# Latest

**URL:** https://discourse.nodered.org/latest.md?page=236

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

**Page:** 237

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## [How can I test for any text received?](https://discourse.nodered.org/t/how-can-i-test-for-any-text-received/85334)

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**Author:** [@questuk](https://discourse.nodered.org/u/questuk)\
**Replies:** 4\
**Last updated:** [8 February 2024 18:51 UTC](https://discourse.nodered.org/t/how-can-i-test-for-any-text-received/85334 "2024-02-08T18:51:02Z")

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Hi, I want to test for any text received in my function, this will then turn on a relay until no text received. I tried below, but does not work. What do I need to put in the if (msg.payload === "") part to match any …

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## [Unable to show labels on bar chart](https://discourse.nodered.org/t/unable-to-show-labels-on-bar-chart/84933)

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**Author:** [@FeliceM](https://discourse.nodered.org/u/FeliceM)\
**Replies:** 4\
**Last updated:** [8 February 2024 18:30 UTC](https://discourse.nodered.org/t/unable-to-show-labels-on-bar-chart/84933 "2024-02-08T18:30:44Z")

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With this function I read data from a txt file. Because there may be more lines of data for the same month, the function will use the last one for each month. // Function to process load shedding data const processLast…

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## [How to calculate diff and sum of dates on Node-RED?](https://discourse.nodered.org/t/how-to-calculate-diff-and-sum-of-dates-on-node-red/85129)

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**Author:** [@ppennachi](https://discourse.nodered.org/u/ppennachi)\
**Replies:** 4\
**Last updated:** [8 February 2024 18:26 UTC](https://discourse.nodered.org/t/how-to-calculate-diff-and-sum-of-dates-on-node-red/85129 "2024-02-08T18:26:03Z")

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Hi guys, how are you? Guys, I need some help. I'm working on an application, where the user enters two dates through two date pickers because I use these dates as parameters to perform a query. The need now arose to c…

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## [Bandwith Consumptions when doing development through the tunnel](https://discourse.nodered.org/t/bandwith-consumptions-when-doing-development-through-the-tunnel/85309)

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**Author:** [@Anmirazik](https://discourse.nodered.org/u/Anmirazik)\
**Replies:** 6\
**Last updated:** [8 February 2024 15:36 UTC](https://discourse.nodered.org/t/bandwith-consumptions-when-doing-development-through-the-tunnel/85309 "2024-02-08T15:36:20Z")

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Hello , just wanted to know , does the flowfuse device agent consumes a lot of bandwith when doing development through the tunnel ? My data quota seems to get quickly depleted ever since I started to do development throu…

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## [Connecting to Cognex 3D Scanner](https://discourse.nodered.org/t/connecting-to-cognex-3d-scanner/85322)

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**Author:** [@ab.ting](https://discourse.nodered.org/u/ab.ting)\
**Replies:** 1\
**Last updated:** [8 February 2024 13:25 UTC](https://discourse.nodered.org/t/connecting-to-cognex-3d-scanner/85322 "2024-02-08T13:25:10Z")

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I am trying to take an output from a Cognex 3D-L4100 scanner and parse it through a Node-RED flow to an HTTP response node. The debug node shows the response output, however the HTTP node shows a "No response object" mes…

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## [Wanting to get involved in "Robotics" any recommendation?](https://discourse.nodered.org/t/wanting-to-get-involved-in-robotics-any-recommendation/85089)

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**Author:** [@damica51](https://discourse.nodered.org/u/damica51)\
**Replies:** 16\
**Last updated:** [8 February 2024 13:18 UTC](https://discourse.nodered.org/t/wanting-to-get-involved-in-robotics-any-recommendation/85089 "2024-02-08T13:18:59Z")

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Can anybody recommend some type of a beginning robitics kit? From what I read it seems theat C++ would be the best language to learn if you are going to program advanced programs, it this correct? Any information will h…

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## [Go to the back folder](https://discourse.nodered.org/t/go-to-the-back-folder/85313)

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**Author:** [@MA.ING](https://discourse.nodered.org/u/MA.ING)\
**Replies:** 6\
**Last updated:** [8 February 2024 11:37 UTC](https://discourse.nodered.org/t/go-to-the-back-folder/85313 "2024-02-08T11:37:25Z")

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Hi, Im trying to go to the back folder but i didnt find the way to do Example, i have "D:\\MA.ING\\NODE\\TEST\\2024" and i want to go one folder back to: "D:\\MA.ING\\NODE\\TEST" I tryed spliting and rejoining but nothing wo…

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## [Dashboard 2 template vertical slider height](https://discourse.nodered.org/t/dashboard-2-template-vertical-slider-height/85233)

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**Author:** [@RedTom](https://discourse.nodered.org/u/RedTom)\
**Replies:** 6\
**Last updated:** [8 February 2024 11:34 UTC](https://discourse.nodered.org/t/dashboard-2-template-vertical-slider-height/85233 "2024-02-08T11:34:22Z")

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Hi, I am new to html,css and javascript programming (only did some c- or c++ programming). I try to make some tests with an ui template that I want to use to control shutters. I want to reduce the height of the verti…

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## [Serial nodes can be deactivated if not used in a given configuration](https://discourse.nodered.org/t/serial-nodes-can-be-deactivated-if-not-used-in-a-given-configuration/85315)

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**Author:** [@Jean-Luc](https://discourse.nodered.org/u/Jean-Luc)\
**Replies:** 9\
**Last updated:** [8 February 2024 11:15 UTC](https://discourse.nodered.org/t/serial-nodes-can-be-deactivated-if-not-used-in-a-given-configuration/85315 "2024-02-08T11:15:15Z")

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Hello everyone. I have several serial nodes in my flow. Depending on the user's hardware configuration, not all of them are used. I would like to be able to deactivate them, but I understand that NR loads them as soon a…

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## [Help with writing files](https://discourse.nodered.org/t/help-with-writing-files/85314)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 8\
**Last updated:** [8 February 2024 09:27 UTC](https://discourse.nodered.org/t/help-with-writing-files/85314 "2024-02-08T09:27:44Z")

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I have a "config" file that slowly is growing. This is it: {"1":{"number":0},"2":{"number":1},"3":{"number":1},"4":{"number":0},"5":{"number":1},"6":{"number":0},"7":{"number":0},"8":{"number":0},"9":{"number":1},"10":…

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## [Websocket connected and disconnected](https://discourse.nodered.org/t/websocket-connected-and-disconnected/85206)

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**Author:** [@Dr\_Phil](https://discourse.nodered.org/u/Dr_Phil)\
**Replies:** 16\
**Last updated:** [8 February 2024 08:05 UTC](https://discourse.nodered.org/t/websocket-connected-and-disconnected/85206 "2024-02-08T08:05:00Z")

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I'm using Websocket in and out and they work fine. I need to know if a Client is connected or disconnected and whilst this is shown there is no msg available. There is an alternative node: that provides msg.connect…

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## [Stop the execution of a Function for 30 seconds after Event](https://discourse.nodered.org/t/stop-the-execution-of-a-function-for-30-seconds-after-event/85296)

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**Author:** [@Andi](https://discourse.nodered.org/u/Andi)\
**Replies:** 9\
**Last updated:** [8 February 2024 07:31 UTC](https://discourse.nodered.org/t/stop-the-execution-of-a-function-for-30-seconds-after-event/85296 "2024-02-08T07:31:10Z")

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Hi, I have a Flow where I Monitor my pv. The pv Sends it's data every second. If the grid feed is greater than x for 5 seconds, I Set a gpio pin to high. If I buy from the grid for more than 3 seconds the pin gets LOW. …

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## [How to change type data word to float?](https://discourse.nodered.org/t/how-to-change-type-data-word-to-float/85279)

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**Author:** [@Sobri](https://discourse.nodered.org/u/Sobri)\
**Replies:** 15\
**Last updated:** [8 February 2024 04:10 UTC](https://discourse.nodered.org/t/how-to-change-type-data-word-to-float/85279 "2024-02-08T04:10:43Z")

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I have successfully connected Mitsubishi PLC type Q to GX Work 2 and to node red using MC Read, the problem is that the output of MC Read for the feed address and speed is word data type, while for temperature the data t…

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## [Unexplained Node-Red Exception](https://discourse.nodered.org/t/unexplained-node-red-exception/85304)

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**Author:** [@innoagg](https://discourse.nodered.org/u/innoagg)\
**Replies:** 2\
**Last updated:** [7 February 2024 22:29 UTC](https://discourse.nodered.org/t/unexplained-node-red-exception/85304 "2024-02-07T22:29:08Z")

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Node-Red will unexpectedly stop with the following log entry: Trace is enabled and no preceding activity coincides with the exception. In other words, the flow is idle before the error occurs. I would expect debug i…

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## ["I don't need to protect my system on the Internet, it isn't valuable" - If you think that, please read](https://discourse.nodered.org/t/i-dont-need-to-protect-my-system-on-the-internet-it-isnt-valuable-if-you-think-that-please-read/85293)

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**Author:** [@TotallyInformation](https://discourse.nodered.org/u/TotallyInformation)\
**Replies:** 4\
**Last updated:** [7 February 2024 21:09 UTC](https://discourse.nodered.org/t/i-dont-need-to-protect-my-system-on-the-internet-it-isnt-valuable-if-you-think-that-please-read/85293 "2024-02-07T21:09:13Z")

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Please note this sombre warning from a major security vendor in response to the recent botnet attack that used SMART TOOTHBRUSHES. If a toothbrush can do this, your Node-RED system certainly can. “Every device that is …

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## [AES70/OCA(open control architecture) node](https://discourse.nodered.org/t/aes70-oca-open-control-architecture-node/85301)

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**Author:** [@5UP3RR3D](https://discourse.nodered.org/u/5UP3RR3D)\
**Replies:** 0\
**Last updated:** [7 February 2024 20:10 UTC](https://discourse.nodered.org/t/aes70-oca-open-control-architecture-node/85301 "2024-02-07T20:10:29Z")

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Hi folks, has anyone built a AES70/OCA node yet? I'm experimenting with the node.js version of a AES70 project - GitHub - DeutscheSoft/AES70.js: A controller library implementing the AES70 standard but my programming s…

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## [Node red dashboard UI table](https://discourse.nodered.org/t/node-red-dashboard-ui-table/85299)

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**Author:** [@Nilava1992](https://discourse.nodered.org/u/Nilava1992)\
**Replies:** 2\
**Last updated:** [7 February 2024 19:53 UTC](https://discourse.nodered.org/t/node-red-dashboard-ui-table/85299 "2024-02-07T19:53:10Z")

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Hi all, I have a simple ui\_table in node red dashboard. The table may contain large number of rows. I want to add 2 buttons in that dashboard to scroll up and scroll down through the table. Is there any solution for this…

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## [Updating to a new version of NR does not work with command](https://discourse.nodered.org/t/updating-to-a-new-version-of-nr-does-not-work-with-command/85298)

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**Author:** [@SuperNinja](https://discourse.nodered.org/u/SuperNinja)\
**Replies:** 2\
**Last updated:** [7 February 2024 18:23 UTC](https://discourse.nodered.org/t/updating-to-a-new-version-of-nr-does-not-work-with-command/85298 "2024-02-07T18:23:40Z")

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I made this topic a while ago: https://discourse.nodered.org/t/edit-displays-if-a-new-node-red-update-is-available-online-and-update-it-from-the-dashboard/30061 to display if a new version of NR was online AND to updat…

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## [Help with pressing a button on a web form (http GET)](https://discourse.nodered.org/t/help-with-pressing-a-button-on-a-web-form-http-get/85130)

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**Author:** [@xyl](https://discourse.nodered.org/u/xyl)\
**Replies:** 4\
**Last updated:** [7 February 2024 16:19 UTC](https://discourse.nodered.org/t/help-with-pressing-a-button-on-a-web-form-http-get/85130 "2024-02-07T16:19:12Z")

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Hello, and thank you for looking! Big Picture I have an ESP8266 connected to my heat pump so I can control it over MQTT. Occasionally, it disconnects from the MQTT server, and the fix is to reboot the device. It serve…

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## [Set max value in “VProgressCircular” (ui-template)](https://discourse.nodered.org/t/set-max-value-in-vprogresscircular-ui-template/85275)

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**Author:** [@MecatronicaMADE](https://discourse.nodered.org/u/MecatronicaMADE)\
**Replies:** 2\
**Last updated:** [7 February 2024 15:00 UTC](https://discourse.nodered.org/t/set-max-value-in-vprogresscircular-ui-template/85275 "2024-02-07T15:00:59Z")

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Hi, Is there any way to set max value in “VProgressCircular” vuetify component, I’ve been learning about how to use vuetify components with ui-template node of Dashboard 2. In the API there is a way to set max value i…

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## [Unable to start node-red after attempted upgrade - Cannot find module 'node:dns'](https://discourse.nodered.org/t/unable-to-start-node-red-after-attempted-upgrade-cannot-find-module-node-dns/85277)

<div class="topic-metadata">

**Author:** [@Alekeep](https://discourse.nodered.org/u/Alekeep)\
**Replies:** 9\
**Last updated:** [7 February 2024 14:49 UTC](https://discourse.nodered.org/t/unable-to-start-node-red-after-attempted-upgrade-cannot-find-module-node-dns/85277 "2024-02-07T14:49:49Z")

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Starting a new project so figured it would be good to start with the latest release of node-red. Per the nodered.org site, I ran this from the Windows command prompt thinking it would do the trick: npm install -g --unsa…

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## [Text bug in node red design?](https://discourse.nodered.org/t/text-bug-in-node-red-design/85292)

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**Author:** [@znetsixe](https://discourse.nodered.org/u/znetsixe)\
**Replies:** 4\
**Last updated:** [7 February 2024 13:41 UTC](https://discourse.nodered.org/t/text-bug-in-node-red-design/85292 "2024-02-07T13:41:44Z")

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Been a while. Im exerpiencing this issue in node red : My code in the node is : module.exports = function (RED) { function rotating\_machine(config) { //create node RED.nodes.createNode(this, config); …

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## [Blockly help required](https://discourse.nodered.org/t/blockly-help-required/85190)

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**Author:** [@magicman](https://discourse.nodered.org/u/magicman)\
**Replies:** 19\
**Last updated:** [7 February 2024 13:09 UTC](https://discourse.nodered.org/t/blockly-help-required/85190 "2024-02-07T13:09:55Z")

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Hi, I am using blockly for the first time and struggling..i wish to create a statement of.. if msg.stoptimer =" stop" then .......but cannot work out which blockly process to go through. any help would be appreciated t…

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## [Global Var in JSON](https://discourse.nodered.org/t/global-var-in-json/85286)

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**Author:** [@gerand](https://discourse.nodered.org/u/gerand)\
**Replies:** 4\
**Last updated:** [7 February 2024 10:50 UTC](https://discourse.nodered.org/t/global-var-in-json/85286 "2024-02-07T10:50:01Z")

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Hello, I would like to replace the injection nodes with a slider. To do this, I created a global variable “Slider”. How can I replace this with the fixed number 50 in JSON? I wanted to change this: to this: { "…

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## [Xlsx file to json using function](https://discourse.nodered.org/t/xlsx-file-to-json-using-function/85254)

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**Author:** [@hbadshahp](https://discourse.nodered.org/u/hbadshahp)\
**Replies:** 4\
**Last updated:** [7 February 2024 09:31 UTC](https://discourse.nodered.org/t/xlsx-file-to-json-using-function/85254 "2024-02-07T09:31:28Z")

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Hii everyone, I am new to NodeRed. I want to iterate through the Row whose first column is matching with my Input. Shall writing function for these is good choice. flows.json (1.6 KB)

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## [Issues installing node-red core](https://discourse.nodered.org/t/issues-installing-node-red-core/85202)

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**Author:** [@dnguyen01123](https://discourse.nodered.org/u/dnguyen01123)\
**Replies:** 4\
**Last updated:** [7 February 2024 09:13 UTC](https://discourse.nodered.org/t/issues-installing-node-red-core/85202 "2024-02-07T09:13:36Z")

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I've tried various ways to install node-red on my Raspberry PI 4 running Debian It doesn't seem to install the core when I run the command line script bash \<(curl -sL https://raw.githubusercontent.com/node-red/linux-in…

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## [🎉 Node-RED 3.1.4 released](https://discourse.nodered.org/t/node-red-3-1-4-released/85263)

<div class="topic-metadata">

**Author:** [@knolleary](https://discourse.nodered.org/u/knolleary)\
**Replies:** 4\
**Last updated:** [7 February 2024 08:41 UTC](https://discourse.nodered.org/t/node-red-3-1-4-released/85263 "2024-02-07T08:41:59Z")

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Node-RED 3.1.4 is now available. This is mostly a maintenance release with lots of fixes for issues reported since our last release. There are a couple enhancements thrown in for good measure - not something we typical…

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## [Can't set upstream branch to github on Raspberry Pi](https://discourse.nodered.org/t/cant-set-upstream-branch-to-github-on-raspberry-pi/85281)

<div class="topic-metadata">

**Author:** [@basti188bu](https://discourse.nodered.org/u/basti188bu)\
**Replies:** 0\
**Last updated:** [7 February 2024 07:22 UTC](https://discourse.nodered.org/t/cant-set-upstream-branch-to-github-on-raspberry-pi/85281 "2024-02-07T07:22:58Z")

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Hello, i'm trying to connect node-red on my RaspberryPi with Github, but it doesn't work as expected. I generate a ssh-key in Node-Red and add it to GitHub Repository under Settings -\> Deploy Keys. I set up the right …

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## [Can I have a delay / sleep inside Function node](https://discourse.nodered.org/t/can-i-have-a-delay-sleep-inside-function-node/3101)

<div class="topic-metadata">

**Author:** [@cymplecy](https://discourse.nodered.org/u/cymplecy)\
**Replies:** 34\
**Last updated:** [7 February 2024 06:39 UTC](https://discourse.nodered.org/t/can-i-have-a-delay-sleep-inside-function-node/3101 "2024-02-07T06:39:33Z")

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I'm pretty certain that the answer is going to be no but can I do something in a function node - wait a bit - do something else? or do I need to have two function nodes with a Delay node in-between them?

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## [Using template node with if else condition](https://discourse.nodered.org/t/using-template-node-with-if-else-condition/85176)

<div class="topic-metadata">

**Author:** [@RudolfTheRedNode](https://discourse.nodered.org/u/RudolfTheRedNode)\
**Replies:** 10\
**Last updated:** [7 February 2024 03:29 UTC](https://discourse.nodered.org/t/using-template-node-with-if-else-condition/85176 "2024-02-07T03:29:08Z")

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Hi All, I am developing a dashboard, but I want to hide the image in dashboard that is why I need to come up with this program that can hide the image using template node. Shown below is my code inside template node. B…

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