# Latest

**URL:** https://discourse.nodered.org/latest.md?no_subcategories=false&page=353

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

**Page:** 354

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## [HTTP request with specific request headers/payloads](https://discourse.nodered.org/t/http-request-with-specific-request-headers-payloads/77961)

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**Author:** [@EL\_tech](https://discourse.nodered.org/u/EL_tech)\
**Replies:** 2\
**Last updated:** [26 April 2023 18:43 UTC](https://discourse.nodered.org/t/http-request-with-specific-request-headers-payloads/77961 "2023-04-26T18:43:00Z")

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Hello, I would like to show the the current petrol prices to my dashboard. For the data reference I use this link. He explains how can I configure a http request. For Example: Url: https://carburanti.mise.gov.it/os…

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## [Node-Red Problem with BarChart Hover](https://discourse.nodered.org/t/node-red-problem-with-barchart-hover/77693)

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**Author:** [@ppennachi](https://discourse.nodered.org/u/ppennachi)\
**Replies:** 9\
**Last updated:** [26 April 2023 17:52 UTC](https://discourse.nodered.org/t/node-red-problem-with-barchart-hover/77693 "2023-04-26T17:52:15Z")

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Hi everyone! I'm working on a project where I need to get data from a database and plot this data into a Bar Chart. This chart needs to be clickable, so the user can select some info, and this info will trigger some oth…

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## [Cannot install node max31865 from repository](https://discourse.nodered.org/t/cannot-install-node-max31865-from-repository/77959)

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**Author:** [@devifast](https://discourse.nodered.org/u/devifast)\
**Replies:** 9\
**Last updated:** [26 April 2023 16:58 UTC](https://discourse.nodered.org/t/cannot-install-node-max31865-from-repository/77959 "2023-04-26T16:58:21Z")

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Hello. Unable to install node node-red-contrib-pi-max31865 0.9.4 from repository. Any ideas? With node version 19 everyting is ok, but now i have version 20. Here is the log file. Thanks. ----------------------------…

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## [Rs485 serialport plug in](https://discourse.nodered.org/t/rs485-serialport-plug-in/14388)

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**Author:** [@Iliyas](https://discourse.nodered.org/u/Iliyas)\
**Replies:** 19\
**Last updated:** [26 April 2023 15:51 UTC](https://discourse.nodered.org/t/rs485-serialport-plug-in/14388 "2023-04-26T15:51:59Z")

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Hello Myself Iliyas, I have been getting issue on installing rs485 serial port plugin please help as soon as possible

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## [Unable to connect to OPC UA Server](https://discourse.nodered.org/t/unable-to-connect-to-opc-ua-server/77955)

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**Author:** [@SinizowN](https://discourse.nodered.org/u/SinizowN)\
**Replies:** 1\
**Last updated:** [26 April 2023 15:49 UTC](https://discourse.nodered.org/t/unable-to-connect-to-opc-ua-server/77955 "2023-04-26T15:49:39Z")

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Hello everyone, I am trying to connect to an OPC UA server present on another server. I manage to connect to this server with software such as UAExpert or Matrikon. But when I try from node-red, unable to connect. I g…

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## [Debug main.js of node-red-dashboard in vscode: vendor folder in src is missing](https://discourse.nodered.org/t/debug-main-js-of-node-red-dashboard-in-vscode-vendor-folder-in-src-is-missing/77886)

<div class="topic-metadata">

**Author:** [@Mannheim68199](https://discourse.nodered.org/u/Mannheim68199)\
**Replies:** 3\
**Last updated:** [26 April 2023 15:21 UTC](https://discourse.nodered.org/t/debug-main-js-of-node-red-dashboard-in-vscode-vendor-folder-in-src-is-missing/77886 "2023-04-26T15:21:05Z")

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I am trying to enhance the dialog node in node-red-dashboard. Therefore I have changed locally the main.js file under node-red-dashboard/src. Now I want to debug the file in vscode. Therefore I installed -\> node-red …

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## [How to send notifications to local Synology Chat server via http/webhook](https://discourse.nodered.org/t/how-to-send-notifications-to-local-synology-chat-server-via-http-webhook/77917)

<div class="topic-metadata">

**Author:** [@kolia](https://discourse.nodered.org/u/kolia)\
**Replies:** 3\
**Last updated:** [26 April 2023 13:22 UTC](https://discourse.nodered.org/t/how-to-send-notifications-to-local-synology-chat-server-via-http-webhook/77917 "2023-04-26T13:22:59Z")

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I would like to send status notifications from Node Red to my local Synology chat server. Had already the http request from my Synology Chat, but I can't manage to send a message from a flow about it. What nodes do I ne…

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## [Caravan automation project suggestions](https://discourse.nodered.org/t/caravan-automation-project-suggestions/77781)

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**Author:** [@Surefire01](https://discourse.nodered.org/u/Surefire01)\
**Replies:** 26\
**Last updated:** [26 April 2023 13:16 UTC](https://discourse.nodered.org/t/caravan-automation-project-suggestions/77781 "2023-04-26T13:16:02Z")

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Chaps Not sure if this is the correct forum section as I haven't completed (or even begun) this project yet but am looking for suggestions and ideas as to how to proceed. I have a project in mind which involves automat…

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## [Get data from node-red-node-ui-table](https://discourse.nodered.org/t/get-data-from-node-red-node-ui-table/77690)

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**Author:** [@AutomationTeam-ATeam](https://discourse.nodered.org/u/AutomationTeam-ATeam)\
**Replies:** 1\
**Last updated:** [26 April 2023 12:48 UTC](https://discourse.nodered.org/t/get-data-from-node-red-node-ui-table/77690 "2023-04-26T12:48:48Z")

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Hi all For my project I would need to get the data present in a table of the ui-table node. Reading the tabulator documentation I found the getData command which seems to do just for me. Unfortunately at the moment I'…

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## [Setting HTTPS in Docker Compose](https://discourse.nodered.org/t/setting-https-in-docker-compose/77933)

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**Author:** [@oliver.es](https://discourse.nodered.org/u/oliver.es)\
**Replies:** 3\
**Last updated:** [26 April 2023 11:47 UTC](https://discourse.nodered.org/t/setting-https-in-docker-compose/77933 "2023-04-26T11:47:42Z")

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Hello, trying to run Node RED in Docker via Docker Compose yaml file. I need to load with HTTPS enabled and path to certificate files. This is example of Docker Compose file. node-red: image: nodered/node-red:lat…

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## [Node-red-contrib-mdashboard dropdown display and update issue](https://discourse.nodered.org/t/node-red-contrib-mdashboard-dropdown-display-and-update-issue/77901)

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**Author:** [@EchoSmith](https://discourse.nodered.org/u/EchoSmith)\
**Replies:** 3\
**Last updated:** [26 April 2023 11:21 UTC](https://discourse.nodered.org/t/node-red-contrib-mdashboard-dropdown-display-and-update-issue/77901 "2023-04-26T11:21:43Z")

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Hello, I seem to be having issues using the mdashboard. I am needing multi instance dashboard so this module is perfect for me, however when I use the mdashboard dropdown node, the array I send using msg.options does no…

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## [How to tell the difference between \\n in a string and a newline?](https://discourse.nodered.org/t/how-to-tell-the-difference-between-n-in-a-string-and-a-newline/77922)

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**Author:** [@SuperNinja](https://discourse.nodered.org/u/SuperNinja)\
**Replies:** 16\
**Last updated:** [26 April 2023 10:41 UTC](https://discourse.nodered.org/t/how-to-tell-the-difference-between-n-in-a-string-and-a-newline/77922 "2023-04-26T10:41:35Z")

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Hi, I have to separate a character string line by line (to process them individually afterwards): /\* \* My name \*/ #include \<asf.h\> #include "language.h" //defaut static const char lg\_clic1sec\_cancel\_fr\[\] = {"Clic 1sec…

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## [Click submit -\> prompt password field](https://discourse.nodered.org/t/click-submit-prompt-password-field/77911)

<div class="topic-metadata">

**Author:** [@Manuel\_o](https://discourse.nodered.org/u/Manuel_o)\
**Replies:** 1\
**Last updated:** [26 April 2023 08:07 UTC](https://discourse.nodered.org/t/click-submit-prompt-password-field/77911 "2023-04-26T08:07:57Z")

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hello. Can someone help me to implement a password prompt after clicking on submit? I try to integrate this security layer, that only a person who knows the code (for exmaple "1234" can submit a change. I have this so …

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## [How to show only one flows](https://discourse.nodered.org/t/how-to-show-only-one-flows/77944)

<div class="topic-metadata">

**Author:** [@1260215278](https://discourse.nodered.org/u/1260215278)\
**Replies:** 4\
**Last updated:** [26 April 2023 08:03 UTC](https://discourse.nodered.org/t/how-to-show-only-one-flows/77944 "2023-04-26T08:03:16Z")

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I run node-red in express, how to make it show only one flows on the ui. Thanks

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## [HPE\_CR\_EXPECTED How do I fix this?](https://discourse.nodered.org/t/hpe-cr-expected-how-do-i-fix-this/77530)

<div class="topic-metadata">

**Author:** [@Sellery](https://discourse.nodered.org/u/Sellery)\
**Replies:** 2\
**Last updated:** [26 April 2023 05:39 UTC](https://discourse.nodered.org/t/hpe-cr-expected-how-do-i-fix-this/77530 "2023-04-26T05:39:23Z")

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Hello, I'm a Newbie :sweat\_smile: (obv) So I want to get something from a website but everytime when I try I get this error 'HPE\_CR\_EXPECTED' What does it mean and how do I fix it? I added things like %0D || \\r || %AD t…

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## [Pass messages to UI template using Jquery](https://discourse.nodered.org/t/pass-messages-to-ui-template-using-jquery/77938)

<div class="topic-metadata">

**Author:** [@Mick](https://discourse.nodered.org/u/Mick)\
**Replies:** 0\
**Last updated:** [26 April 2023 01:54 UTC](https://discourse.nodered.org/t/pass-messages-to-ui-template-using-jquery/77938 "2023-04-26T01:54:33Z")

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I am using a UI Template node to to a scope watch to update changes for display. I am currently using this code: \<script\> (function(scope) { //hide this card. NOTE: 4b689f7473831a84 is the Node id as …

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## [How update Node-Red nodes?](https://discourse.nodered.org/t/how-update-node-red-nodes/77932)

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**Author:** [@iiot2k](https://discourse.nodered.org/u/iiot2k)\
**Replies:** 1\
**Last updated:** [25 April 2023 21:23 UTC](https://discourse.nodered.org/t/how-update-node-red-nodes/77932 "2023-04-25T21:23:27Z")

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A simple question. When I update nodes in Node-Red (e.g. Palette manager), are the new files merged with old files or old files are deleted first and then new files are copied ? What action is made, if the old file is…

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## [How to use other node instances / objects across nodes](https://discourse.nodered.org/t/how-to-use-other-node-instances-objects-across-nodes/77486)

<div class="topic-metadata">

**Author:** [@znetsixe](https://discourse.nodered.org/u/znetsixe)\
**Replies:** 13\
**Last updated:** [25 April 2023 17:10 UTC](https://discourse.nodered.org/t/how-to-use-other-node-instances-objects-across-nodes/77486 "2023-04-25T17:10:54Z")

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Hey hey, Rewriting my post to put it simpler: What is the best way between nodes to have a forward backward communication when they are both internally instantiated as objects? I have written a flow variable and am pu…

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## [Help on adapting module to receive from any IR remote](https://discourse.nodered.org/t/help-on-adapting-module-to-receive-from-any-ir-remote/77836)

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**Author:** [@GiovanniG](https://discourse.nodered.org/u/GiovanniG)\
**Replies:** 5\
**Last updated:** [25 April 2023 16:57 UTC](https://discourse.nodered.org/t/help-on-adapting-module-to-receive-from-any-ir-remote/77836 "2023-04-25T16:57:38Z")

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Hi, I was able to activate and receive on NR the remote commands on my Orange zero, to do that I'm using node-red-contrib-ir which unfortunately filter the data packet and returns me always "4", I need to edit the scrip…

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## [How to set the reading speed of the CSV or File Read node?](https://discourse.nodered.org/t/how-to-set-the-reading-speed-of-the-csv-or-file-read-node/77897)

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**Author:** [@hkayan](https://discourse.nodered.org/u/hkayan)\
**Replies:** 6\
**Last updated:** [25 April 2023 15:25 UTC](https://discourse.nodered.org/t/how-to-set-the-reading-speed-of-the-csv-or-file-read-node/77897 "2023-04-25T15:25:33Z")

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I am trying to simulate an experiment. The setup I have is like below: The issue is that file read node works too fast for me. I need to set up this in a way that data are forwarded to a database at 20Hz. That funct…

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## [modbusRTU over RS485: Port Not Option](https://discourse.nodered.org/t/modbusrtu-over-rs485-port-not-option/77204)

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**Author:** [@hobbes1069](https://discourse.nodered.org/u/hobbes1069)\
**Replies:** 7\
**Last updated:** [18 April 2023 23:24 UTC](https://discourse.nodered.org/t/modbusrtu-over-rs485-port-not-option/77204 "2023-04-18T23:24:24Z")

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This seems to be a re-occurring problem with these nodes and reading through several of the topics (including my previous one). This time I'm trying to connect to a serial device. It was working on a Tulip Edge IO devic…

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## [Flows for an Open AI compatible API](https://discourse.nodered.org/t/flows-for-an-open-ai-compatible-api/77921)

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**Author:** [@rozek](https://discourse.nodered.org/u/rozek)\
**Replies:** 0\
**Last updated:** [25 April 2023 13:54 UTC](https://discourse.nodered.org/t/flows-for-an-open-ai-compatible-api/77921 "2023-04-25T13:54:34Z")

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As promised before, I have just completed (and verified) a flow which implements an API that is compatible with that of Open AI - see the related GitHub repository. Possible use cases could be: log any requests to the…

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## [Send push notification in local network to iphone](https://discourse.nodered.org/t/send-push-notification-in-local-network-to-iphone/77843)

<div class="topic-metadata">

**Author:** [@kolia](https://discourse.nodered.org/u/kolia)\
**Replies:** 4\
**Last updated:** [25 April 2023 13:36 UTC](https://discourse.nodered.org/t/send-push-notification-in-local-network-to-iphone/77843 "2023-04-25T13:36:21Z")

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hi, I would like to set up monitoring of my internet connection. If this fails, a push notifycation should go immediately to my iPhone. The whole thing has to work in the local network, when my iPhone is connected here …

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## [Dosing my pump for a specific time and wait a specific time and dose again (loop)](https://discourse.nodered.org/t/dosing-my-pump-for-a-specific-time-and-wait-a-specific-time-and-dose-again-loop/77059)

<div class="topic-metadata">

**Author:** [@Manuel\_o](https://discourse.nodered.org/u/Manuel_o)\
**Replies:** 12\
**Last updated:** [25 April 2023 12:42 UTC](https://discourse.nodered.org/t/dosing-my-pump-for-a-specific-time-and-wait-a-specific-time-and-dose-again-loop/77059 "2023-04-25T12:42:59Z")

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Hello friends. I try to create a routine where my pump will dose for a given time, then wait and start dosing again. For this i created 3 fields. One field where i can ENABLE or DISABLE this routine and 3 input fields …

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## [Duplicate entries from an array](https://discourse.nodered.org/t/duplicate-entries-from-an-array/77891)

<div class="topic-metadata">

**Author:** [@madmax](https://discourse.nodered.org/u/madmax)\
**Replies:** 7\
**Last updated:** [25 April 2023 11:43 UTC](https://discourse.nodered.org/t/duplicate-entries-from-an-array/77891 "2023-04-25T11:43:56Z")

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Hello! Is there a way to delete duplicate entries from an array? I hope someone can help me.

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## [Node-RED access ROCK GPIO?](https://discourse.nodered.org/t/node-red-access-rock-gpio/77912)

<div class="topic-metadata">

**Author:** [@awneil](https://discourse.nodered.org/u/awneil)\
**Replies:** 1\
**Last updated:** [25 April 2023 11:52 UTC](https://discourse.nodered.org/t/node-red-access-rock-gpio/77912 "2023-04-25T11:52:50Z")

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Having established that the Raspberry Pi GPIO nodes won't work: What would be the suggested/recommended way to access the GPIOs on a ROCK 4C+ (or similar)? It looks like there is a pyRock to provide similar features …

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## [Email Node and OAuth with M365](https://discourse.nodered.org/t/email-node-and-oauth-with-m365/77903)

<div class="topic-metadata">

**Author:** [@ebnerjoh](https://discourse.nodered.org/u/ebnerjoh)\
**Replies:** 1\
**Last updated:** [25 April 2023 10:19 UTC](https://discourse.nodered.org/t/email-node-and-oauth-with-m365/77903 "2023-04-25T10:19:10Z")

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Hello, I want to check emails with the Email Node on a M365 Mailbox. the Email Node should support it, but I was not able to find a "Starter" Document on how the OAuth flow could be done. Br, JOhannes

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## [EspEasy Data filter](https://discourse.nodered.org/t/espeasy-data-filter/77910)

<div class="topic-metadata">

**Author:** [@spike318](https://discourse.nodered.org/u/spike318)\
**Replies:** 8\
**Last updated:** [25 April 2023 09:56 UTC](https://discourse.nodered.org/t/espeasy-data-filter/77910 "2023-04-25T09:56:30Z")

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I use MQTT from domoticz afther this i put a filter on it to select the IDX fot the right data When i debug it i got something like this. { idx: 350, RSSI: 7, nvalue: 0, svalue: "237.90;0.00;0.00;0.00" } But now i one…

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## [USB-Webcam on dashboard](https://discourse.nodered.org/t/usb-webcam-on-dashboard/77858)

<div class="topic-metadata">

**Author:** [@Manuel\_o](https://discourse.nodered.org/u/Manuel_o)\
**Replies:** 22\
**Last updated:** [25 April 2023 09:32 UTC](https://discourse.nodered.org/t/usb-webcam-on-dashboard/77858 "2023-04-25T09:32:31Z")

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Hello. I try to use my USB Webcam (TRUST-vero) on my laptop via node-red My Node-red instance is running on my VM-linux server. I tried to include a live stream to my dashboard. I dont need to capture or save anythin…

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## [Accidentally DDOSing our network gateway with Node-Red](https://discourse.nodered.org/t/accidentally-ddosing-our-network-gateway-with-node-red/77888)

<div class="topic-metadata">

**Author:** [@Darren](https://discourse.nodered.org/u/Darren)\
**Replies:** 8\
**Last updated:** [25 April 2023 09:30 UTC](https://discourse.nodered.org/t/accidentally-ddosing-our-network-gateway-with-node-red/77888 "2023-04-25T09:30:10Z")

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Whether as a warning for the next guy, or a good laugh, here's a small adventure I had today: I was running a localhosted version of node-red using Yarn, with some generic flows previously deployed to clients. I was als…

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