# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=201

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

**Page:** 202

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## [Export Flow to a Website](https://discourse.nodered.org/t/export-flow-to-a-website/79269)

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**Author:** [@bill210kouk](https://discourse.nodered.org/u/bill210kouk)\
**Replies:** 3\
**Last updated:** [17 June 2023 10:53 UTC](https://discourse.nodered.org/t/export-flow-to-a-website/79269 "2023-06-17T10:53:08Z")

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Good Morning Everyone. Hope you're alright! I would like to ask some development advice. I ve build my dashboard working properly and with a nice fucntionality. So now i would like to export it . Ive made the export su…

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## [File writing blocks NR?](https://discourse.nodered.org/t/file-writing-blocks-nr/79021)

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**Author:** [@SandeepA](https://discourse.nodered.org/u/SandeepA)\
**Replies:** 28\
**Last updated:** [17 June 2023 10:33 UTC](https://discourse.nodered.org/t/file-writing-blocks-nr/79021 "2023-06-17T10:33:15Z")

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Hi , While i am aware NR uses Node.js ... and i would expect that when we write the files from NR - other processes will continue, What we see is that other NR processes go on hold when we do file write. We have 100k r…

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## [I don't install node-red-contrib-rtsp-client](https://discourse.nodered.org/t/i-dont-install-node-red-contrib-rtsp-client/79234)

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**Author:** [@allacmc](https://discourse.nodered.org/u/allacmc)\
**Replies:** 4\
**Last updated:** [17 June 2023 06:56 UTC](https://discourse.nodered.org/t/i-dont-install-node-red-contrib-rtsp-client/79234 "2023-06-17T06:56:15Z")

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Continuing the discussion from How to display live video to the node red dashboard and have the ability to simply turn it on and turn it off with either a slide switch or "On" "Off" push buttons: I couldn't install …

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## [How to insert an image from your local machine into a string object to be converted by the "html to pdf" node](https://discourse.nodered.org/t/how-to-insert-an-image-from-your-local-machine-into-a-string-object-to-be-converted-by-the-html-to-pdf-node/79260)

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**Author:** [@Willianvcn](https://discourse.nodered.org/u/Willianvcn)\
**Replies:** 2\
**Last updated:** [16 June 2023 19:47 UTC](https://discourse.nodered.org/t/how-to-insert-an-image-from-your-local-machine-into-a-string-object-to-be-converted-by-the-html-to-pdf-node/79260 "2023-06-16T19:47:59Z")

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My problem is that when I convert the page I created in html to the obj string that the 'html to pdf' node needs to receive to do the conversion, this obj string loses the ability to access the path ("\<img src="C:\\ Users…

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## [Node-red-contrib-puppeteer-new](https://discourse.nodered.org/t/node-red-contrib-puppeteer-new/79174)

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**Author:** [@madmax](https://discourse.nodered.org/u/madmax)\
**Replies:** 5\
**Last updated:** [16 June 2023 13:39 UTC](https://discourse.nodered.org/t/node-red-contrib-puppeteer-new/79174 "2023-06-16T13:39:14Z")

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Hello! Has anyone got node-red-contrib-puppeteer-new to work? Unfortunately there are no instructions for this. Is that possible or do you have to install something afterwards?

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## [First time using buttons](https://discourse.nodered.org/t/first-time-using-buttons/78974)

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**Author:** [@spawnreaper](https://discourse.nodered.org/u/spawnreaper)\
**Replies:** 31\
**Last updated:** [16 June 2023 13:05 UTC](https://discourse.nodered.org/t/first-time-using-buttons/78974 "2023-06-16T13:05:31Z")

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I did one project in the past with node red and that worked after struggling a lot. Now im doing a new one but i've lost the minimal knowledge i learned in the first project. Here is my project. I have 5 buttons. 1 4x…

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## [ESP8266 NodeMCU + Homebridge + MQTT + Node-Red](https://discourse.nodered.org/t/esp8266-nodemcu-homebridge-mqtt-node-red/79248)

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**Author:** [@cherik](https://discourse.nodered.org/u/cherik)\
**Replies:** 1\
**Last updated:** [16 June 2023 12:26 UTC](https://discourse.nodered.org/t/esp8266-nodemcu-homebridge-mqtt-node-red/79248 "2023-06-16T12:26:59Z")

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Всем привет. Помогите пожалуйста новичку. Хотя бы с чего начать. Решил попробовать платформу Node REd. Имеется проект: ESP8266 NodeMCU с прошивкой ESPEsy к нему будет подключён Шаговый двигатель 28BYJ и всё это должно уп…

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## [General Question to experts](https://discourse.nodered.org/t/general-question-to-experts/79195)

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**Author:** [@colin0031](https://discourse.nodered.org/u/colin0031)\
**Replies:** 2\
**Last updated:** [16 June 2023 02:06 UTC](https://discourse.nodered.org/t/general-question-to-experts/79195 "2023-06-16T02:06:27Z")

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Hello, Hope the forum is not only for tech questions. I am using node red for a while and quite happy about it. And now I wonder If I shall get into Grafana and influx db. Since node red provides its own ui, is there m…

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## [Language Identification](https://discourse.nodered.org/t/language-identification/79230)

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**Author:** [@madmax](https://discourse.nodered.org/u/madmax)\
**Replies:** 1\
**Last updated:** [16 June 2023 01:57 UTC](https://discourse.nodered.org/t/language-identification/79230 "2023-06-16T01:57:16Z")

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Hello! Is there a way to recognize and recognize text language in node red. the result should then be, for example, in English, German,.... And maybe a percentage with which probability it is the language. I hope tha…

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## [How to modify payload and display it in a text box](https://discourse.nodered.org/t/how-to-modify-payload-and-display-it-in-a-text-box/79228)

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**Author:** [@rmystique](https://discourse.nodered.org/u/rmystique)\
**Replies:** 3\
**Last updated:** [16 June 2023 01:57 UTC](https://discourse.nodered.org/t/how-to-modify-payload-and-display-it-in-a-text-box/79228 "2023-06-16T01:57:06Z")

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I have: rpi-dht11 : msg : Object { topic: "rpi-dht11", \_msgid: "d5bb2441c0209e4e", payload: "19.00", humidity: "59.00", isValid: true … } and I want to multiply the "payload" by 1.8 +32 to convert it to F degrees and …

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## [Connecting to Tuya temperature and humidity sensor fails](https://discourse.nodered.org/t/connecting-to-tuya-temperature-and-humidity-sensor-fails/79165)

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**Author:** [@subjects](https://discourse.nodered.org/u/subjects)\
**Replies:** 2\
**Last updated:** [16 June 2023 00:15 UTC](https://discourse.nodered.org/t/connecting-to-tuya-temperature-and-humidity-sensor-fails/79165 "2023-06-16T00:15:23Z")

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Hi, I am trying to connect to a Tuya Temperature and Humdity sensor using the "Tuya smart device hub" node with no success. I have found the key and the id as explained in the instructions from the nodes installation n…

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## [Data is single batched](https://discourse.nodered.org/t/data-is-single-batched/79215)

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**Author:** [@rromele](https://discourse.nodered.org/u/rromele)\
**Replies:** 2\
**Last updated:** [15 June 2023 21:41 UTC](https://discourse.nodered.org/t/data-is-single-batched/79215 "2023-06-15T21:41:58Z")

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Hi, i'm sending data in cluod channel with attached function. Why i have an error msg "data is single batched" ? What is the correct way to write the function without having that message? Thanks in advance for your he…

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## [Change Node - Not sure how to Reference payload in Expression](https://discourse.nodered.org/t/change-node-not-sure-how-to-reference-payload-in-expression/79204)

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**Author:** [@Quesnt](https://discourse.nodered.org/u/Quesnt)\
**Replies:** 4\
**Last updated:** [15 June 2023 18:00 UTC](https://discourse.nodered.org/t/change-node-not-sure-how-to-reference-payload-in-expression/79204 "2023-06-15T18:00:35Z")

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Hi, Given the expression and input below using the Change node, the test function works fine however when running the trigger I get no output. I've looked at many other posts on here and suspect I am not properly refere…

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## [Http-request-node "Enable connection keep-alive" seems not to work](https://discourse.nodered.org/t/http-request-node-enable-connection-keep-alive-seems-not-to-work/79225)

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**Author:** [@Cyber](https://discourse.nodered.org/u/Cyber)\
**Replies:** 2\
**Last updated:** [15 June 2023 10:48 UTC](https://discourse.nodered.org/t/http-request-node-enable-connection-keep-alive-seems-not-to-work/79225 "2023-06-15T10:48:33Z")

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Hello, I am using node red 3.0.2 I tick the setting "Enable connection keep-alive" in a request node. I do not set any headers or something else before, only an inject node (timestamp set there) fires constantly. w…

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## [Safety node via function node —need help!](https://discourse.nodered.org/t/safety-node-via-function-node-need-help/79182)

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**Author:** [@ruuuppi](https://discourse.nodered.org/u/ruuuppi)\
**Replies:** 2\
**Last updated:** [15 June 2023 07:29 UTC](https://discourse.nodered.org/t/safety-node-via-function-node-need-help/79182 "2023-06-15T07:29:31Z")

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Hello everyone, i‘m new in programming. For my project i would need a function with an „if/or“ rule. i have 2 hysteresis nodes from my two warm- supply. so if one or both of them sends „on“, „1“, „true“.. i need to p…

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## [NodeRED Pre-installed Raspberry Pi powered HMI](https://discourse.nodered.org/t/nodered-pre-installed-raspberry-pi-powered-hmi/78837)

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**Author:** [@Jena](https://discourse.nodered.org/u/Jena)\
**Replies:** 12\
**Last updated:** [15 June 2023 03:42 UTC](https://discourse.nodered.org/t/nodered-pre-installed-raspberry-pi-powered-hmi/78837 "2023-06-15T03:42:25Z")

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Happen to find this NodeRED pre-installed Raspberry PI CM4-powered HMI from Seeed and think it would be a nice fit for my new control system, what do you all think? :face\_with\_monocle:or any other Node-red compatible HMI…

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## [ComfoAir Connection Closed](https://discourse.nodered.org/t/comfoair-connection-closed/79205)

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**Author:** [@Mark.Resting](https://discourse.nodered.org/u/Mark.Resting)\
**Replies:** 0\
**Last updated:** [14 June 2023 15:01 UTC](https://discourse.nodered.org/t/comfoair-connection-closed/79205 "2023-06-14T15:01:35Z")

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Hi all, I try to use the ConfoAir imlementation "node-red-contrib-comfoair V0.0.8". It is working fine for some time, but after a while i'm getting this error: "comfoair \[/dev/serial/by-id/usb-Prolific\_Technology\_Inc.…

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## [Automatically save the flow from one server to another server](https://discourse.nodered.org/t/automatically-save-the-flow-from-one-server-to-another-server/79196)

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**Author:** [@Shyama\_Gupta](https://discourse.nodered.org/u/Shyama_Gupta)\
**Replies:** 0\
**Last updated:** [14 June 2023 11:46 UTC](https://discourse.nodered.org/t/automatically-save-the-flow-from-one-server-to-another-server/79196 "2023-06-14T11:46:16Z")

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How to automatically save the flow weekly from one server to another server of Node-RED?

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## [Chart-image node does not react when plugins field exist](https://discourse.nodered.org/t/chart-image-node-does-not-react-when-plugins-field-exist/79169)

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**Author:** [@okircali](https://discourse.nodered.org/u/okircali)\
**Replies:** 1\
**Last updated:** [14 June 2023 09:37 UTC](https://discourse.nodered.org/t/chart-image-node-does-not-react-when-plugins-field-exist/79169 "2023-06-14T09:37:45Z")

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Hello, I am trying to create a chart with chart-image node. However, when I tried to use plugins field in the options context , chart-image node does not react. Not only create the image but also does not show any erro…

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## [Dynamic WatchDog MQTT](https://discourse.nodered.org/t/dynamic-watchdog-mqtt/79190)

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**Author:** [@LinkView\_Maze](https://discourse.nodered.org/u/LinkView_Maze)\
**Replies:** 3\
**Last updated:** [14 June 2023 09:27 UTC](https://discourse.nodered.org/t/dynamic-watchdog-mqtt/79190 "2023-06-14T09:27:37Z")

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Hello Community, I use MQTT protocol for my system.I have a lot of rpi and I use a dynamic post but the properties WagDog is not dynamic. Ex: rpi 1 the topic is RPI1/Input RPI1/Watchdog rpi 2 the topic is RPI2/In…

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## [CHINT smart meter DDSU666](https://discourse.nodered.org/t/chint-smart-meter-ddsu666/79177)

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**Author:** [@kgakere](https://discourse.nodered.org/u/kgakere)\
**Replies:** 1\
**Last updated:** [14 June 2023 04:41 UTC](https://discourse.nodered.org/t/chint-smart-meter-ddsu666/79177 "2023-06-14T04:41:33Z")

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I have an energy meter DDSU666.004.0006Single phase electronic energy meter that i am trying to get connected and read values using the contrib-modbus version 5.26.0. Has anyone come across this before? The addresses p…

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## [Node-RED Flow tabs](https://discourse.nodered.org/t/node-red-flow-tabs/79172)

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**Author:** [@enniob](https://discourse.nodered.org/u/enniob)\
**Replies:** 6\
**Last updated:** [13 June 2023 21:23 UTC](https://discourse.nodered.org/t/node-red-flow-tabs/79172 "2023-06-13T21:23:14Z")

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Is it possible to hide all the flow tabs by default and only show them when you open the correct URL? thanks

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## [Setting up remote branch](https://discourse.nodered.org/t/setting-up-remote-branch/79152)

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**Author:** [@CarbonNanoTubes](https://discourse.nodered.org/u/CarbonNanoTubes)\
**Replies:** 4\
**Last updated:** [13 June 2023 20:55 UTC](https://discourse.nodered.org/t/setting-up-remote-branch/79152 "2023-06-13T20:55:52Z")

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I am trying to setup a node-red project for the first time and I'm a little confused on how I get node-red to push to my origin. Under Menu-\>Projects-\>Project Settings-\>Settings, I have added a git remote to my local git…

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## [From array to string with join](https://discourse.nodered.org/t/from-array-to-string-with-join/79179)

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**Author:** [@ttavlis](https://discourse.nodered.org/u/ttavlis)\
**Replies:** 5\
**Last updated:** [13 June 2023 20:18 UTC](https://discourse.nodered.org/t/from-array-to-string-with-join/79179 "2023-06-13T20:18:15Z")

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Hello all, I am trying a very basic operation of turning an array to a string with join, but somehow I cannot make it. This is how my message with the array look like: Then I use a simple join node, set to string, …

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## [Upload multiple files with form-data](https://discourse.nodered.org/t/upload-multiple-files-with-form-data/79180)

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**Author:** [@psutak](https://discourse.nodered.org/u/psutak)\
**Replies:** 0\
**Last updated:** [13 June 2023 19:41 UTC](https://discourse.nodered.org/t/upload-multiple-files-with-form-data/79180 "2023-06-13T19:41:46Z")

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Hello, I'm trying to upload multiple files with aditional form-data. When I send the data using Postman to 3rd party rest api, everything is fine. When I inspect Postman request, I see this: But when sending the sam…

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## [Unable to remove add-on](https://discourse.nodered.org/t/unable-to-remove-add-on/79155)

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**Author:** [@hacesoft](https://discourse.nodered.org/u/hacesoft)\
**Replies:** 4\
**Last updated:** [13 June 2023 19:00 UTC](https://discourse.nodered.org/t/unable-to-remove-add-on/79155 "2023-06-13T19:00:41Z")

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Good day, I'm trying to remove the already installed module dashboard-evi and node-red-dashboard, I have both installed and they are both in conflict. I installed the first one by mistake and then uninstalled it and then…

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## [Node Red WiFi login page](https://discourse.nodered.org/t/node-red-wifi-login-page/79170)

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**Author:** [@SoAu](https://discourse.nodered.org/u/SoAu)\
**Replies:** 4\
**Last updated:** [13 June 2023 18:09 UTC](https://discourse.nodered.org/t/node-red-wifi-login-page/79170 "2023-06-13T18:09:22Z")

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Hi Guys, I need to design a Wifi Login page for Node Red. Requirement : User can switch hotspots or go with new Wifi connection with user name and password. Kindly suggest some solutions. Thanks!!

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## [How to Autostart NodeRed in Windows?](https://discourse.nodered.org/t/how-to-autostart-nodered-in-windows/79167)

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**Author:** [@Gawan](https://discourse.nodered.org/u/Gawan)\
**Replies:** 3\
**Last updated:** [13 June 2023 16:10 UTC](https://discourse.nodered.org/t/how-to-autostart-nodered-in-windows/79167 "2023-06-13T16:10:05Z")

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Hey there, I am running Node-Red under Windows Server 2016. Right now there is a BAT-File that I have to restart manually after a Server-Reboot to restart Node-Red. The command looks like that: node-red -p 19999 -…

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## [Using Media node for node red dashboard - Video Autoplay "Run on Start" not working](https://discourse.nodered.org/t/using-media-node-for-node-red-dashboard-video-autoplay-run-on-start-not-working/78936)

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**Author:** [@saraltech](https://discourse.nodered.org/u/saraltech)\
**Replies:** 10\
**Last updated:** [13 June 2023 16:03 UTC](https://discourse.nodered.org/t/using-media-node-for-node-red-dashboard-video-autoplay-run-on-start-not-working/78936 "2023-06-13T16:03:50Z")

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Dear All, I am using Media node for running a video on Node red dashboard. Everything works well except that video does not start automatically. I have enabled "run on start" option. Still everytime, I have to press pl…

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## [Upgrade node-red on windows](https://discourse.nodered.org/t/upgrade-node-red-on-windows/79144)

<div class="topic-metadata">

**Author:** [@coat](https://discourse.nodered.org/u/coat)\
**Replies:** 31\
**Last updated:** [13 June 2023 13:04 UTC](https://discourse.nodered.org/t/upgrade-node-red-on-windows/79144 "2023-06-13T13:04:01Z")

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Hi all! I'm trying to upgrade node-red on my windows 10 from 2.2.1 to the newer. So, I used the command npm install -g --unsafe-perm node-red as read in the guide. After a few seconds, it returns changed 293 packag…

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