# Latest **URL:** https://discourse.nodered.org/latest.md?page=121 [Latest](https://discourse.nodered.org/latest.md) · [Categories](https://discourse.nodered.org/categories.md) · [Tags](https://discourse.nodered.org/tags.md) **Page:** 122 --- ## [How to trigger a dropdown for topologies without using the Inject node in Node-RED?](https://discourse.nodered.org/t/how-to-trigger-a-dropdown-for-topologies-without-using-the-inject-node-in-node-red/93726)
**Author:** [@Nandhini-Subramaniya](https://discourse.nodered.org/u/Nandhini-Subramaniya)\ **Replies:** 9\ **Last updated:** [9 December 2024 09:37 UTC](https://discourse.nodered.org/t/how-to-trigger-a-dropdown-for-topologies-without-using-the-inject-node-in-node-red/93726 "2024-12-09T09:37:12Z")
I have the following flow in Node-RED that dynamically loads topologies into a dropdown list: The flow starts with an Inject node that triggers a function to retrieve the topologies from the global context and display t… --- ## [Mqtt to node red dashbord led](https://discourse.nodered.org/t/mqtt-to-node-red-dashbord-led/93789)
**Author:** [@muhmmad](https://discourse.nodered.org/u/muhmmad)\ **Replies:** 8\ **Last updated:** [9 December 2024 09:31 UTC](https://discourse.nodered.org/t/mqtt-to-node-red-dashbord-led/93789 "2024-12-09T09:31:03Z")
I'm trying to send this data via mqtt { "LED": "true" } and I'm using node-red-contrib-ui-led : ui\_led, but I can't configure the led , any help with code and steps --- ## [@flowfuse/node-red-dashboard is missing](https://discourse.nodered.org/t/flowfuse-node-red-dashboard-is-missing/93784)
**Author:** [@crisconru](https://discourse.nodered.org/u/crisconru)\ **Replies:** 2\ **Last updated:** [8 December 2024 19:49 UTC](https://discourse.nodered.org/t/flowfuse-node-red-dashboard-is-missing/93784 "2024-12-08T19:49:26Z")
Hi all, maybe it's just me but I'm trying to install Dashboard 2 and it is not working. I attatch two screenshots --- ## [NPM Maintenance Window Notice](https://discourse.nodered.org/t/npm-maintenance-window-notice/93783)
**Author:** [@marcus-j-davies](https://discourse.nodered.org/u/marcus-j-davies)\ **Replies:** 1\ **Last updated:** [8 December 2024 18:54 UTC](https://discourse.nodered.org/t/npm-maintenance-window-notice/93783 "2024-12-08T18:54:42Z")
Notice If anyone is having problems installing Node RED, or additional Node modules. You may get a 404 error. This is expected, whilst NPM undergoes an upgrade schedule - this is outside of Node RED's control. Pleas… --- ## [\[ANNOUNCE\] node-red-semaphore-plus](https://discourse.nodered.org/t/announce-node-red-semaphore-plus/81246)
**Author:** [@marcus-j-davies](https://discourse.nodered.org/u/marcus-j-davies)\ **Replies:** 12\ **Last updated:** [8 December 2024 18:27 UTC](https://discourse.nodered.org/t/announce-node-red-semaphore-plus/81246 "2024-12-08T18:27:48Z")
So... Before I begin: I have seen so many flows/solutions/subflows that aim to bring semaphore features to a flow, but.... they all have 1 or more things in common. They are no longer maintained (and therefore have … --- ## [Kostal Piko 5.5](https://discourse.nodered.org/t/kostal-piko-5-5/93767)
**Author:** [@RienPutmans](https://discourse.nodered.org/u/RienPutmans)\ **Replies:** 3\ **Last updated:** [8 December 2024 14:53 UTC](https://discourse.nodered.org/t/kostal-piko-5-5/93767 "2024-12-08T14:53:57Z")
Hi, I'm really new here and just started with Nod-red. Is there someone who can give a complete designed flow to read registers from a Piko 5.5 inverter with a modbus tcp module. Kostal give this example \*Request tele… --- ## [Server Error 429](https://discourse.nodered.org/t/server-error-429/93777)
**Author:** [@marcus-j-davies](https://discourse.nodered.org/u/marcus-j-davies)\ **Replies:** 2\ **Last updated:** [8 December 2024 11:28 UTC](https://discourse.nodered.org/t/server-error-429/93777 "2024-12-08T11:28:13Z")
Either, I am a deranged forum user that hangs around like a weirdo, or my browser (Safari) has tourettes. But every so often, I get no styling/images/resources at all on the forum. Checking logs, I get error 429 - too … --- ## [Node-red container in docker: How do I get out of a Restart Loop?](https://discourse.nodered.org/t/node-red-container-in-docker-how-do-i-get-out-of-a-restart-loop/93774)
**Author:** [@ll135791](https://discourse.nodered.org/u/ll135791)\ **Replies:** 3\ **Last updated:** [8 December 2024 09:50 UTC](https://discourse.nodered.org/t/node-red-container-in-docker-how-do-i-get-out-of-a-restart-loop/93774 "2024-12-08T09:50:47Z")
I was configuring my node-red container to my mininet container both under the same docker, and when I went to change setting.json properties I believe I might have doubled a line that caused a syntax error to occur. Eve… --- ## [Scrape data from web page](https://discourse.nodered.org/t/scrape-data-from-web-page/93768)
**Author:** [@marco-dmaa](https://discourse.nodered.org/u/marco-dmaa)\ **Replies:** 1\ **Last updated:** [8 December 2024 09:27 UTC](https://discourse.nodered.org/t/scrape-data-from-web-page/93768 "2024-12-08T09:27:03Z")
Good evening! I've been trying to extract data from an HTML page for a week, but I just can't seem to do it... I need to extract a value, and this is the xpath from Chrome console: /html/body/section/md-content/div/div… --- ## [How to Resume All Functionality in Node-RED After a Restart?](https://discourse.nodered.org/t/how-to-resume-all-functionality-in-node-red-after-a-restart/93698)
**Author:** [@LoganathanSambath](https://discourse.nodered.org/u/LoganathanSambath)\ **Replies:** 19\ **Last updated:** [8 December 2024 09:00 UTC](https://discourse.nodered.org/t/how-to-resume-all-functionality-in-node-red-after-a-restart/93698 "2024-12-08T09:00:23Z")
I am facing an issue with session management in Node-RED. Here’s what happens: When a user logs in, the UI creates a session and stores it in the database with a defined expiration time. If Node-RED is not restarted, t… --- ## [Uibuilder Uib-element - with variable html id](https://discourse.nodered.org/t/uibuilder-uib-element-with-variable-html-id/93763)
**Author:** [@skytrackerdave](https://discourse.nodered.org/u/skytrackerdave)\ **Replies:** 2\ **Last updated:** [8 December 2024 05:45 UTC](https://discourse.nodered.org/t/uibuilder-uib-element-with-variable-html-id/93763 "2024-12-08T05:45:57Z")
I am interested in inserting a different id each time I insert a div using uib-element. To use one of the uibuilder examples; \
\Markdown Card\ \Dynamically added from a Node-RED/UIBUILDER no-code … --- ## [@omrid01/node-red-dashboard-2-table-tabulator - setting colors](https://discourse.nodered.org/t/omrid01-node-red-dashboard-2-table-tabulator-setting-colors/92989)
**Author:** [@PeterH](https://discourse.nodered.org/u/PeterH)\ **Replies:** 21\ **Last updated:** [7 December 2024 23:02 UTC](https://discourse.nodered.org/t/omrid01-node-red-dashboard-2-table-tabulator-setting-colors/92989 "2024-12-07T23:02:30Z")
I have been playing around with the @omrid01/node-red-dashboard-2-table-tabulator node to familiarize my self with it. I have used the examples which comes withe the node. Everything seem to work fine except setting/cha… --- ## [When using projects, changing settings.js to auto commit does not work](https://discourse.nodered.org/t/when-using-projects-changing-settings-js-to-auto-commit-does-not-work/93770)
**Author:** [@jmorris644](https://discourse.nodered.org/u/jmorris644)\ **Replies:** 0\ **Last updated:** [7 December 2024 22:09 UTC](https://discourse.nodered.org/t/when-using-projects-changing-settings-js-to-auto-commit-does-not-work/93770 "2024-12-07T22:09:14Z")
I tried changing the commit to "auto" in settings.js and then restarting node-red but that did not change the process to auto commit. FYI, I went into the node-red dir and edited .config.users.json and changed the proce… --- ## [Why does change node with set msg.payload to msg.payload solves unintended behavior?](https://discourse.nodered.org/t/why-does-change-node-with-set-msg-payload-to-msg-payload-solves-unintended-behavior/93715)
**Author:** [@moppelg](https://discourse.nodered.org/u/moppelg)\ **Replies:** 7\ **Last updated:** [7 December 2024 21:34 UTC](https://discourse.nodered.org/t/why-does-change-node-with-set-msg-payload-to-msg-payload-solves-unintended-behavior/93715 "2024-12-07T21:34:45Z")
Hello together, I had problems with the uiTable not updating automaticly the ui correctly (F5 required). The only difference to the working example was that I collected my message with the data manually in a function no… --- ## [Regarding ui base .js](https://discourse.nodered.org/t/regarding-ui-base-js/93750)
**Author:** [@Subavarsha](https://discourse.nodered.org/u/Subavarsha)\ **Replies:** 5\ **Last updated:** [7 December 2024 21:33 UTC](https://discourse.nodered.org/t/regarding-ui-base-js/93750 "2024-12-07T21:33:30Z")
Hi I am trying to build an application using nodered where there will be 4 user one is admin and other three are user1, user2, user3 . Admin will be maintaining records of these 3 user like how many times these users … --- ## [Problems scraping data from web page](https://discourse.nodered.org/t/problems-scraping-data-from-web-page/92445)
**Author:** [@marco-dmaa](https://discourse.nodered.org/u/marco-dmaa)\ **Replies:** 3\ **Last updated:** [7 December 2024 20:40 UTC](https://discourse.nodered.org/t/problems-scraping-data-from-web-page/92445 "2024-12-07T20:40:25Z")
Good evening, I have been trying for three days to retrieve data from an HTML page using the HTML node. Unfortunately, I am only able to partially extract the data. I would like to understand what I am doing wrong. Thi… --- ## [Does Node-RED flow execution run faster than debug or UI updates like counters?](https://discourse.nodered.org/t/does-node-red-flow-execution-run-faster-than-debug-or-ui-updates-like-counters/92629)
**Author:** [@flipzz](https://discourse.nodered.org/u/flipzz)\ **Replies:** 11\ **Last updated:** [7 December 2024 17:25 UTC](https://discourse.nodered.org/t/does-node-red-flow-execution-run-faster-than-debug-or-ui-updates-like-counters/92629 "2024-12-07T17:25:33Z")
In my Node-RED flow, I'm noticing that the execution seems to happen faster than what is shown in the UI, such as in the debug panel or flow dashboard. For example, in a delay node, the counter seems to count up to the m… --- ## [How to allow a message to pass through a Join node only when the contents have changed](https://discourse.nodered.org/t/how-to-allow-a-message-to-pass-through-a-join-node-only-when-the-contents-have-changed/93761)
**Author:** [@grant1](https://discourse.nodered.org/u/grant1)\ **Replies:** 2\ **Last updated:** [7 December 2024 16:39 UTC](https://discourse.nodered.org/t/how-to-allow-a-message-to-pass-through-a-join-node-only-when-the-contents-have-changed/93761 "2024-12-07T16:39:47Z")
I am rotating an object forward for n seconds and reverse for m seconds. n and m come from MQTT data. I have worked out everything (combining messages, javascript in function node, etc.), but I would like to adjust thi… --- ## [Node-red-contrib-modbus Help?](https://discourse.nodered.org/t/node-red-contrib-modbus-help/93716)
**Author:** [@Buzzylogic](https://discourse.nodered.org/u/Buzzylogic)\ **Replies:** 3\ **Last updated:** [7 December 2024 12:03 UTC](https://discourse.nodered.org/t/node-red-contrib-modbus-help/93716 "2024-12-07T12:03:53Z")
I'm using node-red-contrib-modbus to set speed and turn on/off a VFD drive over ethernet. I have a manual for the drive, but when I try to write a value to the address, it says "Error: Modbus exception 2: Illegal data ad… --- ## [Receive triggers from IFTT](https://discourse.nodered.org/t/receive-triggers-from-iftt/93753)
**Author:** [@k5map](https://discourse.nodered.org/u/k5map)\ **Replies:** 1\ **Last updated:** [7 December 2024 10:22 UTC](https://discourse.nodered.org/t/receive-triggers-from-iftt/93753 "2024-12-07T10:22:00Z")
Is there a way to receive a trigger event from IFTT to NR? If so, can you provide an example flow? --- ## [OAuth works for the admin flow editor but maybe not the node dashboard httpNodeAuth?](https://discourse.nodered.org/t/oauth-works-for-the-admin-flow-editor-but-maybe-not-the-node-dashboard-httpnodeauth/93695)
**Author:** [@HeneryH](https://discourse.nodered.org/u/HeneryH)\ **Replies:** 8\ **Last updated:** [7 December 2024 07:44 UTC](https://discourse.nodered.org/t/oauth-works-for-the-admin-flow-editor-but-maybe-not-the-node-dashboard-httpnodeauth/93695 "2024-12-07T07:44:38Z")
Is there really only a single hardcoded user available to protect the dashboard? HTTP Node security The routes exposed by the HTTP In nodes can be secured using basic authentication. The httpNodeAuth property in your… --- ## [Using NodeRED with the Grove-Base-Hat for raspberry pi](https://discourse.nodered.org/t/using-nodered-with-the-grove-base-hat-for-raspberry-pi/93712)
**Author:** [@rajsiyer](https://discourse.nodered.org/u/rajsiyer)\ **Replies:** 10\ **Last updated:** [7 December 2024 04:58 UTC](https://discourse.nodered.org/t/using-nodered-with-the-grove-base-hat-for-raspberry-pi/93712 "2024-12-07T04:58:32Z")
Hi, I am new to both NodeRED and raspberry pi. I'd been reading the excellent book by Taiji Hagino. He uses the node-red-contrib-grove-base-hat. Despite installing it from the palette manager, I am not getting it right. … --- ## [Everyone is away and alarm is disarmed](https://discourse.nodered.org/t/everyone-is-away-and-alarm-is-disarmed/93720)
**Author:** [@Node11](https://discourse.nodered.org/u/Node11)\ **Replies:** 7\ **Last updated:** [6 December 2024 21:13 UTC](https://discourse.nodered.org/t/everyone-is-away-and-alarm-is-disarmed/93720 "2024-12-06T21:13:36Z")
Hi, I'd like to have a flow that does the following: -when "device\_tracker.a" and "device\_tracker.b" are both away and: -when alarm\_control\_panel.alarm\_partition\_1 is disarmed then: -notify "mobile\_app\_iphone\_14" a… --- ## [Control Woodstove Blower](https://discourse.nodered.org/t/control-woodstove-blower/93743)
**Author:** [@DeckerJS](https://discourse.nodered.org/u/DeckerJS)\ **Replies:** 5\ **Last updated:** [7 December 2024 01:32 UTC](https://discourse.nodered.org/t/control-woodstove-blower/93743 "2024-12-07T01:32:36Z")
'''\[{"id":"c210e4047650ec50","type":"api-current-state","z":"34065289c6b1b6fb","name":"Livingroom Temperature \<= 75","server":"4a63ddf5.8fd424","version":3,"outputs":2,"halt\_if":"75","halt\_if\_type":"num","halt\_if\_compare… --- ## [Working with messages, objects to array, ui-table](https://discourse.nodered.org/t/working-with-messages-objects-to-array-ui-table/93744)
**Author:** [@cklc625](https://discourse.nodered.org/u/cklc625)\ **Replies:** 7\ **Last updated:** [6 December 2024 21:39 UTC](https://discourse.nodered.org/t/working-with-messages-objects-to-array-ui-table/93744 "2024-12-06T21:39:48Z")
I'm using node-red for quite a long time and did a lot of useful things with it. Due to the documentation, forum and provided info's I was able to solve problems on my own. It seems, that I reached my personal limits now… --- ## [How to disable the mouse wheel?](https://discourse.nodered.org/t/how-to-disable-the-mouse-wheel/93740)
**Author:** [@Artazis](https://discourse.nodered.org/u/Artazis)\ **Replies:** 2\ **Last updated:** [6 December 2024 21:24 UTC](https://discourse.nodered.org/t/how-to-disable-the-mouse-wheel/93740 "2024-12-06T21:24:33Z")
Hello, I have a page generated by Node-RED for managing my electric heating. I’m increasing the number of zones a bit to better manage my consumption. On this page, I have a lot of sliders (sliders) and the page is qui… --- ## [How to filter a long string that is split](https://discourse.nodered.org/t/how-to-filter-a-long-string-that-is-split/93737)
**Author:** [@KSO760](https://discourse.nodered.org/u/KSO760)\ **Replies:** 10\ **Last updated:** [6 December 2024 20:34 UTC](https://discourse.nodered.org/t/how-to-filter-a-long-string-that-is-split/93737 "2024-12-06T20:34:15Z")
I have a string from Brultech GEM that I can split with the & deliminator. n=00012915&m=5234702&wh\_1=153454.32&p\_1=3&wh\_2=14839.24&p\_2=20&wh\_3=46336.37&p\_3=0&wh\_4=134758.34&p\_4=11&wh\_5=161041.46&p\_5=0&wh\_6=121477.05&p\_6… --- ## [Node-red + MCP23017 (x5) slowing down](https://discourse.nodered.org/t/node-red-mcp23017-x5-slowing-down/93165)
**Author:** [@TadyTheFish](https://discourse.nodered.org/u/TadyTheFish)\ **Replies:** 52\ **Last updated:** [6 December 2024 20:15 UTC](https://discourse.nodered.org/t/node-red-mcp23017-x5-slowing-down/93165 "2024-12-06T20:15:46Z")
Hey So I'm facing a problem with a project. I made a board with 5 MCP23017 expander ICs and everything works. The problem I'm facing is that after a day of running Node Red starts to slow down, I can see in HTOP that th… --- ## [Inserting a time format to influxdb - 8:45:00](https://discourse.nodered.org/t/inserting-a-time-format-to-influxdb-800/93717)
**Author:** [@richiep](https://discourse.nodered.org/u/richiep)\ **Replies:** 5\ **Last updated:** [6 December 2024 19:52 UTC](https://discourse.nodered.org/t/inserting-a-time-format-to-influxdb-800/93717 "2024-12-06T19:52:00Z")
Hey All, I'm using the Hourglass Pallet to record how many hours I have a fire in my Rocket Mass Heater each day. At just before midnight I want to send the daily burn time to influxdb and graph it. I'm able to do thi… --- ## [Ui-template changes page dropdown](https://discourse.nodered.org/t/ui-template-changes-page-dropdown/93735)
**Author:** [@chuckf201](https://discourse.nodered.org/u/chuckf201)\ **Replies:** 1\ **Last updated:** [6 December 2024 19:49 UTC](https://discourse.nodered.org/t/ui-template-changes-page-dropdown/93735 "2024-12-06T19:49:54Z")
I consider the template node crucial to further my development efforts. Using google font examples https://developers.google.com/fonts/docs/getting\_started \