# Latest

**URL:** https://discourse.nodered.org/latest.md?page=580

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

**Page:** 581

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## [Problems installing nodered dashboard or any other plugins](https://discourse.nodered.org/t/problems-installing-nodered-dashboard-or-any-other-plugins/61620)

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**Author:** [@sn19](https://discourse.nodered.org/u/sn19)\
**Replies:** 24\
**Last updated:** [27 April 2022 17:05 UTC](https://discourse.nodered.org/t/problems-installing-nodered-dashboard-or-any-other-plugins/61620 "2022-04-27T17:05:16Z")

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Hello. I am new to nodered and I tried to install the nodered dashboard. The following message appears: npm ERR! request to registry.npmjs.org/node-red-dashboard failedIt wont let me update any plugins either. Please he…

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## [How can I include a check for NaN inside an object?](https://discourse.nodered.org/t/how-can-i-include-a-check-for-nan-inside-an-object/61874)

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**Author:** [@MaDo](https://discourse.nodered.org/u/MaDo)\
**Replies:** 4\
**Last updated:** [27 April 2022 15:57 UTC](https://discourse.nodered.org/t/how-can-i-include-a-check-for-nan-inside-an-object/61874 "2022-04-27T15:57:23Z")

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Hello, I am new here and I am not a programmer but have a question on a Node-RED flow that sometimes causes trouble, if one of my sensors is not available. At first some background information: I am using a TFA KlimaLo…

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## [74HC595 - shift register - how to use on node-red](https://discourse.nodered.org/t/74hc595-shift-register-how-to-use-on-node-red/61568)

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**Author:** [@ciropaes](https://discourse.nodered.org/u/ciropaes)\
**Replies:** 9\
**Last updated:** [27 April 2022 15:34 UTC](https://discourse.nodered.org/t/74hc595-shift-register-how-to-use-on-node-red/61568 "2022-04-27T15:34:09Z")

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could you guide me how should I work using 74HC595 on node-red installed on a raspberry pi 3?

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## [Set a USB device to always be /dev/ttyUSB1](https://discourse.nodered.org/t/set-a-usb-device-to-always-be-dev-ttyusb1/61860)

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**Author:** [@swanside](https://discourse.nodered.org/u/swanside)\
**Replies:** 7\
**Last updated:** [27 April 2022 15:06 UTC](https://discourse.nodered.org/t/set-a-usb-device-to-always-be-dev-ttyusb1/61860 "2022-04-27T15:06:01Z")

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Hello. I have 2 USB devices on my Raspberry PI, both Modbus as 1 reads my Solar equipment and the other reads an energy meter. At midnight my Pi reboots, and every so often I have to go into Node Red to change the /dev/…

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## [Disabling HTTP/S error pages](https://discourse.nodered.org/t/disabling-http-s-error-pages/61873)

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**Author:** [@JayDickson](https://discourse.nodered.org/u/JayDickson)\
**Replies:** 3\
**Last updated:** [27 April 2022 14:11 UTC](https://discourse.nodered.org/t/disabling-http-s-error-pages/61873 "2022-04-27T14:11:11Z")

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I'm working on a flow that is kicked off when a user sends a GET to the right URL. For the most part, things are working, though I'd really like to just never respond to requests to a URL I don't recognize. Instead, in s…

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## [Accessing logfiles for specific flows/nodes running docker](https://discourse.nodered.org/t/accessing-logfiles-for-specific-flows-nodes-running-docker/61840)

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**Author:** [@binderth](https://discourse.nodered.org/u/binderth)\
**Replies:** 4\
**Last updated:** [27 April 2022 14:22 UTC](https://discourse.nodered.org/t/accessing-logfiles-for-specific-flows-nodes-running-docker/61840 "2022-04-27T14:22:28Z")

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I'm running Node-Red in Docker v2.2.2 and I'm running into a problem with one flow/node and I'd like to access the logfiles to see, what's going on. I searched in /data, which is mapped to my Synology, but there are no l…

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## [Suggestion of enhancements for the template and function nodes](https://discourse.nodered.org/t/suggestion-of-enhancements-for-the-template-and-function-nodes/61704)

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**Author:** [@RafaelMuynarsk](https://discourse.nodered.org/u/RafaelMuynarsk)\
**Replies:** 8\
**Last updated:** [27 April 2022 14:18 UTC](https://discourse.nodered.org/t/suggestion-of-enhancements-for-the-template-and-function-nodes/61704 "2022-04-27T14:18:39Z")

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There is some time that I've been using Node-RED daily and there's a functionality that I always change on the template and function nodes after updating Node-RED to a new version. I haven't found any similar issues here…

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## [Accessing node name e.g. in a function](https://discourse.nodered.org/t/accessing-node-name-e-g-in-a-function/61863)

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**Author:** [@binderth](https://discourse.nodered.org/u/binderth)\
**Replies:** 3\
**Last updated:** [27 April 2022 13:11 UTC](https://discourse.nodered.org/t/accessing-node-name-e-g-in-a-function/61863 "2022-04-27T13:11:24Z")

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To get a better glance, I use multiple function nodes for lets say JSON-attributes and go on with them. In my specific use case, I pick some special attributes and send them to distinct MQTT-topics. So far, so good, al…

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## [Dashboarda veri girip sisteme aktarım yapma](https://discourse.nodered.org/t/dashboarda-veri-girip-sisteme-aktarim-yapma/61865)

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**Author:** [@kursataydac](https://discourse.nodered.org/u/kursataydac)\
**Replies:** 0\
**Last updated:** [27 April 2022 11:48 UTC](https://discourse.nodered.org/t/dashboarda-veri-girip-sisteme-aktarim-yapma/61865 "2022-04-27T11:48:50Z")

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Dashboard üzerine girdiğim text verilerini veri kontrol sayfasına aktarmak için function koduna ihtiyacım var yardımcı olabilir misiniz

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## [Problems with HueMagic Palette](https://discourse.nodered.org/t/problems-with-huemagic-palette/61859)

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**Author:** [@logol01](https://discourse.nodered.org/u/logol01)\
**Replies:** 1\
**Last updated:** [27 April 2022 11:17 UTC](https://discourse.nodered.org/t/problems-with-huemagic-palette/61859 "2022-04-27T11:17:40Z")

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Hi, im Using node-red-contrib-huemagic Version 4.2.2 I have the problem, if I configure my Philips Hue Bridge. When I set up my hue Bridge, and configure my Flow, (Senic Friends of Hue Switch) everything works fine. …

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## [I want to create a flow that returns to 1st tab after 10-secs from 2nd tab](https://discourse.nodered.org/t/i-want-to-create-a-flow-that-returns-to-1st-tab-after-10-secs-from-2nd-tab/61838)

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**Author:** [@jjs0426](https://discourse.nodered.org/u/jjs0426)\
**Replies:** 1\
**Last updated:** [27 April 2022 07:20 UTC](https://discourse.nodered.org/t/i-want-to-create-a-flow-that-returns-to-1st-tab-after-10-secs-from-2nd-tab/61838 "2022-04-27T07:20:45Z")

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Hey I am new to Node-Red so forgive me if this question is stupid I want to create a flow that returns to the first tab after 10 seconds from the second tab, but I don't have enough knowledge.

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## [Need help and I'm an absolute beginner](https://discourse.nodered.org/t/need-help-and-im-an-absolute-beginner/61680)

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**Author:** [@logol01](https://discourse.nodered.org/u/logol01)\
**Replies:** 2\
**Last updated:** [27 April 2022 10:25 UTC](https://discourse.nodered.org/t/need-help-and-im-an-absolute-beginner/61680 "2022-04-27T10:25:15Z")

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I will create an Flow, where the Friends of hue Switch (there are 4 Buttons) send an 1 to garden door if I press the button. I don't know which node I have to use for that and I have no idea how I get an "1" to the "G…

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## [I want to resize the cell of the table](https://discourse.nodered.org/t/i-want-to-resize-the-cell-of-the-table/61801)

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**Author:** [@Rocky](https://discourse.nodered.org/u/Rocky)\
**Replies:** 2\
**Last updated:** [27 April 2022 08:14 UTC](https://discourse.nodered.org/t/i-want-to-resize-the-cell-of-the-table/61801 "2022-04-27T08:14:58Z")

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Hi, I am new in node red, Facing some problem can any body help me. want to reduce space between table cells.

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## [Cbor decoder problem with mqtt](https://discourse.nodered.org/t/cbor-decoder-problem-with-mqtt/61862)

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**Author:** [@charugaa](https://discourse.nodered.org/u/charugaa)\
**Replies:** 0\
**Last updated:** [27 April 2022 10:02 UTC](https://discourse.nodered.org/t/cbor-decoder-problem-with-mqtt/61862 "2022-04-27T10:02:03Z")

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Can anyone tell me where i am wrong? I decoded the CBOR message and the debug shows me all the data properly, but when I send to the mqtt server they don't get the data but only the place names. the picture shows what a…

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## [How to covert row string (tcp in) into JSON object](https://discourse.nodered.org/t/how-to-covert-row-string-tcp-in-into-json-object/61853)

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**Author:** [@propre](https://discourse.nodered.org/u/propre)\
**Replies:** 3\
**Last updated:** [27 April 2022 09:52 UTC](https://discourse.nodered.org/t/how-to-covert-row-string-tcp-in-into-json-object/61853 "2022-04-27T09:52:23Z")

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Node (TCP in) with payload is string "GW\_ID:155507366,TYPE:T&H,ID:ABC1212393,STAT:00000001,T:30.5,H:51.4%,Time:0-0-0 0:0:0". How to covert it into JSON object? It contains ":". Thanks

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## [Looking for guidance to add a functional "delete" link to delete file(s) in a folder](https://discourse.nodered.org/t/looking-for-guidance-to-add-a-functional-delete-link-to-delete-file-s-in-a-folder/61854)

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**Author:** [@zany](https://discourse.nodered.org/u/zany)\
**Replies:** 2\
**Last updated:** [27 April 2022 08:32 UTC](https://discourse.nodered.org/t/looking-for-guidance-to-add-a-functional-delete-link-to-delete-file-s-in-a-folder/61854 "2022-04-27T08:32:57Z")

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Continuing the discussion from Unable to download files from the browser: Hi everyone, i'm a newbiew to NodeRed and came across this post which is able to create a list from a folder and download link. it works great! h…

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## [Meaning of ":fn" in the end of URL](https://discourse.nodered.org/t/meaning-of-fn-in-the-end-of-url/61836)

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**Author:** [@Kai](https://discourse.nodered.org/u/Kai)\
**Replies:** 4\
**Last updated:** [27 April 2022 07:00 UTC](https://discourse.nodered.org/t/meaning-of-fn-in-the-end-of-url/61836 "2022-04-27T07:00:57Z")

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Hi, I ever saw someone will put the words ":fn" in the end of URL may I know what does it means?

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## [Raspberry Pi opens Node-red with an error](https://discourse.nodered.org/t/raspberry-pi-opens-node-red-with-an-error/61834)

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**Author:** [@Purecade](https://discourse.nodered.org/u/Purecade)\
**Replies:** 3\
**Last updated:** [27 April 2022 06:51 UTC](https://discourse.nodered.org/t/raspberry-pi-opens-node-red-with-an-error/61834 "2022-04-27T06:51:53Z")

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Hello, I tried to use open Node-red, but it failed。What should I do to solve this problem？ root@RevPi64360:/home/pi# node-red-start Start Node-RED Once Node-RED has started, point a browser at http://192.168.1.102:1…

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## [Text not being shown correctly in subflow node](https://discourse.nodered.org/t/text-not-being-shown-correctly-in-subflow-node/61842)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 2\
**Last updated:** [27 April 2022 06:46 UTC](https://discourse.nodered.org/t/text-not-being-shown-correctly-in-subflow-node/61842 "2022-04-27T06:46:52Z")

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Even if I resize the window the text is not completely shown. Ok, I have a theme installed but I hope that isn't a cause.

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## [Options in subflow to have a dropdown list of options](https://discourse.nodered.org/t/options-in-subflow-to-have-a-dropdown-list-of-options/61841)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 2\
**Last updated:** [27 April 2022 06:45 UTC](https://discourse.nodered.org/t/options-in-subflow-to-have-a-dropdown-list-of-options/61841 "2022-04-27T06:45:10Z")

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You can set things to be constraints in the subflow. I have a setting that has multiple options, so boolean doesn't quite cut it. So is there a way to make a drop down where that option is? eg: So when you open th…

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## [Node-red-contrib-msal-certauth does not load/install](https://discourse.nodered.org/t/node-red-contrib-msal-certauth-does-not-load-install/61837)

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**Author:** [@skipware](https://discourse.nodered.org/u/skipware)\
**Replies:** 0\
**Last updated:** [27 April 2022 04:30 UTC](https://discourse.nodered.org/t/node-red-contrib-msal-certauth-does-not-load-install/61837 "2022-04-27T04:30:10Z")

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When attempting to load the load from 'manage palette' received failed. The logs shows: 2022-04-27T03:02:21.276Z Install : node-red-contrib-msal-certauth 1.0.14 2022-04-27T03:02:21.302Z npm install --no-audit --no-up…

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## [Where do I submit feedback on the documentation? I've found a slight problem](https://discourse.nodered.org/t/where-do-i-submit-feedback-on-the-documentation-ive-found-a-slight-problem/61828)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 2\
**Last updated:** [26 April 2022 23:59 UTC](https://discourse.nodered.org/t/where-do-i-submit-feedback-on-the-documentation-ive-found-a-slight-problem/61828 "2022-04-26T23:59:56Z")

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Reading some stuff I have found a slight problem with wording.... (Maybe I am being petty. I can't say.) I would just like to ask where is the best place to mention it?

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## [Need help with my subflow - deepcopy msg problem](https://discourse.nodered.org/t/need-help-with-my-subflow-deepcopy-msg-problem/61796)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 12\
**Last updated:** [26 April 2022 22:14 UTC](https://discourse.nodered.org/t/need-help-with-my-subflow-deepcopy-msg-problem/61796 "2022-04-26T22:14:09Z")

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I am trying to write my own filter (RBE) node but its mode can be changed with commands. It works for simple things, but when I get a complex message it doesn't seem to work. Here is a flow with the subflow in it. The…

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## ["Best Practice" way to do math on a stream of data](https://discourse.nodered.org/t/best-practice-way-to-do-math-on-a-stream-of-data/61815)

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**Author:** [@SkyMo](https://discourse.nodered.org/u/SkyMo)\
**Replies:** 0\
**Last updated:** [26 April 2022 18:32 UTC](https://discourse.nodered.org/t/best-practice-way-to-do-math-on-a-stream-of-data/61815 "2022-04-26T18:32:24Z")

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Hi. I have a string of numbers like "1 2 3 4 5 6" (it's way more complicated than that, but this illustrates the idea) and they represent measurements. I use buffer parser to combine them into topic/value messages. I…

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## [Defining and reuse a "classic" JS function](https://discourse.nodered.org/t/defining-and-reuse-a-classic-js-function/16372)

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**Author:** [@BruceFeuillette](https://discourse.nodered.org/u/BruceFeuillette)\
**Replies:** 15\
**Last updated:** [26 April 2022 19:45 UTC](https://discourse.nodered.org/t/defining-and-reuse-a-classic-js-function/16372 "2022-04-26T19:45:19Z")

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Hello ! I'm a bit lost in node-red, maybe I didn't wired the right nodes together... :sweat\_smile: The context I'm working with LoRa sensors that send hexa code in the payload. Those datas are specific informations ba…

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## [How to deploy an node-red on Vercel](https://discourse.nodered.org/t/how-to-deploy-an-node-red-on-vercel/61813)

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**Author:** [@d0d04m3](https://discourse.nodered.org/u/d0d04m3)\
**Replies:** 1\
**Last updated:** [26 April 2022 17:11 UTC](https://discourse.nodered.org/t/how-to-deploy-an-node-red-on-vercel/61813 "2022-04-26T17:11:12Z")

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hi any node-red template for Vercel

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## [Cannot add any extensions or cannot update any nodes - GUI Interface](https://discourse.nodered.org/t/cannot-add-any-extensions-or-cannot-update-any-nodes-gui-interface/61811)

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**Author:** [@sn19](https://discourse.nodered.org/u/sn19)\
**Replies:** 2\
**Last updated:** [26 April 2022 16:19 UTC](https://discourse.nodered.org/t/cannot-add-any-extensions-or-cannot-update-any-nodes-gui-interface/61811 "2022-04-26T16:19:58Z")

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reason: getaddrinfo EAI\_AGAIN registry.npmjs.org registry.npmjs.org:443

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## [Template Help displaying objects in a list](https://discourse.nodered.org/t/template-help-displaying-objects-in-a-list/61773)

<div class="topic-metadata">

**Author:** [@jmorris644](https://discourse.nodered.org/u/jmorris644)\
**Replies:** 3\
**Last updated:** [26 April 2022 16:00 UTC](https://discourse.nodered.org/t/template-help-displaying-objects-in-a-list/61773 "2022-04-26T16:00:27Z")

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I need a little help with Templates. I have a msg.on topic that has an array of objects with a single field called friendlyName. I want to iterate through these objects and display the friendly names. Here is my code. I …

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## [MQTT Dynamic subscription disconnects after switching brokers](https://discourse.nodered.org/t/mqtt-dynamic-subscription-disconnects-after-switching-brokers/61786)

<div class="topic-metadata">

**Author:** [@lill17](https://discourse.nodered.org/u/lill17)\
**Replies:** 12\
**Last updated:** [26 April 2022 15:16 UTC](https://discourse.nodered.org/t/mqtt-dynamic-subscription-disconnects-after-switching-brokers/61786 "2022-04-26T15:16:59Z")

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Hello! Currently my flow has the funcitonality of switching brokers dynamically directly from the dashboard. This works and i am able to connect to multiple brokers on the fly. The only real problem i have is if i were…

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## [Writing data to Firebase Realtime Database](https://discourse.nodered.org/t/writing-data-to-firebase-realtime-database/61805)

<div class="topic-metadata">

**Author:** [@zombiedog](https://discourse.nodered.org/u/zombiedog)\
**Replies:** 0\
**Last updated:** [26 April 2022 14:20 UTC](https://discourse.nodered.org/t/writing-data-to-firebase-realtime-database/61805 "2022-04-26T14:20:01Z")

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I am new to node red and I am trying to use it to send data to firebase realtime database. How can I make it so that I don't just add a new instance of temperature but instead create a new key called temperature every t…

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