# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=76

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

**Page:** 77

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## [Serial line tx/rx conflict](https://discourse.nodered.org/t/serial-line-tx-rx-conflict/92591)

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**Author:** [@marke](https://discourse.nodered.org/u/marke)\
**Replies:** 5\
**Last updated:** [24 October 2024 10:40 UTC](https://discourse.nodered.org/t/serial-line-tx-rx-conflict/92591 "2024-10-24T10:40:58Z")

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Hi I'm starting a new project using RS485 MODBUS; I can drive the conncted device using "serial out" node but if in the same flow I put a "serial in" node, trhe serial out node switch to "disconnected" and "serial in" n…

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## [Bug with node-red-contrib-mytimeout?](https://discourse.nodered.org/t/bug-with-node-red-contrib-mytimeout/92624)

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**Author:** [@Sirhc](https://discourse.nodered.org/u/Sirhc)\
**Replies:** 1\
**Last updated:** [24 October 2024 07:57 UTC](https://discourse.nodered.org/t/bug-with-node-red-contrib-mytimeout/92624 "2024-10-24T07:57:06Z")

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Hello I am trying to cancel the mytimeout node, by sending payload "cancel" after sending a payload "on". Instead of cancelling, the timer just resets and starts counting again. Even if I just send a cancel payload, i…

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## [Ui-chart fails to update specific to ui-page and ui-group](https://discourse.nodered.org/t/ui-chart-fails-to-update-specific-to-ui-page-and-ui-group/92494)

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**Author:** [@bjvt](https://discourse.nodered.org/u/bjvt)\
**Replies:** 9\
**Last updated:** [24 October 2024 00:24 UTC](https://discourse.nodered.org/t/ui-chart-fails-to-update-specific-to-ui-page-and-ui-group/92494 "2024-10-24T00:24:47Z")

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My three ui-charts (bar chart) on a specific ui-group and ui-page showed up one morning with one bar in the far left x-axis. Debug is fine, its getting the proper message. I cleared history then i saw nothing while de…

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## [Automatically import SubModule](https://discourse.nodered.org/t/automatically-import-submodule/92609)

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**Author:** [@PetrVasata](https://discourse.nodered.org/u/PetrVasata)\
**Replies:** 2\
**Last updated:** [23 October 2024 14:47 UTC](https://discourse.nodered.org/t/automatically-import-submodule/92609 "2024-10-23T14:47:12Z")

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Hi all, I’m trying to import a subflow into a project. I’ve been using an HTTP POST request to /flow, which works fine for flows but not for subflows. I’ve tried reorganizing the JSON data, but I still haven’t had any su…

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## [Response to HTTP Post not passing to function](https://discourse.nodered.org/t/response-to-http-post-not-passing-to-function/92471)

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**Author:** [@cshuttle](https://discourse.nodered.org/u/cshuttle)\
**Replies:** 4\
**Last updated:** [23 October 2024 14:05 UTC](https://discourse.nodered.org/t/response-to-http-post-not-passing-to-function/92471 "2024-10-23T14:05:34Z")

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I have this flow which is looking at a HomeAssistant calendar to get some events, find the location, and determine if it's a valid location to navigate to based on a call to an API service. I'm able to make the call and …

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## [How can I make the identifier variable](https://discourse.nodered.org/t/how-can-i-make-the-identifier-variable/92610)

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**Author:** [@ChrisWeb71](https://discourse.nodered.org/u/ChrisWeb71)\
**Replies:** 2\
**Last updated:** [23 October 2024 13:18 UTC](https://discourse.nodered.org/t/how-can-i-make-the-identifier-variable/92610 "2024-10-23T13:18:45Z")

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how can I make the identifier variable e.g. how can I make the identifier variable e.g. var identifier = (msg.topic); msg.payload = { ""+identifier+"" :msg.payload } return msg; //Unfortunately, this method does not …

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## [Rename browser tabs](https://discourse.nodered.org/t/rename-browser-tabs/92603)

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**Author:** [@ath0rus](https://discourse.nodered.org/u/ath0rus)\
**Replies:** 4\
**Last updated:** [23 October 2024 10:46 UTC](https://discourse.nodered.org/t/rename-browser-tabs/92603 "2024-10-23T10:46:43Z")

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Is it possible to rename the browser tabs in the editor, I have a few instances across multiple pc's and I want to have the tab show the devices name (or a name i set) so its easier to know which devices node red im mess…

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## [Google tts ultimate node - questions, kinda](https://discourse.nodered.org/t/google-tts-ultimate-node-questions-kinda/92561)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 5\
**Last updated:** [23 October 2024 10:17 UTC](https://discourse.nodered.org/t/google-tts-ultimate-node-questions-kinda/92561 "2024-10-23T10:17:19Z")

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Sorry folks, but I just want to ask/check with people about this node. When I'm logged into that machine and am looking. ~/.node-red/sonospollyttsstorage $ ls hailingpermanentfiles ttsfiles ttspermanentfiles ttsulti…

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## [Omnicomm LLS Fuel level sensors](https://discourse.nodered.org/t/omnicomm-lls-fuel-level-sensors/92588)

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**Author:** [@DigitDurban](https://discourse.nodered.org/u/DigitDurban)\
**Replies:** 2\
**Last updated:** [23 October 2024 10:02 UTC](https://discourse.nodered.org/t/omnicomm-lls-fuel-level-sensors/92588 "2024-10-23T10:02:07Z")

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Good evening all, I am trying to use Nodered serial to "parse" an Omnicom LLS fuel sensor. I have found 3 or 4 "Github" projects however all of them dont make much sense to me. Is there anyone out there that can use t…

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## [Change the content of a GPS-Object to fit in worldmap](https://discourse.nodered.org/t/change-the-content-of-a-gps-object-to-fit-in-worldmap/92583)

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**Author:** [@mcelch](https://discourse.nodered.org/u/mcelch)\
**Replies:** 5\
**Last updated:** [22 October 2024 20:05 UTC](https://discourse.nodered.org/t/change-the-content-of-a-gps-object-to-fit-in-worldmap/92583 "2024-10-22T20:05:41Z")

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Hi, im Beginner here and make my first steps with node red and want to show vessels on a map. I managed to show a first Vessel on my map. It sends out of a Installation of Venus OS from a Raspberry. Victron provides spe…

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## [Is this a bug - flow.set()](https://discourse.nodered.org/t/is-this-a-bug-flow-set/92537)

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**Author:** [@Tilerdon](https://discourse.nodered.org/u/Tilerdon)\
**Replies:** 11\
**Last updated:** [22 October 2024 09:11 UTC](https://discourse.nodered.org/t/is-this-a-bug-flow-set/92537 "2024-10-22T09:11:28Z")

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I have a network of ESP32 based devices which monitor the moisture levels in my Houseplants. Each device identifies itself to NodeRed via an MQTT message with the IP Address of the device as the Topic. I want to be able …

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## [How to read contents of attachments acquired from HTTP request?](https://discourse.nodered.org/t/how-to-read-contents-of-attachments-acquired-from-http-request/92567)

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**Author:** [@twisteria](https://discourse.nodered.org/u/twisteria)\
**Replies:** 2\
**Last updated:** [22 October 2024 06:29 UTC](https://discourse.nodered.org/t/how-to-read-contents-of-attachments-acquired-from-http-request/92567 "2024-10-22T06:29:43Z")

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Hi. I have one project needs to connect to an external server (via HTTP request) and get a binary data file. So far, so good and HTTP response shows something like: headers: object date: "Tue, 22 Oct 2024 04:19:28 G…

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## [PiSignage Services/API Node TypeError](https://discourse.nodered.org/t/pisignage-services-api-node-typeerror/92560)

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**Author:** [@ryanprel](https://discourse.nodered.org/u/ryanprel)\
**Replies:** 0\
**Last updated:** [21 October 2024 20:52 UTC](https://discourse.nodered.org/t/pisignage-services-api-node-typeerror/92560 "2024-10-21T20:52:33Z")

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@tec6/node-red-pisignage-services I'm having some troubles with this node for controlling pisignage through the API. It was working a couple of weeks ago and after no changes to my setup, it is no longer working. I'm…

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## [RequestError: connect ECONNREFUSED 127.0.0.1:443](https://discourse.nodered.org/t/requesterror-connect-econnrefused-127-0-0-1-443/92548)

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**Author:** [@synatash](https://discourse.nodered.org/u/synatash)\
**Replies:** 16\
**Last updated:** [21 October 2024 18:07 UTC](https://discourse.nodered.org/t/requesterror-connect-econnrefused-127-0-0-1-443/92548 "2024-10-21T18:07:08Z")

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Hello, for the last few days I have been observing such an error on a node that had previously worked normally for a long time. msg : error "RequestError: connect ECONNREFUSED 127.0.0.1:443" Honestly, I am not very str…

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## [Line break Mysql query](https://discourse.nodered.org/t/line-break-mysql-query/92554)

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**Author:** [@edje11](https://discourse.nodered.org/u/edje11)\
**Replies:** 2\
**Last updated:** [21 October 2024 16:28 UTC](https://discourse.nodered.org/t/line-break-mysql-query/92554 "2024-10-21T16:28:27Z")

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Is there a way to line break the sql query for the node-red-node-mysql node. The mysql query is a string that's assigned to the msg.topic. Some query 's are that long that you get lost in the editor screen. For now I b…

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## [Help with hidden config nodes](https://discourse.nodered.org/t/help-with-hidden-config-nodes/92550)

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**Author:** [@S-E-B-123](https://discourse.nodered.org/u/S-E-B-123)\
**Replies:** 2\
**Last updated:** [21 October 2024 14:18 UTC](https://discourse.nodered.org/t/help-with-hidden-config-nodes/92550 "2024-10-21T14:18:11Z")

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What are hidden config nodes and where can i find them?

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## [Reading data from an ultrasonic sensor](https://discourse.nodered.org/t/reading-data-from-an-ultrasonic-sensor/92543)

<div class="topic-metadata">

**Author:** [@slaaww](https://discourse.nodered.org/u/slaaww)\
**Replies:** 5\
**Last updated:** [21 October 2024 14:06 UTC](https://discourse.nodered.org/t/reading-data-from-an-ultrasonic-sensor/92543 "2024-10-21T14:06:54Z")

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Hello, I have an ultrasonic sensor MB7389 and I can't get the sensor values ​​on node-red. But I can see them on the raspberry pi by minicom. However, I selected the right parameters in the serialport node.

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## [PID controller with 3 input](https://discourse.nodered.org/t/pid-controller-with-3-input/92393)

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**Author:** [@Kundepuu](https://discourse.nodered.org/u/Kundepuu)\
**Replies:** 16\
**Last updated:** [21 October 2024 12:26 UTC](https://discourse.nodered.org/t/pid-controller-with-3-input/92393 "2024-10-21T12:26:16Z")

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What would be the best way to implement a cooking program like the following. The following temperatures are used and got - ambient, surface and core. Set the values ​​(e.g. sous vide cooking) to an ambient temperatur…

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## [Help getting a substring from payload](https://discourse.nodered.org/t/help-getting-a-substring-from-payload/92536)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 6\
**Last updated:** [21 October 2024 09:44 UTC](https://discourse.nodered.org/t/help-getting-a-substring-from-payload/92536 "2024-10-21T09:44:04Z")

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Sorry folks, seems I can't work out how to do this. eg: 2024-10-21 17:45:18 UpLink Online I want only the last part: UpLink Online (Given UpLink and Online can change) I have the string node, but I seem to be miss…

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## [Need help with upgrade from 3.0.2 to latest in Debian](https://discourse.nodered.org/t/need-help-with-upgrade-from-3-0-2-to-latest-in-debian/92409)

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**Author:** [@Olaa](https://discourse.nodered.org/u/Olaa)\
**Replies:** 19\
**Last updated:** [20 October 2024 13:26 UTC](https://discourse.nodered.org/t/need-help-with-upgrade-from-3-0-2-to-latest-in-debian/92409 "2024-10-20T13:26:17Z")

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Want to upgrade Node-Red from 3.0.2 to latest. I'm running Debian. Terrified as I have zero clue. Help please. Tried according to the ND website and get the following message! No idea what that means! Running Node-RED i…

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## [Dynamic, live debug & message tracing](https://discourse.nodered.org/t/dynamic-live-debug-message-tracing/92319)

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**Author:** [@gregorius](https://discourse.nodered.org/u/gregorius)\
**Replies:** 2\
**Last updated:** [20 October 2024 13:13 UTC](https://discourse.nodered.org/t/dynamic-live-debug-message-tracing/92319 "2024-10-20T13:13:20Z")

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Hi There, I have heard that one minor bugbear about Node-RED is debugging. Typical scenario is the missing debug node and having to add it, then having to redeploy and then having to restart the flow. And then nothing h…

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## [Can't install i2c or ina219 via palette or manually under nodered 4.0.5](https://discourse.nodered.org/t/cant-install-i2c-or-ina219-via-palette-or-manually-under-nodered-4-0-5/92467)

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**Author:** [@muggins](https://discourse.nodered.org/u/muggins)\
**Replies:** 22\
**Last updated:** [20 October 2024 13:10 UTC](https://discourse.nodered.org/t/cant-install-i2c-or-ina219-via-palette-or-manually-under-nodered-4-0-5/92467 "2024-10-20T13:10:13Z")

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My docker compose node red has been very stable and I have multiple backups which also now fail. Because of calls to i2c in settings.js node red will not start. What happened? Is it an auto upgrade to 4.0.5 Anyway I've …

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## [Multiple permissives for output?](https://discourse.nodered.org/t/multiple-permissives-for-output/92499)

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**Author:** [@txrocks](https://discourse.nodered.org/u/txrocks)\
**Replies:** 2\
**Last updated:** [20 October 2024 11:44 UTC](https://discourse.nodered.org/t/multiple-permissives-for-output/92499 "2024-10-20T11:44:03Z")

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I am a fairly new user to Nodered, and JS. I am trying to setup a pump control. The pump motor will run run when the pressure switch closes. There is a comparator that is comparing the pump current. If the pump curre…

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## [Debugging function](https://discourse.nodered.org/t/debugging-function/20831)

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**Author:** [@kanke](https://discourse.nodered.org/u/kanke)\
**Replies:** 7\
**Last updated:** [19 October 2024 10:03 UTC](https://discourse.nodered.org/t/debugging-function/20831 "2024-10-19T10:03:24Z")

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Just started to use function node. Curious how do you debug the code step by step? Or how to log values to console/debug window or to a file? Thanks.

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## [Cron-plus error "System Time Change Detected" and not executing](https://discourse.nodered.org/t/cron-plus-error-system-time-change-detected-and-not-executing/92521)

<div class="topic-metadata">

**Author:** [@BobUrban](https://discourse.nodered.org/u/BobUrban)\
**Replies:** 4\
**Last updated:** [19 October 2024 10:00 UTC](https://discourse.nodered.org/t/cron-plus-error-system-time-change-detected-and-not-executing/92521 "2024-10-19T10:00:40Z")

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Hello, I am running NodeRed 4.0.2 on a Pi Model 2B. I have some very simple flow with cronplus nodes that sends mqtt commands. I am getting quite often (not all the time for some weird reason) this error: System Time C…

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## [Connecting with multiple devices in modbus](https://discourse.nodered.org/t/connecting-with-multiple-devices-in-modbus/92434)

<div class="topic-metadata">

**Author:** [@MHNYZ](https://discourse.nodered.org/u/MHNYZ)\
**Replies:** 5\
**Last updated:** [19 October 2024 06:02 UTC](https://discourse.nodered.org/t/connecting-with-multiple-devices-in-modbus/92434 "2024-10-19T06:02:43Z")

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Hi every one , i want to connect and control multiple (two) devices through my rs485 to usb converter in my node red flow , but it seems node red can control one at the same time , and when it connects to one device it c…

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## [Excluding env vars](https://discourse.nodered.org/t/excluding-env-vars/92497)

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**Author:** [@bubson](https://discourse.nodered.org/u/bubson)\
**Replies:** 2\
**Last updated:** [18 October 2024 23:20 UTC](https://discourse.nodered.org/t/excluding-env-vars/92497 "2024-10-18T23:20:41Z")

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Hi, I can use "envVarExcludes" key in settings.js to exclude some env variables that i do not want to be present in node-red. This is handled in @node-red/runtime/lib/flows/util.js However inside function node I can g…

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## [New To InfluxDB node](https://discourse.nodered.org/t/new-to-influxdb-node/92505)

<div class="topic-metadata">

**Author:** [@Jayeshpitale1](https://discourse.nodered.org/u/Jayeshpitale1)\
**Replies:** 1\
**Last updated:** [18 October 2024 17:05 UTC](https://discourse.nodered.org/t/new-to-influxdb-node/92505 "2024-10-18T17:05:16Z")

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Hi there, i have some array data from function node and i wanted to save it to influxdb now the thing is i am new to it and i dont know what to do

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## [Project Documentation Generation](https://discourse.nodered.org/t/project-documentation-generation/92473)

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**Author:** [@garynl](https://discourse.nodered.org/u/garynl)\
**Replies:** 2\
**Last updated:** [18 October 2024 16:23 UTC](https://discourse.nodered.org/t/project-documentation-generation/92473 "2024-10-18T16:23:10Z")

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Is there any software available that takes a node-red project and extracts flows and descriptions and puts them together as a document (e.g a pdf) Cheers gary

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## [Send e-mail with Microsoft oauth2](https://discourse.nodered.org/t/send-e-mail-with-microsoft-oauth2/92493)

<div class="topic-metadata">

**Author:** [@N1bble](https://discourse.nodered.org/u/N1bble)\
**Replies:** 0\
**Last updated:** [18 October 2024 12:44 UTC](https://discourse.nodered.org/t/send-e-mail-with-microsoft-oauth2/92493 "2024-10-18T12:44:06Z")

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Hello, Since September 16th Microsoft is forcing to use oauth2 authentication and disabled basic authentication. I'm using the e-mail node so send messages to me, but can't find out how to configure the oauth2 node. T…

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