# Latest

**URL:** https://discourse.nodered.org/latest.md?page=611

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

**Page:** 612

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## [Need help to change group background color](https://discourse.nodered.org/t/need-help-to-change-group-background-color/59578)

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**Author:** [@WeeSeong](https://discourse.nodered.org/u/WeeSeong)\
**Replies:** 3\
**Last updated:** [10 March 2022 00:53 UTC](https://discourse.nodered.org/t/need-help-to-change-group-background-color/59578 "2022-03-10T00:53:13Z")

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Hi, I've been trying to make a dynamic background color and I can't seem to get it working even after referring to \[solved\] Change color of template node with variable. I've been wondering on how do you get the name for …

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## [Starting Node Red with a clean slate!](https://discourse.nodered.org/t/starting-node-red-with-a-clean-slate/17315)

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**Author:** [@johnd](https://discourse.nodered.org/u/johnd)\
**Replies:** 4\
**Last updated:** [9 March 2022 23:16 UTC](https://discourse.nodered.org/t/starting-node-red-with-a-clean-slate/17315 "2022-03-09T23:16:04Z")

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One aspect of reacquainting myself with Node Red that I'm struggling with is that - unless I've missed it, which is entirely possible - there seems to be no obvious way of clearing out the NR workspace and starting a new…

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## [Node-Red receive JSON File through HTTP](https://discourse.nodered.org/t/node-red-receive-json-file-through-http/59528)

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**Author:** [@Mohamedaminhamdad](https://discourse.nodered.org/u/Mohamedaminhamdad)\
**Replies:** 6\
**Last updated:** [9 March 2022 22:01 UTC](https://discourse.nodered.org/t/node-red-receive-json-file-through-http/59528 "2022-03-09T22:01:24Z")

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Hello everybody, I am a new in Node-Red and I have a question regarding the HTTP node in Node red. My node-red is running on an virtual operating system (ctrlX Automation from Bosch Rexroth) and I want to send to it js…

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## [Modbus TCP iSMA-B-MIX38-IP](https://discourse.nodered.org/t/modbus-tcp-isma-b-mix38-ip/59513)

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**Author:** [@Kimovitzh](https://discourse.nodered.org/u/Kimovitzh)\
**Replies:** 1\
**Last updated:** [9 March 2022 21:57 UTC](https://discourse.nodered.org/t/modbus-tcp-isma-b-mix38-ip/59513 "2022-03-09T21:57:33Z")

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New guy here :raised\_hand: I'm trying to learn node-red over programming BMS in Niagara. Coming from Niagara I have a couple of iSMA MIX38 IO's that I'm trying to communicate with in node-red via modbus TCP/IP. In Nia…

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## [Neopixel node does not send out signal](https://discourse.nodered.org/t/neopixel-node-does-not-send-out-signal/59438)

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**Author:** [@nick](https://discourse.nodered.org/u/nick)\
**Replies:** 7\
**Last updated:** [9 March 2022 20:58 UTC](https://discourse.nodered.org/t/neopixel-node-does-not-send-out-signal/59438 "2022-03-09T20:58:40Z")

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Dear all, i am trying to control a WS2812B ledstrip with the neopixel node. i am using a raspberry pi 3B with 2022-01-28-raspios-bullseye-armhf and node red version 2.2.2. i followed the instruction of installing the …

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## [Cant write to register in Modbus](https://discourse.nodered.org/t/cant-write-to-register-in-modbus/8566)

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**Author:** [@miljume](https://discourse.nodered.org/u/miljume)\
**Replies:** 3\
**Last updated:** [9 March 2022 20:23 UTC](https://discourse.nodered.org/t/cant-write-to-register-in-modbus/8566 "2022-03-09T20:23:44Z")

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Hello, I have a PLC which communicate by Modbus and I have integrated to that with Node Red. I am able to read registers with FC1 without problems but when I try to write a flag with the address 1544 with FC5 I am not a…

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## [Put the key of a object in ng-repeat to a button's ng-click to send the key as part of a msg](https://discourse.nodered.org/t/put-the-key-of-a-object-in-ng-repeat-to-a-buttons-ng-click-to-send-the-key-as-part-of-a-msg/59614)

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**Author:** [@thematrixrearwindow](https://discourse.nodered.org/u/thematrixrearwindow)\
**Replies:** 2\
**Last updated:** [9 March 2022 19:49 UTC](https://discourse.nodered.org/t/put-the-key-of-a-object-in-ng-repeat-to-a-buttons-ng-click-to-send-the-key-as-part-of-a-msg/59614 "2022-03-09T19:49:11Z")

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Hi there, how can i get the key of the (key, value) to a button to send it as msg.payload in ng-click? In this part i want to insert the {{key}} from the ng-repeat but that doesn't seem to work. \<md-button ng-click="m…

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## [How to compare 2 data sets with either an integral or derivative](https://discourse.nodered.org/t/how-to-compare-2-data-sets-with-either-an-integral-or-derivative/59401)

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**Author:** [@bkenobi](https://discourse.nodered.org/u/bkenobi)\
**Replies:** 23\
**Last updated:** [9 March 2022 19:42 UTC](https://discourse.nodered.org/t/how-to-compare-2-data-sets-with-either-an-integral-or-derivative/59401 "2022-03-09T19:42:49Z")

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I have a power meter reader that feeds data to NR through MQTT (reader -\> 433MHz radio -\> rtl\_433 -\> MQTT -\> NR). Once the data is in NR, I process it and send it to InfluxDB for storage. The data comes in correctly so…

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## [Email formatting](https://discourse.nodered.org/t/email-formatting/59611)

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**Author:** [@PiMo131](https://discourse.nodered.org/u/PiMo131)\
**Replies:** 1\
**Last updated:** [9 March 2022 19:28 UTC](https://discourse.nodered.org/t/email-formatting/59611 "2022-03-09T19:28:05Z")

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Hi, I want to format the msg.body property for an email. I have two variable (lat & lon) for storing the location data. then I am formatting a link to match the google-maps links. This way the receiver should be able to…

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## [Node-red-google-notify - can it read msg.payload?](https://discourse.nodered.org/t/node-red-google-notify-can-it-read-msg-payload/59520)

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**Author:** [@Anto79-ops](https://discourse.nodered.org/u/Anto79-ops)\
**Replies:** 22\
**Last updated:** [9 March 2022 17:44 UTC](https://discourse.nodered.org/t/node-red-google-notify-can-it-read-msg-payload/59520 "2022-03-09T17:44:20Z")

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Anybody know if the node-red-google-notify node can read/annouce msg.payload instead of actual text? I placed "msg.payload" in the text box and it just read msg.payload. thanks

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## [My feature request/wishlist/suggestions for 3.0](https://discourse.nodered.org/t/my-feature-request-wishlist-suggestions-for-3-0/59606)

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**Author:** [@mbonani](https://discourse.nodered.org/u/mbonani)\
**Replies:** 0\
**Last updated:** [9 March 2022 16:49 UTC](https://discourse.nodered.org/t/my-feature-request-wishlist-suggestions-for-3-0/59606 "2022-03-09T16:49:52Z")

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Config nodes in subflow modules Currently, we cannot use nodes that depend on configuration nodes inside subflow modules because there's no way to configure the server property of those nodes. There's a post on the forum…

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## [RequestError: Incorrect syntax near '.'](https://discourse.nodered.org/t/requesterror-incorrect-syntax-near/59605)

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**Author:** [@QGIO](https://discourse.nodered.org/u/QGIO)\
**Replies:** 3\
**Last updated:** [9 March 2022 16:33 UTC](https://discourse.nodered.org/t/requesterror-incorrect-syntax-near/59605 "2022-03-09T16:33:10Z")

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I have created the following flow: \</\> in which I send by the button 'Carica' a number to the function in order to select a specific raw of a SQL database table. On the MSSQL node I get the following error: Reques…

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## [Controller Firewall Opening](https://discourse.nodered.org/t/controller-firewall-opening/59587)

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**Author:** [@jpmaloney2](https://discourse.nodered.org/u/jpmaloney2)\
**Replies:** 7\
**Last updated:** [9 March 2022 16:07 UTC](https://discourse.nodered.org/t/controller-firewall-opening/59587 "2022-03-09T16:07:49Z")

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Apologies if my question is not thoroughly written enough I am very new to this software. I have a Sturtevant Richmont torque wrench controller that I need to get approval through my company's IT department to use with …

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## [Proof of concept for a replacement for MQTT Explorer](https://discourse.nodered.org/t/proof-of-concept-for-a-replacement-for-mqtt-explorer/58942)

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**Author:** [@TotallyInformation](https://discourse.nodered.org/u/TotallyInformation)\
**Replies:** 24\
**Last updated:** [9 March 2022 15:52 UTC](https://discourse.nodered.org/t/proof-of-concept-for-a-replacement-for-mqtt-explorer/58942 "2022-03-09T15:52:48Z")

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I mentioned this in passing in another thread but thought I'd share the progress so far in case anyone is interested. This came out of a recent discussion about MQTT v5 and it made me realise that it looks as though the…

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## [Uibuilder with chart.js, Wait on msg from nodered](https://discourse.nodered.org/t/uibuilder-with-chart-js-wait-on-msg-from-nodered/59581)

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**Author:** [@endkinghenry](https://discourse.nodered.org/u/endkinghenry)\
**Replies:** 7\
**Last updated:** [9 March 2022 15:43 UTC](https://discourse.nodered.org/t/uibuilder-with-chart-js-wait-on-msg-from-nodered/59581 "2022-03-09T15:43:54Z")

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Dear sir, madam, I'm kind of new to programming but does anyone know/ care to explain how to wait for msg from nodered before proceeding the function ? // I am using uibuilder Currently I'm trying to make a chart using…

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## [Creating a test framework to test the movement of my machine without needing to connect my ma](https://discourse.nodered.org/t/creating-a-test-framework-to-test-the-movement-of-my-machine-without-needing-to-connect-my-ma/59602)

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**Author:** [@jannaelghabaty](https://discourse.nodered.org/u/jannaelghabaty)\
**Replies:** 0\
**Last updated:** [9 March 2022 15:25 UTC](https://discourse.nodered.org/t/creating-a-test-framework-to-test-the-movement-of-my-machine-without-needing-to-connect-my-ma/59602 "2022-03-09T15:25:07Z")

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Hello, We have a machine that uses a configuration node to be able to work. For example we have movement node that moves this machine from a place to another and that movement node would be using the configuration node …

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## [Add button to ui-table](https://discourse.nodered.org/t/add-button-to-ui-table/59597)

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**Author:** [@regissg](https://discourse.nodered.org/u/regissg)\
**Replies:** 0\
**Last updated:** [9 March 2022 14:40 UTC](https://discourse.nodered.org/t/add-button-to-ui-table/59597 "2022-03-09T14:40:53Z")

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Is it possible to add dashboard buttons in the ui-table? Also is there a way to disable the row header sorting?

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## [The transport protocol is not supported](https://discourse.nodered.org/t/the-transport-protocol-is-not-supported/58301)

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**Author:** [@tienanh2910](https://discourse.nodered.org/u/tienanh2910)\
**Replies:** 1\
**Last updated:** [9 March 2022 14:21 UTC](https://discourse.nodered.org/t/the-transport-protocol-is-not-supported/58301 "2022-03-09T14:21:54Z")

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Hi everyone! I am facing problem in configuring OPC UA - Client . In my Command Prompt the error message is red as follows: "09:28:30.568Z :client\_tcp\_transport :47 \[NODE-OPCUA-E05\] this transport protocol is not suppor…

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## [Trying to use Admin Http API to install a module from github](https://discourse.nodered.org/t/trying-to-use-admin-http-api-to-install-a-module-from-github/59595)

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**Author:** [@davec1001](https://discourse.nodered.org/u/davec1001)\
**Replies:** 2\
**Last updated:** [9 March 2022 14:20 UTC](https://discourse.nodered.org/t/trying-to-use-admin-http-api-to-install-a-module-from-github/59595 "2022-03-09T14:20:44Z")

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Hi, I am 'posting' this to http://127.0.0.1:1880/nodes msg.payload = { "module" : "https://github.com/davidcreager/node-red-contrib-denonsocket.git" } and receiving this response {"code":404,"message":"Module not …

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## [Room Occupancy Using Motion and Contact Sensors](https://discourse.nodered.org/t/room-occupancy-using-motion-and-contact-sensors/59556)

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**Author:** [@rebel102285](https://discourse.nodered.org/u/rebel102285)\
**Replies:** 9\
**Last updated:** [9 March 2022 14:11 UTC](https://discourse.nodered.org/t/room-occupancy-using-motion-and-contact-sensors/59556 "2022-03-09T14:11:29Z")

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Really struggling with what I feel should be a simple flow but for some reason no matter what I try I cannot seem to get the flow to run the way I want. Attempting to build a presence detection for rooms based on Motion…

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## [Publishing Foto from ESP32Cam to Dashboard via mqtt](https://discourse.nodered.org/t/publishing-foto-from-esp32cam-to-dashboard-via-mqtt/59594)

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**Author:** [@maxmueller50](https://discourse.nodered.org/u/maxmueller50)\
**Replies:** 0\
**Last updated:** [9 March 2022 13:34 UTC](https://discourse.nodered.org/t/publishing-foto-from-esp32cam-to-dashboard-via-mqtt/59594 "2022-03-09T13:34:04Z")

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Hi what is wrong on my flow??? { "id": "1e03ce048d71e10b", "type": "ui\_template", "z": "fcb20266.ce938", "group": "", "name": "show image", "order": 4, "width…

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## [Different priorites for toggling devices on or off](https://discourse.nodered.org/t/different-priorites-for-toggling-devices-on-or-off/59593)

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**Author:** [@jesjimher](https://discourse.nodered.org/u/jesjimher)\
**Replies:** 1\
**Last updated:** [9 March 2022 13:40 UTC](https://discourse.nodered.org/t/different-priorites-for-toggling-devices-on-or-off/59593 "2022-03-09T13:40:39Z")

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Hi, I'm trying to achieve something that I think should be pretty common, but haven't found how to implement it without resorting to custom coding, and I'd rather not reinvent the wheel if possible. I've tried searching …

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## [Show data on ui-table coming from SQL database](https://discourse.nodered.org/t/show-data-on-ui-table-coming-from-sql-database/59573)

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**Author:** [@QGIO](https://discourse.nodered.org/u/QGIO)\
**Replies:** 6\
**Last updated:** [9 March 2022 11:50 UTC](https://discourse.nodered.org/t/show-data-on-ui-table-coming-from-sql-database/59573 "2022-03-09T11:50:41Z")

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Hello, I'm new in node-red and javascript. I have created a flow able to make a connection to a SQL database and select the first row of a specific table. \</\> I correctly see in the payload data of the first row of…

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## [Create decimal value](https://discourse.nodered.org/t/create-decimal-value/59580)

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**Author:** [@Espene](https://discourse.nodered.org/u/Espene)\
**Replies:** 5\
**Last updated:** [9 March 2022 11:48 UTC](https://discourse.nodered.org/t/create-decimal-value/59580 "2022-03-09T11:48:32Z")

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HI I am receiving av value from a temp sensor in the range from 0 to 400. I need to create a desimal value like this, 0 to 0.0 and 400 to 40.0 How can i do this?

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## [Adding Padding to ui-textbox](https://discourse.nodered.org/t/adding-padding-to-ui-textbox/59565)

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**Author:** [@Ganesh](https://discourse.nodered.org/u/Ganesh)\
**Replies:** 4\
**Last updated:** [9 March 2022 11:45 UTC](https://discourse.nodered.org/t/adding-padding-to-ui-textbox/59565 "2022-03-09T11:45:39Z")

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Hi On my dashboard screen I have multiple UI-Textboxes, I want to give padding to a one UI-Textbox out of multiple UI-Textbox , is there a way to do that , I have tried using Group padding setting in Site but it applie…

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## [Error: ENOENT: no such file or directory, open ‘/data/package.json’](https://discourse.nodered.org/t/error-enoent-no-such-file-or-directory-open-data-package-json/59582)

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**Author:** [@Utkarsh](https://discourse.nodered.org/u/Utkarsh)\
**Replies:** 0\
**Last updated:** [9 March 2022 11:16 UTC](https://discourse.nodered.org/t/error-enoent-no-such-file-or-directory-open-data-package-json/59582 "2022-03-09T11:16:07Z")

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Hello, I am trying to run Node-red using Docker. My Dockerfile is as follows: FROM nodered/node-red:latest-12-minimal COPY settings.js /data/ USER root RUN chown -R node-red:root /data USER node-red RUN npm install I…

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## [Shopping Cart Using NodeRed and Hugo](https://discourse.nodered.org/t/shopping-cart-using-nodered-and-hugo/59562)

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**Author:** [@nodeautomata](https://discourse.nodered.org/u/nodeautomata)\
**Replies:** 3\
**Last updated:** [9 March 2022 10:09 UTC](https://discourse.nodered.org/t/shopping-cart-using-nodered-and-hugo/59562 "2022-03-09T10:09:36Z")

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I started hating shopping carts. Endless updates which I have no control over breaking things. Back ends which scare clients and little children. Lack of control. Paid modules for anything other than minimal functi…

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## [MODBUS TCP over ETHERTNET cable](https://discourse.nodered.org/t/modbus-tcp-over-ethertnet-cable/59566)

<div class="topic-metadata">

**Author:** [@Milanovic](https://discourse.nodered.org/u/Milanovic)\
**Replies:** 2\
**Last updated:** [9 March 2022 09:01 UTC](https://discourse.nodered.org/t/modbus-tcp-over-ethertnet-cable/59566 "2022-03-09T09:01:16Z")

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Hi I want to read some Modbus registers but not over the wifi, over a ethernet cable. How can I do that? I have already a script for Modbus reading over wifi, do I need other settings? \[{"id":"c659bcf3dcb7a08e","type"…

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## [Lost Connection to Server Reconnecting](https://discourse.nodered.org/t/lost-connection-to-server-reconnecting/59522)

<div class="topic-metadata">

**Author:** [@ALPF5555](https://discourse.nodered.org/u/ALPF5555)\
**Replies:** 12\
**Last updated:** [9 March 2022 08:57 UTC](https://discourse.nodered.org/t/lost-connection-to-server-reconnecting/59522 "2022-03-09T08:57:14Z")

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I am not sure if anyone can help or not I am running Node Red Version 2.2.2 and running a simple big timer to turn lights on and off. Recently I find that the garden lights turn off after 37 minutes and the back on then …

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## [Dashboard not installing correctly](https://discourse.nodered.org/t/dashboard-not-installing-correctly/59551)

<div class="topic-metadata">

**Author:** [@WSchneider2](https://discourse.nodered.org/u/WSchneider2)\
**Replies:** 11\
**Last updated:** [9 March 2022 07:05 UTC](https://discourse.nodered.org/t/dashboard-not-installing-correctly/59551 "2022-03-09T07:05:56Z")

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Please excuse my ignorance as I am very new to the Node red and Raspberry pi's in general. I can ping google.com so I know that I am connected to the internet. The error the I am getting is as follows: npm ERR! Error …

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