# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=483

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

**Page:** 484

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## [Launch a Windows 10 app from Node-Red app running under Windows 10](https://discourse.nodered.org/t/launch-a-windows-10-app-from-node-red-app-running-under-windows-10/52232)

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**Author:** [@xytsrm](https://discourse.nodered.org/u/xytsrm)\
**Replies:** 6\
**Last updated:** [15 October 2021 04:15 UTC](https://discourse.nodered.org/t/launch-a-windows-10-app-from-node-red-app-running-under-windows-10/52232 "2021-10-15T04:15:11Z")

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I'm new to Node-Red and exploring it possible application as a replacement for an aging IOT app. For my particular application Node-Red would need the facility to launch a Windows app with a command-line argument. Is thi…

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## [Losing connection with the server](https://discourse.nodered.org/t/losing-connection-with-the-server/52186)

<div class="topic-metadata">

**Author:** [@acpp](https://discourse.nodered.org/u/acpp)\
**Replies:** 4\
**Last updated:** [15 October 2021 03:50 UTC](https://discourse.nodered.org/t/losing-connection-with-the-server/52186 "2021-10-15T03:50:29Z")

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Hi! English is not my native language so forgive any mispelling. My very first time with Node Red; I did a fresh install in my Raspberry Pi 3B+ running the script that I found on nodered.org; I just installed "node-red…

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## [Generate string from an array?](https://discourse.nodered.org/t/generate-string-from-an-array/52233)

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**Author:** [@fangfang94](https://discourse.nodered.org/u/fangfang94)\
**Replies:** 3\
**Last updated:** [14 October 2021 22:44 UTC](https://discourse.nodered.org/t/generate-string-from-an-array/52233 "2021-10-14T22:44:00Z")

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Example I have an array all\_object = \['A', 'B', 'C'\] and I want to create a string from this array is "stringANDstringANDstring" if all\_object = \['A', 'B', 'C','D'\] it will become "stringANDstringANDstringANDstring…

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## [Convert 2 modbus words to float](https://discourse.nodered.org/t/convert-2-modbus-words-to-float/52229)

<div class="topic-metadata">

**Author:** [@pautorras](https://discourse.nodered.org/u/pautorras)\
**Replies:** 2\
**Last updated:** [14 October 2021 21:00 UTC](https://discourse.nodered.org/t/convert-2-modbus-words-to-float/52229 "2021-10-14T21:00:10Z")

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Hi folks, I'm trying to convert 2 words in a ModbusTCP read, to a float value. Using node-red-contrib-buffer-parser, I'm not able to convert to float. This is what I get in Modbus read: \[ 16888, 1049 \] I don't under…

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## [NodeMCU & Node-RED](https://discourse.nodered.org/t/nodemcu-node-red/52220)

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**Author:** [@wael5300](https://discourse.nodered.org/u/wael5300)\
**Replies:** 2\
**Last updated:** [14 October 2021 18:59 UTC](https://discourse.nodered.org/t/nodemcu-node-red/52220 "2021-10-14T18:59:18Z")

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How to connect NodeNodeMCU to Node-RED directly?.

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## [Loop query array and send to mysql](https://discourse.nodered.org/t/loop-query-array-and-send-to-mysql/52199)

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**Author:** [@ketpa](https://discourse.nodered.org/u/ketpa)\
**Replies:** 5\
**Last updated:** [14 October 2021 18:19 UTC](https://discourse.nodered.org/t/loop-query-array-and-send-to-mysql/52199 "2021-10-14T18:19:40Z")

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I have array of query I try sent msg.topic to mysql like this but it send me only one query How to loop query as msg.topic and send to mysql ?

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## [Enable projects on Windows10 with v2.0.6?](https://discourse.nodered.org/t/enable-projects-on-windows10-with-v2-0-6/52223)

<div class="topic-metadata">

**Author:** [@wb666greene](https://discourse.nodered.org/u/wb666greene)\
**Replies:** 7\
**Last updated:** [14 October 2021 18:06 UTC](https://discourse.nodered.org/t/enable-projects-on-windows10-with-v2-0-6/52223 "2021-10-14T18:06:30Z")

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Taking a detour helping setup Windows 10 for a friend. Got node-red v2.0.6 running apparently correctly, but I don't see the "Projects" selection in the hamburger menu. I edited the settings file editorTheme: { proje…

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## [Node-red-contrib-zigbee2mqtt join in a function](https://discourse.nodered.org/t/node-red-contrib-zigbee2mqtt-join-in-a-function/52221)

<div class="topic-metadata">

**Author:** [@tpbillund](https://discourse.nodered.org/u/tpbillund)\
**Replies:** 3\
**Last updated:** [14 October 2021 17:31 UTC](https://discourse.nodered.org/t/node-red-contrib-zigbee2mqtt-join-in-a-function/52221 "2021-10-14T17:31:58Z")

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Hi If I have to Zigbee devices and i'm using a zigbee2mqtt "GET" node. one for each device, how can I then wire em to the same "Function" node and set up a message? atm. i'm using this to get the values I want from on…

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## [Time stamp difference](https://discourse.nodered.org/t/time-stamp-difference/52216)

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**Author:** [@Jonathan95](https://discourse.nodered.org/u/Jonathan95)\
**Replies:** 6\
**Last updated:** [14 October 2021 17:13 UTC](https://discourse.nodered.org/t/time-stamp-difference/52216 "2021-10-14T17:13:48Z")

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Hi all, I have an inverter that has a last connection date which I want to compare with the current node red server time then be able to give the difference in hours/days/months/years(if applicable). I have tried both…

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## [Retrieve an ENV variable label in subflow](https://discourse.nodered.org/t/retrieve-an-env-variable-label-in-subflow/52222)

<div class="topic-metadata">

**Author:** [@fmarzocca](https://discourse.nodered.org/u/fmarzocca)\
**Replies:** 2\
**Last updated:** [14 October 2021 16:16 UTC](https://discourse.nodered.org/t/retrieve-an-env-variable-label-in-subflow/52222 "2021-10-14T16:16:56Z")

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Hi, I have set Lables on an env variable in a subflow (as a list), as shown: Now, I need to retrieve the Label in a function (in the same subflow), depending upon the choosen value. The env variable is named ACTION. …

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## [HTTP Request - Persistent authorization token](https://discourse.nodered.org/t/http-request-persistent-authorization-token/52175)

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**Author:** [@zuasive](https://discourse.nodered.org/u/zuasive)\
**Replies:** 7\
**Last updated:** [14 October 2021 14:22 UTC](https://discourse.nodered.org/t/http-request-persistent-authorization-token/52175 "2021-10-14T14:22:59Z")

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Hello good people, I'm hoping for an assist here. I've been trying to get a flow working for some time now and keep hitting a road block. The goal is to be able to do a lookup on a separate REST service using 3 posts w/j…

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## [Simplify function node](https://discourse.nodered.org/t/simplify-function-node/52172)

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**Author:** [@Romprod](https://discourse.nodered.org/u/Romprod)\
**Replies:** 9\
**Last updated:** [14 October 2021 13:48 UTC](https://discourse.nodered.org/t/simplify-function-node/52172 "2021-10-14T13:48:05Z")

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Hi, I have the following function node that I'm trying to simplify, instead of listing all array items is there a way to make it loop them? The number of array items may not always be the same. msg.payload = { "@t…

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## [Editor width with Monaco](https://discourse.nodered.org/t/editor-width-with-monaco/52215)

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**Author:** [@garrett](https://discourse.nodered.org/u/garrett)\
**Replies:** 0\
**Last updated:** [14 October 2021 13:28 UTC](https://discourse.nodered.org/t/editor-width-with-monaco/52215 "2021-10-14T13:28:03Z")

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I absolutely love having the Monaco editor! One minor annoyance is the width of the editor box when I open a function - with ACE I could drag it larger and it would retain the size after that. With Monaco it defaults to …

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## [Imported and deployed flow from the "Creating your first flow" tutorial produces "Invalid Date" in debug](https://discourse.nodered.org/t/imported-and-deployed-flow-from-the-creating-your-first-flow-tutorial-produces-invalid-date-in-debug/52210)

<div class="topic-metadata">

**Author:** [@ackalker](https://discourse.nodered.org/u/ackalker)\
**Replies:** 1\
**Last updated:** [14 October 2021 11:41 UTC](https://discourse.nodered.org/t/imported-and-deployed-flow-from-the-creating-your-first-flow-tutorial-produces-invalid-date-in-debug/52210 "2021-10-14T11:41:27Z")

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As an experiment, I did a fresh install of Node-RED moved my existing $HOME/.node-red directory aside started Node-RED copied the flow at the bottom of the Creating your first flow tutorial imported the flow in Node-RE…

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## [Node-red-contrib-mssql / Connection is closed](https://discourse.nodered.org/t/node-red-contrib-mssql-connection-is-closed/52188)

<div class="topic-metadata">

**Author:** [@sefaguntepe](https://discourse.nodered.org/u/sefaguntepe)\
**Replies:** 1\
**Last updated:** [14 October 2021 12:34 UTC](https://discourse.nodered.org/t/node-red-contrib-mssql-connection-is-closed/52188 "2021-10-14T12:34:17Z")

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Hello, I have 12 flow. Each flow has one "MSSQL" node. I noticed recently that I was getting this error all the time. What do you think I should do? "ConnectionError: Connection is closed."

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## [Reading the udp data with a frame header](https://discourse.nodered.org/t/reading-the-udp-data-with-a-frame-header/52161)

<div class="topic-metadata">

**Author:** [@lizzardguki](https://discourse.nodered.org/u/lizzardguki)\
**Replies:** 11\
**Last updated:** [14 October 2021 12:26 UTC](https://discourse.nodered.org/t/reading-the-udp-data-with-a-frame-header/52161 "2021-10-14T12:26:34Z")

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I'm receiving data from a Dragino temp sensor via a UDP node. The payload contains 25 bytes that i need to convert to string. According to Dragino, i have a frame definition i need to follow to i guess separate the byte…

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## [Node-red-contrib-mssql-plus =\> value in database is empty](https://discourse.nodered.org/t/node-red-contrib-mssql-plus-value-in-database-is-empty/52205)

<div class="topic-metadata">

**Author:** [@Alexandre1987](https://discourse.nodered.org/u/Alexandre1987)\
**Replies:** 4\
**Last updated:** [14 October 2021 12:19 UTC](https://discourse.nodered.org/t/node-red-contrib-mssql-plus-value-in-database-is-empty/52205 "2021-10-14T12:19:05Z")

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Processing: Nodered.pdf... Hello, I am a new user of Nodered and am starting to create my first flux. I am having difficulty with the "node-red-contrib-mssql-plus" node, I can connect to my table, a row is created but…

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## [Search on webpage and retrieve data](https://discourse.nodered.org/t/search-on-webpage-and-retrieve-data/52091)

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**Author:** [@Melliott](https://discourse.nodered.org/u/Melliott)\
**Replies:** 10\
**Last updated:** [14 October 2021 11:38 UTC](https://discourse.nodered.org/t/search-on-webpage-and-retrieve-data/52091 "2021-10-14T11:38:12Z")

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Hi all. I'm looking to draw out information from my local council page, specifically bin collection data. Unfortunately to get that data requires a postcode to be entered before any of the data shows up. I've got a bas…

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## [Help for node-red-contrib-redplc-rpi-mcp342x](https://discourse.nodered.org/t/help-for-node-red-contrib-redplc-rpi-mcp342x/52185)

<div class="topic-metadata">

**Author:** [@Max\_Italy](https://discourse.nodered.org/u/Max_Italy)\
**Replies:** 0\
**Last updated:** [13 October 2021 23:26 UTC](https://discourse.nodered.org/t/help-for-node-red-contrib-redplc-rpi-mcp342x/52185 "2021-10-13T23:26:28Z")

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Hello everyone, i am trying to use this node as indicated but i cannot get it to work specifically MCP3424 (4ch). The aim is to use Node Red as a Fixture testing Linux embedded system for electronic boards. Everything…

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## [Help on how to roll out a new version of a subflow I wrote amongst my machines](https://discourse.nodered.org/t/help-on-how-to-roll-out-a-new-version-of-a-subflow-i-wrote-amongst-my-machines/52113)

<div class="topic-metadata">

**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 10\
**Last updated:** [13 October 2021 22:36 UTC](https://discourse.nodered.org/t/help-on-how-to-roll-out-a-new-version-of-a-subflow-i-wrote-amongst-my-machines/52113 "2021-10-13T22:36:38Z")

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I've written/made/built a subflow. Maybe not the correct way - not via github - and it has evolved to the next level. I have tried my best to also update the instructions. So how can I get it to all my machines - with…

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## [Node Red Daemon example](https://discourse.nodered.org/t/node-red-daemon-example/52178)

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**Author:** [@chasmccoy](https://discourse.nodered.org/u/chasmccoy)\
**Replies:** 4\
**Last updated:** [13 October 2021 20:39 UTC](https://discourse.nodered.org/t/node-red-daemon-example/52178 "2021-10-13T20:39:43Z")

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Hello all...trying to find an example of a configured node red Daemon. I'm currently using an Exec Node in Node Red 2.06 and it works like a charm, except for I want ability to read stdin while running. So I tried out …

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## [Grafana getting data / filtering data from node-red?](https://discourse.nodered.org/t/grafana-getting-data-filtering-data-from-node-red/52110)

<div class="topic-metadata">

**Author:** [@lizzardguki](https://discourse.nodered.org/u/lizzardguki)\
**Replies:** 5\
**Last updated:** [13 October 2021 16:34 UTC](https://discourse.nodered.org/t/grafana-getting-data-filtering-data-from-node-red/52110 "2021-10-13T16:34:29Z")

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Playing with Grafana and some open source I found on the internet, I have plenty of data (350k+ entries) and want to display them, while saving them to influx DB was easy, and using the built-in Datasource connector. I f…

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## [Question about subflows](https://discourse.nodered.org/t/question-about-subflows/52147)

<div class="topic-metadata">

**Author:** [@krambriw](https://discourse.nodered.org/u/krambriw)\
**Replies:** 12\
**Last updated:** [13 October 2021 15:10 UTC](https://discourse.nodered.org/t/question-about-subflows/52147 "2021-10-13T15:10:29Z")

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Hi, I wonder if a running instance of a subflow has some unique id? I need to temporary save a variable in (i.e. in global context) unique to a subsystem instance. If there is, is there then any way to "grab" that id fr…

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## [Pulling historical data from Twitter API and writing to a CVS file](https://discourse.nodered.org/t/pulling-historical-data-from-twitter-api-and-writing-to-a-cvs-file/52167)

<div class="topic-metadata">

**Author:** [@stanno](https://discourse.nodered.org/u/stanno)\
**Replies:** 0\
**Last updated:** [13 October 2021 14:54 UTC](https://discourse.nodered.org/t/pulling-historical-data-from-twitter-api-and-writing-to-a-cvs-file/52167 "2021-10-13T14:54:27Z")

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Hello all, I've recently started using nodeRed so naturally, I've run into difficulties and really need some help piecing phase 2 of my project together. The Standard Track TwitterAPI allows for access to the past 7 day…

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## [How can I stop spline-curve from spamming my logs every 2 minutes?](https://discourse.nodered.org/t/how-can-i-stop-spline-curve-from-spamming-my-logs-every-2-minutes/52096)

<div class="topic-metadata">

**Author:** [@DeadBranch](https://discourse.nodered.org/u/DeadBranch)\
**Replies:** 2\
**Last updated:** [13 October 2021 14:35 UTC](https://discourse.nodered.org/t/how-can-i-stop-spline-curve-from-spamming-my-logs-every-2-minutes/52096 "2021-10-13T14:35:53Z")

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Hello. I'm running Node-Red v2.0.6 in a docker version 20.10.8 container on a Raspberry Pi 3 B+ on Raspbian buster 10. The container is launched by a docker-compose (version 1.21.0) file. I'm not exactly sure when, and…

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## [Node Red Admin behind firewall](https://discourse.nodered.org/t/node-red-admin-behind-firewall/52143)

<div class="topic-metadata">

**Author:** [@HarryPottar](https://discourse.nodered.org/u/HarryPottar)\
**Replies:** 4\
**Last updated:** [13 October 2021 13:42 UTC](https://discourse.nodered.org/t/node-red-admin-behind-firewall/52143 "2021-10-13T13:42:38Z")

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HI, We have node red running in a kuberntices cluster, we have Nginx running on the font end. We want to send the admin screen behind a VPN. https://host:1880/#flow. Nginx ignore the #flow, how do we route the admi…

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## [Install node-red-contrib-zwave](https://discourse.nodered.org/t/install-node-red-contrib-zwave/52140)

<div class="topic-metadata">

**Author:** [@NickB](https://discourse.nodered.org/u/NickB)\
**Replies:** 12\
**Last updated:** [13 October 2021 12:33 UTC](https://discourse.nodered.org/t/install-node-red-contrib-zwave/52140 "2021-10-13T12:33:09Z")

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Hi, I used in the past node-red-contrib-zwave, but today I crashed my node red (I have no idea why, but it did, something with a modbus flow that probably caused a loop or so....) Only option was to delete my flows and…

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## [Access file or directory in a project repo in Node-Red itself](https://discourse.nodered.org/t/access-file-or-directory-in-a-project-repo-in-node-red-itself/52157)

<div class="topic-metadata">

**Author:** [@AP\_Zero](https://discourse.nodered.org/u/AP_Zero)\
**Replies:** 1\
**Last updated:** [13 October 2021 12:01 UTC](https://discourse.nodered.org/t/access-file-or-directory-in-a-project-repo-in-node-red-itself/52157 "2021-10-13T12:01:32Z")

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Is it possible to access files inside a directory on a git repo? Basically, I need to access sound files that was uploaded in the Node-Red project repository and play it using Node-Red

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## [Docker container open from android](https://discourse.nodered.org/t/docker-container-open-from-android/51910)

<div class="topic-metadata">

**Author:** [@castigliano](https://discourse.nodered.org/u/castigliano)\
**Replies:** 28\
**Last updated:** [13 October 2021 11:06 UTC](https://discourse.nodered.org/t/docker-container-open-from-android/51910 "2021-10-13T11:06:45Z")

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Hello All, I am starting with Docker containers and I created some instances of Node-RED using port 1880, 1881 and 1882. I can open each instance from any laptop inside the same network writing the IP of PC which contai…

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## [Failing at installing node-red-contrib-bme280](https://discourse.nodered.org/t/failing-at-installing-node-red-contrib-bme280/52151)

<div class="topic-metadata">

**Author:** [@Rezcue](https://discourse.nodered.org/u/Rezcue)\
**Replies:** 3\
**Last updated:** [13 October 2021 09:46 UTC](https://discourse.nodered.org/t/failing-at-installing-node-red-contrib-bme280/52151 "2021-10-13T09:46:37Z")

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Hello, im failing at installing node-red-contrib-bme280. Can anyone help me out? Im getting this error: 13 Oct 10:36:52 - \[info\] Modul wird installiert: node-red-contrib-bme280, Version: 1.0.0 13 Oct 10:37:00 - \[warn…

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