# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=347

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

**Page:** 348

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## [Dynamic websocket URL?](https://discourse.nodered.org/t/dynamic-websocket-url/65395)

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**Author:** [@JetForMe](https://discourse.nodered.org/u/JetForMe)\
**Replies:** 0\
**Last updated:** [21 July 2022 00:29 UTC](https://discourse.nodered.org/t/dynamic-websocket-url/65395 "2022-07-21T00:29:17Z")

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I'm trying to set up a websocket connection to the Sense energy monitor API. The URL takes the form wss://clientrt.sense.com/monitors/%s/realtimefeed?access\_token=%s, and thus is somewhat dynamic. I have a login flow tha…

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## [Deep copy from flow (array of objects) variable to payload oddness?](https://discourse.nodered.org/t/deep-copy-from-flow-array-of-objects-variable-to-payload-oddness/65394)

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**Author:** [@Nodi.Rubrum](https://discourse.nodered.org/u/Nodi.Rubrum)\
**Replies:** 0\
**Last updated:** [20 July 2022 22:58 UTC](https://discourse.nodered.org/t/deep-copy-from-flow-array-of-objects-variable-to-payload-oddness/65394 "2022-07-20T22:58:27Z")

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Read the description of deep copy on a change node, makes sense, but I think I am seeing odd behavior? If I inject a change node, that copies a flow (array of objects) variable into payload then sends same to say a UI t…

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## [Flow shows error with app.min.js](https://discourse.nodered.org/t/flow-shows-error-with-app-min-js/65195)

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**Author:** [@mynodered](https://discourse.nodered.org/u/mynodered)\
**Replies:** 7\
**Last updated:** [20 July 2022 21:14 UTC](https://discourse.nodered.org/t/flow-shows-error-with-app-min-js/65195 "2022-07-20T21:14:21Z")

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I am trying the code posted in Real-Time Data Chart with ChartJs Streaming - #2 by Mathieu. But I get following error coming from app.min.js: and the flow is shown below, How could I solve these errors?

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## [Node-red-node-email (get) not dedected by Complete node](https://discourse.nodered.org/t/node-red-node-email-get-not-dedected-by-complete-node/20129)

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**Author:** [@DamianosS](https://discourse.nodered.org/u/DamianosS)\
**Replies:** 16\
**Last updated:** [20 July 2022 20:01 UTC](https://discourse.nodered.org/t/node-red-node-email-get-not-dedected-by-complete-node/20129 "2022-07-20T20:01:20Z")

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Node Red v1.0.2 running on Homematic (https://github.com/rdmtc/RedMatic) I have discovered that the node-red-node-email (get) does not provide complete status according to https://nodered.org/blog/2019/09/20/node-done. …

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## [Where can I find up to date info about RED.events?](https://discourse.nodered.org/t/where-can-i-find-up-to-date-info-about-red-events/16614)

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**Author:** [@edorgeville](https://discourse.nodered.org/u/edorgeville)\
**Replies:** 8\
**Last updated:** [20 July 2022 19:48 UTC](https://discourse.nodered.org/t/where-can-i-find-up-to-date-info-about-red-events/16614 "2022-07-20T19:48:29Z")

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This page starts with a big deprecation warning : https://github.com/node-red/node-red/wiki/API-Reference#server-library-register The API docs aren't really helpful in my case: https://nodered.org/docs/api/modules/v/0.2…

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## [NR Projects - GIT intergration - username on commit](https://discourse.nodered.org/t/nr-projects-git-intergration-username-on-commit/65223)

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**Author:** [@SandeepA](https://discourse.nodered.org/u/SandeepA)\
**Replies:** 3\
**Last updated:** [20 July 2022 18:25 UTC](https://discourse.nodered.org/t/nr-projects-git-intergration-username-on-commit/65223 "2022-07-20T18:25:53Z")

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Hi , I plan to have below set up . Local GIT Node Red with projects integrated to it. Multiple users created on Node Red. I was doing some tests with my local installation. I created 2 users under adminAuth - admin1 …

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## [Error in 3.0 upgrade notes. BIG problem with latest Node.JS (v16.6)](https://discourse.nodered.org/t/error-in-3-0-upgrade-notes-big-problem-with-latest-node-js-v16-6/65313)

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**Author:** [@bwims](https://discourse.nodered.org/u/bwims)\
**Replies:** 24\
**Last updated:** [20 July 2022 16:20 UTC](https://discourse.nodered.org/t/error-in-3-0-upgrade-notes-big-problem-with-latest-node-js-v16-6/65313 "2022-07-20T16:20:55Z")

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In the upgrade notes for v3.0 it says: " Node.js 14.x or later required" ; foolishly assuming that meant that the latest version of Node.js had been tested, I blithely installed the latest version, 16.16.0 LTS (Recommen…

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## [Node Red 3, Crashing After Reboot? Seems like npm (db repo) is getting corrupted?](https://discourse.nodered.org/t/node-red-3-crashing-after-reboot-seems-like-npm-db-repo-is-getting-corrupted/65342)

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**Author:** [@Nodi.Rubrum](https://discourse.nodered.org/u/Nodi.Rubrum)\
**Replies:** 12\
**Last updated:** [20 July 2022 15:53 UTC](https://discourse.nodered.org/t/node-red-3-crashing-after-reboot-seems-like-npm-db-repo-is-getting-corrupted/65342 "2022-07-20T15:53:19Z")

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(error resulting) Starting as a systemd service. nodered.service: Main process exited, code=killed, status=4/ILL nodered.service: Failed with result 'signal'. Steps to recreate issue... install Pi OS 11 apt update a…

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## [Failing in creating a JSON when the example I'm following is working](https://discourse.nodered.org/t/failing-in-creating-a-json-when-the-example-im-following-is-working/65374)

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**Author:** [@vongomben](https://discourse.nodered.org/u/vongomben)\
**Replies:** 2\
**Last updated:** [20 July 2022 15:49 UTC](https://discourse.nodered.org/t/failing-in-creating-a-json-when-the-example-im-following-is-working/65374 "2022-07-20T15:49:44Z")

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Hi! I'm following this tutorial on creating a JSON to be later embedded in a mirror. Here is the code with english translated comments. it works super fine. When I'm trying to embed a string coming from a telegram bot…

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## [Enhancement Request: Link In/Out Properties - Filter Connected Nodes](https://discourse.nodered.org/t/enhancement-request-link-in-out-properties-filter-connected-nodes/65373)

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**Author:** [@MyRandomThoughts](https://discourse.nodered.org/u/MyRandomThoughts)\
**Replies:** 0\
**Last updated:** [20 July 2022 15:08 UTC](https://discourse.nodered.org/t/enhancement-request-link-in-out-properties-filter-connected-nodes/65373 "2022-07-20T15:08:56Z")

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Within the properties pane of the Link In and Link Out nodes there is a filter box to search for existing nodes to select. Can we get a tick box (or other option) to filter only selected items. I use link nodes quite a…

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## [What is the best Cloud platform to control many different Node-Red instances from distance?](https://discourse.nodered.org/t/what-is-the-best-cloud-platform-to-control-many-different-node-red-instances-from-distance/65366)

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**Author:** [@Wilay](https://discourse.nodered.org/u/Wilay)\
**Replies:** 0\
**Last updated:** [20 July 2022 14:12 UTC](https://discourse.nodered.org/t/what-is-the-best-cloud-platform-to-control-many-different-node-red-instances-from-distance/65366 "2022-07-20T14:12:37Z")

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I'm simply wondering which Cloud platform do you guys prefer to remotely control many Node-Red instances. I was considering using IoT Flows, but was curious if more "legit" options such as IBM, Azure or GCP were better a…

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## [EACCES: permission error when using port 80 with Docker images for node 16/18](https://discourse.nodered.org/t/eacces-permission-error-when-using-port-80-with-docker-images-for-node-16-18/65138)

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**Author:** [@TobiasBg](https://discourse.nodered.org/u/TobiasBg)\
**Replies:** 4\
**Last updated:** [20 July 2022 12:25 UTC](https://discourse.nodered.org/t/eacces-permission-error-when-using-port-80-with-docker-images-for-node-16-18/65138 "2022-07-20T12:25:55Z")

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Hi! Now that 3.0 is out, I wanted to use that opportunity to also switch to the Docker images that have a more recent version of node. I've been successfully running this docker-compose.yml file on a RPi 4B: version: …

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## [Basic for loop to build a string (Newbie question)](https://discourse.nodered.org/t/basic-for-loop-to-build-a-string-newbie-question/65360)

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**Author:** [@Kenson](https://discourse.nodered.org/u/Kenson)\
**Replies:** 2\
**Last updated:** [20 July 2022 12:22 UTC](https://discourse.nodered.org/t/basic-for-loop-to-build-a-string-newbie-question/65360 "2022-07-20T12:22:54Z")

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As a newbie, I'm experimenting, one of the things I would like to do is built a "string" to inject variables into SQLite. If I "write" the string it works i.e. : ""topic":"INSERT INTO LiveData(c01,c02,c03,c04,c05,c06,c07…

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## [Telegram not working](https://discourse.nodered.org/t/telegram-not-working/5810)

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**Author:** [@ffoton](https://discourse.nodered.org/u/ffoton)\
**Replies:** 11\
**Last updated:** [20 July 2022 12:19 UTC](https://discourse.nodered.org/t/telegram-not-working/5810 "2022-07-20T12:19:12Z")

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Hi, I am currently using node-red-contrib-telegrambot (https://www.npmjs.com/package/node-red-contrib-telegrambot) but the issue remains on other similar Telegram nodes as well. I am able to send a message using a http…

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## [16X2 i2c lcd display](https://discourse.nodered.org/t/16x2-i2c-lcd-display/65358)

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**Author:** [@SplitSecComp](https://discourse.nodered.org/u/SplitSecComp)\
**Replies:** 0\
**Last updated:** [20 July 2022 10:13 UTC](https://discourse.nodered.org/t/16x2-i2c-lcd-display/65358 "2022-07-20T10:13:15Z")

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Hi. I want to display temperature data on a Waveshare 16x2 i2c display. Can any one help me with node red sample code and/or assistance to get it working. I can get it to display text using the using Python code in a P…

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## [Raspberry pi 3 with node-red](https://discourse.nodered.org/t/raspberry-pi-3-with-node-red/65320)

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**Author:** [@Bomber75](https://discourse.nodered.org/u/Bomber75)\
**Replies:** 7\
**Last updated:** [20 July 2022 09:30 UTC](https://discourse.nodered.org/t/raspberry-pi-3-with-node-red/65320 "2022-07-20T09:30:39Z")

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hi everyone, i am using raspberry pi 3 to use node red, but when i start node red the console shows these errors: node-red.service: Failed to determine user credentials: No such process node-red.service: Failed at s…

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## [Help with function node and multiple inputs](https://discourse.nodered.org/t/help-with-function-node-and-multiple-inputs/63411)

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**Author:** [@TheOzarkWizard](https://discourse.nodered.org/u/TheOzarkWizard)\
**Replies:** 16\
**Last updated:** [20 July 2022 08:03 UTC](https://discourse.nodered.org/t/help-with-function-node-and-multiple-inputs/63411 "2022-07-20T08:03:23Z")

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Hey all, Im terrible with programing, I have made it this far by reading and combining multiple tutorials, however im not sure what I am missing and I feel like I am bashing my head against the wall trying to figure this…

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## [Change node to sort/separate differents objects in array](https://discourse.nodered.org/t/change-node-to-sort-separate-differents-objects-in-array/65308)

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**Author:** [@SaSa](https://discourse.nodered.org/u/SaSa)\
**Replies:** 0\
**Last updated:** [19 July 2022 09:47 UTC](https://discourse.nodered.org/t/change-node-to-sort-separate-differents-objects-in-array/65308 "2022-07-19T09:47:31Z")

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hello all, I have an api request from my database containing some data, the aim is to sort them and send in separate messages or in differents objects at least. the using code is : downlinks = \[ \]; for (var i = 0; i \<…

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## [Error while subscribing to OPC UA client on same time frame as the tags](https://discourse.nodered.org/t/error-while-subscribing-to-opc-ua-client-on-same-time-frame-as-the-tags/65351)

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**Author:** [@vraghu1983](https://discourse.nodered.org/u/vraghu1983)\
**Replies:** 0\
**Last updated:** [20 July 2022 07:04 UTC](https://discourse.nodered.org/t/error-while-subscribing-to-opc-ua-client-on-same-time-frame-as-the-tags/65351 "2022-07-20T07:04:33Z")

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Hi All - I receive a strange error while using OPC UA connection to read some tags of a machine for real time streaming from node-red to power bi All I want to do is to showcase some 20 tags of a machine and display the…

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## [Recommendations on pulling a file from SSH session?](https://discourse.nodered.org/t/recommendations-on-pulling-a-file-from-ssh-session/65193)

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**Author:** [@Nodi.Rubrum](https://discourse.nodered.org/u/Nodi.Rubrum)\
**Replies:** 23\
**Last updated:** [20 July 2022 04:53 UTC](https://discourse.nodered.org/t/recommendations-on-pulling-a-file-from-ssh-session/65193 "2022-07-20T04:53:58Z")

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Recommendations on pulling, on-demand, a file from SSH session? I have a remote device, that I have only SSH access to, I need to connect via SSH, pull a file over the connection, then of course close the SSH session. I…

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## [Fresh install unRaid server](https://discourse.nodered.org/t/fresh-install-unraid-server/65345)

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**Author:** [@Mlitz](https://discourse.nodered.org/u/Mlitz)\
**Replies:** 0\
**Last updated:** [20 July 2022 04:06 UTC](https://discourse.nodered.org/t/fresh-install-unraid-server/65345 "2022-07-20T04:06:14Z")

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I have a fresh unRaid server that I am trying to install Node-red via Docker. I am still new to learning Linux and this is my first node-red install. It will install from the app store and show up on the GUI but will n…

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## [XML validation error](https://discourse.nodered.org/t/xml-validation-error/65301)

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**Author:** [@chawana](https://discourse.nodered.org/u/chawana)\
**Replies:** 4\
**Last updated:** [20 July 2022 01:46 UTC](https://discourse.nodered.org/t/xml-validation-error/65301 "2022-07-20T01:46:13Z")

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@Steve-Mcl as i read topic as your recomended Difficulty to install node-red-contrib-xml-validate/xml-validate but still have issue import(function mode) \[libxml-xsd\] let you advise?

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## [How to turn off script in certain hours](https://discourse.nodered.org/t/how-to-turn-off-script-in-certain-hours/65097)

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**Author:** [@Lizzie](https://discourse.nodered.org/u/Lizzie)\
**Replies:** 4\
**Last updated:** [19 July 2022 23:23 UTC](https://discourse.nodered.org/t/how-to-turn-off-script-in-certain-hours/65097 "2022-07-19T23:23:17Z")

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Hello, I have set up an ac that reacts to temperature sensor data coming from a python script. Can you please guide me on how to turn off ac automatically after 7 pm? Also, how can I run the python script at a certain t…

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## [Email Node: Multiple Recipients in msg.to](https://discourse.nodered.org/t/email-node-multiple-recipients-in-msg-to/65336)

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**Author:** [@lesmar96](https://discourse.nodered.org/u/lesmar96)\
**Replies:** 2\
**Last updated:** [19 July 2022 21:41 UTC](https://discourse.nodered.org/t/email-node-multiple-recipients-in-msg-to/65336 "2022-07-19T21:41:32Z")

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Continuing the discussion from Multiple email recipients: I had posted in this thread awhile back. We used a format like this and it worked. Now, we are setting up a new system and it doesn't seem to work any more. W…

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## [Insert data into Gsheet in same row with new timestamp](https://discourse.nodered.org/t/insert-data-into-gsheet-in-same-row-with-new-timestamp/65275)

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**Author:** [@1onkar](https://discourse.nodered.org/u/1onkar)\
**Replies:** 3\
**Last updated:** [19 July 2022 15:31 UTC](https://discourse.nodered.org/t/insert-data-into-gsheet-in-same-row-with-new-timestamp/65275 "2022-07-19T15:31:53Z")

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Hi.. I need help to Insert data into Google sheet from Nodered. I followed this YouTube video Insert Data to Google Sheet Autoatic with Node Red \[บันทึกข้อมูลลง Google Sheet ด้วย Node Red\] - YouTube . It works , rather …

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## [Mqtt #-message split and write to database](https://discourse.nodered.org/t/mqtt-message-split-and-write-to-database/65130)

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**Author:** [@mssib28](https://discourse.nodered.org/u/mssib28)\
**Replies:** 3\
**Last updated:** [19 July 2022 20:35 UTC](https://discourse.nodered.org/t/mqtt-message-split-and-write-to-database/65130 "2022-07-19T20:35:29Z")

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Hi together, I would like to get data via MQTT to Node-Red. I use the Node 'mqtt in' with the topic 'Speicher/t\_day\_min/#'. Via debug node I get 15.7.2022, 10:36:04node: DB Speicher/t\_day\_min/Wert : msg.payload : st…

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## [Machine Learning via function node](https://discourse.nodered.org/t/machine-learning-via-function-node/65337)

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**Author:** [@guillad](https://discourse.nodered.org/u/guillad)\
**Replies:** 0\
**Last updated:** [19 July 2022 20:27 UTC](https://discourse.nodered.org/t/machine-learning-via-function-node/65337 "2022-07-19T20:27:05Z")

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Hi friends. I've implemented some of the \[most popular machine learning algorithms, on top of JS libraries like ml.js, brain.js and others from NPM. However, some of them are not properly configured and are currently no…

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## [How to convert a barcode to a pdf file](https://discourse.nodered.org/t/how-to-convert-a-barcode-to-a-pdf-file/65285)

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**Author:** [@SebastianCast04](https://discourse.nodered.org/u/SebastianCast04)\
**Replies:** 5\
**Last updated:** [19 July 2022 17:14 UTC](https://discourse.nodered.org/t/how-to-convert-a-barcode-to-a-pdf-file/65285 "2022-07-19T17:14:37Z")

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Hello, I hope everyone is ok, Could someone help me to convert a barcode to a pdf file, I've tried in various ways with no success, this is what I got so far

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## [Resize DPI screen dimension resolution to 1024x600 lightdm](https://discourse.nodered.org/t/resize-dpi-screen-dimension-resolution-to-1024x600-lightdm/65229)

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**Author:** [@denissanga](https://discourse.nodered.org/u/denissanga)\
**Replies:** 3\
**Last updated:** [19 July 2022 20:17 UTC](https://discourse.nodered.org/t/resize-dpi-screen-dimension-resolution-to-1024x600-lightdm/65229 "2022-07-19T20:17:48Z")

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Hi all I would like resize DPI screen dimension of firefox page to 1024x600 for dashboard I open the ui page using lightdm service many thanks in advance

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## [Getting alexa volume](https://discourse.nodered.org/t/getting-alexa-volume/18475)

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**Author:** [@ygarti](https://discourse.nodered.org/u/ygarti)\
**Replies:** 3\
**Last updated:** [19 July 2022 20:01 UTC](https://discourse.nodered.org/t/getting-alexa-volume/18475 "2022-07-19T20:01:01Z")

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Hi All, i would like to retrieve my echo volume but i didn't find any way to do that. if somebody know how to achieve this even with an outside script (which is not the preferred way) i'll be forever in your debt. Tha…

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