# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=107

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

**Page:** 108

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## [Send multi topic mqtt](https://discourse.nodered.org/t/send-multi-topic-mqtt/88257)

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**Author:** [@wiwan-wijoyo](https://discourse.nodered.org/u/wiwan-wijoyo)\
**Replies:** 2\
**Last updated:** [25 May 2024 12:11 UTC](https://discourse.nodered.org/t/send-multi-topic-mqtt/88257 "2024-05-25T12:11:06Z")

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Hi, how to make mqtt topic submission simpler if preset 1 is on then preset 2,3,4 is off if preset 2 is on then preset 1,3,4 is off etc. image send preset 1 image send preset 2 thanks \[{"id":"acf6a62ed64e2b…

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## [Delay time node red](https://discourse.nodered.org/t/delay-time-node-red/88159)

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**Author:** [@ThaiMinh120](https://discourse.nodered.org/u/ThaiMinh120)\
**Replies:** 39\
**Last updated:** [25 May 2024 11:29 UTC](https://discourse.nodered.org/t/delay-time-node-red/88159 "2024-05-25T11:29:35Z")

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Help me make a delay function node red for this picture. Tks.

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## [Difference between vfc (Visual flow creator and node red)](https://discourse.nodered.org/t/difference-between-vfc-visual-flow-creator-and-node-red/88243)

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**Author:** [@Tharun](https://discourse.nodered.org/u/Tharun)\
**Replies:** 8\
**Last updated:** [25 May 2024 09:15 UTC](https://discourse.nodered.org/t/difference-between-vfc-visual-flow-creator-and-node-red/88243 "2024-05-25T09:15:26Z")

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I have a payload to get data through REST API, in which I need to get data. In Visual Flow Creator I got the output properly without any error but in node-red while doing the same flow I'm getting a forbidden error. Re…

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## [Have issue running node-red](https://discourse.nodered.org/t/have-issue-running-node-red/88247)

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**Author:** [@sudhand](https://discourse.nodered.org/u/sudhand)\
**Replies:** 2\
**Last updated:** [24 May 2024 20:13 UTC](https://discourse.nodered.org/t/have-issue-running-node-red/88247 "2024-05-24T20:13:47Z")

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24 May 14:06:46 - \[info\] Node-RED version: v0.20.3 24 May 14:06:46 - \[info\] Node.js version: v22.0.0 24 May 14:06:46 - \[info\] Windows\_NT 10.0.17763 x64 LE (node:4892) \[DEP0059\] DeprecationWarning: The \`util.log API i…

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## [Need a help here in ECONNREFUSED error](https://discourse.nodered.org/t/need-a-help-here-in-econnrefused-error/88231)

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**Author:** [@Arunkmsd](https://discourse.nodered.org/u/Arunkmsd)\
**Replies:** 1\
**Last updated:** [24 May 2024 18:09 UTC](https://discourse.nodered.org/t/need-a-help-here-in-econnrefused-error/88231 "2024-05-24T18:09:06Z")

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Hello, I got error for this server pc-h13a-15-1 that it is "ECONNREFUSED" refused but in same flow, there were others two servers , which is working fine. They are pc-13a-13-1 and pc-13a-11-1. Can someone help me here…

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## [Node names keep disappearing when edit dialog is closed?](https://discourse.nodered.org/t/node-names-keep-disappearing-when-edit-dialog-is-closed/88241)

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**Author:** [@malee](https://discourse.nodered.org/u/malee)\
**Replies:** 2\
**Last updated:** [24 May 2024 17:02 UTC](https://discourse.nodered.org/t/node-names-keep-disappearing-when-edit-dialog-is-closed/88241 "2024-05-24T17:02:42Z")

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I seem to have encountered a strange issue with a node-RED node I have been working on. It seems to be an intermittent error. But I am wondering if it is something that has been picked up on before. I have been working o…

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## [How to set a flow.context to a default value if the variable turns out to be undefined](https://discourse.nodered.org/t/how-to-set-a-flow-context-to-a-default-value-if-the-variable-turns-out-to-be-undefined/88234)

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**Author:** [@smanjunath211](https://discourse.nodered.org/u/smanjunath211)\
**Replies:** 2\
**Last updated:** [24 May 2024 13:41 UTC](https://discourse.nodered.org/t/how-to-set-a-flow-context-to-a-default-value-if-the-variable-turns-out-to-be-undefined/88234 "2024-05-24T13:41:01Z")

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In a function node, how to set a flow.context to a default value, (say 0), if the variable it is expecting turns out to be undefined ? I have this in a function node, however sometimes, the msg.payload value turns out…

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## [Serial modus Communication error Temperature sensor with RS485](https://discourse.nodered.org/t/serial-modus-communication-error-temperature-sensor-with-rs485/88182)

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**Author:** [@Ajinkya09](https://discourse.nodered.org/u/Ajinkya09)\
**Replies:** 1\
**Last updated:** [24 May 2024 10:56 UTC](https://discourse.nodered.org/t/serial-modus-communication-error-temperature-sensor-with-rs485/88182 "2024-05-24T10:56:14Z")

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I'm trying to read the temperature sensor (Pt1000) value from Node-RED. Connection: The Pt1000 sensor is connected to a digital converter, which converts the readings into digital values. The converter is connected to t…

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## [Pushover message only send after 21:00u](https://discourse.nodered.org/t/pushover-message-only-send-after-21-00u/88101)

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**Author:** [@maru](https://discourse.nodered.org/u/maru)\
**Replies:** 7\
**Last updated:** [24 May 2024 10:38 UTC](https://discourse.nodered.org/t/pushover-message-only-send-after-21-00u/88101 "2024-05-24T10:38:39Z")

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Hi, I have a few LoRaWan nodes that sends a pushover message to my phone when a door is opened. That's workinfg fine with an flow (example) as below: How can I change the flow, that it will only trigger pushover to…

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## [I added a listener for the deployment event nodes:deploy, but it did not trigger](https://discourse.nodered.org/t/i-added-a-listener-for-the-deployment-event-nodes-deploy-but-it-did-not-trigger/88216)

<div class="topic-metadata">

**Author:** [@lyliang1216](https://discourse.nodered.org/u/lyliang1216)\
**Replies:** 16\
**Last updated:** [24 May 2024 10:11 UTC](https://discourse.nodered.org/t/i-added-a-listener-for-the-deployment-event-nodes-deploy-but-it-did-not-trigger/88216 "2024-05-24T10:11:28Z")

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I added a listener for the deployment event nodes:deploy, but it did not trigger. Other events, such as flows:started, can be triggered. There are also the following input events that can be triggered. hope to get help. …

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## [Loop node not exiting on break](https://discourse.nodered.org/t/loop-node-not-exiting-on-break/88212)

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**Author:** [@pspeirs](https://discourse.nodered.org/u/pspeirs)\
**Replies:** 2\
**Last updated:** [24 May 2024 09:24 UTC](https://discourse.nodered.org/t/loop-node-not-exiting-on-break/88212 "2024-05-24T09:24:58Z")

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Hi All, I'm trying to use the loop node and define an exit via the msg.command = break. Injecting the command does appear to register and I can capture a message indicating that the break has been processed however the…

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## [Setting Websocket Headers dynamically](https://discourse.nodered.org/t/setting-websocket-headers-dynamically/88162)

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**Author:** [@moreelremy](https://discourse.nodered.org/u/moreelremy)\
**Replies:** 4\
**Last updated:** [24 May 2024 09:10 UTC](https://discourse.nodered.org/t/setting-websocket-headers-dynamically/88162 "2024-05-24T09:10:57Z")

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Hello, I'm currently running on the latest update of NodeRED (v4.0.0-beta.3-1) because of the Websockets new feature that allows you to set headers before the connection request. The thing is that I need to generate a B…

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## [A TO and FROM payload issue](https://discourse.nodered.org/t/a-to-and-from-payload-issue/88205)

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**Author:** [@Linhey](https://discourse.nodered.org/u/Linhey)\
**Replies:** 7\
**Last updated:** [24 May 2024 09:09 UTC](https://discourse.nodered.org/t/a-to-and-from-payload-issue/88205 "2024-05-24T09:09:04Z")

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I thought I was going mad, but I have stumbled upon a problem from the node-red-contrib-sun-position, when using the Moon Node. The payload output includes the following:- illumination: object fraction: 0.998603672706…

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## [OPC UA Client node error connection break](https://discourse.nodered.org/t/opc-ua-client-node-error-connection-break/88192)

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**Author:** [@Elo](https://discourse.nodered.org/u/Elo)\
**Replies:** 14\
**Last updated:** [24 May 2024 08:58 UTC](https://discourse.nodered.org/t/opc-ua-client-node-error-connection-break/88192 "2024-05-24T08:58:09Z")

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I am trying to run node-red continuously to connect with the OpcUa server automatically when the injection machine turns on but I got the error below.. node-red version v3.1.9 and node.js version v18.20.2 22 May 18:…

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## [Disable SSL certificate verification](https://discourse.nodered.org/t/disable-ssl-certificate-verification/88195)

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**Author:** [@LucasPelu](https://discourse.nodered.org/u/LucasPelu)\
**Replies:** 3\
**Last updated:** [24 May 2024 07:47 UTC](https://discourse.nodered.org/t/disable-ssl-certificate-verification/88195 "2024-05-24T07:47:12Z")

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Hi, Im trying to Disable SSL certificate verification but I couldn´t make it. I try to modify the settings file with: process.env.NODE\_TLS\_REJECT\_UNAUTHORIZED = '0'; And also I try with the next comand on the start up…

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## [Flowfuse/Device-Agent - npm WARN inflight@1.0.6: this module not supported, and leaks memory](https://discourse.nodered.org/t/flowfuse-device-agent-npm-warn-inflight-1-0-6-this-module-not-supported-and-leaks-memory/88211)

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**Author:** [@AperiaJesse](https://discourse.nodered.org/u/AperiaJesse)\
**Replies:** 1\
**Last updated:** [23 May 2024 23:44 UTC](https://discourse.nodered.org/t/flowfuse-device-agent-npm-warn-inflight-1-0-6-this-module-not-supported-and-leaks-memory/88211 "2024-05-23T23:44:55Z")

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Received this error installing the Flowfuse/Device-Agent. Windows CMD prompt npm install -g @flowfuse/device-agent Any workarounds?

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## [Specific object detection](https://discourse.nodered.org/t/specific-object-detection/88173)

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**Author:** [@user1234](https://discourse.nodered.org/u/user1234)\
**Replies:** 7\
**Last updated:** [23 May 2024 14:25 UTC](https://discourse.nodered.org/t/specific-object-detection/88173 "2024-05-23T14:25:33Z")

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Hey, I need a Node Red that can identify a particular object in an image and then make a security prediction for the detected object in the given image context. Have someone an idea how to Implement it ?

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## [Node-red:rpi-gpio.status.not-available](https://discourse.nodered.org/t/node-red-rpi-gpio-status-not-available/88158)

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**Author:** [@vani](https://discourse.nodered.org/u/vani)\
**Replies:** 21\
**Last updated:** [23 May 2024 11:22 UTC](https://discourse.nodered.org/t/node-red-rpi-gpio-status-not-available/88158 "2024-05-23T11:22:06Z")

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Hi, i am new in node-red. I try to connect ultrasonic sensor HC-SR04 to raspberry pi 4 and use palette rpi-srf. This is my setting of palette rpi-srf: and after i click deploy, there is an warning appear under palle…

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## [Http request node - Authentication](https://discourse.nodered.org/t/http-request-node-authentication/88168)

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**Author:** [@jttjtt](https://discourse.nodered.org/u/jttjtt)\
**Replies:** 5\
**Last updated:** [23 May 2024 09:58 UTC](https://discourse.nodered.org/t/http-request-node-authentication/88168 "2024-05-23T09:58:36Z")

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Hello, i am not sure if it is possible to send authentication username and password to http-request node. So when I have more nodes of this type, if I can manage the username and password from a global variable for exam…

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## [Missing values after passing through the csv node](https://discourse.nodered.org/t/missing-values-after-passing-through-the-csv-node/87978)

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**Author:** [@pierredemay](https://discourse.nodered.org/u/pierredemay)\
**Replies:** 31\
**Last updated:** [23 May 2024 09:26 UTC](https://discourse.nodered.org/t/missing-values-after-passing-through-the-csv-node/87978 "2024-05-23T09:26:24Z")

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Hi everyone, I'm trying to pass some objects (similar to the example below) at the CSV format but it's not going as planned. {"Numero":"BCUSA24PR04152024","Date":"15/04/2024","Code Journal":"GS","Exercice":24,"Compte":…

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## [Modbus connect to Inverter (goodwe GW10K-ET) fails on same port as a Python Script does work](https://discourse.nodered.org/t/modbus-connect-to-inverter-goodwe-gw10k-et-fails-on-same-port-as-a-python-script-does-work/88107)

<div class="topic-metadata">

**Author:** [@ehaase](https://discourse.nodered.org/u/ehaase)\
**Replies:** 9\
**Last updated:** [23 May 2024 01:13 UTC](https://discourse.nodered.org/t/modbus-connect-to-inverter-goodwe-gw10k-et-fails-on-same-port-as-a-python-script-does-work/88107 "2024-05-23T01:13:01Z")

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A connection by 'inverter\_test.py/inverter\_scan.py' by goodwe-library of python3 does work and as far as I have seen, this library is using port 8899 for UDP. There is no user/password authentication or similar as far as…

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## [Two Raspberry Pis check each other is online](https://discourse.nodered.org/t/two-raspberry-pis-check-each-other-is-online/88177)

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**Author:** [@daxliniere](https://discourse.nodered.org/u/daxliniere)\
**Replies:** 4\
**Last updated:** [22 May 2024 20:12 UTC](https://discourse.nodered.org/t/two-raspberry-pis-check-each-other-is-online/88177 "2024-05-22T20:12:48Z")

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Hey gang, I have an RPi at work and one at home. They're both on a private VPN, so effectively "on the same LAN" (virtually speaking). I would love a way to have them both check on each other for offline events and sen…

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## [How to get your Alexa cookie](https://discourse.nodered.org/t/how-to-get-your-alexa-cookie/88174)

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**Author:** [@DiverRich](https://discourse.nodered.org/u/DiverRich)\
**Replies:** 1\
**Last updated:** [22 May 2024 18:15 UTC](https://discourse.nodered.org/t/how-to-get-your-alexa-cookie/88174 "2024-05-22T18:15:55Z")

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If you're trying to figure out how to get a cookie for node-red to use Alexa with node-red-contrib-alexa-remote2-applestrudel, then you probably already know that alexa.amazon.com doesn't take you to a developer portal a…

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## [Resetting Node-Rede after Installing Node](https://discourse.nodered.org/t/resetting-node-rede-after-installing-node/88170)

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**Author:** [@sercancetin](https://discourse.nodered.org/u/sercancetin)\
**Replies:** 1\
**Last updated:** [22 May 2024 15:42 UTC](https://discourse.nodered.org/t/resetting-node-rede-after-installing-node/88170 "2024-05-22T15:42:18Z")

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Hello everyone. How can I automatically reset the node after installing it with the Node-Red API running on Docker on a local device? I just want to reset node-red without turning off the device. Is there a reset API or …

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## [Node Red Pallete](https://discourse.nodered.org/t/node-red-pallete/88172)

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**Author:** [@ARK](https://discourse.nodered.org/u/ARK)\
**Replies:** 4\
**Last updated:** [22 May 2024 14:26 UTC](https://discourse.nodered.org/t/node-red-pallete/88172 "2024-05-22T14:26:28Z")

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Hi Team, I am new to Nodered, and I need a few clarifications related to Palette. I am seeing issues related to palette usage. I downloaded a palette related to SQL on the development server, and the palette at that ti…

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## [Node-red.log in Temp Folder](https://discourse.nodered.org/t/node-red-log-in-temp-folder/87779)

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**Author:** [@Mohamed\_1711](https://discourse.nodered.org/u/Mohamed_1711)\
**Replies:** 22\
**Last updated:** [22 May 2024 11:01 UTC](https://discourse.nodered.org/t/node-red-log-in-temp-folder/87779 "2024-05-22T11:01:36Z")

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I would like to address the issue regarding the Node-red.log file size in the Temp folder located on the C-drive. The file size has been consistently increasing, reaching sizes as high as 60 GB and continues to grow. We …

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## [How to change the node-red app name, app icon, favicon and title?](https://discourse.nodered.org/t/how-to-change-the-node-red-app-name-app-icon-favicon-and-title/88151)

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**Author:** [@ArunP](https://discourse.nodered.org/u/ArunP)\
**Replies:** 2\
**Last updated:** [22 May 2024 09:54 UTC](https://discourse.nodered.org/t/how-to-change-the-node-red-app-name-app-icon-favicon-and-title/88151 "2024-05-22T09:54:32Z")

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## [Playing MP3 file using Exec node/mpg321, getting an error](https://discourse.nodered.org/t/playing-mp3-file-using-exec-node-mpg321-getting-an-error/88068)

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**Author:** [@Buzzylogic](https://discourse.nodered.org/u/Buzzylogic)\
**Replies:** 13\
**Last updated:** [22 May 2024 09:47 UTC](https://discourse.nodered.org/t/playing-mp3-file-using-exec-node-mpg321-getting-an-error/88068 "2024-05-22T09:47:01Z")

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I'm able to play sound files from the command line, but get an error 1 from the exec node. "High Performance MPEG 1.0/2.0/2.5 Audio Player for Layer 1, 2, and 3. Version 0.3.2-1 (2012/03/25). Written and copyrights by …

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## [Webcam shows locally but not remotely](https://discourse.nodered.org/t/webcam-shows-locally-but-not-remotely/88160)

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**Author:** [@PRABHAKAR82](https://discourse.nodered.org/u/PRABHAKAR82)\
**Replies:** 0\
**Last updated:** [22 May 2024 09:19 UTC](https://discourse.nodered.org/t/webcam-shows-locally-but-not-remotely/88160 "2024-05-22T09:19:22Z")

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The webcam works on "http://127.0.0.1:4444/cam" or a. localhost, but when I open node red through the static IP 103.113.137.\*\*:4444/cam, it is not showing the video. Please see the flow of how I added webcams for your re…

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## [Http Request node "unable to get local issuer certificate"](https://discourse.nodered.org/t/http-request-node-unable-to-get-local-issuer-certificate/88145)

<div class="topic-metadata">

**Author:** [@LucasPelu](https://discourse.nodered.org/u/LucasPelu)\
**Replies:** 1\
**Last updated:** [21 May 2024 14:19 UTC](https://discourse.nodered.org/t/http-request-node-unable-to-get-local-issuer-certificate/88145 "2024-05-21T14:19:38Z")

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Hi Im having some troubles with the http Request node. I debug the error "RequestError: unable to get local issuer certificate". In the Postman I had the same problem but I could solve it changing the configuration. I …

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