# Latest

**URL:** https://discourse.nodered.org/latest.md?page=1139

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

**Page:** 1140

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## [Store data on a database](https://discourse.nodered.org/t/store-data-on-a-database/7179)

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**Author:** [@britzz](https://discourse.nodered.org/u/britzz)\
**Replies:** 17\
**Last updated:** [13 March 2020 20:04 UTC](https://discourse.nodered.org/t/store-data-on-a-database/7179 "2020-03-13T20:04:29Z")

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Hi all, I am working on a project with several nodes (Raspberry pi Zero) that are installed on a factory and collect data from several machines. At the moment, each Raspberry pi sends a string via MQTT. On Node-Red I …

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## [How do I restore the Flows?](https://discourse.nodered.org/t/how-do-i-restore-the-flows/23044)

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**Author:** [@GilHub1](https://discourse.nodered.org/u/GilHub1)\
**Replies:** 2\
**Last updated:** [13 March 2020 17:56 UTC](https://discourse.nodered.org/t/how-do-i-restore-the-flows/23044 "2020-03-13T17:56:57Z")

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I am a novice at this. I found my Mac had rebooted and I got all my dashboards back but lost my Flows. All Flow Tabs are there but only parts of flows are present. In the past 30minutes I tried a reload of the page and …

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## [In nodered how to add button using uitemplate](https://discourse.nodered.org/t/in-nodered-how-to-add-button-using-uitemplate/7734)

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**Author:** [@VIKRAMAS](https://discourse.nodered.org/u/VIKRAMAS)\
**Replies:** 2\
**Last updated:** [13 March 2020 16:14 UTC](https://discourse.nodered.org/t/in-nodered-how-to-add-button-using-uitemplate/7734 "2020-03-13T16:14:38Z")

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In node-red how to add button using uitemplate. I want to add button and header above the table but I am not able to add. console.log('length is--------\>'+msg.payload.content.length); msg.template="\<style\>h4 { text-ali…

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## [Barcode display in Dashboard](https://discourse.nodered.org/t/barcode-display-in-dashboard/23022)

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**Author:** [@AmrDwarf](https://discourse.nodered.org/u/AmrDwarf)\
**Replies:** 15\
**Last updated:** [13 March 2020 15:11 UTC](https://discourse.nodered.org/t/barcode-display-in-dashboard/23022 "2020-03-13T15:11:56Z")

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Hi all, I am trying to find a way to display a barcode (code-128) in the node-red dashboard. The barcode needs to be created on the fly from a incoming msg.payload. I have looked in to using jsbarcode in a function no…

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## [Node for a dynamic list](https://discourse.nodered.org/t/node-for-a-dynamic-list/1659)

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**Author:** [@mari12](https://discourse.nodered.org/u/mari12)\
**Replies:** 8\
**Last updated:** [13 March 2020 11:30 UTC](https://discourse.nodered.org/t/node-for-a-dynamic-list/1659 "2020-03-13T11:30:31Z")

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Hey there, I'm working on a project which is about the inventory management. I almost have finished the project but I have one big issue. I need a dynamic list similar to excel. But I found no package in Node-Red whic…

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## [Changing configuration of node-red-contrib-bigtimer](https://discourse.nodered.org/t/changing-configuration-of-node-red-contrib-bigtimer/23068)

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**Author:** [@josekavunkal](https://discourse.nodered.org/u/josekavunkal)\
**Replies:** 2\
**Last updated:** [13 March 2020 10:50 UTC](https://discourse.nodered.org/t/changing-configuration-of-node-red-contrib-bigtimer/23068 "2020-03-13T10:50:59Z")

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I was trying to use node-red-contrib-bigtimer . I did not see a feature to change all the configuration which we set inside the node using Inject or inputs . Say I checked Sun and Mon for scheduling events on these day…

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## [Error log for install of Node Sqlite on Android](https://discourse.nodered.org/t/error-log-for-install-of-node-sqlite-on-android/22966)

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**Author:** [@bracketmounts](https://discourse.nodered.org/u/bracketmounts)\
**Replies:** 6\
**Last updated:** [13 March 2020 10:09 UTC](https://discourse.nodered.org/t/error-log-for-install-of-node-sqlite-on-android/22966 "2020-03-13T10:09:05Z")

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I have tried to install Sqlite from the pallette and manually with the npm i --unsafe-perm node-red-node-sqlite command into Android via Termux. Here are the logs. Can anyone assist me in understanding the issue. I am r…

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## [Is there a way to force MQTT nodes to re-subscribe from the flow?](https://discourse.nodered.org/t/is-there-a-way-to-force-mqtt-nodes-to-re-subscribe-from-the-flow/23051)

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**Author:** [@techraf](https://discourse.nodered.org/u/techraf)\
**Replies:** 7\
**Last updated:** [13 March 2020 09:55 UTC](https://discourse.nodered.org/t/is-there-a-way-to-force-mqtt-nodes-to-re-subscribe-from-the-flow/23051 "2020-03-13T09:55:16Z")

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Let's consider the following: \[{"id":"f484ccd9.7480e","type":"mqtt in","z":"ced90757.b4e1e8","name":"","topic":"vDevice/State","qos":"2","datatype":"auto","broker":"d0a0bfc5.b4176","x":110,"y":220,"wires":\[\["7d4cd0fc.…

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## [Load data to chart in uibuilder](https://discourse.nodered.org/t/load-data-to-chart-in-uibuilder/23035)

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**Author:** [@tristan](https://discourse.nodered.org/u/tristan)\
**Replies:** 3\
**Last updated:** [13 March 2020 09:16 UTC](https://discourse.nodered.org/t/load-data-to-chart-in-uibuilder/23035 "2020-03-13T09:16:45Z")

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I am testing contrib-uibuilder with Apexcharts but, so far can't load data into a line chart which modified from example uibuilder/wiki/Integrating-ApexCharts I am trying to load the data from inject node set to json ou…

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## [Node-Red don't start anymore](https://discourse.nodered.org/t/node-red-dont-start-anymore/23065)

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**Author:** [@bernard](https://discourse.nodered.org/u/bernard)\
**Replies:** 2\
**Last updated:** [13 March 2020 08:59 UTC](https://discourse.nodered.org/t/node-red-dont-start-anymore/23065 "2020-03-13T08:59:24Z")

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13 Mar 08:12:46 - \[info\] Starting flows 13 Mar 08:12:46 - \[info\] \[MyGateway:f458e25d.9a11e\] Server started on port: 1234 13 Mar 08:12:46 - \[info\] \[MyGateway:c3ed1f0b.f828f\] Server started on port: 1234 13 Mar 08:12:46…

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## [How to add a demo user (Closed)](https://discourse.nodered.org/t/how-to-add-a-demo-user-closed/22774)

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**Author:** [@ebolisa](https://discourse.nodered.org/u/ebolisa)\
**Replies:** 19\
**Last updated:** [13 March 2020 08:43 UTC](https://discourse.nodered.org/t/how-to-add-a-demo-user-closed/22774 "2020-03-13T08:43:23Z")

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Hi, I added an admin/password user to the settings file but how do I add a demo/pass user to the ui page? The demo user can activate the switches but cannot enter into the editing mode. TIA UPDATE: Found the solution…

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## [Documentation for exec node](https://discourse.nodered.org/t/documentation-for-exec-node/23061)

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**Author:** [@andrewa](https://discourse.nodered.org/u/andrewa)\
**Replies:** 2\
**Last updated:** [13 March 2020 06:14 UTC](https://discourse.nodered.org/t/documentation-for-exec-node/23061 "2020-03-13T06:14:44Z")

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I know there must be a simple answer, but can anyone tell me where to find the documentation for the exec node? Specifically, I can run the command and receive back the answer in the payload, but I would like to receiv…

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## [Raspberry Pi Zero W OS?](https://discourse.nodered.org/t/raspberry-pi-zero-w-os/23052)

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**Author:** [@rcbuck](https://discourse.nodered.org/u/rcbuck)\
**Replies:** 2\
**Last updated:** [13 March 2020 02:26 UTC](https://discourse.nodered.org/t/raspberry-pi-zero-w-os/23052 "2020-03-13T02:26:10Z")

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What is the recommended OS that should be installed on the Pi Zero that will be running Node-RED?

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## [Best way to restructure the msg.payload](https://discourse.nodered.org/t/best-way-to-restructure-the-msg-payload/23055)

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**Author:** [@gbond](https://discourse.nodered.org/u/gbond)\
**Replies:** 7\
**Last updated:** [12 March 2020 23:11 UTC](https://discourse.nodered.org/t/best-way-to-restructure-the-msg-payload/23055 "2020-03-12T23:11:41Z")

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I am really strugging to know the best way to change the msg.payload if I have 6 device all giving out there msg.payload all the same format how do I pull the elements out (they all have same set of element (eg name,tim…

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## [How to use the node-red customer form](https://discourse.nodered.org/t/how-to-use-the-node-red-customer-form/22717)

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**Author:** [@gbond](https://discourse.nodered.org/u/gbond)\
**Replies:** 10\
**Last updated:** [12 March 2020 23:15 UTC](https://discourse.nodered.org/t/how-to-use-the-node-red-customer-form/22717 "2020-03-12T23:15:43Z")

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Custom user authentication Rather than hardcode users into the settings file, it is also possible to plug in custom code to authenticate users. This makes it possible to integrate with existing authentication schemes. T…

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## [Extracting my valuable data from a msg.payload?](https://discourse.nodered.org/t/extracting-my-valuable-data-from-a-msg-payload/508)

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**Author:** [@hary](https://discourse.nodered.org/u/hary)\
**Replies:** 33\
**Last updated:** [12 March 2020 17:52 UTC](https://discourse.nodered.org/t/extracting-my-valuable-data-from-a-msg-payload/508 "2020-03-12T17:52:45Z")

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Hi I’m sending, with USB trough serial, data from an arduino to my computer where I have node-red running. I can see the entire messages coming in the debug and with all the data to be directed to a file where they ar…

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## [Error when opening dev tools](https://discourse.nodered.org/t/error-when-opening-dev-tools/20394)

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**Author:** [@echtelerp](https://discourse.nodered.org/u/echtelerp)\
**Replies:** 3\
**Last updated:** [12 March 2020 20:33 UTC](https://discourse.nodered.org/t/error-when-opening-dev-tools/20394 "2020-03-12T20:33:57Z")

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Hi Node Red users, I have a docker container with node red. And every time I try to open my browsers developer tools, the container exits with the following error message: You should set your own key using the 'crede…

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## [Node Red filename-timestamp](https://discourse.nodered.org/t/node-red-filename-timestamp/22915)

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**Author:** [@msillano](https://discourse.nodered.org/u/msillano)\
**Replies:** 4\
**Last updated:** [12 March 2020 19:06 UTC](https://discourse.nodered.org/t/node-red-filename-timestamp/22915 "2020-03-12T19:06:09Z")

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Standard timestamps can't be used to build filenames, but sometimes it is useful to have a time indication in a unique file name (logs, data, etc.) This node creates timestamps to be used in filenames, dirs, DB table nam…

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## [Using external software via exec command](https://discourse.nodered.org/t/using-external-software-via-exec-command/23041)

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**Author:** [@Folldoll](https://discourse.nodered.org/u/Folldoll)\
**Replies:** 1\
**Last updated:** [12 March 2020 17:46 UTC](https://discourse.nodered.org/t/using-external-software-via-exec-command/23041 "2020-03-12T17:46:26Z")

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Hey, im currently working on my first project with Node-Red. I'm using an ESP32-Cam to take pictures of my count meter and tried image processing it with ssocr ssocr works pretty simple, you enter the command for the im…

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## [HTTP 413 with a 1.29KB POST?](https://discourse.nodered.org/t/http-413-with-a-1-29kb-post/23036)

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**Author:** [@oliv3](https://discourse.nodered.org/u/oliv3)\
**Replies:** 6\
**Last updated:** [12 March 2020 16:54 UTC](https://discourse.nodered.org/t/http-413-with-a-1-29kb-post/23036 "2020-03-12T16:54:38Z")

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I have an Http In node which fails to accept a 1.29KB POST resulting with this error: PayloadTooLargeError: too many parameters at queryparse (/usr/src/node-red/node\_modules/body-parser/lib/types/urlencoded.js:151:13) …

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## [Can you return a msg object as a pure array?](https://discourse.nodered.org/t/can-you-return-a-msg-object-as-a-pure-array/23033)

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**Author:** [@etawyy](https://discourse.nodered.org/u/etawyy)\
**Replies:** 5\
**Last updated:** [12 March 2020 15:18 UTC](https://discourse.nodered.org/t/can-you-return-a-msg-object-as-a-pure-array/23033 "2020-03-12T15:18:43Z")

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Hi I need my msg object (not msg.payload) to be an array. This is for a cloudant nodes that can make bulk inserts "if the incoming msg is an array." If msg is an array, all elements will be processed using the bul…

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## [Advice on delays and processing](https://discourse.nodered.org/t/advice-on-delays-and-processing/23024)

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**Author:** [@Bigglesuk](https://discourse.nodered.org/u/Bigglesuk)\
**Replies:** 3\
**Last updated:** [12 March 2020 14:16 UTC](https://discourse.nodered.org/t/advice-on-delays-and-processing/23024 "2020-03-12T14:16:26Z")

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hi. I've got node red running monitoring my TV power to an Influx database. thats working fine, but i wanted to take it a step further. My TV keeps being left on but turned off (as in skys off but tv still powered up). I…

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## [Batch node and how to access the content](https://discourse.nodered.org/t/batch-node-and-how-to-access-the-content/22961)

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**Author:** [@Beefy\_carrot](https://discourse.nodered.org/u/Beefy_carrot)\
**Replies:** 4\
**Last updated:** [12 March 2020 14:04 UTC](https://discourse.nodered.org/t/batch-node-and-how-to-access-the-content/22961 "2020-03-12T14:04:50Z")

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How do i access the values in a batch node ? i have set it up so 10 readings from my sensor gets added to the batch file and it then sends it to the cloud. but i would rather have the average number of these ten readings…

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## [\[Solved\] Not able to send Linux command's output to Telegram](https://discourse.nodered.org/t/solved-not-able-to-send-linux-commands-output-to-telegram/22919)

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**Author:** [@RavinderSingh13](https://discourse.nodered.org/u/RavinderSingh13)\
**Replies:** 19\
**Last updated:** [12 March 2020 13:57 UTC](https://discourse.nodered.org/t/solved-not-able-to-send-linux-commands-output-to-telegram/22919 "2020-03-12T13:57:22Z")

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Hello All, Greetings!! I am newbie in Node-Red(BTW GREAT tech and would like to learn it more). I created flow today whose json is as follows. \[{"id":"e8fec1f1.d46c7","type":"tab","label":"/help function in bot.","di…

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## [Node red on ubuntu OS and on Raspberri pi hardware](https://discourse.nodered.org/t/node-red-on-ubuntu-os-and-on-raspberri-pi-hardware/23030)

<div class="topic-metadata">

**Author:** [@saeed1](https://discourse.nodered.org/u/saeed1)\
**Replies:** 5\
**Last updated:** [12 March 2020 13:25 UTC](https://discourse.nodered.org/t/node-red-on-ubuntu-os-and-on-raspberri-pi-hardware/23030 "2020-03-12T13:25:20Z")

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Hi, I have installed ubuntu Mate on my raspberri pi 3B. I want to install node red but no way. Is there a Hardware Problem? I mean ubuntu on raspi and then node-red Thank you

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## [Projects: Push, could not read username](https://discourse.nodered.org/t/projects-push-could-not-read-username/23020)

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**Author:** [@hklages](https://discourse.nodered.org/u/hklages)\
**Replies:** 3\
**Last updated:** [12 March 2020 11:34 UTC](https://discourse.nodered.org/t/projects-push-could-not-read-username/23020 "2020-03-12T11:34:46Z")

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My test system runs on Windows10. Projects are enabled and I cloned my flows from github. Pushing data back results in an endlos loop to enter username, password for this project. The terminal shows the attached error …

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## [How to create a javascript object using change node and flow variable](https://discourse.nodered.org/t/how-to-create-a-javascript-object-using-change-node-and-flow-variable/23023)

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**Author:** [@zenofmud](https://discourse.nodered.org/u/zenofmud)\
**Replies:** 4\
**Last updated:** [12 March 2020 11:22 UTC](https://discourse.nodered.org/t/how-to-create-a-javascript-object-using-change-node-and-flow-variable/23023 "2020-03-12T11:22:02Z")

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I know I can do this in a function node, but want to do it in a change node but I can't figure out how. I want to dynamically change the icon for a button based on a flow contect variable. I use an inject to store an ic…

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## [Embedding NodeRed & Creating nodes](https://discourse.nodered.org/t/embedding-nodered-creating-nodes/22940)

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**Author:** [@manuel-burato](https://discourse.nodered.org/u/manuel-burato)\
**Replies:** 5\
**Last updated:** [12 March 2020 09:05 UTC](https://discourse.nodered.org/t/embedding-nodered-creating-nodes/22940 "2020-03-12T09:05:31Z")

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Hi folks, thanks for furter reading. I'm tryng to integrate nodered with my already existing typescript@node.js app. I already use express as ws, so, by follow embedding guide (https://nodered.org/docs/user-guide/runtim…

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## [Trying to receive Data from Website](https://discourse.nodered.org/t/trying-to-receive-data-from-website/22989)

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**Author:** [@Montezoma](https://discourse.nodered.org/u/Montezoma)\
**Replies:** 7\
**Last updated:** [12 March 2020 07:14 UTC](https://discourse.nodered.org/t/trying-to-receive-data-from-website/22989 "2020-03-12T07:14:08Z")

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Hi, I'm trying to receive data from a website using the Http request Node from https://api.cellmapper.net/v6/getSite?MCC=228&MNC=1&Site=00000&RAT=LTE. When accessing the URL on chrome, I can clearly see the data I want t…

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## [Diagnosing Node-RED crashes](https://discourse.nodered.org/t/diagnosing-node-red-crashes/14330)

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**Author:** [@kolban](https://discourse.nodered.org/u/kolban)\
**Replies:** 8\
**Last updated:** [12 March 2020 06:23 UTC](https://discourse.nodered.org/t/diagnosing-node-red-crashes/14330 "2020-03-12T06:23:53Z")

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While tinkering with Node-RED, I ended up in a situation where each time I start it, it now crashes. The log is as follows 14 Aug 20:40:59 - \[info\] Starting flows 14 Aug 20:40:59 - \[info\] Started flows node-red\[27912\]:…

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