# Latest

**URL:** https://discourse.nodered.org/latest.md?page=138

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

**Page:** 139

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## [I can change a button label but not the color](https://discourse.nodered.org/t/i-can-change-a-button-label-but-not-the-color/92574)

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**Author:** [@lucamrc](https://discourse.nodered.org/u/lucamrc)\
**Replies:** 3\
**Last updated:** [22 October 2024 12:45 UTC](https://discourse.nodered.org/t/i-can-change-a-button-label-but-not-the-color/92574 "2024-10-22T12:45:52Z")

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Hello to everyone, I'm having some problem in NodeRed dashboard 2: I can change the label of a button sending the new label in msg.ui\_update.label but not the color via msg.ui\_update.buttonColor. Any ideas on how I sh…

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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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## [SVG trigger the specified LED ON](https://discourse.nodered.org/t/svg-trigger-the-specified-led-on/92546)

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**Author:** [@king](https://discourse.nodered.org/u/king)\
**Replies:** 2\
**Last updated:** [21 October 2024 19:55 UTC](https://discourse.nodered.org/t/svg-trigger-the-specified-led-on/92546 "2024-10-21T19:55:12Z")

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Sorry~ Because I'm new to SVG I would like to ask how to trigger the specified LED ON in the background image flows (1).json (149.0 KB)

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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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## [Retaining chart.js data after browser refresh](https://discourse.nodered.org/t/retaining-chart-js-data-after-browser-refresh/92525)

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**Author:** [@Paul-Reed](https://discourse.nodered.org/u/Paul-Reed)\
**Replies:** 12\
**Last updated:** [21 October 2024 20:39 UTC](https://discourse.nodered.org/t/retaining-chart-js-data-after-browser-refresh/92525 "2024-10-21T20:39:11Z")

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As the current dashboard-2 chart node lacks many formatting options, I'm trying to use a dashboard template node to create a line chart, and thereby use other chart.js options to make my charts display better. I don't k…

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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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## [Change css parameters for message to display with ui\_template](https://discourse.nodered.org/t/change-css-parameters-for-message-to-display-with-ui-template/92553)

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**Author:** [@gNeandr](https://discourse.nodered.org/u/gNeandr)\
**Replies:** 1\
**Last updated:** [21 October 2024 16:59 UTC](https://discourse.nodered.org/t/change-css-parameters-for-message-to-display-with-ui-template/92553 "2024-10-21T16:59:46Z")

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Try to use the "Template" (node-red-dashboard : ui\_template) to display status/error messages. To get different outlines (eg. change color) I come up with this code: \<!-- \<div id="{{'my\_'+$id}}" style="font-size:small"\>…

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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)

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**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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## [Small hobby project: home cinema for vintage devices (LaserDisc, HDDVD, Video Projector, etc.)](https://discourse.nodered.org/t/small-hobby-project-home-cinema-for-vintage-devices-laserdisc-hddvd-video-projector-etc/92427)

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**Author:** [@generikz](https://discourse.nodered.org/u/generikz)\
**Replies:** 1\
**Last updated:** [21 October 2024 12:31 UTC](https://discourse.nodered.org/t/small-hobby-project-home-cinema-for-vintage-devices-laserdisc-hddvd-video-projector-etc/92427 "2024-10-21T12:31:01Z")

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Still having and using a LOT of vintage gears at home. Most of them predates IP/Ethernet and, if you're lucky, had one-way serial ports, or proprietary IR interfaces (SR, Control S, etc.) that you could leverage. Ex: P…

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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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## [Dashboard Updates: Dialogs, Customisable Application Icon, Histograms + More](https://discourse.nodered.org/t/dashboard-updates-dialogs-customisable-application-icon-histograms-more/92374)

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**Author:** [@joepavitt](https://discourse.nodered.org/u/joepavitt)\
**Replies:** 21\
**Last updated:** [21 October 2024 09:20 UTC](https://discourse.nodered.org/t/dashboard-updates-dialogs-customisable-application-icon-histograms-more/92374 "2024-10-21T09:20:46Z")

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Hi All, just wanted to make you aware of the new update for Dashboard. In particular, I think the new Group "type" property will be really useful/popular, as it makes it very easy to render content into a Dialog/Modal…

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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)

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**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)

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**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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## [Twonky Media Server Collection Available](https://discourse.nodered.org/t/twonky-media-server-collection-available/92518)

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**Author:** [@Vahdettin](https://discourse.nodered.org/u/Vahdettin)\
**Replies:** 0\
**Last updated:** [19 October 2024 04:44 UTC](https://discourse.nodered.org/t/twonky-media-server-collection-available/92518 "2024-10-19T04:44:52Z")

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Hello all, A collection for reading a Twonky server and controlling playback on DLNA devices is now available. This collection has been in use in my own home for quite some time so even though this is the first publish…

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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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## [Limiting config node to one instance](https://discourse.nodered.org/t/limiting-config-node-to-one-instance/92244)

<div class="topic-metadata">

**Author:** [@jpadie](https://discourse.nodered.org/u/jpadie)\
**Replies:** 14\
**Last updated:** [18 October 2024 19:59 UTC](https://discourse.nodered.org/t/limiting-config-node-to-one-instance/92244 "2024-10-18T19:59:39Z")

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is there a method to ensure that the editor is limited to only one config node of a type? The specific use case sets up a listener on a specific port so creating more than one instance of the config node makes little se…

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## [XYD02 control panel and suggestions for improvement](https://discourse.nodered.org/t/xyd02-control-panel-and-suggestions-for-improvement/92470)

<div class="topic-metadata">

**Author:** [@ffich](https://discourse.nodered.org/u/ffich)\
**Replies:** 3\
**Last updated:** [18 October 2024 17:58 UTC](https://discourse.nodered.org/t/xyd02-control-panel-and-suggestions-for-improvement/92470 "2024-10-18T17:58:02Z")

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Hi folks, I've just created this control panel for the XY-MD02 RTU modbus sensor: Today it's not much handy, as the user has to manually change the serial port reference in the modbus configuration node (se the GitHu…

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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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## [Dynamic group creation](https://discourse.nodered.org/t/dynamic-group-creation/92387)

<div class="topic-metadata">

**Author:** [@garynl](https://discourse.nodered.org/u/garynl)\
**Replies:** 6\
**Last updated:** [18 October 2024 17:01 UTC](https://discourse.nodered.org/t/dynamic-group-creation/92387 "2024-10-18T17:01:37Z")

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I have five xiaomi environment devices each with three sensors (supplying temp, humidity, pressure, and a battery state). I had to implement a group (card?) for each one of them. this makes a 'lot' of work if I need to c…

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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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## [📈 What about this little thingy?](https://discourse.nodered.org/t/what-about-this-little-thingy/92292)

<div class="topic-metadata">

**Author:** [@hotNipi](https://discourse.nodered.org/u/hotNipi)\
**Replies:** 25\
**Last updated:** [18 October 2024 14:45 UTC](https://discourse.nodered.org/t/what-about-this-little-thingy/92292 "2024-10-18T14:45:28Z")

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CODE\<template\> \<div\> \<div class="card-chart-value"\>{{formatted}}\</div\> \<div id="charting-area-1" \>\</div\> \</div\> \</template\> &…

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