# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=110

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

**Page:** 111

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## [What software is this forum built with? Is it open source now?](https://discourse.nodered.org/t/what-software-is-this-forum-built-with-is-it-open-source-now/87907)

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**Author:** [@sangluocun](https://discourse.nodered.org/u/sangluocun)\
**Replies:** 2\
**Last updated:** [13 May 2024 09:00 UTC](https://discourse.nodered.org/t/what-software-is-this-forum-built-with-is-it-open-source-now/87907 "2024-05-13T09:00:37Z")

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What software is this forum built with? Is it open source now?

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## [Onvif-nodes Event node auto start](https://discourse.nodered.org/t/onvif-nodes-event-node-auto-start/87906)

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**Author:** [@randall-tech](https://discourse.nodered.org/u/randall-tech)\
**Replies:** 3\
**Last updated:** [13 May 2024 06:42 UTC](https://discourse.nodered.org/t/onvif-nodes-event-node-auto-start/87906 "2024-05-13T06:42:40Z")

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I am having a play around with a Reolink Doorbell and Onvif-nodes. I can successfully connect to the doorbell and receive Onvif events like person detection and the button press etc but I need a way to start the node lis…

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## [Change the TTS voice in a function based on the contents of the message?](https://discourse.nodered.org/t/change-the-tts-voice-in-a-function-based-on-the-contents-of-the-message/87898)

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**Author:** [@Bob](https://discourse.nodered.org/u/Bob)\
**Replies:** 1\
**Last updated:** [13 May 2024 01:23 UTC](https://discourse.nodered.org/t/change-the-tts-voice-in-a-function-based-on-the-contents-of-the-message/87898 "2024-05-13T01:23:25Z")

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I am new to Node-RED and experimenting with functions What I would like to do is to change the voice used by TTS depending on the content of the message. I can parse the message and determine whether the voice should b…

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## [Node-RED Won't Start - ERR\_INVALID\_CALLBACK](https://discourse.nodered.org/t/node-red-wont-start-err-invalid-callback/87899)

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**Author:** [@badgers](https://discourse.nodered.org/u/badgers)\
**Replies:** 2\
**Last updated:** [13 May 2024 00:39 UTC](https://discourse.nodered.org/t/node-red-wont-start-err-invalid-callback/87899 "2024-05-13T00:39:32Z")

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This started happening yesterday, I think, but Node-RED won't start up anymore. It will start in safe mode, but I'm not even sure how to trace this error back to a particular node. I haven't added any new nodes in week…

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## [Change node- move, change or other](https://discourse.nodered.org/t/change-node-move-change-or-other/87794)

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**Author:** [@chrisgla](https://discourse.nodered.org/u/chrisgla)\
**Replies:** 12\
**Last updated:** [12 May 2024 22:03 UTC](https://discourse.nodered.org/t/change-node-move-change-or-other/87794 "2024-05-12T22:03:42Z")

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Been a while since I used Node Red and I'm struggling with a simple change :frowning: A test inject node works sending values of on/ off in this Json:- I've tried every permutation of change node I can think of to mo…

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## [KNX Ultimate Device Node message format](https://discourse.nodered.org/t/knx-ultimate-device-node-message-format/87843)

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**Author:** [@Intelect](https://discourse.nodered.org/u/Intelect)\
**Replies:** 1\
**Last updated:** [12 May 2024 14:27 UTC](https://discourse.nodered.org/t/knx-ultimate-device-node-message-format/87843 "2024-05-12T14:27:39Z")

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I am trying to create a flow which uses a node from the module node-red-contrib-knx-ultimate The flow uses a trigger, a function node, a knx device node and finally another function node. The first function should Init…

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## [How to make 2 msgs go to a single database row ... I get 2 separate rows?](https://discourse.nodered.org/t/how-to-make-2-msgs-go-to-a-single-database-row-i-get-2-separate-rows/87841)

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**Author:** [@questuk](https://discourse.nodered.org/u/questuk)\
**Replies:** 8\
**Last updated:** [12 May 2024 13:29 UTC](https://discourse.nodered.org/t/how-to-make-2-msgs-go-to-a-single-database-row-i-get-2-separate-rows/87841 "2024-05-12T13:29:32Z")

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Hi, I have tried but cannot work this out, I am sure it is simple but i cannot find how. A simple test example and flow ... Insert a number, trim payload to fixed and the other is payload and is an electricity cost su…

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## [Math.asin in function-node](https://discourse.nodered.org/t/math-asin-in-function-node/87891)

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**Author:** [@ak68](https://discourse.nodered.org/u/ak68)\
**Replies:** 2\
**Last updated:** [12 May 2024 11:22 UTC](https://discourse.nodered.org/t/math-asin-in-function-node/87891 "2024-05-12T11:22:58Z")

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Hallo together, I want to build a function node to calculate from MPU6050-Gyro to angle with function: var korr = -(((Math.asin(msg.payload)/9.81)\*180/Math.Pi)-2.8); msg.payload = korr; return msg; ... but I do´n´…

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## ["Dialog" open/close consistent on all connected devices](https://discourse.nodered.org/t/dialog-open-close-consistent-on-all-connected-devices/87871)

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**Author:** [@gNeandr](https://discourse.nodered.org/u/gNeandr)\
**Replies:** 3\
**Last updated:** [11 May 2024 14:37 UTC](https://discourse.nodered.org/t/dialog-open-close-consistent-on-all-connected-devices/87871 "2024-05-11T14:37:23Z")

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I'm coming back to using "Dialog" as @hotNipi recommended. (I missed using the thread Modal element above others -- Platform problem - #8 by hotNipi - it was closed 5h ago) Dialog solves the problem of windows not stac…

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## [Http endpoint accept only the first url parameter](https://discourse.nodered.org/t/http-endpoint-accept-only-the-first-url-parameter/87869)

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**Author:** [@colletda](https://discourse.nodered.org/u/colletda)\
**Replies:** 2\
**Last updated:** [11 May 2024 09:34 UTC](https://discourse.nodered.org/t/http-endpoint-accept-only-the-first-url-parameter/87869 "2024-05-11T09:34:22Z")

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Hi community I'm new to node-red and try to config a simple http endpoint (REST API). I startet adapt with the samples from the cookbook: this one with one single parameter works fine (https://cookbook.nodered.org/http/…

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## [Help with motion trigger and reset](https://discourse.nodered.org/t/help-with-motion-trigger-and-reset/87847)

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**Author:** [@esrfsdfa](https://discourse.nodered.org/u/esrfsdfa)\
**Replies:** 5\
**Last updated:** [11 May 2024 00:30 UTC](https://discourse.nodered.org/t/help-with-motion-trigger-and-reset/87847 "2024-05-11T00:30:27Z")

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I have a light which turns on at dusk and turns off at a specific time of night, this flow works as expected: I am trying to add an additional flow for the same light to act as a night light: If the light is off, a…

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## [Send string data to influxdb v2 running in Portainer](https://discourse.nodered.org/t/send-string-data-to-influxdb-v2-running-in-portainer/87812)

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**Author:** [@telescopio](https://discourse.nodered.org/u/telescopio)\
**Replies:** 7\
**Last updated:** [10 May 2024 18:15 UTC](https://discourse.nodered.org/t/send-string-data-to-influxdb-v2-running-in-portainer/87812 "2024-05-10T18:15:31Z")

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Influxdb v2 running in Portainer I create a Bucket name Red, under Organization name is OBS, already create a Token and is running in localhost;8086 I have this data from my sensor as a string from a HTTP Get node d…

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## [Cant find uibuilder project folder](https://discourse.nodered.org/t/cant-find-uibuilder-project-folder/87785)

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**Author:** [@Intelect](https://discourse.nodered.org/u/Intelect)\
**Replies:** 9\
**Last updated:** [9 May 2024 19:15 UTC](https://discourse.nodered.org/t/cant-find-uibuilder-project-folder/87785 "2024-05-09T19:15:17Z")

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Hi, I need some help with uibuilder if someone can point me in the right direction. It is for a specific project and I am using a server which is running Armbian 21.08.1 Hirsute. NodeRed which was preconfigured and setu…

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## [Show "Active Node" and errors in template based web front-end](https://discourse.nodered.org/t/show-active-node-and-errors-in-template-based-web-front-end/87830)

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**Author:** [@MCPCN](https://discourse.nodered.org/u/MCPCN)\
**Replies:** 5\
**Last updated:** [9 May 2024 14:34 UTC](https://discourse.nodered.org/t/show-active-node-and-errors-in-template-based-web-front-end/87830 "2024-05-09T14:34:38Z")

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I'm using node-red as a back-end and simple front-end for a report, which pulls data from various sources and populates a Word document using docx-template, ready for editing/publishing to our customers. The front-end i…

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## [My Node-RED flow feels heavy on Raspberry Pi 4](https://discourse.nodered.org/t/my-node-red-flow-feels-heavy-on-raspberry-pi-4/87090)

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**Author:** [@KamalKenzu12](https://discourse.nodered.org/u/KamalKenzu12)\
**Replies:** 13\
**Last updated:** [9 May 2024 09:41 UTC](https://discourse.nodered.org/t/my-node-red-flow-feels-heavy-on-raspberry-pi-4/87090 "2024-05-09T09:41:39Z")

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Hello everyone! I am a new user in using Node-RED :smiley: I want to ask something about Node-RED on my Raspberry Pi 4 which feels heavy and as a result makes my dashboard feel delayed (for example when using a switch, …

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## [Listen to flow hook and trigger invoke a api](https://discourse.nodered.org/t/listen-to-flow-hook-and-trigger-invoke-a-api/87831)

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**Author:** [@HenryTrang](https://discourse.nodered.org/u/HenryTrang)\
**Replies:** 0\
**Last updated:** [9 May 2024 09:07 UTC](https://discourse.nodered.org/t/listen-to-flow-hook-and-trigger-invoke-a-api/87831 "2024-05-09T09:07:33Z")

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hi veteran when flow ready i need to invoke an interface. may i listen to the flow hook and get triggered? like in vue project oncreated, onmounted, beforedestroy.

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## [Inject repeat function](https://discourse.nodered.org/t/inject-repeat-function/87826)

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**Author:** [@2shlee](https://discourse.nodered.org/u/2shlee)\
**Replies:** 0\
**Last updated:** [9 May 2024 07:49 UTC](https://discourse.nodered.org/t/inject-repeat-function/87826 "2024-05-09T07:49:54Z")

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You are using the \[repeat\] function of \[inject\] to receive data every 15 minutes from the \[modbus-flex-sequencer node\]. You should receive data from a total of 10 devices through modbus. When you first deploy and run No…

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## [Directly modify context as reference](https://discourse.nodered.org/t/directly-modify-context-as-reference/87802)

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**Author:** [@Lupin\_III](https://discourse.nodered.org/u/Lupin_III)\
**Replies:** 2\
**Last updated:** [8 May 2024 13:37 UTC](https://discourse.nodered.org/t/directly-modify-context-as-reference/87802 "2024-05-08T13:37:19Z")

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Hi, working with context (context,flow or global) we directly access and modify them unless we don't use RED.util.cloneMessage. So if for instance we have flow.set("mytest",{ "A":\[1,2,3\], "B":{"value1":"B1","value2":"B2…

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## [LWT incorrectly shows system offline](https://discourse.nodered.org/t/lwt-incorrectly-shows-system-offline/87718)

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**Author:** [@edstobi](https://discourse.nodered.org/u/edstobi)\
**Replies:** 8\
**Last updated:** [8 May 2024 13:28 UTC](https://discourse.nodered.org/t/lwt-incorrectly-shows-system-offline/87718 "2024-05-08T13:28:33Z")

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Hello I have found one point which I cannot explain The Node send mqtt LWT (last will) simply comes after a time in mqtt that it is offline although this is not the case. If I lock in and trigger a debung to get a ta…

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## [Function: sendIt - avoid incorrect values](https://discourse.nodered.org/t/function-sendit-avoid-incorrect-values/87748)

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**Author:** [@Becker](https://discourse.nodered.org/u/Becker)\
**Replies:** 7\
**Last updated:** [8 May 2024 13:25 UTC](https://discourse.nodered.org/t/function-sendit-avoid-incorrect-values/87748 "2024-05-08T13:25:00Z")

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Hi, i´m using the following function to send some values to my influxdb: function sendIt(topic, address, roundTo) { let m = { topic: topic, payload: parseFloat(msg.payload\[address\].toFixed(roundTo)) …

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## [Change node is not showing any rules](https://discourse.nodered.org/t/change-node-is-not-showing-any-rules/87773)

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**Author:** [@Fahrerkrieger](https://discourse.nodered.org/u/Fahrerkrieger)\
**Replies:** 10\
**Last updated:** [8 May 2024 10:07 UTC](https://discourse.nodered.org/t/change-node-is-not-showing-any-rules/87773 "2024-05-08T10:07:24Z")

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In the above image change node is not showing any of its rules. It is the same with other nodes such as the string node. What should i do? I have even reinstalled node red and it still couldn't be rectified

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## [Multiple lines of serial in as single file](https://discourse.nodered.org/t/multiple-lines-of-serial-in-as-single-file/87775)

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**Author:** [@Boerwors](https://discourse.nodered.org/u/Boerwors)\
**Replies:** 6\
**Last updated:** [8 May 2024 08:46 UTC](https://discourse.nodered.org/t/multiple-lines-of-serial-in-as-single-file/87775 "2024-05-08T08:46:09Z")

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hey all i am once again in need of some help. i've got a bunch of arduinos sending data to a single arduino which then prints the serial data in individual lines. in short, i want to write both lines (and more) includin…

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## [@leipert/node-red-contrib-stock-ticker errors](https://discourse.nodered.org/t/leipert-node-red-contrib-stock-ticker-errors/87799)

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**Author:** [@k5map](https://discourse.nodered.org/u/k5map)\
**Replies:** 1\
**Last updated:** [8 May 2024 05:02 UTC](https://discourse.nodered.org/t/leipert-node-red-contrib-stock-ticker-errors/87799 "2024-05-08T05:02:12Z")

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I've been using the @leipert/node-red-contrib-stock-ticker (v2.0.1) node to collect stock prices for multiple years but recently, I have been getting errors each time I call the node. Curious if anyone else is receiving…

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## [Node red firewall rules](https://discourse.nodered.org/t/node-red-firewall-rules/87777)

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**Author:** [@MarianoB](https://discourse.nodered.org/u/MarianoB)\
**Replies:** 5\
**Last updated:** [8 May 2024 01:40 UTC](https://discourse.nodered.org/t/node-red-firewall-rules/87777 "2024-05-08T01:40:01Z")

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Im using node red on a network that have a firewall. I want to know the URL i need to put as an exception on the firewall so i can download new nodes when needed

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## [How to use \`api\` and \`routes\` folder in uibuilder vue3 template?](https://discourse.nodered.org/t/how-to-use-api-and-routes-folder-in-uibuilder-vue3-template/87790)

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**Author:** [@yongbao](https://discourse.nodered.org/u/yongbao)\
**Replies:** 4\
**Last updated:** [7 May 2024 21:19 UTC](https://discourse.nodered.org/t/how-to-use-api-and-routes-folder-in-uibuilder-vue3-template/87790 "2024-05-07T21:19:47Z")

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I am a beginner in node-red and I started node-red a few days ago. I created a new node by using uibuilder with vue3 template. But I am not sure how I can use api and routes folders of uibuilder node. I appreciate you…

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## [Response handling from External NPM Module](https://discourse.nodered.org/t/response-handling-from-external-npm-module/87795)

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**Author:** [@VinistoisR](https://discourse.nodered.org/u/VinistoisR)\
**Replies:** 3\
**Last updated:** [7 May 2024 20:40 UTC](https://discourse.nodered.org/t/response-handling-from-external-npm-module/87795 "2024-05-07T20:40:04Z")

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In a Function Node, I added this NPM module in the setup tab: It's working with the following function code, adapted from the module's readme: // Send "UP" Heartbeat to Prometheus endpoint using Prometheus-Remote-Wri…

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## [Calculate input from two sensor nodes, then trigger output](https://discourse.nodered.org/t/calculate-input-from-two-sensor-nodes-then-trigger-output/87762)

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**Author:** [@kosch](https://discourse.nodered.org/u/kosch)\
**Replies:** 8\
**Last updated:** [7 May 2024 20:36 UTC](https://discourse.nodered.org/t/calculate-input-from-two-sensor-nodes-then-trigger-output/87762 "2024-05-07T20:36:23Z")

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Very new to Node-RED, have some basics working (dashboard with graphs from sensors, switch for relays), but did a decent amount of searching and either cannot find or just cannot grasp how to do this. I have 2 ESP8266s …

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## [Msg.reset on deCONZ states](https://discourse.nodered.org/t/msg-reset-on-deconz-states/87793)

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**Author:** [@cairon](https://discourse.nodered.org/u/cairon)\
**Replies:** 0\
**Last updated:** [7 May 2024 18:56 UTC](https://discourse.nodered.org/t/msg-reset-on-deconz-states/87793 "2024-05-07T18:56:30Z")

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Hi there, do you know an opportunity to set a deCONZ state back to false? Motion from Sensor 1 sets Sensor 1 to true (normal behaviour) Motion from Sensor 2 sets Sensor 1 to false I fact: Is it possible to manipulate…

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## [How to publish MQTT Sparkplug B message](https://discourse.nodered.org/t/how-to-publish-mqtt-sparkplug-b-message/87444)

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**Author:** [@Garrian](https://discourse.nodered.org/u/Garrian)\
**Replies:** 1\
**Last updated:** [7 May 2024 18:37 UTC](https://discourse.nodered.org/t/how-to-publish-mqtt-sparkplug-b-message/87444 "2024-05-07T18:37:00Z")

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Hi there, I'm trying to publish a Sparkplug B message from node-red, but I don't get how I'm supposed to do that. This is my flow: msg.topic = "spBv1.0/namespace/group/device/edgeNode/sensor1"; msg.payload = { "b…

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## [Não consigo obter o status da conexão do PLC S7 1200 com o node red](https://discourse.nodered.org/t/nao-consigo-obter-o-status-da-conexao-do-plc-s7-1200-com-o-node-red/87788)

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**Author:** [@uzi206](https://discourse.nodered.org/u/uzi206)\
**Replies:** 0\
**Last updated:** [7 May 2024 15:38 UTC](https://discourse.nodered.org/t/nao-consigo-obter-o-status-da-conexao-do-plc-s7-1200-com-o-node-red/87788 "2024-05-07T15:38:59Z")

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Gostaria de poder exibir o status da conexão com o meu PLC S7 1200 num dashboard, estou trocando dados entre o PLC e o node red pelo palete node-red-contrib-s7 3.1.0, porém ele não lança erro de comunicação num nó Catch,…

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