# Latest

**URL:** https://discourse.nodered.org/latest.md?page=66

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

**Page:** 67

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## [Memory usage grows steadily](https://discourse.nodered.org/t/memory-usage-grows-steadily/97728)

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**Author:** [@pacmanmt](https://discourse.nodered.org/u/pacmanmt)\
**Replies:** 32\
**Last updated:** [29 June 2025 10:35 UTC](https://discourse.nodered.org/t/memory-usage-grows-steadily/97728 "2025-06-29T10:35:32Z")

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I have a Raspi 4B 8GB onto which I run NodeRed, InfluxDB2, Grafana, Mosquitto and ZigBee2MQTT. I am not that much into programming or Linux systems management and I am trying to understand why, every now and then, NodeR…

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## [Manage your jk-bms (1 to 15) with wired rs485 or with an Ip Gateway](https://discourse.nodered.org/t/manage-your-jk-bms-1-to-15-with-wired-rs485-or-with-an-ip-gateway/97859)

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**Author:** [@Jean-Luc](https://discourse.nodered.org/u/Jean-Luc)\
**Replies:** 0\
**Last updated:** [29 June 2025 07:02 UTC](https://discourse.nodered.org/t/manage-your-jk-bms-1-to-15-with-wired-rs485-or-with-an-ip-gateway/97859 "2025-06-29T07:02:07Z")

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Hello, I've written an open source program that lets you read and write parameters for BMS from the JKong company, often referred to as jkbms or jk-bms. You can find it on Github here There is also a topic on my forum …

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## [Why cannot arm-v7 architecture Linux 3.10 download Docker based Node-red？](https://discourse.nodered.org/t/why-cannot-arm-v7-architecture-linux-3-10-download-docker-based-node-red/97856)

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**Author:** [@Yesung](https://discourse.nodered.org/u/Yesung)\
**Replies:** 0\
**Last updated:** [29 June 2025 06:35 UTC](https://discourse.nodered.org/t/why-cannot-arm-v7-architecture-linux-3-10-download-docker-based-node-red/97856 "2025-06-29T06:35:44Z")

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My device architecture is arm-v7, Linux 3.10. I used to download Docker based Node-red using the following command in 2023, but it doesn't work now: root@SMT-ECUa11:~# docker run -v /node\_red\_data:/data --group-add …

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## [Button "Badly formatted buffer"](https://discourse.nodered.org/t/button-badly-formatted-buffer/97493)

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**Author:** [@Hardyhove](https://discourse.nodered.org/u/Hardyhove)\
**Replies:** 7\
**Last updated:** [28 June 2025 21:07 UTC](https://discourse.nodered.org/t/button-badly-formatted-buffer/97493 "2025-06-28T21:07:29Z")

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Hallo. I'm new here as you will recognise by my question. In my project a slider value shall be confirmed by pushing a button before it is sent to the PLC. First of all: It works! But using a debug node an error mess…

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## [Serial In/Out Node problem, but working in Arduino serial monitor](https://discourse.nodered.org/t/serial-in-out-node-problem-but-working-in-arduino-serial-monitor/97846)

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**Author:** [@AungKL](https://discourse.nodered.org/u/AungKL)\
**Replies:** 1\
**Last updated:** [28 June 2025 13:30 UTC](https://discourse.nodered.org/t/serial-in-out-node-problem-but-working-in-arduino-serial-monitor/97846 "2025-06-28T13:30:19Z")

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Hello dude, Good day, I have some problem with Serial In/Out node while sending the message to ttyUSB0 of the raspberry pi 4B board. The setup of the communication is, Fluke 289 \<=\> USB IR cable \[FT232 chip\] \<=\> \[ttyU…

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## [How to use OCPP in Node-Red](https://discourse.nodered.org/t/how-to-use-ocpp-in-node-red/95495)

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**Author:** [@nygma2004](https://discourse.nodered.org/u/nygma2004)\
**Replies:** 52\
**Last updated:** [28 June 2025 10:25 UTC](https://discourse.nodered.org/t/how-to-use-ocpp-in-node-red/95495 "2025-06-28T10:25:41Z")

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There has been a few topics on this with some specific questions, but I am afraid I need some support from the very beginning. I want to communicate with OCPP capable EVSEs. There are 3 of them at (my friends) place. I …

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## [Connections to Node-Red Instances](https://discourse.nodered.org/t/connections-to-node-red-instances/97760)

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**Author:** [@gerrybartley](https://discourse.nodered.org/u/gerrybartley)\
**Replies:** 13\
**Last updated:** [27 June 2025 21:44 UTC](https://discourse.nodered.org/t/connections-to-node-red-instances/97760 "2025-06-27T21:44:13Z")

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Here's something you might find useful. I'm running several instances of Node-RED. This flow displays the number of connections to each instance using the exec node and ss -tn src :port command This is the flow \[{"id"…

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## [Unable to deploy changes on node red](https://discourse.nodered.org/t/unable-to-deploy-changes-on-node-red/97842)

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**Author:** [@Desmond-Zeh](https://discourse.nodered.org/u/Desmond-Zeh)\
**Replies:** 2\
**Last updated:** [27 June 2025 19:13 UTC](https://discourse.nodered.org/t/unable-to-deploy-changes-on-node-red/97842 "2025-06-27T19:13:34Z")

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Hello Team! I am facing difficulties deploying changes made to my project on node-red. Anytime I try to deploy the changes made, the following error message appears in the cmd prompt and blocks the deploy from occurrin…

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## [Issue with node-red-node-pi-neopixel on CM4 / RPi4 with Debian Bookworm 64 Bit](https://discourse.nodered.org/t/issue-with-node-red-node-pi-neopixel-on-cm4-rpi4-with-debian-bookworm-64-bit/97607)

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**Author:** [@Flo](https://discourse.nodered.org/u/Flo)\
**Replies:** 7\
**Last updated:** [27 June 2025 17:27 UTC](https://discourse.nodered.org/t/issue-with-node-red-node-pi-neopixel-on-cm4-rpi4-with-debian-bookworm-64-bit/97607 "2025-06-27T17:27:58Z")

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Hello, im new to NodeRed. have trouble to get the node-red-node-pi-neopixel node working. It was working fine with Debian Bullseye, but there I got issues with my Serial HAT, so I had to upgrade to a more recent kernel…

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## [Node red write into postgres in other format](https://discourse.nodered.org/t/node-red-write-into-postgres-in-other-format/97841)

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**Author:** [@bobdion](https://discourse.nodered.org/u/bobdion)\
**Replies:** 9\
**Last updated:** [27 June 2025 17:01 UTC](https://discourse.nodered.org/t/node-red-write-into-postgres-in-other-format/97841 "2025-06-27T17:01:15Z")

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i got a node that insert a line into the database INSERT INTO public."TB\_ALERTE"("TR\_SENSORNAME", "TR\_INFO","TR\_DATEHEURE") VALUES ( 'SENSOR/ TOILETTE' , 'ON','{{msg.payload}}'); the payload is coming from a function c…

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## [What is the difference between this expressions](https://discourse.nodered.org/t/what-is-the-difference-between-this-expressions/97738)

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**Author:** [@Janvi](https://discourse.nodered.org/u/Janvi)\
**Replies:** 15\
**Last updated:** [27 June 2025 12:20 UTC](https://discourse.nodered.org/t/what-is-the-difference-between-this-expressions/97738 "2025-06-27T12:20:55Z")

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Sorry - I am new with JS. What is the difference between msg.payload = 0; return msg; and msg = {payload:0\]; return msg; and return 0; and maybe to discontinue the flow return null;

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## [Harmony websocket crashing node-red](https://discourse.nodered.org/t/harmony-websocket-crashing-node-red/97691)

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**Author:** [@mark31](https://discourse.nodered.org/u/mark31)\
**Replies:** 7\
**Last updated:** [27 June 2025 12:18 UTC](https://discourse.nodered.org/t/harmony-websocket-crashing-node-red/97691 "2025-06-27T12:18:47Z")

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Been using "node-red-contrib-harmony-websocket" for years. Today it caused node-red crash while in use. When I tried to restart node-red this error in the log... $ Start Node-RED Once Node-RED has started, point a brow…

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## [Set system timezone from node-RED](https://discourse.nodered.org/t/set-system-timezone-from-node-red/97809)

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**Author:** [@aitor](https://discourse.nodered.org/u/aitor)\
**Replies:** 7\
**Last updated:** [27 June 2025 09:35 UTC](https://discourse.nodered.org/t/set-system-timezone-from-node-red/97809 "2025-06-27T09:35:54Z")

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Hi, Im trying to set timezone inside the Docker container from node-RED this way: The idea is to inject timezone so I can easily set system timezone. Im running v4.0.5 on docker. This method throws an error because…

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## [Looking for consultants for Node-RED in financial services (Finshape is hiring)](https://discourse.nodered.org/t/looking-for-consultants-for-node-red-in-financial-services-finshape-is-hiring/84611)

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**Author:** [@petrpko](https://discourse.nodered.org/u/petrpko)\
**Replies:** 8\
**Last updated:** [27 June 2025 08:24 UTC](https://discourse.nodered.org/t/looking-for-consultants-for-node-red-in-financial-services-finshape-is-hiring/84611 "2025-06-27T08:24:49Z")

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Ive been personally using Node-RED for years. Its been so great technology and the community around it that I decided to use it also in business. We've been using Node-RED within our digital platform DBOS (Digital Bank O…

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## [IP camera - install onvif package](https://discourse.nodered.org/t/ip-camera-install-onvif-package/97744)

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**Author:** [@Le-Ze](https://discourse.nodered.org/u/Le-Ze)\
**Replies:** 5\
**Last updated:** [27 June 2025 07:09 UTC](https://discourse.nodered.org/t/ip-camera-install-onvif-package/97744 "2025-06-27T07:09:35Z")

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Hi. How to install the latest ONVIF packages? In Manage Palette is Node-Red-Conrtrib-only 1.0.3 I only have one snapshot node. Thank you

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## [Subflows - passing payload or other properties via environment variable?](https://discourse.nodered.org/t/subflows-passing-payload-or-other-properties-via-environment-variable/97756)

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**Author:** [@SiDtheTurtle](https://discourse.nodered.org/u/SiDtheTurtle)\
**Replies:** 11\
**Last updated:** [26 June 2025 12:28 UTC](https://discourse.nodered.org/t/subflows-passing-payload-or-other-properties-via-environment-variable/97756 "2025-06-26T12:28:05Z")

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Hi folks! Here's my scenario: I'm building automations in Home Assistant, I want to create a reusable function so that any time I want to send a mobile notification, I can use the same set of nodes. I can build this eas…

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## [Nodes dependent on other nodes](https://discourse.nodered.org/t/nodes-dependent-on-other-nodes/97771)

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**Author:** [@TacticalNudge](https://discourse.nodered.org/u/TacticalNudge)\
**Replies:** 10\
**Last updated:** [26 June 2025 11:09 UTC](https://discourse.nodered.org/t/nodes-dependent-on-other-nodes/97771 "2025-06-26T11:09:00Z")

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I'm trying to restructure a monolith library of nodes (50+ different node types) into something that might be a bit more manageable and more focused on use-cases. Basically I have three modules: Core, Foo and Bar. Core …

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## [Dashboard2 - seeking help formatting a msg for the ui-audio node, endpoints don't seem to work](https://discourse.nodered.org/t/dashboard2-seeking-help-formatting-a-msg-for-the-ui-audio-node-endpoints-dont-seem-to-work/97469)

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**Author:** [@no\_mpimpi](https://discourse.nodered.org/u/no_mpimpi)\
**Replies:** 27\
**Last updated:** [26 June 2025 09:59 UTC](https://discourse.nodered.org/t/dashboard2-seeking-help-formatting-a-msg-for-the-ui-audio-node-endpoints-dont-seem-to-work/97469 "2025-06-26T09:59:56Z")

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Hello, I am having success using Piper to generate TTS for voice notifications. I'm able to use a POST message to send text to an instance of Piper running in a Docker container, which returns the spoken text as a binar…

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## [Question re: node-red-contrib-time-range-switch](https://discourse.nodered.org/t/question-re-node-red-contrib-time-range-switch/97798)

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**Author:** [@abrayshaw](https://discourse.nodered.org/u/abrayshaw)\
**Replies:** 1\
**Last updated:** [26 June 2025 09:09 UTC](https://discourse.nodered.org/t/question-re-node-red-contrib-time-range-switch/97798 "2025-06-26T09:09:30Z")

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This question is specifically about the node-red-contrib-time-range-switch node. I've successfully implemented it to control a flow restricted to a time range (I'm on the USA east coast). I've set the range to 7:30 (AM) …

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## [I need assistance with the exec node](https://discourse.nodered.org/t/i-need-assistance-with-the-exec-node/97793)

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**Author:** [@mahsh](https://discourse.nodered.org/u/mahsh)\
**Replies:** 12\
**Last updated:** [25 June 2025 23:24 UTC](https://discourse.nodered.org/t/i-need-assistance-with-the-exec-node/97793 "2025-06-25T23:24:24Z")

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Hi, I'm running Node-RED on Windows and using the "exec" node with the following command to get .jpg file modification details: stat -c "%z %s %n" -- Here's the issue I'm facing: In the first iteration, I modify one .…

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## [ZwaveJS mutiple identical debug messages](https://discourse.nodered.org/t/zwavejs-mutiple-identical-debug-messages/97781)

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**Author:** [@fogmajor](https://discourse.nodered.org/u/fogmajor)\
**Replies:** 2\
**Last updated:** [25 June 2025 22:10 UTC](https://discourse.nodered.org/t/zwavejs-mutiple-identical-debug-messages/97781 "2025-06-25T22:10:20Z")

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Good Evening I have been playing with adding all my Zwave devices to my node-red set up using the Zwavejs node, Unfortunately due to work commitments I cannot seem to get a clean run on it. I just wondered if someone co…

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## [JavaScript heap out of memory after message processing ends](https://discourse.nodered.org/t/javascript-heap-out-of-memory-after-message-processing-ends/97775)

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**Author:** [@KronwarsCZ](https://discourse.nodered.org/u/KronwarsCZ)\
**Replies:** 3\
**Last updated:** [25 June 2025 17:34 UTC](https://discourse.nodered.org/t/javascript-heap-out-of-memory-after-message-processing-ends/97775 "2025-06-25T17:34:05Z")

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Hi everyone! I am facing a weird issue recently after (I believe) a message processing ends. After about 30 seconds after a message is processed, I get a Javascript heap out-of-memory error and my whole docker container…

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## [How to get the property(env value) of subflow with it's node](https://discourse.nodered.org/t/how-to-get-the-property-env-value-of-subflow-with-its-node/97788)

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**Author:** [@peeyee](https://discourse.nodered.org/u/peeyee)\
**Replies:** 1\
**Last updated:** [25 June 2025 11:28 UTC](https://discourse.nodered.org/t/how-to-get-the-property-env-value-of-subflow-with-its-node/97788 "2025-06-25T11:28:03Z")

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I have designed a custom Node-RED node with a filename parameter, which is currently parsed as a plain string. I would like to allow this parameter to accept dynamic values—for example, by referencing a property defined…

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## [Node-red-contrib-opcua Nodes load on the OPCUA server](https://discourse.nodered.org/t/node-red-contrib-opcua-nodes-load-on-the-opcua-server/97785)

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**Author:** [@enginebeat](https://discourse.nodered.org/u/enginebeat)\
**Replies:** 2\
**Last updated:** [25 June 2025 11:12 UTC](https://discourse.nodered.org/t/node-red-contrib-opcua-nodes-load-on-the-opcua-server/97785 "2025-06-25T11:12:07Z")

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Hi All, Been developing a Node-red flow as a client to commission one of my power supplies. the PSU control has an OPCUA Server. I have quite a few variables, but not what I would say excessive at this point, but I'm g…

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## [Opening a webpage in a new window from a button](https://discourse.nodered.org/t/opening-a-webpage-in-a-new-window-from-a-button/97671)

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**Author:** [@bobs409](https://discourse.nodered.org/u/bobs409)\
**Replies:** 2\
**Last updated:** [25 June 2025 10:24 UTC](https://discourse.nodered.org/t/opening-a-webpage-in-a-new-window-from-a-button/97671 "2025-06-25T10:24:31Z")

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I am trying to open a webpage in a new window by using a button in node red. I tried using this example: Opening external links using dashboard buttons (flow) - Node-RED It's does open the links but it's not opening in …

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## [FlowFuse Assistant to build custom Dashboard elements](https://discourse.nodered.org/t/flowfuse-assistant-to-build-custom-dashboard-elements/97774)

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**Author:** [@joepavitt](https://discourse.nodered.org/u/joepavitt)\
**Replies:** 2\
**Last updated:** [25 June 2025 05:25 UTC](https://discourse.nodered.org/t/flowfuse-assistant-to-build-custom-dashboard-elements/97774 "2025-06-25T05:25:00Z")

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Hi All, thanks to some great work from @Steve-Mcl, we're about to ship a great new feature to FlowFuse whereby you can use AI to create Dashboard widgets: Resulting in: You can see a video recording of it here on…

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## [TLS Fingerprint Detection - Scraping Supermarket Special Offers](https://discourse.nodered.org/t/tls-fingerprint-detection-scraping-supermarket-special-offers/97766)

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**Author:** [@jbudd](https://discourse.nodered.org/u/jbudd)\
**Replies:** 5\
**Last updated:** [24 June 2025 19:47 UTC](https://discourse.nodered.org/t/tls-fingerprint-detection-scraping-supermarket-special-offers/97766 "2025-06-24T19:47:51Z")

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The URL half-price works in my browser, assuming the supernarket currently has any half price offers. When I try and access the page with an http-request node it gives error 403 Access Denied. I do have a User-Agent he…

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## [What am I missing regarding the \*sort\* node?](https://discourse.nodered.org/t/what-am-i-missing-regarding-the-sort-node/97780)

<div class="topic-metadata">

**Author:** [@codepoetza](https://discourse.nodered.org/u/codepoetza)\
**Replies:** 2\
**Last updated:** [24 June 2025 19:45 UTC](https://discourse.nodered.org/t/what-am-i-missing-regarding-the-sort-node/97780 "2025-06-24T19:45:43Z")

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When using the following simple flow design: JSON array inject \> split \> sort \> join \> debug, I get no output. When bypassing the sort, I do get output. What am I missing here? \[ { "id": "80d9e2f5beb720ea"…

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## [NR - low start after change log setting](https://discourse.nodered.org/t/nr-low-start-after-change-log-setting/97776)

<div class="topic-metadata">

**Author:** [@Giamma](https://discourse.nodered.org/u/Giamma)\
**Replies:** 1\
**Last updated:** [24 June 2025 19:03 UTC](https://discourse.nodered.org/t/nr-low-start-after-change-log-setting/97776 "2025-06-24T19:03:32Z")

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In my raspberry Pi4 I start node red by konsole .. to limit the data written in the log, in setting.js I changed the logging \> console \> level from info to warn ... Now NR is slower to start and I don't understand why …

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## [How to restrict a flow's output based on time of day](https://discourse.nodered.org/t/how-to-restrict-a-flows-output-based-on-time-of-day/97762)

<div class="topic-metadata">

**Author:** [@abrayshaw](https://discourse.nodered.org/u/abrayshaw)\
**Replies:** 5\
**Last updated:** [24 June 2025 15:40 UTC](https://discourse.nodered.org/t/how-to-restrict-a-flows-output-based-on-time-of-day/97762 "2025-06-24T15:40:04Z")

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I am very new to Node-Red. I am using Homeseer automation for lighting control. Using Homeseer's documentation (and hours of experimentation) I was able to create a NR flow to have an outdoor motion sensor cause my Amazo…

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