# Latest

**URL:** https://discourse.nodered.org/latest.md?page=564

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

**Page:** 565

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## [Node red iframe - vnc](https://discourse.nodered.org/t/node-red-iframe-vnc/63014)

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**Author:** [@RogierQ](https://discourse.nodered.org/u/RogierQ)\
**Replies:** 0\
**Last updated:** [24 May 2022 15:35 UTC](https://discourse.nodered.org/t/node-red-iframe-vnc/63014 "2022-05-24T15:35:04Z")

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I posted before about controlling my displayed webpage by mqtt. The solution was to use the iframe node. Now i finally got it working. ( i thought ) but it only displays the correct page in vnc. But if i look on the con…

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## [Codesys and Node-red on the same Raspi?](https://discourse.nodered.org/t/codesys-and-node-red-on-the-same-raspi/63007)

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**Author:** [@xavier98](https://discourse.nodered.org/u/xavier98)\
**Replies:** 3\
**Last updated:** [24 May 2022 14:31 UTC](https://discourse.nodered.org/t/codesys-and-node-red-on-the-same-raspi/63007 "2022-05-24T14:31:07Z")

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Hi all, I have a question. I have a raspberry with the codesys runtime. If I want to use some Raspi sensors with i2c bus, a simple way would be to read then with node-red and then send via OPC UA or Modbus to the codesy…

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## [I have issue when i connect MSSQL with Node Red](https://discourse.nodered.org/t/i-have-issue-when-i-connect-mssql-with-node-red/62691)

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**Author:** [@Fathi2022](https://discourse.nodered.org/u/Fathi2022)\
**Replies:** 77\
**Last updated:** [24 May 2022 14:15 UTC](https://discourse.nodered.org/t/i-have-issue-when-i-connect-mssql-with-node-red/62691 "2022-05-24T14:15:33Z")

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this eror message : 16/05/2022, 13:40:01node: MSSQLmsg : Object object class: undefined code: "EINSTLOOKUP" lineNumber: undefined message: "Failed to lookup instance on (localdb) - getaddrinfo ENOTFOUND (localdb)" …

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## [MSSQL node msg reading](https://discourse.nodered.org/t/mssql-node-msg-reading/63004)

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**Author:** [@noob69](https://discourse.nodered.org/u/noob69)\
**Replies:** 2\
**Last updated:** [24 May 2022 12:27 UTC](https://discourse.nodered.org/t/mssql-node-msg-reading/63004 "2022-05-24T12:27:28Z")

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Hi, I need to add a value to a table. So I've created MSSQL node and input my msg as following. INSERT INTO alert(email,alert,status,interval) VALUES('{{{msg.email}}}','time',1,10) But it output a blank instead of the…

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## [Remove / smoothen unrealistic item values which randomly appear](https://discourse.nodered.org/t/remove-smoothen-unrealistic-item-values-which-randomly-appear/62971)

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**Author:** [@binderth](https://discourse.nodered.org/u/binderth)\
**Replies:** 4\
**Last updated:** [24 May 2022 11:45 UTC](https://discourse.nodered.org/t/remove-smoothen-unrealistic-item-values-which-randomly-appear/62971 "2022-05-24T11:45:41Z")

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I can access my heating system via RS232 and it will spit out some sensors' data. So I wrote a python script, which reads the values out periodically and sends them via MQTT in a JSON. Nodered then analyzes the JSON and…

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## [433 MHz weather station sensors](https://discourse.nodered.org/t/433-mhz-weather-station-sensors/62974)

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**Author:** [@msillano](https://discourse.nodered.org/u/msillano)\
**Replies:** 0\
**Last updated:** [23 May 2022 16:32 UTC](https://discourse.nodered.org/t/433-mhz-weather-station-sensors/62974 "2022-05-23T16:32:04Z")

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A new flow '433 MKz gateway' is added to tuyaDAEMON (a IOT framework) to integrate in my node-red IOT applications more devices, like a 'weather station'. In the implementation I add some advanced meteo features: use of…

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## ['Meteo Utils' functions library (meteoUtils constructor)](https://discourse.nodered.org/t/meteo-utils-functions-library-meteoutils-constructor/62977)

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**Author:** [@msillano](https://discourse.nodered.org/u/msillano)\
**Replies:** 0\
**Last updated:** [23 May 2022 18:02 UTC](https://discourse.nodered.org/t/meteo-utils-functions-library-meteoutils-constructor/62977 "2022-05-23T18:02:50Z")

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Developping a module for my tuyaDAEMON project (an IOT framework), I developped a library that can be useful in many meteo node-red applications. This code "meteoUtils constructor" builds a global singleton object, usa…

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## [Obtaining 2 digit values from a string](https://discourse.nodered.org/t/obtaining-2-digit-values-from-a-string/62409)

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**Author:** [@Fulltopuk](https://discourse.nodered.org/u/Fulltopuk)\
**Replies:** 7\
**Last updated:** [24 May 2022 10:20 UTC](https://discourse.nodered.org/t/obtaining-2-digit-values-from-a-string/62409 "2022-05-24T10:20:51Z")

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Hi All I have created a Node which gets HTML from a Heatmiser controller to give me the output below:- \<html\> \<head\> \<meta http-equiv="Content-Type" content="text/html; charset=us-ascii"\> \<meta http-equiv="Content-Lang…

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## [The error: this cite can't be reached when download Node-red](https://discourse.nodered.org/t/the-error-this-cite-cant-be-reached-when-download-node-red/63000)

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**Author:** [@thanhbinh](https://discourse.nodered.org/u/thanhbinh)\
**Replies:** 0\
**Last updated:** [24 May 2022 09:47 UTC](https://discourse.nodered.org/t/the-error-this-cite-cant-be-reached-when-download-node-red/63000 "2022-05-24T09:47:53Z")

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Hello everyone, I'm a student currently. I have a problem. When I connect PC and module IOT2000 to open Node-red on a browser, it shows the error on the top. when I download directly from laptop and IOT module it shows…

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## [Passing arguments into a custom node](https://discourse.nodered.org/t/passing-arguments-into-a-custom-node/62990)

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**Author:** [@Vedant](https://discourse.nodered.org/u/Vedant)\
**Replies:** 5\
**Last updated:** [24 May 2022 08:51 UTC](https://discourse.nodered.org/t/passing-arguments-into-a-custom-node/62990 "2022-05-24T08:51:52Z")

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Hello Everyone! I am trying to customize the node that I created. Right now the inject node triggers the functionality i.e. passes the argument and the custom node that I created passes the results and errors to the debu…

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## [Use global variable in http request url](https://discourse.nodered.org/t/use-global-variable-in-http-request-url/62693)

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**Author:** [@Tiramisupxl](https://discourse.nodered.org/u/Tiramisupxl)\
**Replies:** 3\
**Last updated:** [24 May 2022 08:45 UTC](https://discourse.nodered.org/t/use-global-variable-in-http-request-url/62693 "2022-05-24T08:45:38Z")

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Is there possible use global variable in url of http request node. like: http:{{global.ip}}/tset And how to use variable in websocket url? If I have many flows and use the same websocket server, how to set different w…

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## [How to disable auth for a http-in node?](https://discourse.nodered.org/t/how-to-disable-auth-for-a-http-in-node/62842)

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**Author:** [@kastyan43](https://discourse.nodered.org/u/kastyan43)\
**Replies:** 6\
**Last updated:** [24 May 2022 08:07 UTC](https://discourse.nodered.org/t/how-to-disable-auth-for-a-http-in-node/62842 "2022-05-24T08:07:21Z")

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How i can disable authorization in use node "http-in"? I want to sent data to Node-Red use GET request.

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## [Initialize new Subflow in an existing flow using the Admin API Methods](https://discourse.nodered.org/t/initialize-new-subflow-in-an-existing-flow-using-the-admin-api-methods/62984)

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**Author:** [@azmed](https://discourse.nodered.org/u/azmed)\
**Replies:** 2\
**Last updated:** [24 May 2022 07:57 UTC](https://discourse.nodered.org/t/initialize-new-subflow-in-an-existing-flow-using-the-admin-api-methods/62984 "2022-05-24T07:57:28Z")

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Hi Guys, I would like to initialize a new subflow via the provided REST API (Admin API Methods). Therefore I want to update an existing flow. Is there any possibility to do that via the Rest API?

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## [Switch dashboard theme from dashboard toggle](https://discourse.nodered.org/t/switch-dashboard-theme-from-dashboard-toggle/62979)

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**Author:** [@edterbak](https://discourse.nodered.org/u/edterbak)\
**Replies:** 1\
**Last updated:** [24 May 2022 07:39 UTC](https://discourse.nodered.org/t/switch-dashboard-theme-from-dashboard-toggle/62979 "2022-05-24T07:39:22Z")

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Hi, I am a happy user of node red. I was wondering. would it be possible to change the Dashboard theme from within the dashboard? A toggle of some sort, pushing a certain payload. I read a lot about css, but I dont u…

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## [How to trigger flow when context value change](https://discourse.nodered.org/t/how-to-trigger-flow-when-context-value-change/62957)

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**Author:** [@HWeber](https://discourse.nodered.org/u/HWeber)\
**Replies:** 12\
**Last updated:** [24 May 2022 07:32 UTC](https://discourse.nodered.org/t/how-to-trigger-flow-when-context-value-change/62957 "2022-05-24T07:32:01Z")

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Hello There, I'm new to node red and I have a little problem whith my flow. I recover data from a S7- 1200 in order to create csv files. I was able to create this flow but there is still somethong missing. In order…

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## [Node-RED on Raspberry Pi OS x64 WORKS!](https://discourse.nodered.org/t/node-red-on-raspberry-pi-os-x64-works/60065)

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**Author:** [@Ricardo1982](https://discourse.nodered.org/u/Ricardo1982)\
**Replies:** 19\
**Last updated:** [24 May 2022 03:55 UTC](https://discourse.nodered.org/t/node-red-on-raspberry-pi-os-x64-works/60065 "2022-05-24T03:55:12Z")

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So I just installed the new Raspberry Pi OS x64 on my Raspberry Pi 3B+ and I'm surprised how good it's working already and how fast it is on my Pi 3B+, how cool is that? Okay you do have to install Node-RED manually but …

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## [Can turn fans on/off with specific Echo, can't adjust speed](https://discourse.nodered.org/t/can-turn-fans-on-off-with-specific-echo-cant-adjust-speed/62985)

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**Author:** [@Mebejedi](https://discourse.nodered.org/u/Mebejedi)\
**Replies:** 0\
**Last updated:** [24 May 2022 02:31 UTC](https://discourse.nodered.org/t/can-turn-fans-on-off-with-specific-echo-cant-adjust-speed/62985 "2022-05-24T02:31:07Z")

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So, a friend of mine helped me create a flow that would turn specific fans on/off depending on which Echo I speak to. Therefore, "Turn on fan" in living room turns on the living room fan. Anyways, it works great...but n…

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## [\[ANNOUNCE\] node-red-contrib-tank-volume: beta](https://discourse.nodered.org/t/announce-node-red-contrib-tank-volume-beta/47101)

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**Author:** [@BartButenaers](https://discourse.nodered.org/u/BartButenaers)\
**Replies:** 53\
**Last updated:** [24 May 2022 01:29 UTC](https://discourse.nodered.org/t/announce-node-red-contrib-tank-volume-beta/47101 "2022-05-24T01:29:18Z")

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Hi folks, The lady of the house asked me to measure the fluid level in some tanks at home: fuel oil, rain water, ... And she wants to know the partial filled volume of those tanks. Must admit that I already kept here …

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## [Using DOMParser in a function node?](https://discourse.nodered.org/t/using-domparser-in-a-function-node/62954)

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**Author:** [@dugite-code](https://discourse.nodered.org/u/dugite-code)\
**Replies:** 2\
**Last updated:** [24 May 2022 01:13 UTC](https://discourse.nodered.org/t/using-domparser-in-a-function-node/62954 "2022-05-24T01:13:29Z")

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I'm trying to use the xpath module in a function node by adding it into the function node setup. So far so good, the main issue I'm running into is how to parse the html string output from a HTTP request for use with the…

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## [Inject Dropdown node on web page refresh on Node-RED Dashboard](https://discourse.nodered.org/t/inject-dropdown-node-on-web-page-refresh-on-node-red-dashboard/62976)

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**Author:** [@Ganesh](https://discourse.nodered.org/u/Ganesh)\
**Replies:** 6\
**Last updated:** [23 May 2022 20:03 UTC](https://discourse.nodered.org/t/inject-dropdown-node-on-web-page-refresh-on-node-red-dashboard/62976 "2022-05-23T20:03:43Z")

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Hi I have a Dropdown Node where I am Injecting 5 Options and setting 1 option as default , I am able to achieve this I need help in When I refresh the web page (F5) I want the Dropdown node to set it at the default op…

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## [Posting form data with function](https://discourse.nodered.org/t/posting-form-data-with-function/20790)

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**Author:** [@brunoamaral](https://discourse.nodered.org/u/brunoamaral)\
**Replies:** 7\
**Last updated:** [23 May 2022 19:35 UTC](https://discourse.nodered.org/t/posting-form-data-with-function/20790 "2022-05-23T19:35:07Z")

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I'm trying to post a form to a service that receives 2 pieces of data, but for some reason the function for form data isn't working. This is the function I have so far: var payload = msg.payload; var data = { 'url': p…

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## [Oauth refresh token, best workflow?](https://discourse.nodered.org/t/oauth-refresh-token-best-workflow/62962)

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**Author:** [@lizzardguki](https://discourse.nodered.org/u/lizzardguki)\
**Replies:** 9\
**Last updated:** [23 May 2022 19:13 UTC](https://discourse.nodered.org/t/oauth-refresh-token-best-workflow/62962 "2022-05-23T19:13:25Z")

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I have a basic OAuth flow to authenticate with 3rd party API , after the authentication is successful, I use a delay node to wait for x seconds (expires\_in property - 100 seconds) and then I push the message to refresh t…

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## [Search string in array](https://discourse.nodered.org/t/search-string-in-array/62969)

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**Author:** [@azxo1](https://discourse.nodered.org/u/azxo1)\
**Replies:** 9\
**Last updated:** [23 May 2022 17:54 UTC](https://discourse.nodered.org/t/search-string-in-array/62969 "2022-05-23T17:54:54Z")

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Hello everyone! I would like to ask for help below: There are multiple objects in an array, each object has a "mac-address" variable. I would like to get the values ​​of all the "mac-address" variables on a separate li…

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## [Modbus data length error](https://discourse.nodered.org/t/modbus-data-length-error/62958)

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**Author:** [@Kaij3](https://discourse.nodered.org/u/Kaij3)\
**Replies:** 0\
**Last updated:** [23 May 2022 09:49 UTC](https://discourse.nodered.org/t/modbus-data-length-error/62958 "2022-05-23T09:49:18Z")

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Hi all, I have an IO module that i am trying to get the data via Modbus TCP, i have already installed this node-red palette Modbus node what i have done was, for the modbus server, and for Modbus Read, i have done a fe…

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## [Irrigation control](https://discourse.nodered.org/t/irrigation-control/112)

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**Author:** [@Paul-Reed](https://discourse.nodered.org/u/Paul-Reed)\
**Replies:** 15\
**Last updated:** [23 May 2022 13:41 UTC](https://discourse.nodered.org/t/irrigation-control/112 "2022-05-23T13:41:26Z")

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I’ve built an ESP8266 based device which I am going to use to auto-water my greenhouse plants based upon data from it’s ‘soil humidity’ & ‘Temperature’ sensors. The device regularly sends data via MQTT to node-red, and …

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## [Node-red command in linux shell doesn't work in script](https://discourse.nodered.org/t/node-red-command-in-linux-shell-doesnt-work-in-script/62737)

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**Author:** [@Fabien1](https://discourse.nodered.org/u/Fabien1)\
**Replies:** 5\
**Last updated:** [23 May 2022 11:48 UTC](https://discourse.nodered.org/t/node-red-command-in-linux-shell-doesnt-work-in-script/62737 "2022-05-23T11:48:27Z")

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Hello, I installed Node-RED on CenOS 7 web server. Node-RED works fine, but I happen to reload the Apache server and then Node-RED. I want to write a script to reload Apache and Node-RED : # !/bin/bash systemctl rest…

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## [How do I do this?](https://discourse.nodered.org/t/how-do-i-do-this/62953)

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**Author:** [@harry747400](https://discourse.nodered.org/u/harry747400)\
**Replies:** 5\
**Last updated:** [23 May 2022 11:08 UTC](https://discourse.nodered.org/t/how-do-i-do-this/62953 "2022-05-23T11:08:06Z")

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Hello. I use home assistant on a raspberry pi, and I have node red installed as an add-on. I want to take some entities (a bunch of booleans) from home assistant and see if any of them are true (using an or gate) and t…

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## [Passing arguments to a python file using node-red](https://discourse.nodered.org/t/passing-arguments-to-a-python-file-using-node-red/62950)

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**Author:** [@Vedant](https://discourse.nodered.org/u/Vedant)\
**Replies:** 2\
**Last updated:** [23 May 2022 06:51 UTC](https://discourse.nodered.org/t/passing-arguments-to-a-python-file-using-node-red/62950 "2022-05-23T06:51:12Z")

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Hello Everyone! I have created a python file where I have written some sys.argv arguments and in a javascript file I have created a node and exported to node-red, using this js file I pass in the arguments to the pytho…

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## [Node-Red v2.2.2](https://discourse.nodered.org/t/node-red-v2-2-2/62940)

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**Author:** [@Snoussimedaziz](https://discourse.nodered.org/u/Snoussimedaziz)\
**Replies:** 2\
**Last updated:** [23 May 2022 06:44 UTC](https://discourse.nodered.org/t/node-red-v2-2-2/62940 "2022-05-23T06:44:53Z")

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i didn't find the exec node , for storing iot data on database (mariadb)

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## [Is there a way to keep the video on the first tab playing on the second tab?](https://discourse.nodered.org/t/is-there-a-way-to-keep-the-video-on-the-first-tab-playing-on-the-second-tab/62949)

<div class="topic-metadata">

**Author:** [@jjs0426](https://discourse.nodered.org/u/jjs0426)\
**Replies:** 0\
**Last updated:** [23 May 2022 05:34 UTC](https://discourse.nodered.org/t/is-there-a-way-to-keep-the-video-on-the-first-tab-playing-on-the-second-tab/62949 "2022-05-23T05:34:33Z")

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Hey I am new to Node-Red so forgive me if this question is stupid I'd like to know how the video on the first tab is played in succession on other tabs The video template was referenced in the forum

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