# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=235

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

**Page:** 236

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## [Zwave js nodered](https://discourse.nodered.org/t/zwave-js-nodered/76337)

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**Author:** [@daak](https://discourse.nodered.org/u/daak)\
**Replies:** 13\
**Last updated:** [9 March 2023 15:12 UTC](https://discourse.nodered.org/t/zwave-js-nodered/76337 "2023-03-09T15:12:07Z")

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hello, I create a program in NODE-RED (zwave js) to pilote my air conditionner I filled the IR code but the remotec zxt 600 don't receive the signals from nodered. Thank you

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## [I need help to add an array to an object](https://discourse.nodered.org/t/i-need-help-to-add-an-array-to-an-object/76297)

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**Author:** [@blackops](https://discourse.nodered.org/u/blackops)\
**Replies:** 5\
**Last updated:** [9 March 2023 12:18 UTC](https://discourse.nodered.org/t/i-need-help-to-add-an-array-to-an-object/76297 "2023-03-09T12:18:14Z")

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Hello i hope somebody can help me. My Payload looks now like that I need to change it like that

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## [Cannot install any palette into node-red](https://discourse.nodered.org/t/cannot-install-any-palette-into-node-red/76333)

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**Author:** [@hoffimarc](https://discourse.nodered.org/u/hoffimarc)\
**Replies:** 10\
**Last updated:** [9 March 2023 12:03 UTC](https://discourse.nodered.org/t/cannot-install-any-palette-into-node-red/76333 "2023-03-09T12:03:14Z")

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Hello everybody. I have installed node red on my macbook air (ARM) in the latest version. when i want to install a addon palette, it does not work. it does not mind if i install it directly via "palette verwalten - In…

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## [MQTT to cloud server](https://discourse.nodered.org/t/mqtt-to-cloud-server/75741)

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**Author:** [@yawstick1](https://discourse.nodered.org/u/yawstick1)\
**Replies:** 15\
**Last updated:** [9 March 2023 11:30 UTC](https://discourse.nodered.org/t/mqtt-to-cloud-server/75741 "2023-03-09T11:30:16Z")

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I have node-red running on a raspberry pi and about a half dozen esp32 devices with temp sensors and a couple acting as remote IO.... that has been working for quite a while. I just created a sever on digital ocean also …

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## [String with 2 points from CSV to number](https://discourse.nodered.org/t/string-with-2-points-from-csv-to-number/76292)

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**Author:** [@MA.ING](https://discourse.nodered.org/u/MA.ING)\
**Replies:** 5\
**Last updated:** [9 March 2023 11:25 UTC](https://discourse.nodered.org/t/string-with-2-points-from-csv-to-number/76292 "2023-03-09T11:25:01Z")

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Good morning, I have a problem with one value from csv, when i get this value i recive a string with 2 points (Ej: 1.480.200) and cant convert into a number. I need convert this string in a number and divide this value…

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## [Firebase can't send simply msg.payload](https://discourse.nodered.org/t/firebase-cant-send-simply-msg-payload/76316)

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**Author:** [@pepebiskup1](https://discourse.nodered.org/u/pepebiskup1)\
**Replies:** 8\
**Last updated:** [9 March 2023 10:29 UTC](https://discourse.nodered.org/t/firebase-cant-send-simply-msg-payload/76316 "2023-03-09T10:29:15Z")

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Hello. I'm trying to send a simple msg. payload but it's not working. What should I write in the data field? When I will write just the number it can be sent and it's working.

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## [Node-red Switch node counter timestamp. How can I start and stop output](https://discourse.nodered.org/t/node-red-switch-node-counter-timestamp-how-can-i-start-and-stop-output/76270)

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**Author:** [@GoldD](https://discourse.nodered.org/u/GoldD)\
**Replies:** 4\
**Last updated:** [9 March 2023 10:08 UTC](https://discourse.nodered.org/t/node-red-switch-node-counter-timestamp-how-can-i-start-and-stop-output/76270 "2023-03-09T10:08:57Z")

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Create timestamp repeatedly on the Inject node When Switch node is on The counter starts at 1 to 20, If the counter value exceeds 20, counter from 1 again. debug node outputs timestamp Output up to 20, Until the Switch…

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## [Multiple temperatures controlling one fan](https://discourse.nodered.org/t/multiple-temperatures-controlling-one-fan/76226)

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**Author:** [@HolgiB](https://discourse.nodered.org/u/HolgiB)\
**Replies:** 10\
**Last updated:** [9 March 2023 08:22 UTC](https://discourse.nodered.org/t/multiple-temperatures-controlling-one-fan/76226 "2023-03-09T08:22:35Z")

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Hey there, hopefully I posting in the right place. :thinking: I have searched around and experimented a bit but am still struggeling with a rather simple task. I use Node-RED plus some ESPs with DS18 temp sensors plus …

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## [Context scope and complex variables possible?](https://discourse.nodered.org/t/context-scope-and-complex-variables-possible/76335)

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**Author:** [@dakky](https://discourse.nodered.org/u/dakky)\
**Replies:** 1\
**Last updated:** [9 March 2023 06:49 UTC](https://discourse.nodered.org/t/context-scope-and-complex-variables-possible/76335 "2023-03-09T06:49:59Z")

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Hello I want to store a javascript object in the flow context scope to keep a state over different runs of a flow Example: { "lastState": { "device1": timestamp, "device2": timestamp, } } Something like …

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## [Change date format](https://discourse.nodered.org/t/change-date-format/76212)

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**Author:** [@dineshaj](https://discourse.nodered.org/u/dineshaj)\
**Replies:** 5\
**Last updated:** [9 March 2023 06:03 UTC](https://discourse.nodered.org/t/change-date-format/76212 "2023-03-09T06:03:23Z")

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Hi, I have this function let day = new Date("2005-03-01"); //YYYY-MM-DD var end = new Date("2005-03-03"); while(day \<= end){ startDay = day.setDate(day.getDate() - 1); endDay = day.setDate(day.getDate() + 1); …

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## [Error rc=226, can't install any nodes. EROFS?](https://discourse.nodered.org/t/error-rc-226-cant-install-any-nodes-erofs/76203)

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**Author:** [@CoryD](https://discourse.nodered.org/u/CoryD)\
**Replies:** 4\
**Last updated:** [9 March 2023 04:32 UTC](https://discourse.nodered.org/t/error-rc-226-cant-install-any-nodes-erofs/76203 "2023-03-09T04:32:19Z")

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Hi, I'm getting this error when trying to install any nodes: 2023-03-06T23:19:39.233Z Install : node-red-contrib-timerswitch 1.4.0 2023-03-06T23:19:29.415Z npm install --no-audit --no-update-notifier --no-fund --save -…

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## [Nodered/uibuilder reading json files](https://discourse.nodered.org/t/nodered-uibuilder-reading-json-files/76325)

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**Author:** [@gNeandr](https://discourse.nodered.org/u/gNeandr)\
**Replies:** 4\
**Last updated:** [9 March 2023 00:11 UTC](https://discourse.nodered.org/t/nodered-uibuilder-reading-json-files/76325 "2023-03-09T00:11:04Z")

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uibuilder works well to migrate my older project to NR/uib. Problem (atm) is to get/read json file(s) to use that data in index.js. (And yes, I need to read dircetly from rpi files!) Followed @knolleary advice with /h…

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## [Number in Jsonata](https://discourse.nodered.org/t/number-in-jsonata/76289)

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**Author:** [@Becker](https://discourse.nodered.org/u/Becker)\
**Replies:** 7\
**Last updated:** [8 March 2023 22:21 UTC](https://discourse.nodered.org/t/number-in-jsonata/76289 "2023-03-08T22:21:36Z")

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Hi, I just want to have the actual hour as a number. So I´ve build: \[ { "id": "9c8c4170df54250b", "type": "inject", "z": "7b74e2db318add18", "name": "Zeitstempel", "props": \[…

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## [Return output to parent in child\_process](https://discourse.nodered.org/t/return-output-to-parent-in-child-process/76304)

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**Author:** [@denissanga](https://discourse.nodered.org/u/denissanga)\
**Replies:** 2\
**Last updated:** [8 March 2023 20:38 UTC](https://discourse.nodered.org/t/return-output-to-parent-in-child-process/76304 "2023-03-08T20:38:03Z")

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hi all, I'm writing a function with chil\_process.exec and I would return a value to parent var dir = flow.get("mntFolderName") let checkOut try { var mntCheckOutput = exec('mountpoint ' + dir, (error, stdout) =\> …

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## [Explanation of code help](https://discourse.nodered.org/t/explanation-of-code-help/76319)

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**Author:** [@gerry](https://discourse.nodered.org/u/gerry)\
**Replies:** 2\
**Last updated:** [8 March 2023 20:28 UTC](https://discourse.nodered.org/t/explanation-of-code-help/76319 "2023-03-08T20:28:11Z")

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@cymplecy posted this code back in January if (msg.payload == 1) { context.set("previousState",!context.get("previousState")) msg.payload = 1 \* context.get("previousState"); return msg; } I have used this a…

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## [Inporting data into InfluxDB database](https://discourse.nodered.org/t/inporting-data-into-influxdb-database/76310)

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**Author:** [@danco](https://discourse.nodered.org/u/danco)\
**Replies:** 18\
**Last updated:** [8 March 2023 20:27 UTC](https://discourse.nodered.org/t/inporting-data-into-influxdb-database/76310 "2023-03-08T20:27:15Z")

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Hi everyone. Im new to IOT and node-red and everything. Im currently working on my final thesis and one part of the thesis is monitoring the temperature and humidity in labs at university and storing that data in Influx. …

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## [Save dashboard chart data in an external file (.txt)](https://discourse.nodered.org/t/save-dashboard-chart-data-in-an-external-file-txt/75382)

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**Author:** [@jagades](https://discourse.nodered.org/u/jagades)\
**Replies:** 6\
**Last updated:** [8 March 2023 19:53 UTC](https://discourse.nodered.org/t/save-dashboard-chart-data-in-an-external-file-txt/75382 "2023-03-08T19:53:48Z")

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Hi. I am working on how to save these temperature vs time data in an external file like a text file. Looking out for advice and assistance.

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## [Safari Browser Slow To Update Node Status](https://discourse.nodered.org/t/safari-browser-slow-to-update-node-status/76314)

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**Author:** [@n61ab](https://discourse.nodered.org/u/n61ab)\
**Replies:** 0\
**Last updated:** [8 March 2023 17:11 UTC](https://discourse.nodered.org/t/safari-browser-slow-to-update-node-status/76314 "2023-03-08T17:11:00Z")

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I am running Mac Safari. Recently, for the Node-Red Editor page, the node status messages and inject status buttons, are not updating unless I refresh the browser. The activity monitor, for the Mac, shows the browser wi…

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## [Help: Node red won't start](https://discourse.nodered.org/t/help-node-red-wont-start/76311)

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**Author:** [@Surefire01](https://discourse.nodered.org/u/Surefire01)\
**Replies:** 4\
**Last updated:** [8 March 2023 17:08 UTC](https://discourse.nodered.org/t/help-node-red-wont-start/76311 "2023-03-08T17:08:58Z")

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My Raspberry Pi hosts an instance of Node Red which runs my central heating system. It got quite cold in the house today and on checking the dashboard and finding it unreachable I thought I'd reboot the Pi and re-start n…

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## [Dumbing down my arduino to work with Node-Red](https://discourse.nodered.org/t/dumbing-down-my-arduino-to-work-with-node-red/76241)

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**Author:** [@richiep](https://discourse.nodered.org/u/richiep)\
**Replies:** 8\
**Last updated:** [8 March 2023 14:19 UTC](https://discourse.nodered.org/t/dumbing-down-my-arduino-to-work-with-node-red/76241 "2023-03-08T14:19:38Z")

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Hey All, I'm a hobbyist and have been developing home automation for about 15 years. I started with just an Arduino and later paired it up with a Raspberry Pi. It's been incredibly slow and arduous but I've stuck with…

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## [Add options into select label (attempt to read options from js files)](https://discourse.nodered.org/t/add-options-into-select-label-attempt-to-read-options-from-js-files/14936)

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**Author:** [@Qin](https://discourse.nodered.org/u/Qin)\
**Replies:** 5\
**Last updated:** [8 March 2023 13:12 UTC](https://discourse.nodered.org/t/add-options-into-select-label-attempt-to-read-options-from-js-files/14936 "2023-03-08T13:12:24Z")

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A primary question，I defined a label in html file, and want to read options from a certain file (js), how can it be realized? e.g.,in html, \< script type="text/x-red" data-template-name=""\> \<select\> func\</select\> \</…

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## [Worldmap Dashboard Map -- Is there a Zoom Extents or Similar?](https://discourse.nodered.org/t/worldmap-dashboard-map-is-there-a-zoom-extents-or-similar/76265)

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**Author:** [@stephenn](https://discourse.nodered.org/u/stephenn)\
**Replies:** 6\
**Last updated:** [8 March 2023 12:10 UTC](https://discourse.nodered.org/t/worldmap-dashboard-map-is-there-a-zoom-extents-or-similar/76265 "2023-03-08T12:10:02Z")

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I am using Worldmap Dashboard node and plotting my wife's and my location pulled from Owntracks onto a Worldmap Dashboard. The map currently centers on the last data point input. Is there a setting that I am missing th…

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## [UI control to update a form](https://discourse.nodered.org/t/ui-control-to-update-a-form/76281)

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**Author:** [@Manuel\_o](https://discourse.nodered.org/u/Manuel_o)\
**Replies:** 1\
**Last updated:** [8 March 2023 12:23 UTC](https://discourse.nodered.org/t/ui-control-to-update-a-form/76281 "2023-03-08T12:23:09Z")

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Hello. I am reading sensor data that are displayed on a table. In the future i also want to control some of the data of my device. For that i created a form with switches. I created a ui control to synconize the tabl…

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## [UI\_Text Display Nodes using Flow.get instead of {{msg.payload}}](https://discourse.nodered.org/t/ui-text-display-nodes-using-flow-get-instead-of-msg-payload/76291)

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**Author:** [@Shyama\_Gupta](https://discourse.nodered.org/u/Shyama_Gupta)\
**Replies:** 1\
**Last updated:** [8 March 2023 12:22 UTC](https://discourse.nodered.org/t/ui-text-display-nodes-using-flow-get-instead-of-msg-payload/76291 "2023-03-08T12:22:41Z")

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How to use flow.get instead of msg.payload into text display node?

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## [Spacer node nodered](https://discourse.nodered.org/t/spacer-node-nodered/76285)

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**Author:** [@daak](https://discourse.nodered.org/u/daak)\
**Replies:** 1\
**Last updated:** [8 March 2023 12:09 UTC](https://discourse.nodered.org/t/spacer-node-nodered/76285 "2023-03-08T12:09:48Z")

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hello I'am a beginner in nodered What's the spacer node? Thank you

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## [List the db connections in MSSQL-CN](https://discourse.nodered.org/t/list-the-db-connections-in-mssql-cn/76283)

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**Author:** [@NoobX](https://discourse.nodered.org/u/NoobX)\
**Replies:** 1\
**Last updated:** [8 March 2023 11:37 UTC](https://discourse.nodered.org/t/list-the-db-connections-in-mssql-cn/76283 "2023-03-08T11:37:14Z")

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Hello Everyone ! I have quite a few connections in MSSQL-CN, established with databases to use the MSSQL PLUS node. I would like to regularly check the list of these connections, as well as their properties: name , se…

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## [FlowForge Agent](https://discourse.nodered.org/t/flowforge-agent/73794)

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**Author:** [@allacmc](https://discourse.nodered.org/u/allacmc)\
**Replies:** 7\
**Last updated:** [8 March 2023 11:03 UTC](https://discourse.nodered.org/t/flowforge-agent/73794 "2023-03-08T11:03:47Z")

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I'm testing flowforge Could someone guide me how the flowforge agent works? I installed the npm package and would like to know if it runs as a service? If I reboot the device does it connect again? And how does the i…

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## [Node Red Modbus RS485 to TCP Bridge](https://discourse.nodered.org/t/node-red-modbus-rs485-to-tcp-bridge/76279)

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**Author:** [@dhruvjhalani95](https://discourse.nodered.org/u/dhruvjhalani95)\
**Replies:** 1\
**Last updated:** [8 March 2023 09:17 UTC](https://discourse.nodered.org/t/node-red-modbus-rs485-to-tcp-bridge/76279 "2023-03-08T09:17:31Z")

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Hi @Steve-Mcl @json\_lame This is in reference to your discussion on the modbus RS485 to TCP bridge. I have a similar use case for one of my projects. Wanted to know if you guys were able to achieve the same using node re…

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## [Usb port reading problem](https://discourse.nodered.org/t/usb-port-reading-problem/75836)

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**Author:** [@RemyH](https://discourse.nodered.org/u/RemyH)\
**Replies:** 25\
**Last updated:** [8 March 2023 08:32 UTC](https://discourse.nodered.org/t/usb-port-reading-problem/75836 "2023-03-08T08:32:59Z")

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Bonjour I installed node-red on a debian 10 VM on proxmox 7 on using the serial port function and I have this problem serial port /dev/ttyUSB1 error: Error: Error: Permission denied, cannot open /dev/ttyUSB1" param…

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## [Einheiten aus Sensordaten entfernten](https://discourse.nodered.org/t/einheiten-aus-sensordaten-entfernten/76210)

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**Author:** [@Jimmy-the-Cat](https://discourse.nodered.org/u/Jimmy-the-Cat)\
**Replies:** 3\
**Last updated:** [8 March 2023 08:03 UTC](https://discourse.nodered.org/t/einheiten-aus-sensordaten-entfernten/76210 "2023-03-08T08:03:07Z")

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Ich möchte eine Steuerung aufbauen. Nutze dazu einen Raspy 4 mit 4GB Unipi 1.1, installierten PiOS Buster sowie Node Red Version 3.3 Sensoren (Bh1750 & Shtc3) sind über den I2c Bus angeschlossen. BH1750 wird mit einem …

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