# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=68

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

**Page:** 69

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## [Node-red resources](https://discourse.nodered.org/t/node-red-resources/93626)

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**Author:** [@meccip](https://discourse.nodered.org/u/meccip)\
**Replies:** 4\
**Last updated:** [2 December 2024 15:47 UTC](https://discourse.nodered.org/t/node-red-resources/93626 "2024-12-02T15:47:15Z")

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Hello, I will get some data out of Victron Smart Solar via ve.Direct connector. I have 2 options: with cable on serial connected to usb and with home esp to mqtt. My question is: What method will use more resources fro…

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## [Test if flow variable, i.e. context variable exists?](https://discourse.nodered.org/t/test-if-flow-variable-i-e-context-variable-exists/93616)

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**Author:** [@Jibun-no-Kage](https://discourse.nodered.org/u/Jibun-no-Kage)\
**Replies:** 4\
**Last updated:** [2 December 2024 15:25 UTC](https://discourse.nodered.org/t/test-if-flow-variable-i-e-context-variable-exists/93616 "2024-12-02T15:25:08Z")

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Test if flow variable, i.e. context variable exists? I have tried... if (flow.get('Test') || false) { node.warn('Test Exist') } else { node.warn('Test Not Exist') flow.set('Test', true) } But is this legit? The examp…

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## [Node-Red local install on Win machine](https://discourse.nodered.org/t/node-red-local-install-on-win-machine/93622)

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**Author:** [@Guetta](https://discourse.nodered.org/u/Guetta)\
**Replies:** 3\
**Last updated:** [2 December 2024 13:59 UTC](https://discourse.nodered.org/t/node-red-local-install-on-win-machine/93622 "2024-12-02T13:59:54Z")

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Hi folks, I am new to the forum but I had a question for you. I installed on all our machines an image of Win 11 with Node-Red on board, this machine was not in domain and so following the directions from the site I in…

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## [Node Red on synology nas](https://discourse.nodered.org/t/node-red-on-synology-nas/93599)

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**Author:** [@ath0rus](https://discourse.nodered.org/u/ath0rus)\
**Replies:** 6\
**Last updated:** [2 December 2024 12:35 UTC](https://discourse.nodered.org/t/node-red-on-synology-nas/93599 "2024-12-02T12:35:13Z")

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In a few days time I should have a DS224+ nas arriving along side some 16tb drives (exos x16 drives on sale). I was thinking of installing node red in a docker on the nas to allow me to transfer files from other pc's (Ga…

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## [Redis multiple subscriptions](https://discourse.nodered.org/t/redis-multiple-subscriptions/93619)

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**Author:** [@mstoffel-sag](https://discourse.nodered.org/u/mstoffel-sag)\
**Replies:** 0\
**Last updated:** [2 December 2024 09:39 UTC](https://discourse.nodered.org/t/redis-multiple-subscriptions/93619 "2024-12-02T09:39:05Z")

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Hi everybody, hope your all well! I have to subscribe to multiple redis topics using. node-red-contrib-redis (node) - Node-RED Is there any way other than creating as many redis-in nodes as I have topics? Would be nice…

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## [Delay node - rate limit not working for all messages?](https://discourse.nodered.org/t/delay-node-rate-limit-not-working-for-all-messages/93439)

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**Author:** [@ThingsTinkerer](https://discourse.nodered.org/u/ThingsTinkerer)\
**Replies:** 25\
**Last updated:** [2 December 2024 08:35 UTC](https://discourse.nodered.org/t/delay-node-rate-limit-not-working-for-all-messages/93439 "2024-12-02T08:35:19Z")

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Tried using delay node to limit how many messages are passed through. I want to discard all intermediate messages. Action: Rate Limit All Messages Rate: 1 msg per 1 second Drop intermediate messages Ì then go on to …

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## [Workspace stops working to many connections? on Raspberry Pi](https://discourse.nodered.org/t/workspace-stops-working-to-many-connections-on-raspberry-pi/93522)

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**Author:** [@KarelSebela](https://discourse.nodered.org/u/KarelSebela)\
**Replies:** 28\
**Last updated:** [1 December 2024 21:45 UTC](https://discourse.nodered.org/t/workspace-stops-working-to-many-connections-on-raspberry-pi/93522 "2024-12-01T21:45:53Z")

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I have installation on RaspberryPi. Node-red, DB. Everithing is working fine. after several hours I cannot login to web. not flow space nor user pages are available. But when I check data in DB they are growing. Nod…

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## [Insert text from web to Mysql, and show it on website securely](https://discourse.nodered.org/t/insert-text-from-web-to-mysql-and-show-it-on-website-securely/93590)

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**Author:** [@hbb999](https://discourse.nodered.org/u/hbb999)\
**Replies:** 4\
**Last updated:** [1 December 2024 19:46 UTC](https://discourse.nodered.org/t/insert-text-from-web-to-mysql-and-show-it-on-website-securely/93590 "2024-12-01T19:46:17Z")

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I send an url to our clients to give a feedback about our service: https://mycompany.com/evaluate?user\_id=1234 They can write some sentences into a textarea, and I send data back with POST method. I insert it with para…

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## [Issue creating modbus connection from Nodered to productivity suite](https://discourse.nodered.org/t/issue-creating-modbus-connection-from-nodered-to-productivity-suite/93583)

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**Author:** [@jpho](https://discourse.nodered.org/u/jpho)\
**Replies:** 3\
**Last updated:** [1 December 2024 09:46 UTC](https://discourse.nodered.org/t/issue-creating-modbus-connection-from-nodered-to-productivity-suite/93583 "2024-12-01T09:46:10Z")

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I am trying to make a modbus server on Node Red and have a client on a different software, Productivity Suite, access the Node Red modbus server. I believe I have my nodes on Node Red working, and my ladder logic on Prod…

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## [Configuring @sammachin/node-red-matter-bridge to work with Google/Nest speakers](https://discourse.nodered.org/t/configuring-sammachin-node-red-matter-bridge-to-work-with-google-nest-speakers/93203)

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**Author:** [@Paul-Reed](https://discourse.nodered.org/u/Paul-Reed)\
**Replies:** 29\
**Last updated:** [1 December 2024 13:05 UTC](https://discourse.nodered.org/t/configuring-sammachin-node-red-matter-bridge-to-work-with-google-nest-speakers/93203 "2024-12-01T13:05:08Z")

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I'm documenting my experience of using node-red-matter-bridge to control my home IoT, in case it helps or motivates others to give it a try :smiley: My knowledge of matter is very limited, so this is my interpretation, …

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## [Dashboard2 blinking Button](https://discourse.nodered.org/t/dashboard2-blinking-button/93576)

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**Author:** [@edstobi](https://discourse.nodered.org/u/edstobi)\
**Replies:** 10\
**Last updated:** [30 November 2024 22:45 UTC](https://discourse.nodered.org/t/dashboard2-blinking-button/93576 "2024-11-30T22:45:13Z")

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Hello, Can anyone help me? I would like to create a button (Button Group) in the dashboard: Start (value: false, color: green). Stop (value: true, color: red). The button should be set to Start and be green by defau…

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## [File Name troubles](https://discourse.nodered.org/t/file-name-troubles/93592)

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**Author:** [@alexander77](https://discourse.nodered.org/u/alexander77)\
**Replies:** 7\
**Last updated:** [30 November 2024 22:08 UTC](https://discourse.nodered.org/t/file-name-troubles/93592 "2024-11-30T22:08:39Z")

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Hi, i have a data collector (DS18B20), collect 200 samples and write the data in a .csv file. The filename is composed from date and time, resulting in filenames like '2024-11-30 18:17.csv' This is how i can read it in…

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## [Comparing Strings to numbers in Wait node?](https://discourse.nodered.org/t/comparing-strings-to-numbers-in-wait-node/93511)

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**Author:** [@vaderag](https://discourse.nodered.org/u/vaderag)\
**Replies:** 7\
**Last updated:** [30 November 2024 17:08 UTC](https://discourse.nodered.org/t/comparing-strings-to-numbers-in-wait-node/93511 "2024-11-30T17:08:52Z")

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I wonder if someone can help me here - I have a temperature value which for some reason, is a string. In some nodes I can force it to act as a number (and I have done so in the flow below to be able to add 2 to it) Esse…

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## [Is node-red-contrib-alexa-remote2-applestrudel working in november 2024?](https://discourse.nodered.org/t/is-node-red-contrib-alexa-remote2-applestrudel-working-in-november-2024/93568)

<div class="topic-metadata">

**Author:** [@questuk](https://discourse.nodered.org/u/questuk)\
**Replies:** 8\
**Last updated:** [30 November 2024 15:55 UTC](https://discourse.nodered.org/t/is-node-red-contrib-alexa-remote2-applestrudel-working-in-november-2024/93568 "2024-11-30T15:55:36Z")

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Hi, about a year ago I had Alexa working, but then earlier this year it gave me problems so I stopped using it, today I upgraded to the latest 5.0.50 version but I get no response from 'On device activity node' wired to …

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## [Update Node-RED with a new flow](https://discourse.nodered.org/t/update-node-red-with-a-new-flow/93566)

<div class="topic-metadata">

**Author:** [@krambriw](https://discourse.nodered.org/u/krambriw)\
**Replies:** 2\
**Last updated:** [30 November 2024 08:17 UTC](https://discourse.nodered.org/t/update-node-red-with-a-new-flow/93566 "2024-11-30T08:17:21Z")

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Hi, was just wondering about the eventual possibilities to let Node-RED update it's own flow a) Sending a new flow file to Node-RED (I'm thinking via MQTT) and use the file node to save it b) Then Node-RED activates a …

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## [Best Linux Version to Node-Red](https://discourse.nodered.org/t/best-linux-version-to-node-red/93449)

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**Author:** [@bobfield](https://discourse.nodered.org/u/bobfield)\
**Replies:** 26\
**Last updated:** [30 November 2024 13:25 UTC](https://discourse.nodered.org/t/best-linux-version-to-node-red/93449 "2024-11-30T13:25:59Z")

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Hi Dears, I will install a node-red for automatic data collect in a Linux Desktop. What is the most recommended version of Linux to download and use with node-red ? Thanks, Roberto

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## [Integrate node-red-contrib-users with mysql](https://discourse.nodered.org/t/integrate-node-red-contrib-users-with-mysql/93581)

<div class="topic-metadata">

**Author:** [@imam.mushlihin](https://discourse.nodered.org/u/imam.mushlihin)\
**Replies:** 1\
**Last updated:** [29 November 2024 22:25 UTC](https://discourse.nodered.org/t/integrate-node-red-contrib-users-with-mysql/93581 "2024-11-29T22:25:40Z")

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How to integrate node-red-contrib-users with mysql so that we can store user/password on mysql

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## [Embedding NR into an existing app](https://discourse.nodered.org/t/embedding-nr-into-an-existing-app/93561)

<div class="topic-metadata">

**Author:** [@Pratham](https://discourse.nodered.org/u/Pratham)\
**Replies:** 4\
**Last updated:** [29 November 2024 18:42 UTC](https://discourse.nodered.org/t/embedding-nr-into-an-existing-app/93561 "2024-11-29T18:42:22Z")

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Hi, I'm trying to embed node red in my nodejs project referring to Embedding into an existing app : Node-RED. but it try to build executable for my project I am not able to my package. json file { "name": "nodered",…

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## [How is your experience on Node-RED, MQTT and Linux for 24/7 data logger?](https://discourse.nodered.org/t/how-is-your-experience-on-node-red-mqtt-and-linux-for-24-7-data-logger/93471)

<div class="topic-metadata">

**Author:** [@Leo\_3](https://discourse.nodered.org/u/Leo_3)\
**Replies:** 16\
**Last updated:** [29 November 2024 13:25 UTC](https://discourse.nodered.org/t/how-is-your-experience-on-node-red-mqtt-and-linux-for-24-7-data-logger/93471 "2024-11-29T13:25:37Z")

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Which MQTT broker (self hosted vs. Mosquitto or others)? Which Linux? Command line or with Desktop GUI?

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## [Merge two payload messages based on same value in both payloads](https://discourse.nodered.org/t/merge-two-payload-messages-based-on-same-value-in-both-payloads/93562)

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**Author:** [@kaaw\_w0lf](https://discourse.nodered.org/u/kaaw_w0lf)\
**Replies:** 6\
**Last updated:** [29 November 2024 10:30 UTC](https://discourse.nodered.org/t/merge-two-payload-messages-based-on-same-value-in-both-payloads/93562 "2024-11-29T10:30:13Z")

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Hi there, I am currently struggling with the merging of two payload messages. I perform two http requests and receive a payload message back from both. Now I want to merge these two payloads using an identical value in…

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## [Remote access from Cloud NodeRED to Tuya Bridge](https://discourse.nodered.org/t/remote-access-from-cloud-nodered-to-tuya-bridge/93339)

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**Author:** [@its-Zeke](https://discourse.nodered.org/u/its-Zeke)\
**Replies:** 10\
**Last updated:** [29 November 2024 08:09 UTC](https://discourse.nodered.org/t/remote-access-from-cloud-nodered-to-tuya-bridge/93339 "2024-11-29T08:09:33Z")

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Hey there, I have the following scenario: I would like to implement smart home for my grandmother. From my home I connect the NodeRED in the cloud with the local Bridge. (how ?! :smiley: ) I send the bridge to my gra…

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## [Flows api to create flow programmatically](https://discourse.nodered.org/t/flows-api-to-create-flow-programmatically/93531)

<div class="topic-metadata">

**Author:** [@Pratham](https://discourse.nodered.org/u/Pratham)\
**Replies:** 2\
**Last updated:** [29 November 2024 07:15 UTC](https://discourse.nodered.org/t/flows-api-to-create-flow-programmatically/93531 "2024-11-29T07:15:54Z")

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Hi, i am trying to create flows using http://localhost:1880/flows It seems to create the flow but every time I hit the endpoint to create new flows it clears the previous and creates the only new one and again i have t…

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## [Need to get at a node from a backup](https://discourse.nodered.org/t/need-to-get-at-a-node-from-a-backup/93552)

<div class="topic-metadata">

**Author:** [@cymplecy](https://discourse.nodered.org/u/cymplecy)\
**Replies:** 2\
**Last updated:** [28 November 2024 19:04 UTC](https://discourse.nodered.org/t/need-to-get-at-a-node-from-a-backup/93552 "2024-11-28T19:04:25Z")

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So, I'm making daily backups of my Pi NR install and I need to grab a node from within the backup so I can re-import it back into the original. What's going to be the easiest way to do this? The backup I have is a comp…

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## [Passing values through nodes that removes everything](https://discourse.nodered.org/t/passing-values-through-nodes-that-removes-everything/93545)

<div class="topic-metadata">

**Author:** [@ThingsTinkerer](https://discourse.nodered.org/u/ThingsTinkerer)\
**Replies:** 3\
**Last updated:** [28 November 2024 17:46 UTC](https://discourse.nodered.org/t/passing-values-through-nodes-that-removes-everything/93545 "2024-11-28T17:46:47Z")

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I know it depends on implementation of each individual node how they handle other members of msg. But some nodes I work with discards everything and only outputs for example topic & payload. It's super annoying when you …

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## [Searching for node types amongst node packages](https://discourse.nodered.org/t/searching-for-node-types-amongst-node-packages/93550)

<div class="topic-metadata">

**Author:** [@gregorius](https://discourse.nodered.org/u/gregorius)\
**Replies:** 4\
**Last updated:** [28 November 2024 17:09 UTC](https://discourse.nodered.org/t/searching-for-node-types-amongst-node-packages/93550 "2024-11-28T17:09:46Z")

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Hi There, is there a simple way to find packages the provide specific node types? For example like this: turns out when I search for string, I get this: the package in red actually provides the node type string …

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## [Installing N-R on bazzite](https://discourse.nodered.org/t/installing-n-r-on-bazzite/93542)

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**Author:** [@darkdude](https://discourse.nodered.org/u/darkdude)\
**Replies:** 1\
**Last updated:** [28 November 2024 11:53 UTC](https://discourse.nodered.org/t/installing-n-r-on-bazzite/93542 "2024-11-28T11:53:42Z")

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Hi, I'm trying to install Node Red on bazzitte (a gaming oriented, Fedora based distro) using the official installation script. Most of my Linux experience is with Debian based distros, therefore I'm not familiar with …

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## [Problem using node-red-contrib-graph-oauth-login](https://discourse.nodered.org/t/problem-using-node-red-contrib-graph-oauth-login/93510)

<div class="topic-metadata">

**Author:** [@egrootoonk](https://discourse.nodered.org/u/egrootoonk)\
**Replies:** 3\
**Last updated:** [28 November 2024 08:42 UTC](https://discourse.nodered.org/t/problem-using-node-red-contrib-graph-oauth-login/93510 "2024-11-28T08:42:50Z")

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I'm struggling to access the MS Graph API using the node-red-contrib-graph-oauth-login. Flow: Inject | node-red-contrib-graph-oauth-login | http request | Debug I've setup the Azure part and it's working. If I grab the…

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## [Troubleshooting Blank Page Issue with Node-RED Service Behind AWS API Gateway](https://discourse.nodered.org/t/troubleshooting-blank-page-issue-with-node-red-service-behind-aws-api-gateway/93507)

<div class="topic-metadata">

**Author:** [@vidit.khemka](https://discourse.nodered.org/u/vidit.khemka)\
**Replies:** 8\
**Last updated:** [28 November 2024 06:42 UTC](https://discourse.nodered.org/t/troubleshooting-blank-page-issue-with-node-red-service-behind-aws-api-gateway/93507 "2024-11-28T06:42:33Z")

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Hello everyone, I’m struggling to get AWS API Gateway to properly load my Node-RED service. I’m encountering an issue where I just see a blank page. When I access the application directly via its IP address (bypassing …

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## [Philips Hue HTTPS](https://discourse.nodered.org/t/philips-hue-https/93528)

<div class="topic-metadata">

**Author:** [@TheadehAnank](https://discourse.nodered.org/u/TheadehAnank)\
**Replies:** 0\
**Last updated:** [28 November 2024 01:14 UTC](https://discourse.nodered.org/t/philips-hue-https/93528 "2024-11-28T01:14:54Z")

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My Philips Hue integrations stopped working. Apprently HTTP is depcrated, so the HTTP request node must be configured for HTTPS. I've enabled SSL/TLS added the CA certificate posted on the Hue Developer site set the S…

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## [Querying databricks from Node Red](https://discourse.nodered.org/t/querying-databricks-from-node-red/93490)

<div class="topic-metadata">

**Author:** [@stephr](https://discourse.nodered.org/u/stephr)\
**Replies:** 2\
**Last updated:** [27 November 2024 23:39 UTC](https://discourse.nodered.org/t/querying-databricks-from-node-red/93490 "2024-11-27T23:39:39Z")

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Hi, was wondering if anyone has experience querying Databricks (on Azure) from Node Red? I was hoping there might be an existing library that I can use, rather than building my own flow from scratch, but so far I haven't…

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