# Latest

**URL:** https://discourse.nodered.org/latest.md?page=880

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

**Page:** 881

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## [Modify the node instance definition from the runtime?](https://discourse.nodered.org/t/modify-the-node-instance-definition-from-the-runtime/41274)

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**Author:** [@zachowj](https://discourse.nodered.org/u/zachowj)\
**Replies:** 4\
**Last updated:** [19 February 2021 21:07 UTC](https://discourse.nodered.org/t/modify-the-node-instance-definition-from-the-runtime/41274 "2021-02-19T21:07:27Z")

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Can you update the values of a node instance from the runtime? I am looking to run data migration on existing nodes when they are loaded.

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## [Feature Request - Off - Auto - On Toggle](https://discourse.nodered.org/t/feature-request-off-auto-on-toggle/40837)

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**Author:** [@SonoraTechnical](https://discourse.nodered.org/u/SonoraTechnical)\
**Replies:** 54\
**Last updated:** [19 February 2021 21:03 UTC](https://discourse.nodered.org/t/feature-request-off-auto-on-toggle/40837 "2021-02-19T21:03:49Z")

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Folks, Doing a fair amount of automation and control using Node-Red. I have a few devices that could benefit from a UI object that allows Users to set the Device ON, OFF or in AUTO .. AUto would allow other logic to ta…

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## [Irrigation dashboard](https://discourse.nodered.org/t/irrigation-dashboard/41287)

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**Author:** [@geppoleppo](https://discourse.nodered.org/u/geppoleppo)\
**Replies:** 4\
**Last updated:** [19 February 2021 21:01 UTC](https://discourse.nodered.org/t/irrigation-dashboard/41287 "2021-02-19T21:01:43Z")

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Hi, I need to create a dashboard for the control of an irrigation system. The plant consists of many devices distributed over a crop. I would like to have a dashboard in which to represent each device in the system as …

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## [Error while inserting uuid into sqlite3 in express](https://discourse.nodered.org/t/error-while-inserting-uuid-into-sqlite3-in-express/41302)

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**Author:** [@jackcarver12](https://discourse.nodered.org/u/jackcarver12)\
**Replies:** 6\
**Last updated:** [19 February 2021 19:04 UTC](https://discourse.nodered.org/t/error-while-inserting-uuid-into-sqlite3-in-express/41302 "2021-02-19T19:04:54Z")

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I required an error while inserting this dataset in my database: I am programing on express/node.js this.db.run("INSERT INTO bestellung(rid,bid,tableno,drink,price,validation) VALUES(\`"+ridJSON.id+"\`,\`"+bidJSON.id+"\`,"+…

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## [Serving my own catalog via Node-RED](https://discourse.nodered.org/t/serving-my-own-catalog-via-node-red/41040)

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**Author:** [@nlecaude](https://discourse.nodered.org/u/nlecaude)\
**Replies:** 15\
**Last updated:** [19 February 2021 19:06 UTC](https://discourse.nodered.org/t/serving-my-own-catalog-via-node-red/41040 "2021-02-19T19:06:38Z")

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Hello, I'm working on my own Docker image and would like to have a custom node catalog available. Ideally I'd like to host that catalog myself from within Node-RED. Is there some way I could access RED.httpAdmin from w…

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## [NR UI no longer comes up, red.js file corrupted?](https://discourse.nodered.org/t/nr-ui-no-longer-comes-up-red-js-file-corrupted/41246)

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**Author:** [@justin](https://discourse.nodered.org/u/justin)\
**Replies:** 2\
**Last updated:** [19 February 2021 18:54 UTC](https://discourse.nodered.org/t/nr-ui-no-longer-comes-up-red-js-file-corrupted/41246 "2021-02-19T18:54:31Z")

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Hi. I have been using node red for a little while now, have a bunch of flows and custom developed nodes, etc. This morning all of a sudden the UI on a particular machine stopped loading. If I open the developer console I…

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## [Cant start after reboot](https://discourse.nodered.org/t/cant-start-after-reboot/41312)

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**Author:** [@saulcereto](https://discourse.nodered.org/u/saulcereto)\
**Replies:** 2\
**Last updated:** [19 February 2021 17:31 UTC](https://discourse.nodered.org/t/cant-start-after-reboot/41312 "2021-02-19T17:31:54Z")

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I have node red install in raspberri pi with openhabian with no issues in the last year but...... After reboot node red is not starting. I tried to start as a service and dont start neither The only way to start is doi…

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## [Virtual Keyboard a little help please](https://discourse.nodered.org/t/virtual-keyboard-a-little-help-please/39873)

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**Author:** [@FatPilot](https://discourse.nodered.org/u/FatPilot)\
**Replies:** 28\
**Last updated:** [19 February 2021 17:22 UTC](https://discourse.nodered.org/t/virtual-keyboard-a-little-help-please/39873 "2021-02-19T17:22:22Z")

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Hi everyone, I am using the Virtual Keyboard as modified by @hugobox and shared on Node-Red flows. I have sent @hugobox a message but as yet no reply. link to node I'm trying to modify it to display the text that has…

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## [Artless gauge loses value and graphic after reload window](https://discourse.nodered.org/t/artless-gauge-loses-value-and-graphic-after-reload-window/41284)

<div class="topic-metadata">

**Author:** [@sfedo](https://discourse.nodered.org/u/sfedo)\
**Replies:** 5\
**Last updated:** [19 February 2021 16:35 UTC](https://discourse.nodered.org/t/artless-gauge-loses-value-and-graphic-after-reload-window/41284 "2021-02-19T16:35:58Z")

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Hello, I'm using artless gauge, and I love it, but I have still some troubles. When I deploy my flow, then everything is fine and it looks like this: so current value is incoming and updating, the max value is set o…

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## [Write group of data to Influxdb](https://discourse.nodered.org/t/write-group-of-data-to-influxdb/41248)

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**Author:** [@davidz](https://discourse.nodered.org/u/davidz)\
**Replies:** 14\
**Last updated:** [19 February 2021 16:13 UTC](https://discourse.nodered.org/t/write-group-of-data-to-influxdb/41248 "2021-02-19T16:13:40Z")

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Is there a way to write an array of data set to Influxdb efficiently, but give each data set a different time stamp? For example, I have the following array of size 5, and I want to write them to influxdb and give them d…

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## [Totalizer difference example](https://discourse.nodered.org/t/totalizer-difference-example/40949)

<div class="topic-metadata">

**Author:** [@bkenobi](https://discourse.nodered.org/u/bkenobi)\
**Replies:** 31\
**Last updated:** [19 February 2021 16:13 UTC](https://discourse.nodered.org/t/totalizer-difference-example/40949 "2021-02-19T16:13:25Z")

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I have a couple sensors that return a running sum of usage (power meter, rain gauge) and I need to split it out for calculating period based usage. This is a common question I've seen posted in various places, but the c…

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## [\[New Feature Release\] node-red-contrib-uibuilder - v3.2.0](https://discourse.nodered.org/t/new-feature-release-node-red-contrib-uibuilder-v3-2-0/41267)

<div class="topic-metadata">

**Author:** [@TotallyInformation](https://discourse.nodered.org/u/TotallyInformation)\
**Replies:** 1\
**Last updated:** [19 February 2021 15:58 UTC](https://discourse.nodered.org/t/new-feature-release-node-red-contrib-uibuilder-v3-2-0/41267 "2021-02-19T15:58:36Z")

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Hi all, since skiing was off the menu this year, I've taken the time to add some new features to uibuilder that have been on the backlog for quite a while. This version is currently on GitHub and you can install from th…

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## [Stack of images](https://discourse.nodered.org/t/stack-of-images/41180)

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**Author:** [@mune](https://discourse.nodered.org/u/mune)\
**Replies:** 11\
**Last updated:** [19 February 2021 15:50 UTC](https://discourse.nodered.org/t/stack-of-images/41180 "2021-02-19T15:50:54Z")

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The idea is to display an image with all the heaters on the bottom and the display over that image a transparent (GIF) layer that if the heater is on it has red flame else it has a black one. The images are equal size. I…

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## [Dynamically sending MQTT Messages from Object Array](https://discourse.nodered.org/t/dynamically-sending-mqtt-messages-from-object-array/41297)

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**Author:** [@quentinP](https://discourse.nodered.org/u/quentinP)\
**Replies:** 8\
**Last updated:** [19 February 2021 14:38 UTC](https://discourse.nodered.org/t/dynamically-sending-mqtt-messages-from-object-array/41297 "2021-02-19T14:38:58Z")

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I have an array of objects stored in msg.myRecipes\[\] collected from an SQL query. From this array I am retreiving data to create a topic and a payload to send to the broker. Each row corresponds to a message sent over a …

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## [Serial String combine](https://discourse.nodered.org/t/serial-string-combine/41288)

<div class="topic-metadata">

**Author:** [@Schnigge5](https://discourse.nodered.org/u/Schnigge5)\
**Replies:** 9\
**Last updated:** [19 February 2021 14:08 UTC](https://discourse.nodered.org/t/serial-string-combine/41288 "2021-02-19T14:08:49Z")

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Hi there. I'm too stupid for that shit :crazy\_face: I read out the serial Interface and get every 0,01s a ASCII-String with 8 HEX Values. Now I have to modify some of the Values because its ASCII and there is an '=' f…

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## [Control dashboard UI switch via MQTT payload](https://discourse.nodered.org/t/control-dashboard-ui-switch-via-mqtt-payload/41299)

<div class="topic-metadata">

**Author:** [@Radaga](https://discourse.nodered.org/u/Radaga)\
**Replies:** 4\
**Last updated:** [19 February 2021 14:05 UTC](https://discourse.nodered.org/t/control-dashboard-ui-switch-via-mqtt-payload/41299 "2021-02-19T14:05:24Z")

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I have an esp32 sending data to a MQTT server and a node-red flow subscribed which then turns relays on and off. All of the controls work perfectly but I would like to have something in the UI showing if the relays are o…

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## [BigSSH, odd behavior with Win10 OpenSSH Server?](https://discourse.nodered.org/t/bigssh-odd-behavior-with-win10-openssh-server/40713)

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**Author:** [@westek](https://discourse.nodered.org/u/westek)\
**Replies:** 11\
**Last updated:** [19 February 2021 12:42 UTC](https://discourse.nodered.org/t/bigssh-odd-behavior-with-win10-openssh-server/40713 "2021-02-19T12:42:27Z")

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I have OpenSSH installed on multiple Win10 workstations. I use BigSSH to issue remote WOL commands on a Samba PDC with no problem. But as soon as I attempt to issue remote SSH commands to the Windows workstations, I get …

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## [Command design pattern](https://discourse.nodered.org/t/command-design-pattern/35461)

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**Author:** [@r0ller](https://discourse.nodered.org/u/r0ller)\
**Replies:** 3\
**Last updated:** [19 February 2021 12:08 UTC](https://discourse.nodered.org/t/command-design-pattern/35461 "2021-02-19T12:08:04Z")

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Hi All, I've been using node red for a while now and just like others (see: https://discourse.nodered.org/t/guidelines-and-design-principles-for-node-red-users/7238 ) I also pondered about some design principles accordi…

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## [Timestamp conversion going wrong](https://discourse.nodered.org/t/timestamp-conversion-going-wrong/41110)

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**Author:** [@haskle](https://discourse.nodered.org/u/haskle)\
**Replies:** 6\
**Last updated:** [19 February 2021 11:42 UTC](https://discourse.nodered.org/t/timestamp-conversion-going-wrong/41110 "2021-02-19T11:42:16Z")

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I want to convert a json(?) timestamp from, eg, 1613498523 to "human readable"; I have tried using the moment node, but whatever output format I choose, the date is right but the time is always 00:00 (or 00:00:00) - whi…

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## [Latency on JSON schema validation with ajv module](https://discourse.nodered.org/t/latency-on-json-schema-validation-with-ajv-module/41289)

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**Author:** [@episensor](https://discourse.nodered.org/u/episensor)\
**Replies:** 2\
**Last updated:** [19 February 2021 11:16 UTC](https://discourse.nodered.org/t/latency-on-json-schema-validation-with-ajv-module/41289 "2021-02-19T11:16:27Z")

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Hi all, I'm importing the ajv module (for JSON schema validation) into NodeRED from npm to the GlobalContext as follows: functionGlobalContext = { ajv:require(/path/to/node\_modules/ajv'), and then using it in a f…

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## [MariaDB innodb Tablespace](https://discourse.nodered.org/t/mariadb-innodb-tablespace/41242)

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**Author:** [@FatPilot](https://discourse.nodered.org/u/FatPilot)\
**Replies:** 1\
**Last updated:** [19 February 2021 10:56 UTC](https://discourse.nodered.org/t/mariadb-innodb-tablespace/41242 "2021-02-19T10:56:33Z")

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Hi Everyone, I'm on a very steep learning curve here. I know this is not a Node-Red issue just hoping someone on here may be able to answer my question. I understand most databasey things having been a Visual FoxPro d…

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## [\[OT\] Strange Arduino IDE problem](https://discourse.nodered.org/t/ot-strange-arduino-ide-problem/41247)

<div class="topic-metadata">

**Author:** [@Colin](https://discourse.nodered.org/u/Colin)\
**Replies:** 5\
**Last updated:** [19 February 2021 10:50 UTC](https://discourse.nodered.org/t/ot-strange-arduino-ide-problem/41247 "2021-02-19T10:50:55Z")

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I know this isn't a node-red issue, but possibly someone here can help me out with a very odd issue. I am using the Arduino IDE to program a Wemos D1 Mini, which I have done before. I want it to have a fixed ip addres…

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## [Node-red last will message](https://discourse.nodered.org/t/node-red-last-will-message/41214)

<div class="topic-metadata">

**Author:** [@tetrived](https://discourse.nodered.org/u/tetrived)\
**Replies:** 8\
**Last updated:** [19 February 2021 10:35 UTC](https://discourse.nodered.org/t/node-red-last-will-message/41214 "2021-02-19T10:35:26Z")

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Hello All, We are trying to simulate lastwill message scenario using node-red tool. We configured lastwill topic and message in the message tab. We are trying to close the node-red command window but it seems it is alwa…

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## [Flying a Tello Drone via Node-Red Dashboard and PYTHON](https://discourse.nodered.org/t/flying-a-tello-drone-via-node-red-dashboard-and-python/41231)

<div class="topic-metadata">

**Author:** [@G-Rizzle](https://discourse.nodered.org/u/G-Rizzle)\
**Replies:** 3\
**Last updated:** [19 February 2021 09:55 UTC](https://discourse.nodered.org/t/flying-a-tello-drone-via-node-red-dashboard-and-python/41231 "2021-02-19T09:55:34Z")

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hello, as a university project I am thinking about buying a Tello Drone and flying it via a Node-Red Dashboard. I have already found a module in the node-red palette GitHub - johnwalicki/Node-RED-Tello-Control: Node-RE…

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## [Extracting specific data from string](https://discourse.nodered.org/t/extracting-specific-data-from-string/41073)

<div class="topic-metadata">

**Author:** [@Jvalour](https://discourse.nodered.org/u/Jvalour)\
**Replies:** 5\
**Last updated:** [19 February 2021 09:07 UTC](https://discourse.nodered.org/t/extracting-specific-data-from-string/41073 "2021-02-19T09:07:09Z")

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I receive a string of data from my sensor via MQTT but I do not know how to retrieve a specific variable (e.g. temperature) from the string. From the debug window: msg.payload : string\[323\] {'data\_format': 10, 'humidi…

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## [HTTP and cookies](https://discourse.nodered.org/t/http-and-cookies/41282)

<div class="topic-metadata">

**Author:** [@bigfeetneedbigboots](https://discourse.nodered.org/u/bigfeetneedbigboots)\
**Replies:** 0\
**Last updated:** [19 February 2021 06:59 UTC](https://discourse.nodered.org/t/http-and-cookies/41282 "2021-02-19T06:59:06Z")

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G'day Node-REDers I have an Enphase PV (Solar) system and it has some URLs that I can use to get system statistics from. Some of those URLs don't require authentication, some accept basic authentication and another one …

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## [Javascript Methods in Functions](https://discourse.nodered.org/t/javascript-methods-in-functions/41209)

<div class="topic-metadata">

**Author:** [@AutomationExpert](https://discourse.nodered.org/u/AutomationExpert)\
**Replies:** 5\
**Last updated:** [19 February 2021 00:56 UTC](https://discourse.nodered.org/t/javascript-methods-in-functions/41209 "2021-02-19T00:56:43Z")

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Is there a way to use javascript methods in functions like those used with arrays (.concat(), .join(), etc) in other javascript applications? Whenever I attempt to use these methods I receive an error that says it is no…

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## [Import Flows using API](https://discourse.nodered.org/t/import-flows-using-api/40355)

<div class="topic-metadata">

**Author:** [@Henjoe](https://discourse.nodered.org/u/Henjoe)\
**Replies:** 5\
**Last updated:** [19 February 2021 00:22 UTC](https://discourse.nodered.org/t/import-flows-using-api/40355 "2021-02-19T00:22:34Z")

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Hi Node-red Experts, I know there is an API for node-red, but I am not sure if can we import flows using it's API? I don't want my end-user to login on my node-red and go to Menu -\> Import Flows, but instead, I want to…

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## [Set secret key of “encrypt node” from flow or global variable in node red](https://discourse.nodered.org/t/set-secret-key-of-encrypt-node-from-flow-or-global-variable-in-node-red/40729)

<div class="topic-metadata">

**Author:** [@karthiksuresh6666](https://discourse.nodered.org/u/karthiksuresh6666)\
**Replies:** 2\
**Last updated:** [18 February 2021 23:18 UTC](https://discourse.nodered.org/t/set-secret-key-of-encrypt-node-from-flow-or-global-variable-in-node-red/40729 "2021-02-18T23:18:55Z")

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How can we set the flow/global variable value to secret key in "Encrypt Node".

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## [Stream data from C program to node-red dashboard?](https://discourse.nodered.org/t/stream-data-from-c-program-to-node-red-dashboard/41213)

<div class="topic-metadata">

**Author:** [@a1ex](https://discourse.nodered.org/u/a1ex)\
**Replies:** 32\
**Last updated:** [18 February 2021 21:13 UTC](https://discourse.nodered.org/t/stream-data-from-c-program-to-node-red-dashboard/41213 "2021-02-18T21:13:47Z")

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Say I want to stream the results of calculations from a C program to node-red for real-time visualization. The C program and node-red run on the same PC so it seems I can establish a connection with virtual TCP/IP ports…

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