# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=252

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

**Page:** 253

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## [Problems deleting a group](https://discourse.nodered.org/t/problems-deleting-a-group/74719)

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**Author:** [@jbudd](https://discourse.nodered.org/u/jbudd)\
**Replies:** 4\
**Last updated:** [5 February 2023 10:10 UTC](https://discourse.nodered.org/t/problems-deleting-a-group/74719 "2023-02-05T10:10:44Z")

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Do other folks see this behaviour? It seems only to happen after you delete a junction. NR 3.0.2, node.js 16.19.0 Make a group containing inject, junction and debug nodes. Deploy. Select and delete the junction. D…

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## [Light Automations to Change Brightness/Temp. Every Hour - Is This The Best Way (New Big Timer Every Hour)?)](https://discourse.nodered.org/t/light-automations-to-change-brightness-temp-every-hour-is-this-the-best-way-new-big-timer-every-hour/74529)

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**Author:** [@ez2remember](https://discourse.nodered.org/u/ez2remember)\
**Replies:** 15\
**Last updated:** [5 February 2023 09:07 UTC](https://discourse.nodered.org/t/light-automations-to-change-brightness-temp-every-hour-is-this-the-best-way-new-big-timer-every-hour/74529 "2023-02-05T09:07:15Z")

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Hi, I have two Elgato Keylights at my desk and I have set up automations at every hour to change the brightness and color temperature throughout the workday. I use a new Big Timer node for every hour. I am just wonderi…

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## [Tado api 'call for heat ' status?](https://discourse.nodered.org/t/tado-api-call-for-heat-status/74648)

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**Author:** [@peter1](https://discourse.nodered.org/u/peter1)\
**Replies:** 2\
**Last updated:** [5 February 2023 08:54 UTC](https://discourse.nodered.org/t/tado-api-call-for-heat-status/74648 "2023-02-05T08:54:00Z")

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I have got the api working for most api calls sucessfully. However I cannot find where the api reports the status of the ' call for heat' ie contact closed for Heating! The most obvious field of Heating Power seems to …

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## [Change Serial COM Port from webpage](https://discourse.nodered.org/t/change-serial-com-port-from-webpage/74461)

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**Author:** [@Johrdan](https://discourse.nodered.org/u/Johrdan)\
**Replies:** 6\
**Last updated:** [4 February 2023 20:12 UTC](https://discourse.nodered.org/t/change-serial-com-port-from-webpage/74461 "2023-02-04T20:12:26Z")

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Hi, I am using Node-RED to connect my laptop to a device that has serial communication and is connected to COM5. I am receiving the data in Node-RED through a serial in node and showing the data in a webpage by using uib…

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## [How to send text command from N-R to Google Home, assistant?](https://discourse.nodered.org/t/how-to-send-text-command-from-n-r-to-google-home-assistant/74633)

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**Author:** [@Olaa](https://discourse.nodered.org/u/Olaa)\
**Replies:** 7\
**Last updated:** [4 February 2023 17:44 UTC](https://discourse.nodered.org/t/how-to-send-text-command-from-n-r-to-google-home-assistant/74633 "2023-02-04T17:44:16Z")

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You can relatively easily send emails and SMS in Node-Red. Trying to find a GateWay solution based on sending text to GoogleHome, Assistant. My problem is that I have several good devices, lights, sockets, relays that ar…

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## [Performance get/set variables. different methods](https://discourse.nodered.org/t/performance-get-set-variables-different-methods/74357)

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**Author:** [@edterbak](https://discourse.nodered.org/u/edterbak)\
**Replies:** 25\
**Last updated:** [4 February 2023 14:32 UTC](https://discourse.nodered.org/t/performance-get-set-variables-different-methods/74357 "2023-02-04T14:32:45Z")

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Hello, I have a performance question. There are multiple methods of getting and setting variables. I would like to know what is adviced, or what gives the best performance between them. Question 1: what method is advi…

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## [How to SELECT from MySQL and then INSERT result in MSSQL](https://discourse.nodered.org/t/how-to-select-from-mysql-and-then-insert-result-in-mssql/74643)

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**Author:** [@sahsha](https://discourse.nodered.org/u/sahsha)\
**Replies:** 6\
**Last updated:** [4 February 2023 11:46 UTC](https://discourse.nodered.org/t/how-to-select-from-mysql-and-then-insert-result-in-mssql/74643 "2023-02-04T11:46:45Z")

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Please suggest a method where I get data using MySQL SELECT column 1, column 2, ..... column n FROM MySQL\_database then insert the results using MSSQL node INSERT INTO MSSQL\_database (column 1, column 2, ..... col…

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## [Installation goes wrong about node-red-contrib-teachable-machine](https://discourse.nodered.org/t/installation-goes-wrong-about-node-red-contrib-teachable-machine/74563)

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**Author:** [@lpj669](https://discourse.nodered.org/u/lpj669)\
**Replies:** 15\
**Last updated:** [4 February 2023 09:00 UTC](https://discourse.nodered.org/t/installation-goes-wrong-about-node-red-contrib-teachable-machine/74563 "2023-02-04T09:00:17Z")

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ello everyone. After installing Node-red-contrib-teachable-machine in node-red, the ERR\_DLOPEN\_FAILED message appears, as shown in the figure. The program cannot be deployed. How to solve this problem? I hopesomeone can…

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## [IPv6 connect/disconnect issue with mqtt in or out nodes](https://discourse.nodered.org/t/ipv6-connect-disconnect-issue-with-mqtt-in-or-out-nodes/74444)

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**Author:** [@lepgithub](https://discourse.nodered.org/u/lepgithub)\
**Replies:** 4\
**Last updated:** [4 February 2023 02:15 UTC](https://discourse.nodered.org/t/ipv6-connect-disconnect-issue-with-mqtt-in-or-out-nodes/74444 "2023-02-04T02:15:43Z")

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I'm slowly moving my projects to utilize IPv6, but I found an issue while using a single MQTT IN or OUT node where during a modified node deployment 50% of the time it will disconnect from an IPv6 only broker. I can rep…

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## [RGB 8x8x8: Node-rec-contrib-image-tools ... How to?](https://discourse.nodered.org/t/rgb-8x8x8-node-rec-contrib-image-tools-how-to/74632)

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**Author:** [@Triark](https://discourse.nodered.org/u/Triark)\
**Replies:** 4\
**Last updated:** [4 February 2023 01:09 UTC](https://discourse.nodered.org/t/rgb-8x8x8-node-rec-contrib-image-tools-how-to/74632 "2023-02-04T01:09:27Z")

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I use the node-rec-contrib-image-tools, with JIMP... which is great :wink: but I have a small "jam"... Can you help me please? I generate a QR Code with the node, and later I resize it (because I have to present it wit…

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## [SSDP – Simple Service Discovery Protocol](https://discourse.nodered.org/t/ssdp-simple-service-discovery-protocol/74456)

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**Author:** [@allacmc](https://discourse.nodered.org/u/allacmc)\
**Replies:** 15\
**Last updated:** [3 February 2023 22:55 UTC](https://discourse.nodered.org/t/ssdp-simple-service-discovery-protocol/74456 "2023-02-03T22:55:18Z")

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I have a certain need to make sure that the equipment that sends information via MQTT is present or not in my network. So I would like to know if there is any node that uses the SSDP protocol? Or if there is any initia…

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## [Hide node-red code or use flow-forge](https://discourse.nodered.org/t/hide-node-red-code-or-use-flow-forge/74681)

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**Author:** [@allacmc](https://discourse.nodered.org/u/allacmc)\
**Replies:** 0\
**Last updated:** [3 February 2023 21:56 UTC](https://discourse.nodered.org/t/hide-node-red-code-or-use-flow-forge/74681 "2023-02-03T21:56:04Z")

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I'm developing an application where I'll need to ask the client for a physical server/pc(I need services: mosquitto, mariadb, phpmyadmin, apache e etc), ande other considering that where I'm going to install it doesn't …

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## [Installation of node-red-mcu-plugin keeps failing](https://discourse.nodered.org/t/installation-of-node-red-mcu-plugin-keeps-failing/74566)

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**Author:** [@BartButenaers](https://discourse.nodered.org/u/BartButenaers)\
**Replies:** 11\
**Last updated:** [3 February 2023 20:43 UTC](https://discourse.nodered.org/t/installation-of-node-red-mcu-plugin-keeps-failing/74566 "2023-02-03T20:43:28Z")

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Hi folks, Some time ago I installed the node-red-mcu-plugin directly from @ralphwetzel his Github account. Meanwhile he has published his package on npm, so I wanted to install that. Unfortunately it keeps failing: p…

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## [Display results from SQL query in a HTML table?](https://discourse.nodered.org/t/display-results-from-sql-query-in-a-html-table/74672)

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**Author:** [@network\_potato](https://discourse.nodered.org/u/network_potato)\
**Replies:** 4\
**Last updated:** [3 February 2023 19:21 UTC](https://discourse.nodered.org/t/display-results-from-sql-query-in-a-html-table/74672 "2023-02-03T19:21:18Z")

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Using node-red-node-mysql, how do I go on about displaying query results in a HTML table using a template node and HTTP Response node (not Node-RED dashboard/UI)?

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## [Jsdoc and Node-Red - does it work?](https://discourse.nodered.org/t/jsdoc-and-node-red-does-it-work/74627)

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**Author:** [@alex88](https://discourse.nodered.org/u/alex88)\
**Replies:** 6\
**Last updated:** [3 February 2023 18:09 UTC](https://discourse.nodered.org/t/jsdoc-and-node-red-does-it-work/74627 "2023-02-03T18:09:59Z")

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I found out about jsdoc and wanted to use it to document my node-red flows, however after setting it up I learnt a bit more about how node-red stores the code inside flows. Out of the box the format is not compatible wi…

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## [On/off Ikea Tradfri with Loxone](https://discourse.nodered.org/t/on-off-ikea-tradfri-with-loxone/74649)

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**Author:** [@jkosatko](https://discourse.nodered.org/u/jkosatko)\
**Replies:** 6\
**Last updated:** [3 February 2023 17:26 UTC](https://discourse.nodered.org/t/on-off-ikea-tradfri-with-loxone/74649 "2023-02-03T17:26:43Z")

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Hello all, I have started with NR few hours ago... I am trying to achieve simple thing. I would like to control Ikea sockets connected to Ikea Tradfri gateway via Loxone. I have setup NR and added two paletts node-red-…

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## [QR Code reader in UI / Dashboard](https://discourse.nodered.org/t/qr-code-reader-in-ui-dashboard/74668)

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**Author:** [@Peter](https://discourse.nodered.org/u/Peter)\
**Replies:** 0\
**Last updated:** [3 February 2023 17:24 UTC](https://discourse.nodered.org/t/qr-code-reader-in-ui-dashboard/74668 "2023-02-03T17:24:49Z")

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Good evening team!! hope all is well. I need some advice on QR reader project. I use a CM4 / Bullseye + rapsi cam with Libcamera ( instead of raspistill) on the NR side, I'm using ( node-red-contrib-image-tools ), and…

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## [How to setup a flow to continuously read serial data](https://discourse.nodered.org/t/how-to-setup-a-flow-to-continuously-read-serial-data/74663)

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**Author:** [@leb986](https://discourse.nodered.org/u/leb986)\
**Replies:** 6\
**Last updated:** [3 February 2023 16:42 UTC](https://discourse.nodered.org/t/how-to-setup-a-flow-to-continuously-read-serial-data/74663 "2023-02-03T16:42:34Z")

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Hi all, I'm a beginner at using Node-Red and I'm trying to set up a flow for reading data from an elm327 device. I'm looking for some guidance on how to set up multiple conditions where, when met, a specific set of requ…

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## [Display Node status for every kind of nodes](https://discourse.nodered.org/t/display-node-status-for-every-kind-of-nodes/74641)

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**Author:** [@kevtuning](https://discourse.nodered.org/u/kevtuning)\
**Replies:** 4\
**Last updated:** [3 February 2023 14:21 UTC](https://discourse.nodered.org/t/display-node-status-for-every-kind-of-nodes/74641 "2023-02-03T14:21:16Z")

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Hi all, I am looking for having the easiest way to debug my flows and I think that it would be really good to have a status node displayed in the interface for all kind of nodes. I am thinking in particular to switch n…

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## [Exec node send an output payload on more than one message](https://discourse.nodered.org/t/exec-node-send-an-output-payload-on-more-than-one-message/74590)

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**Author:** [@Lupin\_III](https://discourse.nodered.org/u/Lupin_III)\
**Replies:** 33\
**Last updated:** [3 February 2023 14:01 UTC](https://discourse.nodered.org/t/exec-node-send-an-output-payload-on-more-than-one-message/74590 "2023-02-03T14:01:25Z")

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Hi,following this suggestion I'm using the template node to create aand save a python script, than the exec node to run it https://flows.nodered.org/flow/0a6e073bcd6bda364fafd32699837cc7 this is my exec node My pyt…

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## [Is it possible to create a dashboard using core template node that contains charts and bar graphs](https://discourse.nodered.org/t/is-it-possible-to-create-a-dashboard-using-core-template-node-that-contains-charts-and-bar-graphs/74631)

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**Author:** [@Manish131rai](https://discourse.nodered.org/u/Manish131rai)\
**Replies:** 2\
**Last updated:** [3 February 2023 10:37 UTC](https://discourse.nodered.org/t/is-it-possible-to-create-a-dashboard-using-core-template-node-that-contains-charts-and-bar-graphs/74631 "2023-02-03T10:37:58Z")

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I want to create a dashboard but using (html,css and javascript) and that to only using core template node that contains charts and bar graphs, is it possible ??

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## [How can I obfuscate the codes written in function node?](https://discourse.nodered.org/t/how-can-i-obfuscate-the-codes-written-in-function-node/74624)

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**Author:** [@Josh](https://discourse.nodered.org/u/Josh)\
**Replies:** 3\
**Last updated:** [3 February 2023 10:26 UTC](https://discourse.nodered.org/t/how-can-i-obfuscate-the-codes-written-in-function-node/74624 "2023-02-03T10:26:10Z")

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Hi Forum, Is there a way to obfuscate the codes written in function nodes suppose if I want to deploy my flows to the client side?

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## [Test-Driven Development](https://discourse.nodered.org/t/test-driven-development/72965)

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**Author:** [@eamonn.sullivan](https://discourse.nodered.org/u/eamonn.sullivan)\
**Replies:** 7\
**Last updated:** [3 February 2023 10:23 UTC](https://discourse.nodered.org/t/test-driven-development/72965 "2023-02-03T10:23:12Z")

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Hi all, I'm a very happy Node Red user. I use it to do all of my automations with Home Assistant, rather than try to "program" in YAML. I'm a software developer as a day job, so the ability to drop down into Javascript …

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## [Is it possible to export flow with command and store in database?](https://discourse.nodered.org/t/is-it-possible-to-export-flow-with-command-and-store-in-database/74634)

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**Author:** [@robindra](https://discourse.nodered.org/u/robindra)\
**Replies:** 2\
**Last updated:** [3 February 2023 10:12 UTC](https://discourse.nodered.org/t/is-it-possible-to-export-flow-with-command-and-store-in-database/74634 "2023-02-03T10:12:42Z")

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Hi All, I have a query regarding the exporting the flow. There is already option on Node red to export from menu CTR + e through which I am able to export the flow. But, I just want to know is there any way/ package thr…

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## [No data from SML Smartmeter to nodered](https://discourse.nodered.org/t/no-data-from-sml-smartmeter-to-nodered/74637)

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**Author:** [@quirao](https://discourse.nodered.org/u/quirao)\
**Replies:** 0\
**Last updated:** [3 February 2023 08:21 UTC](https://discourse.nodered.org/t/no-data-from-sml-smartmeter-to-nodered/74637 "2023-02-03T08:21:56Z")

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Hello everbody, I would be really happy, if someone could help me with my 'smartmeter problem'. Mosquitto, nodered, timescaledb and grafana are running on a raspberry pi 4 as docker containers. With mqtt messages every…

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## [How to send variables to display in hmi siemens with modbus?](https://discourse.nodered.org/t/how-to-send-variables-to-display-in-hmi-siemens-with-modbus/73865)

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**Author:** [@ahmedt04](https://discourse.nodered.org/u/ahmedt04)\
**Replies:** 1\
**Last updated:** [27 January 2023 08:04 UTC](https://discourse.nodered.org/t/how-to-send-variables-to-display-in-hmi-siemens-with-modbus/73865 "2023-01-27T08:04:55Z")

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Hello, i'm using node-red to get some variables from a plc via OpcUa i'm using an iot2050, I managed to read the variables I need now I should send these variables to an hmi panel to be able to read them on the panel, …

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## [Can we handle single flow for multiple devices or do we need to create flow for each devices?](https://discourse.nodered.org/t/can-we-handle-single-flow-for-multiple-devices-or-do-we-need-to-create-flow-for-each-devices/74602)

<div class="topic-metadata">

**Author:** [@robindra](https://discourse.nodered.org/u/robindra)\
**Replies:** 3\
**Last updated:** [3 February 2023 06:12 UTC](https://discourse.nodered.org/t/can-we-handle-single-flow-for-multiple-devices-or-do-we-need-to-create-flow-for-each-devices/74602 "2023-02-03T06:12:12Z")

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Hi All, I am very new to Nodered world and was trying to create some POC to handle request and send response through mqtt in/out node and I am able to handle the same. The flow which I have created is able to handle for…

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## [ConnectionError LOCAL - SQLEXPRESS with cotrib-mssql-plus](https://discourse.nodered.org/t/connectionerror-local-sqlexpress-with-cotrib-mssql-plus/74630)

<div class="topic-metadata">

**Author:** [@Alejogonzalez](https://discourse.nodered.org/u/Alejogonzalez)\
**Replies:** 1\
**Last updated:** [3 February 2023 03:11 UTC](https://discourse.nodered.org/t/connectionerror-local-sqlexpress-with-cotrib-mssql-plus/74630 "2023-02-03T03:11:59Z")

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I'm using node-red-contrib-mssql-plus, to connect with a local SQL Express, I already read all the past throubleshooting and i can't find my own. I tested my connection with de DB with python (pyodbc) just for making su…

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## [Modbus Not reading float value correct](https://discourse.nodered.org/t/modbus-not-reading-float-value-correct/74491)

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**Author:** [@1onkar](https://discourse.nodered.org/u/1onkar)\
**Replies:** 7\
**Last updated:** [3 February 2023 01:58 UTC](https://discourse.nodered.org/t/modbus-not-reading-float-value-correct/74491 "2023-02-03T01:58:08Z")

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Hi, I am reading modbus RTU , 32 bit float register and noticed some of the values are not read correct. Alternatively if I use Kepware OPC server it reads absolutely correct and very fast response. I am using buffer …

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## [How to convert an object object object to object\[\].object](https://discourse.nodered.org/t/how-to-convert-an-object-object-object-to-object-object/74613)

<div class="topic-metadata">

**Author:** [@zenofmud](https://discourse.nodered.org/u/zenofmud)\
**Replies:** 9\
**Last updated:** [2 February 2023 23:05 UTC](https://discourse.nodered.org/t/how-to-convert-an-object-object-object-to-object-object/74613 "2023-02-02T23:05:28Z")

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So I've been beating my head against the wall and need some help. I have this object: { "cameras": { "cam1": { "label": "Front Door", "rotation": "0deg" }, "cam2": { …

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