# Latest

**URL:** https://discourse.nodered.org/latest.md?page=304

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

**Page:** 305

---

## [How to send email with Mailgun in node-red](https://discourse.nodered.org/t/how-to-send-email-with-mailgun-in-node-red/7875)

<div class="topic-metadata">

**Author:** [@cowchimp](https://discourse.nodered.org/u/cowchimp)\
**Replies:** 2\
**Last updated:** [6 September 2023 12:29 UTC](https://discourse.nodered.org/t/how-to-send-email-with-mailgun-in-node-red/7875 "2023-09-06T12:29:26Z")

</div>

Hi. I want to use Mailgun in order to send mail from node-red, but I can't figure out how to get this done. Anyone already accomplish this by any chance? Thanks.

---

## [Why join node is not responding. Is it some kind of BUG?](https://discourse.nodered.org/t/why-join-node-is-not-responding-is-it-some-kind-of-bug/81047)

<div class="topic-metadata">

**Author:** [@shubhamnodered](https://discourse.nodered.org/u/shubhamnodered)\
**Replies:** 8\
**Last updated:** [6 September 2023 12:07 UTC](https://discourse.nodered.org/t/why-join-node-is-not-responding-is-it-some-kind-of-bug/81047 "2023-09-06T12:07:21Z")

</div>

I am using "join node" in my flow but its not working today.

---

## [MQTT Large Buffering on Raspberry Pi 4](https://discourse.nodered.org/t/mqtt-large-buffering-on-raspberry-pi-4/81049)

<div class="topic-metadata">

**Author:** [@FeliceM](https://discourse.nodered.org/u/FeliceM)\
**Replies:** 6\
**Last updated:** [6 September 2023 05:52 UTC](https://discourse.nodered.org/t/mqtt-large-buffering-on-raspberry-pi-4/81049 "2023-09-06T05:52:25Z")

</div>

We are in search of a skilled developer to create a Node-RED flow that buffers MQTT messages on a Raspberry Pi 4 when the MQTT-OUT node loses its internet connection. Project Context: The flow sends out MQTT messages …

---

## [How to add a radio button in node red](https://discourse.nodered.org/t/how-to-add-a-radio-button-in-node-red/80601)

<div class="topic-metadata">

**Author:** [@Marius1](https://discourse.nodered.org/u/Marius1)\
**Replies:** 19\
**Last updated:** [6 September 2023 05:22 UTC](https://discourse.nodered.org/t/how-to-add-a-radio-button-in-node-red/80601 "2023-09-06T05:22:58Z")

</div>

Hi everyone. I would like to add a radio button or something similar to my Node-RED Dashboard UI. Something where you have multiple options to choose from but can only select 1 at a time. Something like this: Tha…

---

## [How to read req.query from /ui created by dashboard nodes](https://discourse.nodered.org/t/how-to-read-req-query-from-ui-created-by-dashboard-nodes/81044)

<div class="topic-metadata">

**Author:** [@Ralac07](https://discourse.nodered.org/u/Ralac07)\
**Replies:** 3\
**Last updated:** [5 September 2023 21:29 UTC](https://discourse.nodered.org/t/how-to-read-req-query-from-ui-created-by-dashboard-nodes/81044 "2023-09-05T21:29:26Z")

</div>

I have created a separate login system using a HTTP endpoint and it adds it to the end of /ui how do i access this data with nodes http://localhost:1880/ui/?username=user&password=123#!/0?socketid=KZgw8S79tHwK-JUTAABH …

---

## [Fatal\_Error\_Allocation](https://discourse.nodered.org/t/fatal-error-allocation/81063)

<div class="topic-metadata">

**Author:** [@Davi](https://discourse.nodered.org/u/Davi)\
**Replies:** 1\
**Last updated:** [5 September 2023 21:03 UTC](https://discourse.nodered.org/t/fatal-error-allocation/81063 "2023-09-05T21:03:26Z")

</div>

Every 3 days this error happens

---

## [EAI\_AGAIN, expected, but can a workaround be suggested?](https://discourse.nodered.org/t/eai-again-expected-but-can-a-workaround-be-suggested/81014)

<div class="topic-metadata">

**Author:** [@pconroy328](https://discourse.nodered.org/u/pconroy328)\
**Replies:** 14\
**Last updated:** [5 September 2023 19:33 UTC](https://discourse.nodered.org/t/eai-again-expected-but-can-a-workaround-be-suggested/81014 "2023-09-05T19:33:21Z")

</div>

I'm very, very new to Node-RED. I have some simple flows that call the USA's NOAA website. They work fine. But my Raspberry Pi has the ability to switch it's internet connection from a Wifi Access point, to a phone ho…

---

## [UI table formatter If Else creates broken sort](https://discourse.nodered.org/t/ui-table-formatter-if-else-creates-broken-sort/81061)

<div class="topic-metadata">

**Author:** [@JohnnyPicnic](https://discourse.nodered.org/u/JohnnyPicnic)\
**Replies:** 1\
**Last updated:** [5 September 2023 19:21 UTC](https://discourse.nodered.org/t/ui-table-formatter-if-else-creates-broken-sort/81061 "2023-09-05T19:21:24Z")

</div>

Hello, if I use the following If Else statement in my msg.ui\_control I get the expected result but the table is broken and doesn't display all the rows and is only able to sort in one direction. The other direction creat…

---

## [Running a flow is blocking access to nodered.org website on my PC](https://discourse.nodered.org/t/running-a-flow-is-blocking-access-to-nodered-org-website-on-my-pc/81056)

<div class="topic-metadata">

**Author:** [@ojek](https://discourse.nodered.org/u/ojek)\
**Replies:** 5\
**Last updated:** [5 September 2023 15:10 UTC](https://discourse.nodered.org/t/running-a-flow-is-blocking-access-to-nodered-org-website-on-my-pc/81056 "2023-09-05T15:10:29Z")

</div>

I have created a splitter node that can split json array into multiple separate messages. I wanted to do load testing so I created an array with several thousands elements, then began spllitting them and running subflows…

---

## [Strategy for managing lots of functions and js code](https://discourse.nodered.org/t/strategy-for-managing-lots-of-functions-and-js-code/81042)

<div class="topic-metadata">

**Author:** [@jpravetz](https://discourse.nodered.org/u/jpravetz)\
**Replies:** 4\
**Last updated:** [5 September 2023 14:28 UTC](https://discourse.nodered.org/t/strategy-for-managing-lots-of-functions-and-js-code/81042 "2023-09-05T14:28:29Z")

</div>

As my Home Assistant Node-RED project is becoming bigger, I am looking for better ways to manage my flows and, in particular, the javascript from my function nodes. I'm impressed that Node-REDs javascript enables classes…

---

## [How to customize the node red editor](https://discourse.nodered.org/t/how-to-customize-the-node-red-editor/80710)

<div class="topic-metadata">

**Author:** [@Pioneerj](https://discourse.nodered.org/u/Pioneerj)\
**Replies:** 23\
**Last updated:** [5 September 2023 09:02 UTC](https://discourse.nodered.org/t/how-to-customize-the-node-red-editor/80710 "2023-09-05T09:02:32Z")

</div>

Hello All, I want to have some custom things on node-red dashboard. For example: Some text boxes, buttons etc. along with drag-drop of Nodes which existing dashboard is supporting. Can you please help on this. Thank…

---

## [Start flow on pageload](https://discourse.nodered.org/t/start-flow-on-pageload/80791)

<div class="topic-metadata">

**Author:** [@Slyke](https://discourse.nodered.org/u/Slyke)\
**Replies:** 4\
**Last updated:** [5 September 2023 08:02 UTC](https://discourse.nodered.org/t/start-flow-on-pageload/80791 "2023-09-05T08:02:26Z")

</div>

Wondering if it's possible to start a flow when the UI dashboard is loaded on a browser? I want to call an API when the dashboard loads up, so that it can grab the latest status of something, and then display the result…

---

## [uDMX node issue](https://discourse.nodered.org/t/udmx-node-issue/80448)

<div class="topic-metadata">

**Author:** [@Erbachm](https://discourse.nodered.org/u/Erbachm)\
**Replies:** 3\
**Last updated:** [5 September 2023 07:58 UTC](https://discourse.nodered.org/t/udmx-node-issue/80448 "2023-09-05T07:58:47Z")

</div>

Hi. I'm having some issues with the uDMX node. Every now and again it will stop working with the following error. 10 Aug 08:38:13 - \[error\] \[udmx:98fdcba301d48ecc\] TypeError: Cannot read properties of undefined (reading…

---

## [Modbus sensors positing data at same address](https://discourse.nodered.org/t/modbus-sensors-positing-data-at-same-address/81033)

<div class="topic-metadata">

**Author:** [@paca](https://discourse.nodered.org/u/paca)\
**Replies:** 5\
**Last updated:** [5 September 2023 03:31 UTC](https://discourse.nodered.org/t/modbus-sensors-positing-data-at-same-address/81033 "2023-09-05T03:31:20Z")

</div>

Hi. I have a few Modbus RTU RS485 SHT20 Temperature Humidity Transmitter Sensors. https://www.aliexpress.com/item/32966097805.html?spm=a2g0o.order\_detail.order\_detail\_item.4.4d7af19cw7ZS6K All of them are posting data …

---

## [Node-red-contrib-chatbot](https://discourse.nodered.org/t/node-red-contrib-chatbot/81010)

<div class="topic-metadata">

**Author:** [@MaxTryhub](https://discourse.nodered.org/u/MaxTryhub)\
**Replies:** 1\
**Last updated:** [5 September 2023 01:01 UTC](https://discourse.nodered.org/t/node-red-contrib-chatbot/81010 "2023-09-05T01:01:44Z")

</div>

I’m just starting to study node-red, I didn’t find in the documentation why the message is not sent, I connected node-red-contrib-chatbot, and I want to send a message (let payload = { chatId: \*\*\*\*\*\*, type: "message", …

---

## [Run WebAssembly in NodeRED (Wasmer)](https://discourse.nodered.org/t/run-webassembly-in-nodered-wasmer/80986)

<div class="topic-metadata">

**Author:** [@jackcarey](https://discourse.nodered.org/u/jackcarey)\
**Replies:** 4\
**Last updated:** [4 September 2023 22:23 UTC](https://discourse.nodered.org/t/run-webassembly-in-nodered-wasmer/80986 "2023-09-04T22:23:39Z")

</div>

Hello, I have started integrating wasmer-js into a node so that WebAssembly modules can be run by providing a URL and a few other details. The motivation behind this is to easily allow custom functionality to be written …

---

## [Multiple instances with one node\_modules](https://discourse.nodered.org/t/multiple-instances-with-one-node-modules/81040)

<div class="topic-metadata">

**Author:** [@Manuel\_o](https://discourse.nodered.org/u/Manuel_o)\
**Replies:** 3\
**Last updated:** [4 September 2023 20:55 UTC](https://discourse.nodered.org/t/multiple-instances-with-one-node-modules/81040 "2023-09-04T20:55:38Z")

</div>

Hello friends, I am experimenting with different node-red instances. I know that the topic is discussed muiltple times here and i read a lot about it. I hope my questions are not to dumb. I try to aks a couple of unders…

---

## [Refactoring a node with only one file to multiple files](https://discourse.nodered.org/t/refactoring-a-node-with-only-one-file-to-multiple-files/80227)

<div class="topic-metadata">

**Author:** [@novski](https://discourse.nodered.org/u/novski)\
**Replies:** 13\
**Last updated:** [4 September 2023 20:22 UTC](https://discourse.nodered.org/t/refactoring-a-node-with-only-one-file-to-multiple-files/80227 "2023-09-04T20:22:26Z")

</div>

I found a bug in a node and tried to find the code. But the file was 2600 lines big, and I had a hard time finding the passage. Then I thought I could create a PR refactored to multiple files and started to work it out…

---

## [Node S7 Import Modules](https://discourse.nodered.org/t/node-s7-import-modules/81039)

<div class="topic-metadata">

**Author:** [@Mohamed\_1711](https://discourse.nodered.org/u/Mohamed_1711)\
**Replies:** 3\
**Last updated:** [4 September 2023 19:49 UTC](https://discourse.nodered.org/t/node-s7-import-modules/81039 "2023-09-04T19:49:46Z")

</div>

I want to know the location of nodes7 ... and what is nodes7 This function is read from PLC What is this imported modules

---

## [Abrupt termination after some time running - \[error\] Error: Connection terminated unexpectedly](https://discourse.nodered.org/t/abrupt-termination-after-some-time-running-error-error-connection-terminated-unexpectedly/80973)

<div class="topic-metadata">

**Author:** [@ItsVitor](https://discourse.nodered.org/u/ItsVitor)\
**Replies:** 5\
**Last updated:** [4 September 2023 14:59 UTC](https://discourse.nodered.org/t/abrupt-termination-after-some-time-running-error-error-connection-terminated-unexpectedly/80973 "2023-09-04T14:59:12Z")

</div>

Hello. I'm using Node-RED with Docker, trying to run this flow below: It's a simple flow: get some data from this postgres db, do something, then insert the data into this other postgres db. For the db interactions, …

---

## [Visualizing data from Excel sheet with Filter in NodeRed](https://discourse.nodered.org/t/visualizing-data-from-excel-sheet-with-filter-in-nodered/81026)

<div class="topic-metadata">

**Author:** [@Trma\_chaser](https://discourse.nodered.org/u/Trma_chaser)\
**Replies:** 4\
**Last updated:** [4 September 2023 12:57 UTC](https://discourse.nodered.org/t/visualizing-data-from-excel-sheet-with-filter-in-nodered/81026 "2023-09-04T12:57:39Z")

</div>

Hi iam looking for a way to exctract/visualize data from a excel sheet or CSV Aim: We have a booking system that wir export a CSV/Excel file very 30min. with new or change bookings. I want to display the current book…

---

## [Dashboard issue - bug? URL path case sensitivity](https://discourse.nodered.org/t/dashboard-issue-bug-url-path-case-sensitivity/81034)

<div class="topic-metadata">

**Author:** [@TotallyInformation](https://discourse.nodered.org/u/TotallyInformation)\
**Replies:** 0\
**Last updated:** [4 September 2023 10:22 UTC](https://discourse.nodered.org/t/dashboard-issue-bug-url-path-case-sensitivity/81034 "2023-09-04T10:22:14Z")

</div>

Hi all, as raised against uibuilder initially by @annuello (many thanks), there is an issue where, while Node-RED's ExpressJS servers default to being case-insensitive, Socket.IO does not seem to like that at all. In Da…

---

## [BUG: Date picker format does not match Dashboard -\> Site -\> Date format](https://discourse.nodered.org/t/bug-date-picker-format-does-not-match-dashboard-site-date-format/12409)

<div class="topic-metadata">

**Author:** [@zenofmud](https://discourse.nodered.org/u/zenofmud)\
**Replies:** 7\
**Last updated:** [4 September 2023 09:43 UTC](https://discourse.nodered.org/t/bug-date-picker-format-does-not-match-dashboard-site-date-format/12409 "2023-09-04T09:43:45Z")

</div>

Node-RED version: v0.20.5 Node.js version: v10.15.3 Dashboard version 2.15.4 The ui\_date\_picker node says The date display can be formatted in the Dashboard - Site tab using moment.js formatting. For example MM/DD…

---

## [TCP Request: how to change address and close connection?](https://discourse.nodered.org/t/tcp-request-how-to-change-address-and-close-connection/81029)

<div class="topic-metadata">

**Author:** [@protonmw](https://discourse.nodered.org/u/protonmw)\
**Replies:** 0\
**Last updated:** [4 September 2023 09:21 UTC](https://discourse.nodered.org/t/tcp-request-how-to-change-address-and-close-connection/81029 "2023-09-04T09:21:16Z")

</div>

Hi experts! Nodered is running on a raspberry pi (up-to-date) in a working environment with 2 identical SCPI measurement devices on different IP address. I need to communicate with one of them (user chooses wich one) bu…

---

## [Automatic Data Display in Node-RED Dropdown Node](https://discourse.nodered.org/t/automatic-data-display-in-node-red-dropdown-node/81024)

<div class="topic-metadata">

**Author:** [@halukmy](https://discourse.nodered.org/u/halukmy)\
**Replies:** 11\
**Last updated:** [4 September 2023 08:49 UTC](https://discourse.nodered.org/t/automatic-data-display-in-node-red-dropdown-node/81024 "2023-09-04T08:49:57Z")

</div>

In my Node-RED project, I'm using a dropdown node, and I want to bind the content of this dropdown to MQTT incoming values. Additionally, I want the dropdown content to be automatically updated when the page is load…

---

## [Sharing data (json) between Node-red Editor (Nodes) and custom editor theme comonents](https://discourse.nodered.org/t/sharing-data-json-between-node-red-editor-nodes-and-custom-editor-theme-comonents/81028)

<div class="topic-metadata">

**Author:** [@Pioneerj](https://discourse.nodered.org/u/Pioneerj)\
**Replies:** 3\
**Last updated:** [4 September 2023 08:47 UTC](https://discourse.nodered.org/t/sharing-data-json-between-node-red-editor-nodes-and-custom-editor-theme-comonents/81028 "2023-09-04T08:47:29Z")

</div>

Hello All, I am experimenting custom theme for Node-Red editor. I am also referring: I have one query: How to send/share node data (like json data) to my custom theme component and vice-versa. Thanks in advance.

---

## [Flexdash uninstall](https://discourse.nodered.org/t/flexdash-uninstall/80994)

<div class="topic-metadata">

**Author:** [@novski](https://discourse.nodered.org/u/novski)\
**Replies:** 17\
**Last updated:** [4 September 2023 08:02 UTC](https://discourse.nodered.org/t/flexdash-uninstall/80994 "2023-09-04T08:02:38Z")

</div>

I wanted to uninstall flexdash, but it seems as it is still listed. I did many things to get rid spread of it over several days, so I am unable to determine what all I did anymore, but it was somewhat the same as @smanj…

---

## [Best practices to store data persistently?](https://discourse.nodered.org/t/best-practices-to-store-data-persistently/80850)

<div class="topic-metadata">

**Author:** [@FezVrasta](https://discourse.nodered.org/u/FezVrasta)\
**Replies:** 15\
**Last updated:** [3 September 2023 22:47 UTC](https://discourse.nodered.org/t/best-practices-to-store-data-persistently/80850 "2023-09-03T22:47:02Z")

</div>

Hi, I was wondering what are the best practices to allow a config node to store some data persistently so that it's preserved across restarts? I thought I could use node.context() with the filesystem persistence but it …

---

## [Uibuilder: Another new video - Introduction to uib-brand.css](https://discourse.nodered.org/t/uibuilder-another-new-video-introduction-to-uib-brand-css/81012)

<div class="topic-metadata">

**Author:** [@TotallyInformation](https://discourse.nodered.org/u/TotallyInformation)\
**Replies:** 0\
**Last updated:** [3 September 2023 20:16 UTC](https://discourse.nodered.org/t/uibuilder-another-new-video-introduction-to-uib-brand-css/81012 "2023-09-03T20:16:32Z")

</div>

Well, a bit of a surprise even to me but I managed to squeeze in a 2nd video release today! This one introduces the main features of the uib-brand.css style sheet that is included in uibuilder. It also shows how to swit…

---

## [Uibuilder: New video available - The uib-tag node](https://discourse.nodered.org/t/uibuilder-new-video-available-the-uib-tag-node/81006)

<div class="topic-metadata">

**Author:** [@TotallyInformation](https://discourse.nodered.org/u/TotallyInformation)\
**Replies:** 1\
**Last updated:** [3 September 2023 14:57 UTC](https://discourse.nodered.org/t/uibuilder-new-video-available-the-uib-tag-node/81006 "2023-09-03T14:57:51Z")

</div>

Hi all, at long last there is a new uibuilder video available on my YouTube channel. This is the 4th video and it is all about the uib-tag node that was added in the last release a couple of weeks ago. The…

[Previous page](https://discourse.nodered.org/latest.md?page=303)

[Next page](https://discourse.nodered.org/latest.md?page=305)