and Cons about using "custom" Functions vs the basic set of nodes](https://discourse.nodered.org/t/pros-and-cons-about-using-custom-functions-vs-the-basic-set-of-nodes/2959)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 24\
**Last updated:** [19 September 2018 03:52 UTC](https://discourse.nodered.org/t/pros-and-cons-about-using-custom-functions-vs-the-basic-set-of-nodes/2959 "2018-09-19T03:52:10Z")

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I have been a busy little person with a couple of things I want to get done in NR. (Remote machine monitoring/health ping and condition for instance) This got me thinking: What are the pros and cons of writing a lot o…

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## [Failed to connect to OpenMV’s serial port](https://discourse.nodered.org/t/failed-to-connect-to-openmv-s-serial-port/96619)

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**Author:** [@Triman5](https://discourse.nodered.org/u/Triman5)\
**Replies:** 0\
**Last updated:** [17 April 2025 13:27 UTC](https://discourse.nodered.org/t/failed-to-connect-to-openmv-s-serial-port/96619 "2025-04-17T13:27:39Z")

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Hello, Has anyone used Node-Red to connect to an OpenMV board? I could use some help connecting to an OpenMV board. I’m running Node-Red on windows 10, and using a Python script to connect to the OpenMV board. When No…

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## [ONE-drive upload](https://discourse.nodered.org/t/one-drive-upload/96616)

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**Author:** [@GBROKO](https://discourse.nodered.org/u/GBROKO)\
**Replies:** 4\
**Last updated:** [17 April 2025 12:19 UTC](https://discourse.nodered.org/t/one-drive-upload/96616 "2025-04-17T12:19:29Z")

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I would like to use the OneDrive node to automatically synchronize something locally from the computer to a OneDrive folder. For the options, I set access via drive but I'm not sure about the configuration and I get the …

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## [Model Context Protocol (MCP) for Node-RED?](https://discourse.nodered.org/t/model-context-protocol-mcp-for-node-red/95882)

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**Author:** [@gregorius](https://discourse.nodered.org/u/gregorius)\
**Replies:** 12\
**Last updated:** [17 April 2025 10:48 UTC](https://discourse.nodered.org/t/model-context-protocol-mcp-for-node-red/95882 "2025-04-17T10:48:34Z")

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Hi There, Is anyone working on an MCP layer for Node-RED? Details: What is Model Context Protocol (MCP)? How it simplifies AI integrations compared to APIs HN Discussion TL;DR: MCP seems to be a real-time interface…

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## [Block unless value changes](https://discourse.nodered.org/t/block-unless-value-changes/96617)

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**Author:** [@Ohlala68](https://discourse.nodered.org/u/Ohlala68)\
**Replies:** 4\
**Last updated:** [17 April 2025 09:40 UTC](https://discourse.nodered.org/t/block-unless-value-changes/96617 "2025-04-17T09:40:59Z")

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Hello. I have a problem with the Filter-node, and more specific: When I use "Block unless value changes" It works like a charm and I get a SMS everytime the value changes, Great!, ...until I work with another completel…

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## [Convert node.js into node-red](https://discourse.nodered.org/t/convert-node-js-into-node-red/96597)

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**Author:** [@tcsjohnson](https://discourse.nodered.org/u/tcsjohnson)\
**Replies:** 4\
**Last updated:** [17 April 2025 08:12 UTC](https://discourse.nodered.org/t/convert-node-js-into-node-red/96597 "2025-04-17T08:12:37Z")

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Hi All, I have a node.js code which need to use in Node-red as below: Example of DES decryption in javascript/node.js: function decrypt(payload, key) { var payloadstr = payload.toString(); var keyWor…

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## [Raspberry Pi GPIO nodes randomly stop working after redeploying (but not always)](https://discourse.nodered.org/t/raspberry-pi-gpio-nodes-randomly-stop-working-after-redeploying-but-not-always/96557)

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**Author:** [@derek](https://discourse.nodered.org/u/derek)\
**Replies:** 21\
**Last updated:** [17 April 2025 06:30 UTC](https://discourse.nodered.org/t/raspberry-pi-gpio-nodes-randomly-stop-working-after-redeploying-but-not-always/96557 "2025-04-17T06:30:46Z")

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Node-RED version: v4.0.8 Node.js version: v20.19.0 Linux 6.12.20-v7+ arm LE Hello. I am having an issue where NodeRED will seemingly at random stop reading any changes in Raspberry Pi input nodes. Restarting NodeRED fi…

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## [Node-Red on remote PC](https://discourse.nodered.org/t/node-red-on-remote-pc/96505)

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**Author:** [@Sonnyh](https://discourse.nodered.org/u/Sonnyh)\
**Replies:** 20\
**Last updated:** [16 April 2025 21:42 UTC](https://discourse.nodered.org/t/node-red-on-remote-pc/96505 "2025-04-16T21:42:34Z")

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Hi, I have 2 PCs running WIN 11. Both are on the same sub-net. Both have an instance of Node-Red v4.0.9, Node.js v22.14.0. The "main" PC is running Homeseer HS4 v4.2.22.4 I have several Red-Node operations that are tr…

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## [Opcua write ,lost http response](https://discourse.nodered.org/t/opcua-write-lost-http-response/96599)

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**Author:** [@lixiaoli](https://discourse.nodered.org/u/lixiaoli)\
**Replies:** 0\
**Last updated:** [16 April 2025 08:28 UTC](https://discourse.nodered.org/t/opcua-write-lost-http-response/96599 "2025-04-16T08:28:51Z")

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I have a process where data to be written to the PLC is passed in through HTTP in, and then written to the PLC through OPC client's write. After writing, a response is given through HTTP response. However, I found that t…

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## [Node rfm69-radio not showing up in List](https://discourse.nodered.org/t/node-rfm69-radio-not-showing-up-in-list/96521)

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**Author:** [@dlmpryor](https://discourse.nodered.org/u/dlmpryor)\
**Replies:** 9\
**Last updated:** [15 April 2025 22:41 UTC](https://discourse.nodered.org/t/node-rfm69-radio-not-showing-up-in-list/96521 "2025-04-15T22:41:41Z")

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Hello, I am trying to implement "node-red-contrib-rfm69radio" by Andy Flem on a Raspberry PI 4. I was able to install and the Nodes: "rfm69-in", "rfm69-out", show up in the Node List. But "rfm69-radio" Node does not. …

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## [How can I access same flow code from various places?](https://discourse.nodered.org/t/how-can-i-access-same-flow-code-from-various-places/96591)

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**Author:** [@ThingsTinkerer](https://discourse.nodered.org/u/ThingsTinkerer)\
**Replies:** 2\
**Last updated:** [15 April 2025 20:33 UTC](https://discourse.nodered.org/t/how-can-i-access-same-flow-code-from-various-places/96591 "2025-04-15T20:33:47Z")

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I've made a link call successfully, which acts as a sort of singleton. It is used to calculate current season (summer/winter) for controlling a building based on settings stored in context. This can be based on average t…

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## [VirtualDevices do not show up in node-red-contrib-ccu](https://discourse.nodered.org/t/virtualdevices-do-not-show-up-in-node-red-contrib-ccu/96592)

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**Author:** [@DRapp](https://discourse.nodered.org/u/DRapp)\
**Replies:** 0\
**Last updated:** [15 April 2025 19:29 UTC](https://discourse.nodered.org/t/virtualdevices-do-not-show-up-in-node-red-contrib-ccu/96592 "2025-04-15T19:29:34Z")

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Currenty I am using a Homematic CCU3 thru FHEM (which is somewhat outdated). A whole bunch of HmIP-RF thermostats are connected with the CCU3, a lot of them grouped as virtual devices. I just started to use Node-RED on …

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## [How to install and use "node-red-contrib-i2clcd-alt"](https://discourse.nodered.org/t/how-to-install-and-use-node-red-contrib-i2clcd-alt/96585)

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**Author:** [@DonC](https://discourse.nodered.org/u/DonC)\
**Replies:** 7\
**Last updated:** [15 April 2025 16:21 UTC](https://discourse.nodered.org/t/how-to-install-and-use-node-red-contrib-i2clcd-alt/96585 "2025-04-15T16:21:23Z")

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New here and struggling to get a 2004 LCD working. It is based on the I2C F8574T chip. I have tried every node I can find and nothing works. In researching I stubled upon this node in Git: node-red-contrib-i2clcd-alt, …

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## [Permission denied to var folder on Raspberry](https://discourse.nodered.org/t/permission-denied-to-var-folder-on-raspberry/96581)

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**Author:** [@balintpietro](https://discourse.nodered.org/u/balintpietro)\
**Replies:** 4\
**Last updated:** [15 April 2025 12:27 UTC](https://discourse.nodered.org/t/permission-denied-to-var-folder-on-raspberry/96581 "2025-04-15T12:27:45Z")

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Hi Everyone, I would like to use "write file" and "file copy" commands in /var/opt/codesys/PlcLogic/visu/ folder but I got permisson denied error measage. How could I add permisson to Node-RED to edit files in var fold…

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