# Latest

**URL:** https://discourse.nodered.org/latest.md?page=106

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

**Page:** 107

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## [Shelly integration & MQTT (via MacBook)](https://discourse.nodered.org/t/shelly-integration-mqtt-via-macbook/94672)

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**Author:** [@onit](https://discourse.nodered.org/u/onit)\
**Replies:** 11\
**Last updated:** [23 January 2025 17:21 UTC](https://discourse.nodered.org/t/shelly-integration-mqtt-via-macbook/94672 "2025-01-23T17:21:25Z")

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Hey Node RED community. I'm on a beginners level using Node RED to monitor and control Shelly devices. My setup at the moment is a Shelly Plus 1 which is connected to my network and I was setting up Node RED on my MacB…

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## [Automate updating nodes to the Flow Library (updated with XonSh)](https://discourse.nodered.org/t/automate-updating-nodes-to-the-flow-library-updated-with-xonsh/94792)

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**Author:** [@malys](https://discourse.nodered.org/u/malys)\
**Replies:** 4\
**Last updated:** [23 January 2025 12:51 UTC](https://discourse.nodered.org/t/automate-updating-nodes-to-the-flow-library-updated-with-xonsh/94792 "2025-01-23T12:51:25Z")

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Thanks to this post I have update the script to xonsh script import re COOKIES\_FILE="cookies.txt" MODULE\_NAME=$ARG1 #ex:@malysus/node-red-contrib-mqtt-auto touch @(COOKIES\_FILE) rm @(COOKIES\_FILE) # get the \_csrf tok…

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## [Error: Invalid property expression: zero-length in ui-chart](https://discourse.nodered.org/t/error-invalid-property-expression-zero-length-in-ui-chart/94760)

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**Author:** [@nygma2004](https://discourse.nodered.org/u/nygma2004)\
**Replies:** 2\
**Last updated:** [23 January 2025 12:14 UTC](https://discourse.nodered.org/t/error-invalid-property-expression-zero-length-in-ui-chart/94760 "2025-01-23T12:14:53Z")

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I upgraded to the 1.22 version and my ui-chart which is configured to bar is giving me this error: Error: Invalid property expression: zero-length. I am passing an array with object with x and y properties: Has anyt…

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## ["Please add some UI nodes to your flow and redeploy."](https://discourse.nodered.org/t/please-add-some-ui-nodes-to-your-flow-and-redeploy/94832)

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**Author:** [@rhhollin](https://discourse.nodered.org/u/rhhollin)\
**Replies:** 3\
**Last updated:** [23 January 2025 08:54 UTC](https://discourse.nodered.org/t/please-add-some-ui-nodes-to-your-flow-and-redeploy/94832 "2025-01-23T08:54:26Z")

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I am running node-red on Windows 10, connected to an Arduino UNO running pyfirmata. I just completed updating all of the node-red related software, including the new dashboard 2. In my flow I use buttons and LED's. I h…

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## [Push data to http requet](https://discourse.nodered.org/t/push-data-to-http-requet/94769)

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**Author:** [@JeremC82](https://discourse.nodered.org/u/JeremC82)\
**Replies:** 3\
**Last updated:** [23 January 2025 06:29 UTC](https://discourse.nodered.org/t/push-data-to-http-requet/94769 "2025-01-23T06:29:56Z")

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Hello everyone I am new to node red. I am looking for a way to send my payload in an http request address = http://192.168.2.160/solar?victronconsobat= paylod = (example 1966) so I want my http request to be http://1…

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## ["Serial Port Closed" when starting flow](https://discourse.nodered.org/t/serial-port-closed-when-starting-flow/94764)

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**Author:** [@rhhollin](https://discourse.nodered.org/u/rhhollin)\
**Replies:** 2\
**Last updated:** [22 January 2025 21:48 UTC](https://discourse.nodered.org/t/serial-port-closed-when-starting-flow/94764 "2025-01-22T21:48:57Z")

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I am running node-red v2.2.2 on a Windows 10 PC. The flow I am having issues with connects to an Arduino UNO via the node-red Arduino nodes. This particular flow worked OK for several months, but now is throwing an error…

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## [Tailscale webinar](https://discourse.nodered.org/t/tailscale-webinar/94829)

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**Author:** [@Paul-Reed](https://discourse.nodered.org/u/Paul-Reed)\
**Replies:** 0\
**Last updated:** [22 January 2025 16:58 UTC](https://discourse.nodered.org/t/tailscale-webinar/94829 "2025-01-22T16:58:32Z")

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Don't know how many users have followed @BartButenaers excellent blog about using Tailscale to increase the security of node-RED, but just seen that Tailscale are having a free webinar on 28th January, which may be of in…

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## [Homewizard P1 Meter - new\_user token API V2](https://discourse.nodered.org/t/homewizard-p1-meter-new-user-token-api-v2/94826)

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**Author:** [@Nice\_to\_have](https://discourse.nodered.org/u/Nice_to_have)\
**Replies:** 4\
**Last updated:** [22 January 2025 17:37 UTC](https://discourse.nodered.org/t/homewizard-p1-meter-new-user-token-api-v2/94826 "2025-01-22T17:37:08Z")

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Hi All, I recently got the Homewizard P1 Meter. Their documentation describes how to request a new user token, but i can not get it to work. I have my http post setup as: And this gives me: \[{"id":"a6d766c733…

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## [Node-red-node-annotate-image - using canvas](https://discourse.nodered.org/t/node-red-node-annotate-image-using-canvas/94653)

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**Author:** [@Sean-McG](https://discourse.nodered.org/u/Sean-McG)\
**Replies:** 5\
**Last updated:** [22 January 2025 14:34 UTC](https://discourse.nodered.org/t/node-red-node-annotate-image-using-canvas/94653 "2025-01-22T14:34:04Z")

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While playing with the Good-I-Deer nodes, I wanted to visualise the output, so I used the above node, however it is very slow (no offence @dceejay @knolleary ) :grinning: So with some help from chat-GPT I modified it to…

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## [Rule starts even if trigger doesnt change](https://discourse.nodered.org/t/rule-starts-even-if-trigger-doesnt-change/94801)

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**Author:** [@elBieneko](https://discourse.nodered.org/u/elBieneko)\
**Replies:** 7\
**Last updated:** [22 January 2025 14:29 UTC](https://discourse.nodered.org/t/rule-starts-even-if-trigger-doesnt-change/94801 "2025-01-22T14:29:45Z")

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Hello everyone, I'm very new to node red. I was running my smarthome on Openhab but now moving to Home Assistant. I was told to directly start creating rules with node red instead of the integrated rule engine. I have …

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## [Monitoring shelly-plug-s Version 2 on dashboard 2](https://discourse.nodered.org/t/monitoring-shelly-plug-s-version-2-on-dashboard-2/93823)

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**Author:** [@juntiedt](https://discourse.nodered.org/u/juntiedt)\
**Replies:** 1\
**Last updated:** [22 January 2025 11:51 UTC](https://discourse.nodered.org/t/monitoring-shelly-plug-s-version-2-on-dashboard-2/93823 "2025-01-22T11:51:17Z")

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I rewrote my monitoring for dashboard 2. I fixed the kWh calculation It uses my-first flow-on-all-RPIs which I posted earlier. Flow to big for preformated text: shell\_plug\_s.txt (42.4 KB)

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## [Button text alignment](https://discourse.nodered.org/t/button-text-alignment/94794)

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**Author:** [@Viriato](https://discourse.nodered.org/u/Viriato)\
**Replies:** 4\
**Last updated:** [22 January 2025 11:07 UTC](https://discourse.nodered.org/t/button-text-alignment/94794 "2025-01-22T11:07:26Z")

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Hello , I am using the Button with 3 lines text with different size , it works but by defautl the text is centered . It is possible to align the first line on left , second line in midle and line 3 on the right ? Tha…

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## [Travel Time by ask Google with http](https://discourse.nodered.org/t/travel-time-by-ask-google-with-http/94821)

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**Author:** [@domi](https://discourse.nodered.org/u/domi)\
**Replies:** 0\
**Last updated:** [22 January 2025 10:58 UTC](https://discourse.nodered.org/t/travel-time-by-ask-google-with-http/94821 "2025-01-22T10:58:08Z")

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Hy I trie to find out the tryffic on my route to work. For that i use the http request by google: https://maps.googleapis.com/maps/api/directions/json?origin="my place"&destination="my work"&KEY&departure\_time=now But…

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## [Select all nodes below mouse cursor postion](https://discourse.nodered.org/t/select-all-nodes-below-mouse-cursor-postion/94778)

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**Author:** [@cymplecy](https://discourse.nodered.org/u/cymplecy)\
**Replies:** 7\
**Last updated:** [22 January 2025 10:14 UTC](https://discourse.nodered.org/t/select-all-nodes-below-mouse-cursor-postion/94778 "2025-01-22T10:14:46Z")

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When you want to add some extra nodes to a busy tab of flows, you have to zoom out and then select from bottom right to top left of all the nodes you want to shift down. Then zoom back to normal and then move them A ni…

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## [How to install Node Red on Windows with the Windows Build Tools](https://discourse.nodered.org/t/how-to-install-node-red-on-windows-with-the-windows-build-tools/94816)

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**Author:** [@Technogeek](https://discourse.nodered.org/u/Technogeek)\
**Replies:** 0\
**Last updated:** [22 January 2025 08:56 UTC](https://discourse.nodered.org/t/how-to-install-node-red-on-windows-with-the-windows-build-tools/94816 "2025-01-22T08:56:45Z")

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I spent a couple of days trying to figure out what I need to install on Windows so that Nodes in Node Red that require the Windows Build Tools would install. I asked for help on this forum and got some great replies that…

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## [Dashboard 2.0 - UI Button Group - Border](https://discourse.nodered.org/t/dashboard-2-0-ui-button-group-border/94805)

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**Author:** [@mbreitner](https://discourse.nodered.org/u/mbreitner)\
**Replies:** 2\
**Last updated:** [22 January 2025 06:33 UTC](https://discourse.nodered.org/t/dashboard-2-0-ui-button-group-border/94805 "2025-01-22T06:33:42Z")

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Hi, does anybody know how it's possible to change a ui-button group border color? As you can see that in the picture the border color is from the theme but i need the rounded borders for these buttons in white? Than…

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## [Connecting Arduino to Pi 5 and Node Red](https://discourse.nodered.org/t/connecting-arduino-to-pi-5-and-node-red/94746)

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**Author:** [@Technogeek](https://discourse.nodered.org/u/Technogeek)\
**Replies:** 7\
**Last updated:** [22 January 2025 01:12 UTC](https://discourse.nodered.org/t/connecting-arduino-to-pi-5-and-node-red/94746 "2025-01-22T01:12:04Z")

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I'm very new to the Pi and Node Red and I've run into a perplexing problem with Node Red and an Arduino with Firmata installed. I'm always able to see the USB port in Terminal as /dev/ttyUSB0/ however I'm absolutely unab…

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## [Substituting a variable in the JSON object used to for an http call](https://discourse.nodered.org/t/substituting-a-variable-in-the-json-object-used-to-for-an-http-call/94774)

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**Author:** [@invictagunner](https://discourse.nodered.org/u/invictagunner)\
**Replies:** 21\
**Last updated:** [22 January 2025 00:54 UTC](https://discourse.nodered.org/t/substituting-a-variable-in-the-json-object-used-to-for-an-http-call/94774 "2025-01-22T00:54:30Z")

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I am setting up the parameters for a http request node. For example, msg.payload={ 'client\_id': 'xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx', 'grant\_type': 'refresh\_token', 'refresh\_token': currentRefreshToken }; Fo…

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## [Limit a hexadecimal number to 8-bits](https://discourse.nodered.org/t/limit-a-hexadecimal-number-to-8-bits/94795)

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**Author:** [@redhead](https://discourse.nodered.org/u/redhead)\
**Replies:** 2\
**Last updated:** [21 January 2025 18:35 UTC](https://discourse.nodered.org/t/limit-a-hexadecimal-number-to-8-bits/94795 "2025-01-21T18:35:31Z")

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I'm working on a serial interface. The serial packet includes the checksum. The checksum is limited to 8-bits (two-digit hexadecimal number). Any 8-bit math overflows are ignored. For example, if the checksum is hexadec…

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## [Cronplus AGAIN: System Time Change Detected](https://discourse.nodered.org/t/cronplus-again-system-time-change-detected/94702)

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**Author:** [@malys](https://discourse.nodered.org/u/malys)\
**Replies:** 8\
**Last updated:** [21 January 2025 18:22 UTC](https://discourse.nodered.org/t/cronplus-again-system-time-change-detected/94702 "2025-01-21T18:22:44Z")

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Many times, my system is very slow on startup and logs are filled with this message: "System Time Change Detected - refreshing schedules! If the system time was not changed then this typically occurs due to blocking cod…

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## [New node always Function 1](https://discourse.nodered.org/t/new-node-always-function-1/94790)

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**Author:** [@Giamma](https://discourse.nodered.org/u/Giamma)\
**Replies:** 4\
**Last updated:** [21 January 2025 16:36 UTC](https://discourse.nodered.org/t/new-node-always-function-1/94790 "2025-01-21T16:36:17Z")

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Hi, I'm not sure but from the v 4.0.8 when I create a new node function the number displayed is always 1. It's just my problem?

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## [I need to perform an arithmetic operation between 2 variables of the same modbus device](https://discourse.nodered.org/t/i-need-to-perform-an-arithmetic-operation-between-2-variables-of-the-same-modbus-device/94258)

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**Author:** [@Monobeto93](https://discourse.nodered.org/u/Monobeto93)\
**Replies:** 4\
**Last updated:** [21 January 2025 15:33 UTC](https://discourse.nodered.org/t/i-need-to-perform-an-arithmetic-operation-between-2-variables-of-the-same-modbus-device/94258 "2025-01-21T15:33:38Z")

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I have converted MOT32 to float using a function, but when I take these two converted values ​​to another function to perform the arithmetic operation, there is a conflict between the payloads. I would really appreciate …

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## [To Visualise my Value stored in MongoDB2 in Node on a Diagram](https://discourse.nodered.org/t/to-visualise-my-value-stored-in-mongodb2-in-node-on-a-diagram/94787)

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**Author:** [@wil](https://discourse.nodered.org/u/wil)\
**Replies:** 0\
**Last updated:** [21 January 2025 14:36 UTC](https://discourse.nodered.org/t/to-visualise-my-value-stored-in-mongodb2-in-node-on-a-diagram/94787 "2025-01-21T14:36:47Z")

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Hey in Node red I try to do a connection from MQTT-in Node to a Function and then to MongoDB2 in Node where I try to store the Value I had from MQTT with the Present Date. Now I only want to show all Values in my Databa…

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## [Install erroring out GLIBCXX\_3.4.26 not found](https://discourse.nodered.org/t/install-erroring-out-glibcxx-3-4-26-not-found/94432)

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**Author:** [@KSum](https://discourse.nodered.org/u/KSum)\
**Replies:** 32\
**Last updated:** [21 January 2025 11:43 UTC](https://discourse.nodered.org/t/install-erroring-out-glibcxx-3-4-26-not-found/94432 "2025-01-21T11:43:40Z")

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I am trying to install the latest version of Node-Red using the Raspberry Pi instructions using the command: bash \<(curl -sL https://raw.githubusercontent.com/node-red/linux-installers/master/deb/update-nodejs-and-noder…

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## [Developing on Windows but running production flows on Raspberry PI](https://discourse.nodered.org/t/developing-on-windows-but-running-production-flows-on-raspberry-pi/94775)

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**Author:** [@invictagunner](https://discourse.nodered.org/u/invictagunner)\
**Replies:** 2\
**Last updated:** [21 January 2025 11:30 UTC](https://discourse.nodered.org/t/developing-on-windows-but-running-production-flows-on-raspberry-pi/94775 "2025-01-21T11:30:05Z")

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I have purchased a Raspberry Pi 5 starter kit and a fully developed production home automation running on Windows 10. The Raspberry Pi will only be used for running the production flows. I have no prior experience of R…

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## [TypeError: Object.hasOwn is not a function - Unable to import flow](https://discourse.nodered.org/t/typeerror-object-hasown-is-not-a-function-unable-to-import-flow/94772)

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**Author:** [@MLFR\_IOT](https://discourse.nodered.org/u/MLFR_IOT)\
**Replies:** 7\
**Last updated:** [21 January 2025 09:43 UTC](https://discourse.nodered.org/t/typeerror-object-hasown-is-not-a-function-unable-to-import-flow/94772 "2025-01-21T09:43:35Z")

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Hello everyone, I can't import any flow on node red right now : This is not working with external flows but also with the same flow I just exported from that node red device. Has anyone ever had this problem ? Doe…

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## [Compatibility problem for Dashboard2.0 with "Switch"-nodes text label](https://discourse.nodered.org/t/compatibility-problem-for-dashboard2-0-with-switch-nodes-text-label/94771)

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**Author:** [@MrX](https://discourse.nodered.org/u/MrX)\
**Replies:** 2\
**Last updated:** [21 January 2025 09:36 UTC](https://discourse.nodered.org/t/compatibility-problem-for-dashboard2-0-with-switch-nodes-text-label/94771 "2025-01-21T09:36:27Z")

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For all my SONOFF switches (~30pcs) I use “Subflow” for simplicity and decrease the complexity for my Dashboard 1.0. The “Subflow” includes a lot of functions e.q. ON/OFF, Timer, detect “On/Offline” state, enable “Locked…

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## [Template widget shows nothing](https://discourse.nodered.org/t/template-widget-shows-nothing/94758)

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**Author:** [@Le-Ze](https://discourse.nodered.org/u/Le-Ze)\
**Replies:** 2\
**Last updated:** [20 January 2025 22:49 UTC](https://discourse.nodered.org/t/template-widget-shows-nothing/94758 "2025-01-20T22:49:27Z")

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Hi. I have mqtt in node. The function will process the output. msg.payload = { temperature: msg.payload.temperature, humidity: msg.payload.humidity }; return msg; Exit function. {"temperature":18.3,"humidity…

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## [Weird HIVE MQTT happenings. (possible crying WOLF) But important to read!](https://discourse.nodered.org/t/weird-hive-mqtt-happenings-possible-crying-wolf-but-important-to-read/94761)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 4\
**Last updated:** [20 January 2025 22:23 UTC](https://discourse.nodered.org/t/weird-hive-mqtt-happenings-possible-crying-wolf-but-important-to-read/94761 "2025-01-20T22:23:16Z")

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Folks, this has started recently I believe and only today I've actually caught the problem. I use HIVE MQTT for a project that now can't be used anyway. :frowning: In saying that, I will raise my hand and say it was …

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## [Amend REST API port](https://discourse.nodered.org/t/amend-rest-api-port/94757)

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**Author:** [@ScheepersJohan](https://discourse.nodered.org/u/ScheepersJohan)\
**Replies:** 3\
**Last updated:** [20 January 2025 18:35 UTC](https://discourse.nodered.org/t/amend-rest-api-port/94757 "2025-01-20T18:35:30Z")

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Is it possible to change the port for a rest API?

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