# Latest

**URL:** https://discourse.nodered.org/latest.md?page=911

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

**Page:** 912

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## [Looking for help with referencing object values](https://discourse.nodered.org/t/looking-for-help-with-referencing-object-values/39096)

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**Author:** [@BenMtl](https://discourse.nodered.org/u/BenMtl)\
**Replies:** 16\
**Last updated:** [14 January 2021 18:04 UTC](https://discourse.nodered.org/t/looking-for-help-with-referencing-object-values/39096 "2021-01-14T18:04:04Z")

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Hi, am very new to node-red and js .. getting the following from an mqtt input and trying to access the valuse in a js function to create an sql statment to post them into sqlite database with the same field names. {"t…

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## [Node-red-blink1 update, but unrelated Travis CI errors?](https://discourse.nodered.org/t/node-red-blink1-update-but-unrelated-travis-ci-errors/39109)

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**Author:** [@todbot](https://discourse.nodered.org/u/todbot)\
**Replies:** 3\
**Last updated:** [14 January 2021 18:00 UTC](https://discourse.nodered.org/t/node-red-blink1-update-but-unrelated-travis-ci-errors/39109 "2021-01-14T18:00:06Z")

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Hi, I made a small change to the node-red-blink1, to update the underlying node-blink1 library version (which works with modern NodeJs). However, on submitting the pull-request, I'm noticing a lot of Travis CI errors …

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## [HA entity msg.payload options?](https://discourse.nodered.org/t/ha-entity-msg-payload-options/39134)

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**Author:** [@appleslices](https://discourse.nodered.org/u/appleslices)\
**Replies:** 0\
**Last updated:** [14 January 2021 17:11 UTC](https://discourse.nodered.org/t/ha-entity-msg-payload-options/39134 "2021-01-14T17:11:10Z")

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Here is my basic question: How do I find the payload options an entity will receive in home assistant? As I stated above, I am using home assistant to control all of my devices and have the node red add-on installed for…

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## [Convert string date format](https://discourse.nodered.org/t/convert-string-date-format/39124)

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**Author:** [@leoborlot](https://discourse.nodered.org/u/leoborlot)\
**Replies:** 6\
**Last updated:** [14 January 2021 17:03 UTC](https://discourse.nodered.org/t/convert-string-date-format/39124 "2021-01-14T17:03:14Z")

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Hi guys, thanks for every help then you give to me. Now i need to solve this. I have a value sting date, I need to reformat it. the orignal --\> new format. 06/11/2020 --\> 2020-11-06 How may I do it?

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## [Node-red-contrib-usb installation not possible](https://discourse.nodered.org/t/node-red-contrib-usb-installation-not-possible/39116)

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**Author:** [@Bobbybau91](https://discourse.nodered.org/u/Bobbybau91)\
**Replies:** 4\
**Last updated:** [14 January 2021 12:07 UTC](https://discourse.nodered.org/t/node-red-contrib-usb-installation-not-possible/39116 "2021-01-14T12:07:35Z")

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Hello, I´m trying to install the package "node-red-contrib-usb", but it aported with error. 2021-01-14T10:25:04.862Z npm install --no-audit --no-update-notifier --save --save-prefix="~" --production node-red-contrib-us…

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## [Etable is empty on browser refresh (node-red-contrib-ui-etable)](https://discourse.nodered.org/t/etable-is-empty-on-browser-refresh-node-red-contrib-ui-etable/39050)

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**Author:** [@yiannis](https://discourse.nodered.org/u/yiannis)\
**Replies:** 2\
**Last updated:** [14 January 2021 12:51 UTC](https://discourse.nodered.org/t/etable-is-empty-on-browser-refresh-node-red-contrib-ui-etable/39050 "2021-01-14T12:51:29Z")

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I removed the options and columns json entry from node's properties and I coded into a function node as msg.config. Unfortunatly table is empty every time I load tab or refresh it. Table shows data when I press a co…

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## [How to remove "Welcome to Node-Red" from Dashboard?](https://discourse.nodered.org/t/how-to-remove-welcome-to-node-red-from-dashboard/39054)

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**Author:** [@temp07](https://discourse.nodered.org/u/temp07)\
**Replies:** 3\
**Last updated:** [14 January 2021 11:51 UTC](https://discourse.nodered.org/t/how-to-remove-welcome-to-node-red-from-dashboard/39054 "2021-01-14T11:51:55Z")

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Hello Everyone! I was wondering whether it is possible to remove or edit the "Welcome to Node-Red" text, that appears on the Dashboard on deploy until the UI loads. I managed to customize the logo from the settings.js …

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## [Unable to delete OPCUA nodes](https://discourse.nodered.org/t/unable-to-delete-opcua-nodes/39067)

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**Author:** [@LucaCarminati](https://discourse.nodered.org/u/LucaCarminati)\
**Replies:** 11\
**Last updated:** [14 January 2021 10:47 UTC](https://discourse.nodered.org/t/unable-to-delete-opcua-nodes/39067 "2021-01-14T10:47:58Z")

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Hi to all, After the update of the OPCUA node to the version 2.92.2 I can't delete the OPC nodes from node red, and in the meantime I can't delete the module from the manage palette. I'm becaming crazy, because if I de…

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## [Mutiple line chart](https://discourse.nodered.org/t/mutiple-line-chart/39103)

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**Author:** [@doomdanger](https://discourse.nodered.org/u/doomdanger)\
**Replies:** 5\
**Last updated:** [14 January 2021 10:40 UTC](https://discourse.nodered.org/t/mutiple-line-chart/39103 "2021-01-14T10:40:32Z")

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Hi i have problem to make multiple line chart and i need some help I get 3data with 1source by "mqtt in" node they are JSON format and use "split "and "switch" convert JSON to number and use this post to manange my func…

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## [Pass MongoDB function to node-red-node-mongodb](https://discourse.nodered.org/t/pass-mongodb-function-to-node-red-node-mongodb/39101)

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**Author:** [@adi-dev](https://discourse.nodered.org/u/adi-dev)\
**Replies:** 4\
**Last updated:** [14 January 2021 09:44 UTC](https://discourse.nodered.org/t/pass-mongodb-function-to-node-red-node-mongodb/39101 "2021-01-14T09:44:38Z")

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I just started to experiment with MongoDB as storage for my flows. I store some weather information using node-red-node-mongodb I would like to execute (MongoDB): db.getCollection('weather').remove({ \_id: { $lt: Object…

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## [Retain slider data](https://discourse.nodered.org/t/retain-slider-data/39098)

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**Author:** [@yawstick1](https://discourse.nodered.org/u/yawstick1)\
**Replies:** 2\
**Last updated:** [14 January 2021 09:35 UTC](https://discourse.nodered.org/t/retain-slider-data/39098 "2021-01-14T09:35:23Z")

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I'm using the code below in a function to control heat on and heat off. It works for one on/off cycle but not a second one unless you move the slider input. I send a sync msg every 30 seconds that triggers the remote tem…

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## [Ui-time-scheduler possible bugs?](https://discourse.nodered.org/t/ui-time-scheduler-possible-bugs/38986)

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**Author:** [@shel](https://discourse.nodered.org/u/shel)\
**Replies:** 11\
**Last updated:** [14 January 2021 07:14 UTC](https://discourse.nodered.org/t/ui-time-scheduler-possible-bugs/38986 "2021-01-14T07:14:24Z")

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In playing with this node I noticed some possible issues or maybe I don't understand I set up three timers as shown in the 'overview' mode when I go to the timer2 selection it still shows timer 1 in the first column I…

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## [How to enable HTTP connection keep-alive or persistent (some call it http reuse)?](https://discourse.nodered.org/t/how-to-enable-http-connection-keep-alive-or-persistent-some-call-it-http-reuse/13807)

<div class="topic-metadata">

**Author:** [@Ibrahim.nezar](https://discourse.nodered.org/u/Ibrahim.nezar)\
**Replies:** 8\
**Last updated:** [13 January 2021 12:21 UTC](https://discourse.nodered.org/t/how-to-enable-http-connection-keep-alive-or-persistent-some-call-it-http-reuse/13807 "2021-01-13T12:21:07Z")

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I'm designing a front-end on Node-RED dashboard which interfaces with a soap API backend that at first it requires an API login in order perform subsequent API requests. The backed-end expect me to first send the credent…

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## [Telegram Question](https://discourse.nodered.org/t/telegram-question/39082)

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**Author:** [@vikozo](https://discourse.nodered.org/u/vikozo)\
**Replies:** 6\
**Last updated:** [14 January 2021 00:16 UTC](https://discourse.nodered.org/t/telegram-question/39082 "2021-01-14T00:16:29Z")

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hello i have two Telegram bot with different Name and different Token of course! should the "chatId" be the same on both? or should it be different? have a nice day vinc

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## [Help needed with JSONata syntax for replacement of key field](https://discourse.nodered.org/t/help-needed-with-jsonata-syntax-for-replacement-of-key-field/39068)

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**Author:** [@SilBlkPanther](https://discourse.nodered.org/u/SilBlkPanther)\
**Replies:** 6\
**Last updated:** [13 January 2021 22:39 UTC](https://discourse.nodered.org/t/help-needed-with-jsonata-syntax-for-replacement-of-key-field/39068 "2021-01-13T22:39:09Z")

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First post, so hi to everybody :slight\_smile: I'm trying to display a mysql result to a chart and for this using JSONata in a change note to rename the key fields of the resulting array to X/Y. Unfortunately one field o…

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## [Mosquitto Config File Path on Ubuntu](https://discourse.nodered.org/t/mosquitto-config-file-path-on-ubuntu/39017)

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**Author:** [@quentinP](https://discourse.nodered.org/u/quentinP)\
**Replies:** 11\
**Last updated:** [13 January 2021 22:37 UTC](https://discourse.nodered.org/t/mosquitto-config-file-path-on-ubuntu/39017 "2021-01-13T22:37:16Z")

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I'm following this tutorial to configure mosquitto. This means that I'm storing my local configuration in /etc/mosquitto/conf.d/default.conf. However, I've just now realized that I can put any password/username and it wi…

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## [Limited memory in ACI for running Node-Red Dashboard nodes](https://discourse.nodered.org/t/limited-memory-in-aci-for-running-node-red-dashboard-nodes/39092)

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**Author:** [@tobiaspe](https://discourse.nodered.org/u/tobiaspe)\
**Replies:** 3\
**Last updated:** [13 January 2021 21:53 UTC](https://discourse.nodered.org/t/limited-memory-in-aci-for-running-node-red-dashboard-nodes/39092 "2021-01-13T21:53:18Z")

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This question is very much related to my previous question on running Node-Red in an ACI. (Deployed flow in Azure Container Instances disappears) I am now able to deploy Node-Red to any ACI, and having the deployed flo…

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## [Add object information into telegram Message](https://discourse.nodered.org/t/add-object-information-into-telegram-message/39095)

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**Author:** [@vikozo](https://discourse.nodered.org/u/vikozo)\
**Replies:** 0\
**Last updated:** [13 January 2021 21:39 UTC](https://discourse.nodered.org/t/add-object-information-into-telegram-message/39095 "2021-01-13T21:39:37Z")

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Hello i have a object like this: /iot12/433MHz : msg.payload : Object object time: "2021-01-13 21:31:28" brand: "OS" model: "Oregon-THGR122N" id: 246 channel: 1 battery\_ok: 1 temperature\_C: 17.2 humidity: 45 i…

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## [Howto take a snapshot from DVR video streams](https://discourse.nodered.org/t/howto-take-a-snapshot-from-dvr-video-streams/39080)

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**Author:** [@jomixl](https://discourse.nodered.org/u/jomixl)\
**Replies:** 6\
**Last updated:** [13 January 2021 21:27 UTC](https://discourse.nodered.org/t/howto-take-a-snapshot-from-dvr-video-streams/39080 "2021-01-13T21:27:54Z")

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hello, i am a real beginner with node-red. since hours i try to get a flow that can take a snapshot from a chinese H264 DVR. All examples i found are working with IP-Cameras. With python and VLC i could get a snapshot f…

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## [Node-red-contrib-chatbot \> Alternative for RasperryPi](https://discourse.nodered.org/t/node-red-contrib-chatbot-alternative-for-rasperrypi/39048)

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**Author:** [@nuki47](https://discourse.nodered.org/u/nuki47)\
**Replies:** 7\
**Last updated:** [13 January 2021 18:59 UTC](https://discourse.nodered.org/t/node-red-contrib-chatbot-alternative-for-rasperrypi/39048 "2021-01-13T18:59:44Z")

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Is there a alternative solution for node-red-contrib-chatbot for a RasperryPi? I want to use this chatbot to send an image via telegram....

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## [Msg.filename logging data](https://discourse.nodered.org/t/msg-filename-logging-data/1117)

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**Author:** [@BowenWT](https://discourse.nodered.org/u/BowenWT)\
**Replies:** 20\
**Last updated:** [13 January 2021 18:56 UTC](https://discourse.nodered.org/t/msg-filename-logging-data/1117 "2021-01-13T18:56:53Z")

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Hi There, I am looking to log some data to a local drive that will have the filename set as the date, thus each new day a new file with data will be added into the directory. I have read that you alter the ‘msg.filename…

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## [Filename with dynamic date in node red](https://discourse.nodered.org/t/filename-with-dynamic-date-in-node-red/15556)

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**Author:** [@vks007](https://discourse.nodered.org/u/vks007)\
**Replies:** 9\
**Last updated:** [13 January 2021 18:55 UTC](https://discourse.nodered.org/t/filename-with-dynamic-date-in-node-red/15556 "2021-01-13T18:55:05Z")

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I am calling the camera snapshot service in nodered and specifying the following as Data : { "filename": "/config/www/bedroom{{ now().strftime(\\"%Y%m%d-%H%M%S\\") }}.jpg" } This works fine if I call the service direct…

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## [User able to add more buttons through the Dashboard](https://discourse.nodered.org/t/user-able-to-add-more-buttons-through-the-dashboard/39076)

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**Author:** [@adamelli](https://discourse.nodered.org/u/adamelli)\
**Replies:** 3\
**Last updated:** [13 January 2021 18:04 UTC](https://discourse.nodered.org/t/user-able-to-add-more-buttons-through-the-dashboard/39076 "2021-01-13T18:04:56Z")

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I would like users to be able to add modules or "things" to however many they want. For example, if they have two "things", the Dashboard would look like this: \[{"id":"6ce77478.d07bcc","type":"ui\_button","z":"97038f39…

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## [Output OPC UA variables in one line without "null"](https://discourse.nodered.org/t/output-opc-ua-variables-in-one-line-without-null/38958)

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**Author:** [@robo7795](https://discourse.nodered.org/u/robo7795)\
**Replies:** 9\
**Last updated:** [13 January 2021 17:45 UTC](https://discourse.nodered.org/t/output-opc-ua-variables-in-one-line-without-null/38958 "2021-01-13T17:45:54Z")

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Hello, I have two different variables that I query via the OPC UA Client. The current value of the two variables is to be written to a CSV file later. Both variables are initialised by two timestamp nodes. At the moment…

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## [Best practice for use of Done and Error](https://discourse.nodered.org/t/best-practice-for-use-of-done-and-error/39063)

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**Author:** [@Colin](https://discourse.nodered.org/u/Colin)\
**Replies:** 8\
**Last updated:** [13 January 2021 17:34 UTC](https://discourse.nodered.org/t/best-practice-for-use-of-done-and-error/39063 "2021-01-13T17:34:19Z")

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Is there a best practice recommendation for the use of done() and error() in contrib nodes? I notice that the email node calls done() or error() when it is finished (as picked up by Complete and Catch nodes) but never b…

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## [Workflow with multiple projects](https://discourse.nodered.org/t/workflow-with-multiple-projects/39073)

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**Author:** [@Edo78](https://discourse.nodered.org/u/Edo78)\
**Replies:** 0\
**Last updated:** [13 January 2021 16:49 UTC](https://discourse.nodered.org/t/workflow-with-multiple-projects/39073 "2021-01-13T16:49:00Z")

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Hi, I'm trying to grasp how projects are suppose to be used. I thought that projects should agevolate collaboration but it looks like I can run only one project per NR instance so if I have my main project and I want t…

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## [How to stop a inject node from working](https://discourse.nodered.org/t/how-to-stop-a-inject-node-from-working/39062)

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**Author:** [@oussama55](https://discourse.nodered.org/u/oussama55)\
**Replies:** 7\
**Last updated:** [13 January 2021 16:30 UTC](https://discourse.nodered.org/t/how-to-stop-a-inject-node-from-working/39062 "2021-01-13T16:30:23Z")

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Hi guys, i have a issue that i couldn't resolve it. Well i want to stop an inject node from sending its peyload to a database node when an incrementation process arrives to 135, i had in my mind to implement a function…

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## [Node-Red v1.2.7 and Dashboard Conflicts](https://discourse.nodered.org/t/node-red-v1-2-7-and-dashboard-conflicts/39060)

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**Author:** [@n61ab](https://discourse.nodered.org/u/n61ab)\
**Replies:** 4\
**Last updated:** [13 January 2021 14:55 UTC](https://discourse.nodered.org/t/node-red-v1-2-7-and-dashboard-conflicts/39060 "2021-01-13T14:55:13Z")

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I built a new system using v1.2.7. Thereafter, I was not able to load both palettes: - node-red-contrib-ui-actions - node-red-dashboard I could load node-red-dashboard by itself. Also, with only the dashboard pal…

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## [Node-red vs Node.js](https://discourse.nodered.org/t/node-red-vs-node-js/39019)

<div class="topic-metadata">

**Author:** [@oliv3](https://discourse.nodered.org/u/oliv3)\
**Replies:** 3\
**Last updated:** [13 January 2021 14:42 UTC](https://discourse.nodered.org/t/node-red-vs-node-js/39019 "2021-01-13T14:42:00Z")

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Hi, I saw various posts about performance, so I'll turn my question as this: Performance-wise, what is the overhead of Node-red (not using the web interface) vs a Node.js application ? Thanks !

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## [Run continuous code](https://discourse.nodered.org/t/run-continuous-code/39058)

<div class="topic-metadata">

**Author:** [@votecoffee](https://discourse.nodered.org/u/votecoffee)\
**Replies:** 1\
**Last updated:** [13 January 2021 13:47 UTC](https://discourse.nodered.org/t/run-continuous-code/39058 "2021-01-13T13:47:04Z")

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I want to run python3 code that is continuous (for camera frame grabbing). NodeRed is my main control program, so looking for a seamless way to integrate. Ultimately I am pushing the result image to mqtt or a webpage (…

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