# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=495

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

**Page:** 496

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## [Error in huejay](https://discourse.nodered.org/t/error-in-huejay/50968)

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**Author:** [@Falfango](https://discourse.nodered.org/u/Falfango)\
**Replies:** 14\
**Last updated:** [15 September 2021 04:27 UTC](https://discourse.nodered.org/t/error-in-huejay/50968 "2021-09-15T04:27:10Z")

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Hi, Since several days, my flow restarts several times a day (1 - 5 times / day). I use noed-red v2.05 on a pi4. Sep 13 14:19:34 PI2 Node-RED\[5594\]: HuejayError: Huejay: read ECONNRESET Sep 13 14:19:34 PI2 Node-RED\[55…

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## [Authentication Help Needed](https://discourse.nodered.org/t/authentication-help-needed/7492)

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**Author:** [@mikerenna](https://discourse.nodered.org/u/mikerenna)\
**Replies:** 19\
**Last updated:** [15 September 2021 03:11 UTC](https://discourse.nodered.org/t/authentication-help-needed/7492 "2021-09-15T03:11:13Z")

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I'm pulling my hair out trying to get basic username:password security working. I'm able to modify setting.js and get the login box to show up, but it does not accept my credentials. i was not able to install the admin t…

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## [Node-red on raspberryPi zero W](https://discourse.nodered.org/t/node-red-on-raspberrypi-zero-w/50874)

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**Author:** [@alpha815](https://discourse.nodered.org/u/alpha815)\
**Replies:** 17\
**Last updated:** [14 September 2021 21:37 UTC](https://discourse.nodered.org/t/node-red-on-raspberrypi-zero-w/50874 "2021-09-14T21:37:22Z")

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Last week i completed weather monitoring project using esp-32 and some sensors to monitor temperature, humidity, barometric pressure, CO2, VOC. I am planning to add few more to monitor Luminosity and UV too. Data is feed…

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## [Temporary flow working stops or deploy stalling until pressing the enter key in log window](https://discourse.nodered.org/t/temporary-flow-working-stops-or-deploy-stalling-until-pressing-the-enter-key-in-log-window/50966)

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**Author:** [@Peter99](https://discourse.nodered.org/u/Peter99)\
**Replies:** 10\
**Last updated:** [14 September 2021 20:34 UTC](https://discourse.nodered.org/t/temporary-flow-working-stops-or-deploy-stalling-until-pressing-the-enter-key-in-log-window/50966 "2021-09-14T20:34:23Z")

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Hi. I'm doing my small project. I have used Tcp-In node to connect aduino33 IOT with wifi. sometimes when econnreset error occurs then node-red flow stops until I press enter key manually in log window. Also when i depl…

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## [Question about gauge node](https://discourse.nodered.org/t/question-about-gauge-node/51026)

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**Author:** [@k5map](https://discourse.nodered.org/u/k5map)\
**Replies:** 0\
**Last updated:** [14 September 2021 16:10 UTC](https://discourse.nodered.org/t/question-about-gauge-node/51026 "2021-09-14T16:10:22Z")

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I've successfully passed the ui\_control.min and max values from my flow. But I've not been successful passing the Units string from my flow via ui\_control.options.symbol. Am I using the correct reference?

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## [Beginners questions on handling strings and using NodeRED](https://discourse.nodered.org/t/beginners-questions-on-handling-strings-and-using-nodered/50745)

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**Author:** [@elschopi](https://discourse.nodered.org/u/elschopi)\
**Replies:** 19\
**Last updated:** [14 September 2021 15:46 UTC](https://discourse.nodered.org/t/beginners-questions-on-handling-strings-and-using-nodered/50745 "2021-09-14T15:46:45Z")

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Hello everyone, I use MQTT to receive a string that contains sensor data. That string is formatted like this: "ID;TIME;VAL1;VAL2;VAL3;VAL4;VAL5" where the capitalized names are strings of varying length. So far I was …

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## [How to use turf.js in node-red](https://discourse.nodered.org/t/how-to-use-turf-js-in-node-red/50830)

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**Author:** [@trickermkd](https://discourse.nodered.org/u/trickermkd)\
**Replies:** 8\
**Last updated:** [14 September 2021 15:11 UTC](https://discourse.nodered.org/t/how-to-use-turf-js-in-node-red/50830 "2021-09-14T15:11:15Z")

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I am working on Node-Red, and for my project I also use turf.js, which can be installed on node-red as well ( node-red-contrib-turf ). This is how the structure looks: With functionOne having this code: msg.topic =…

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## [Node-red-node-rbe conflict](https://discourse.nodered.org/t/node-red-node-rbe-conflict/51014)

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**Author:** [@k5map](https://discourse.nodered.org/u/k5map)\
**Replies:** 3\
**Last updated:** [14 September 2021 14:34 UTC](https://discourse.nodered.org/t/node-red-node-rbe-conflict/51014 "2021-09-14T14:34:44Z")

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I've setup my node-red RPi and have added multiple nodes without any problems. Today I wanted to install the node-red-node-rbe but when I go into Palette to install it, I have the "conflict" message. It states the conf…

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## [Problems to install Node-red in Ubuntu 18.04](https://discourse.nodered.org/t/problems-to-install-node-red-in-ubuntu-18-04/50991)

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**Author:** [@arielperez](https://discourse.nodered.org/u/arielperez)\
**Replies:** 2\
**Last updated:** [14 September 2021 13:16 UTC](https://discourse.nodered.org/t/problems-to-install-node-red-in-ubuntu-18-04/50991 "2021-09-14T13:16:08Z")

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Hi, Before begining I want to clarify that I am a Windows user, so please, be patient! :slight\_smile: I have just install node-red following the link: https://www.techunits.com/topics/setup-guides/step-by-step-guide-to…

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## [Access problem to influxDB from node Red - different Server](https://discourse.nodered.org/t/access-problem-to-influxdb-from-node-red-different-server/50986)

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**Author:** [@vikozo](https://discourse.nodered.org/u/vikozo)\
**Replies:** 22\
**Last updated:** [14 September 2021 11:52 UTC](https://discourse.nodered.org/t/access-problem-to-influxdb-from-node-red-different-server/50986 "2021-09-14T11:52:20Z")

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hello nodered, influxdb1.8.x and grafana are on 3 different VM. After i had to reboot the Node itself the vm rebootet without error but nodered can't write down to influxdb grafana can't read data from influxdb graf…

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## [Subflow flow.$parent with env. variable as path possible?](https://discourse.nodered.org/t/subflow-flow-parent-with-env-variable-as-path-possible/51000)

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**Author:** [@novski](https://discourse.nodered.org/u/novski)\
**Replies:** 0\
**Last updated:** [14 September 2021 08:50 UTC](https://discourse.nodered.org/t/subflow-flow-parent-with-env-variable-as-path-possible/51000 "2021-09-14T08:50:42Z")

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Im wondering if it is somehow possible to save a variable from within a subflow and change node to a dynamic path like: flow.$parent.$env('Device Name').temperature or simmilar. to get a flow variable stored in the pat…

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## [Create mongodb database using another mongodb in node red](https://discourse.nodered.org/t/create-mongodb-database-using-another-mongodb-in-node-red/50964)

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**Author:** [@abhilash](https://discourse.nodered.org/u/abhilash)\
**Replies:** 2\
**Last updated:** [14 September 2021 06:51 UTC](https://discourse.nodered.org/t/create-mongodb-database-using-another-mongodb-in-node-red/50964 "2021-09-14T06:51:02Z")

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Hi Guys, We have one large database in mongoDB and we would like to create a summary mongoDB database based on the large database using Node-red. Can anyone help to achieve this please? thanks in advance, Aby

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## [Ubuntu Server 21.04 GPIO Not Working](https://discourse.nodered.org/t/ubuntu-server-21-04-gpio-not-working/50947)

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**Author:** [@mdazmir](https://discourse.nodered.org/u/mdazmir)\
**Replies:** 5\
**Last updated:** [14 September 2021 02:46 UTC](https://discourse.nodered.org/t/ubuntu-server-21-04-gpio-not-working/50947 "2021-09-14T02:46:53Z")

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Based on this post, as of Linux kernel 5.11, the old methods of communicating with header pins on the Raspberry Pi no longer work. This means packages such as RPi.GPIO no longer function properly with newer kernels hence…

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## [Script Examples](https://discourse.nodered.org/t/script-examples/50962)

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**Author:** [@rcalves](https://discourse.nodered.org/u/rcalves)\
**Replies:** 4\
**Last updated:** [13 September 2021 22:02 UTC](https://discourse.nodered.org/t/script-examples/50962 "2021-09-13T22:02:28Z")

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Good morning, I'm new to the world of node-red, I come from back-end programming with .netCore. I saw that inside node, you can use functions, so I would like to ask for tutorials, handouts, example scripts. Apparently t…

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## [Power outage recording](https://discourse.nodered.org/t/power-outage-recording/50931)

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**Author:** [@shel](https://discourse.nodered.org/u/shel)\
**Replies:** 8\
**Last updated:** [13 September 2021 21:50 UTC](https://discourse.nodered.org/t/power-outage-recording/50931 "2021-09-13T21:50:13Z")

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The power here fails fairly often. Not every day or even every week but probably every three weeks or so. Sometimes I'm not home so I got curious as to when the power failed and when it came back on. Nothing earth shatte…

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## [Flow set "array error" using mqtt topic](https://discourse.nodered.org/t/flow-set-array-error-using-mqtt-topic/50973)

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**Author:** [@Lost](https://discourse.nodered.org/u/Lost)\
**Replies:** 4\
**Last updated:** [13 September 2021 20:36 UTC](https://discourse.nodered.org/t/flow-set-array-error-using-mqtt-topic/50973 "2021-09-13T20:36:57Z")

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Hi. I am trying to save a thermostat mode to a flow variable using the msg.topic but it does not work as expected. Flow: Result: How can i save it based on the MQTT adress without getting all those array enteri…

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## [2 instances of node red](https://discourse.nodered.org/t/2-instances-of-node-red/50944)

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**Author:** [@cthompstone](https://discourse.nodered.org/u/cthompstone)\
**Replies:** 3\
**Last updated:** [13 September 2021 20:17 UTC](https://discourse.nodered.org/t/2-instances-of-node-red/50944 "2021-09-13T20:17:18Z")

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Hi Guys, I have a version 1.x node red running on a ubuntu box. It uses a signal messenging node which I think won't work under node 2.x (the developer seems to have stopped working on this node). I'd like to move to …

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## [Feature Request: Better/Group Comments](https://discourse.nodered.org/t/feature-request-better-group-comments/50978)

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**Author:** [@Dustin](https://discourse.nodered.org/u/Dustin)\
**Replies:** 5\
**Last updated:** [13 September 2021 19:52 UTC](https://discourse.nodered.org/t/feature-request-better-group-comments/50978 "2021-09-13T19:52:13Z")

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Anyone ever seen how Unreal Engine handles their comments? Can group nodes inside a comment, and color coordinate them. I've always thought this would be an amazing addition to Node-Red's "Comment" node. The ability to …

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## [Flow for State-Change notification - question](https://discourse.nodered.org/t/flow-for-state-change-notification-question/50805)

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**Author:** [@Wurzelpeter](https://discourse.nodered.org/u/Wurzelpeter)\
**Replies:** 4\
**Last updated:** [13 September 2021 16:32 UTC](https://discourse.nodered.org/t/flow-for-state-change-notification-question/50805 "2021-09-13T16:32:22Z")

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Hello there! I wanted to make a notification flow, that gets the average electricity price aep from a sensor and compares that to the current electricity price cep from another sensor. This flow sends a notification to…

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## [Soap Server on Node-Red](https://discourse.nodered.org/t/soap-server-on-node-red/50907)

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**Author:** [@aderici](https://discourse.nodered.org/u/aderici)\
**Replies:** 4\
**Last updated:** [13 September 2021 13:13 UTC](https://discourse.nodered.org/t/soap-server-on-node-red/50907 "2021-09-13T13:13:06Z")

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Hi, i'd like to build a soap server based on node-red. While there are existing contrib nodes, they all target opening an additional port for soap server. I'm looking for a way to create a soap server and having it in th…

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## [Dynamic Objectpath for extracting an element](https://discourse.nodered.org/t/dynamic-objectpath-for-extracting-an-element/50951)

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**Author:** [@protonmw](https://discourse.nodered.org/u/protonmw)\
**Replies:** 16\
**Last updated:** [13 September 2021 12:40 UTC](https://discourse.nodered.org/t/dynamic-objectpath-for-extracting-an-element/50951 "2021-09-13T12:40:30Z")

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Hi all! I want to extract a message element by a known path, but dynamically (via dropwdown or inputstring). How can I do this? Thanks for help on this!

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## [Uibuilder sqlite security.js](https://discourse.nodered.org/t/uibuilder-sqlite-security-js/48542)

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**Author:** [@amitsinghio](https://discourse.nodered.org/u/amitsinghio)\
**Replies:** 4\
**Last updated:** [28 July 2021 09:05 UTC](https://discourse.nodered.org/t/uibuilder-sqlite-security-js/48542 "2021-07-28T09:05:37Z")

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Hello Folks, It's me again, with another rather stupid question. Shame on me :no\_mouth: How do I connect to a sqlite (node-red-node-sqlite) from within the security.js file? Or do I have to send a message with uibuilde…

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## [Error: EIO: i/o error, read (line:44)](https://discourse.nodered.org/t/error-eio-i-o-error-read-line-44/50945)

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**Author:** [@opakornpko](https://discourse.nodered.org/u/opakornpko)\
**Replies:** 0\
**Last updated:** [13 September 2021 07:33 UTC](https://discourse.nodered.org/t/error-eio-i-o-error-read-line-44/50945 "2021-09-13T07:33:53Z")

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Hello, I want to ask a problem without doing anything. Recognized by the information not sent to the database. At the node setting "Error: EIO: i/o error, read (line:44)" I tried to reboot but it show "-sh: Reboot: com…

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## [WorldMap Panel - How to stop the "reset" of the map view after 30 seconds?](https://discourse.nodered.org/t/worldmap-panel-how-to-stop-the-reset-of-the-map-view-after-30-seconds/50929)

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**Author:** [@boscloud](https://discourse.nodered.org/u/boscloud)\
**Replies:** 1\
**Last updated:** [13 September 2021 07:26 UTC](https://discourse.nodered.org/t/worldmap-panel-how-to-stop-the-reset-of-the-map-view-after-30-seconds/50929 "2021-09-13T07:26:23Z")

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I'm using the WorldMap Panel heavily right now, and I noticed that after 30 seconds, my map will always "reset" to the base GPS coordinates and zoom level. This is a pain when working on the map in detail. Has anyone se…

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## [Switch feedback](https://discourse.nodered.org/t/switch-feedback/50925)

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**Author:** [@holographic](https://discourse.nodered.org/u/holographic)\
**Replies:** 5\
**Last updated:** [13 September 2021 07:06 UTC](https://discourse.nodered.org/t/switch-feedback/50925 "2021-09-13T07:06:48Z")

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Hello all, I would like to integrate a switch feedback. Difficult to explain: There are 3 switches that output different values in PWM. Switch 1 =100%. Switch 2 = 50% Switch 3 = 20% When I press switch 1, switch 2…

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## [Smartfox pro in Node-Red](https://discourse.nodered.org/t/smartfox-pro-in-node-red/50923)

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**Author:** [@whabby](https://discourse.nodered.org/u/whabby)\
**Replies:** 1\
**Last updated:** [13 September 2021 07:00 UTC](https://discourse.nodered.org/t/smartfox-pro-in-node-red/50923 "2021-09-13T07:00:22Z")

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Hi everyone Im trying to visualize the values of smartfox pro in node-red. Is there anybody with experience in that theme? The final goal is to manage a wallbox "go-eCharger" depending the values of smartfox. Thanks for…

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## [Ui-table dsiplay control](https://discourse.nodered.org/t/ui-table-dsiplay-control/48780)

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**Author:** [@trust](https://discourse.nodered.org/u/trust)\
**Replies:** 1\
**Last updated:** [13 September 2021 05:29 UTC](https://discourse.nodered.org/t/ui-table-dsiplay-control/48780 "2021-09-13T05:29:57Z")

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I have a table which is updated about once a second. It's sized so that if it gets bigger, it still fits in the same display area, but scroll bars appear and it can be scrolled. But each time it's updated. the view rese…

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## [Tabulator from google sheet](https://discourse.nodered.org/t/tabulator-from-google-sheet/50933)

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**Author:** [@xpqrs97](https://discourse.nodered.org/u/xpqrs97)\
**Replies:** 0\
**Last updated:** [13 September 2021 01:48 UTC](https://discourse.nodered.org/t/tabulator-from-google-sheet/50933 "2021-09-13T01:48:29Z")

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Hi i just wanna ask something, is there any possibilities that i use the tabulator table but the data is fetched directly from google sheet? no any data inserted inside the tabulator code. if yes how do i declare the dat…

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## [Battery monitor kWh reporting](https://discourse.nodered.org/t/battery-monitor-kwh-reporting/50877)

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**Author:** [@Sammerdan](https://discourse.nodered.org/u/Sammerdan)\
**Replies:** 9\
**Last updated:** [12 September 2021 18:43 UTC](https://discourse.nodered.org/t/battery-monitor-kwh-reporting/50877 "2021-09-12T18:43:54Z")

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Hi! I've got next situation: My victron battery monitor gives via MQTT all kind of info. But unfortunately I don't see the kWh that day charged or discharged. I do see what at that moment is the charge or discharge. …

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## [Weird issues trying to update](https://discourse.nodered.org/t/weird-issues-trying-to-update/50895)

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**Author:** [@boskoe](https://discourse.nodered.org/u/boskoe)\
**Replies:** 18\
**Last updated:** [12 September 2021 16:49 UTC](https://discourse.nodered.org/t/weird-issues-trying-to-update/50895 "2021-09-12T16:49:28Z")

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Hi, I have an Intel NUC that' has been running Debian 10 reliably for several years, I use it as a general purpose Linux IOT server. I used @scargill "The Script" to install all the IOT programs. I consider myself moder…

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