# Latest

**URL:** https://discourse.nodered.org/latest.md?page=710

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

**Page:** 711

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## [MQTT dynamic setting](https://discourse.nodered.org/t/mqtt-dynamic-setting/52607)

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**Author:** [@ryeger](https://discourse.nodered.org/u/ryeger)\
**Replies:** 12\
**Last updated:** [23 October 2021 18:30 UTC](https://discourse.nodered.org/t/mqtt-dynamic-setting/52607 "2021-10-23T18:30:49Z")

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Hello, Regarding the dynamic subscription of MQTT from version 2.1.0, I've noticed that if you feed a MQTT node with several topics for subscription (one after another as separate msg's), the node will "remember" the to…

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## [How to send authorisation parameters over URL](https://discourse.nodered.org/t/how-to-send-authorisation-parameters-over-url/52621)

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**Author:** [@krish7](https://discourse.nodered.org/u/krish7)\
**Replies:** 0\
**Last updated:** [23 October 2021 16:30 UTC](https://discourse.nodered.org/t/how-to-send-authorisation-parameters-over-url/52621 "2021-10-23T16:30:28Z")

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I am trying to send authorisation parameters ( username and password ) over a http POST request, I would expect an authorisation token as response which I should include in all the future request's header. The session u…

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## [Heating element control](https://discourse.nodered.org/t/heating-element-control/52266)

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**Author:** [@Surefire01](https://discourse.nodered.org/u/Surefire01)\
**Replies:** 11\
**Last updated:** [23 October 2021 16:22 UTC](https://discourse.nodered.org/t/heating-element-control/52266 "2021-10-23T16:22:11Z")

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Hi folks. I'm trying to control the temperature of an element in a fan heater. I can find a ready made thyristor module with an adjustment potentiometer on ebay or Amazon which would work with no problems. I would like …

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## [Generate CSV-file from Influx database](https://discourse.nodered.org/t/generate-csv-file-from-influx-database/52605)

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**Author:** [@HaVi](https://discourse.nodered.org/u/HaVi)\
**Replies:** 7\
**Last updated:** [23 October 2021 14:14 UTC](https://discourse.nodered.org/t/generate-csv-file-from-influx-database/52605 "2021-10-23T14:14:39Z")

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I've been struggling with the following for a while now. A growing Influx DB "luchtdruk" contains the fields luchtdruk and tijd (see picture) over the last weeks. I would like to generate a comma separated CSV file from…

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## [How to run C++ program](https://discourse.nodered.org/t/how-to-run-c-program/52571)

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**Author:** [@picklerick](https://discourse.nodered.org/u/picklerick)\
**Replies:** 8\
**Last updated:** [23 October 2021 11:49 UTC](https://discourse.nodered.org/t/how-to-run-c-program/52571 "2021-10-23T11:49:48Z")

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Im not sure what to do here so i thought i would ask. I have this C++ program installed and working on my Rasp pi3 In CP i can run $ sunsaver then i input the option i want 1-5 to give me the output i want. $ 5 My …

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## [Visual Flow Creator Gauge Will Not Output Correct Value (MindSphere)](https://discourse.nodered.org/t/visual-flow-creator-gauge-will-not-output-correct-value-mindsphere/52413)

<div class="topic-metadata">

**Author:** [@GaugeHelp](https://discourse.nodered.org/u/GaugeHelp)\
**Replies:** 14\
**Last updated:** [23 October 2021 11:21 UTC](https://discourse.nodered.org/t/visual-flow-creator-gauge-will-not-output-correct-value-mindsphere/52413 "2021-10-23T11:21:45Z")

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Hi, I hope everyone is good! So, for the past week or two I have been working on a small project where I have connected a DHT11 sensor to my Raspberry Pi and it is feeding information into Node-Red and I have then onbo…

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## [Initial state of custom button modelled on Debug node](https://discourse.nodered.org/t/initial-state-of-custom-button-modelled-on-debug-node/52603)

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**Author:** [@chris.willing](https://discourse.nodered.org/u/chris.willing)\
**Replies:** 3\
**Last updated:** [23 October 2021 10:14 UTC](https://discourse.nodered.org/t/initial-state-of-custom-button-modelled-on-debug-node/52603 "2021-10-23T10:14:40Z")

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N.B nothing to do with dashboard! I've created a node to work like a push button switch which (de)activates a facility in a connected physical device. The idea comes from the switch of the common Debug node which deacti…

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## [TextArea value is not displaying in the form from the database](https://discourse.nodered.org/t/textarea-value-is-not-displaying-in-the-form-from-the-database/52598)

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**Author:** [@Jeslin](https://discourse.nodered.org/u/Jeslin)\
**Replies:** 1\
**Last updated:** [23 October 2021 08:16 UTC](https://discourse.nodered.org/t/textarea-value-is-not-displaying-in-the-form-from-the-database/52598 "2021-10-23T08:16:22Z")

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\< About //router let item = { author: req.body.author, about: req.body.about, image: new\_image } Authordata.findByIdAndUpdate({\_id:id},item) .then((response)=\>{ if(response){ res.redirect('/a…

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## [Node-RED Con 2021 is up and running](https://discourse.nodered.org/t/node-red-con-2021-is-up-and-running/52602)

<div class="topic-metadata">

**Author:** [@cymplecy](https://discourse.nodered.org/u/cymplecy)\
**Replies:** 0\
**Last updated:** [23 October 2021 07:49 UTC](https://discourse.nodered.org/t/node-red-con-2021-is-up-and-running/52602 "2021-10-23T07:49:13Z")

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## [How to send TCP response to actor !?](https://discourse.nodered.org/t/how-to-send-tcp-response-to-actor/14356)

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**Author:** [@WhiteLion](https://discourse.nodered.org/u/WhiteLion)\
**Replies:** 12\
**Last updated:** [23 October 2021 07:07 UTC](https://discourse.nodered.org/t/how-to-send-tcp-response-to-actor/14356 "2021-10-23T07:07:42Z")

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Hello I am very new to Node-RED and help could be nice: I ve a some actors sending Json values to my Node-RED. These actors have a dynamic IP. So I used a TCP node and listen to the port. I use a function node to get …

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## [Is it possible to search for nodes in the editor?](https://discourse.nodered.org/t/is-it-possible-to-search-for-nodes-in-the-editor/52599)

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**Author:** [@rozek](https://discourse.nodered.org/u/rozek)\
**Replies:** 7\
**Last updated:** [23 October 2021 05:18 UTC](https://discourse.nodered.org/t/is-it-possible-to-search-for-nodes-in-the-editor/52599 "2021-10-23T05:18:53Z")

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Is it possible to search for specific nodes in the Node-RED editor (e.g., by type, by property name (e.g., for a change node) or by text (e.g., in template or function nodes)? And to jump to a found node (and its workspa…

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## [Order of nodes within a palette category](https://discourse.nodered.org/t/order-of-nodes-within-a-palette-category/52569)

<div class="topic-metadata">

**Author:** [@chris.willing](https://discourse.nodered.org/u/chris.willing)\
**Replies:** 2\
**Last updated:** [22 October 2021 22:16 UTC](https://discourse.nodered.org/t/order-of-nodes-within-a-palette-category/52569 "2021-10-22T22:16:27Z")

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I'm developing a number of related nodes which appear in their own category. I'd like to specify the order in which they appear e.g. all input nodes grouped together, all output nodes together; then perhaps alphabetic (o…

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## [How to specify colours for bar chart](https://discourse.nodered.org/t/how-to-specify-colours-for-bar-chart/52536)

<div class="topic-metadata">

**Author:** [@jbudd](https://discourse.nodered.org/u/jbudd)\
**Replies:** 4\
**Last updated:** [22 October 2021 19:51 UTC](https://discourse.nodered.org/t/how-to-specify-colours-for-bar-chart/52536 "2021-10-22T19:51:19Z")

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The Chart node editor dialog gives 9 colours. There are a further 24 colours specified somewhere in the background, but once they are used up the bars on a chart are uncoloured. Can the chart be persuaded to repeat c…

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## [Node label multiline](https://discourse.nodered.org/t/node-label-multiline/52578)

<div class="topic-metadata">

**Author:** [@maira](https://discourse.nodered.org/u/maira)\
**Replies:** 2\
**Last updated:** [22 October 2021 19:45 UTC](https://discourse.nodered.org/t/node-label-multiline/52578 "2021-10-22T19:45:00Z")

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Hi there! I was wondering if there is a way to have more information displayed in node label by making it multiline, like so: (and to have different style for descriptions)

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## [Dashboard tooltips](https://discourse.nodered.org/t/dashboard-tooltips/11874)

<div class="topic-metadata">

**Author:** [@Stylo](https://discourse.nodered.org/u/Stylo)\
**Replies:** 2\
**Last updated:** [22 October 2021 19:44 UTC](https://discourse.nodered.org/t/dashboard-tooltips/11874 "2021-10-22T19:44:20Z")

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Is there a way to add hover-over tooltips to text on the dashboard? I'd like to do this to give other users a hand while they're using my project.

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## [Help to Evaluate Work shifts](https://discourse.nodered.org/t/help-to-evaluate-work-shifts/52585)

<div class="topic-metadata">

**Author:** [@luisof16](https://discourse.nodered.org/u/luisof16)\
**Replies:** 0\
**Last updated:** [22 October 2021 17:52 UTC](https://discourse.nodered.org/t/help-to-evaluate-work-shifts/52585 "2021-10-22T17:52:57Z")

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Hi everybody, I´m newbe, I´m try to evaluate 3 Works Shifts. The shifts must be: Each shift must be flexible to star and finish time They must not overlap other schedule I'm using Input Node with Time Picker configur…

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## [Using flow.get inside a function in a template node](https://discourse.nodered.org/t/using-flow-get-inside-a-function-in-a-template-node/52446)

<div class="topic-metadata">

**Author:** [@RogierQ](https://discourse.nodered.org/u/RogierQ)\
**Replies:** 10\
**Last updated:** [22 October 2021 17:50 UTC](https://discourse.nodered.org/t/using-flow-get-inside-a-function-in-a-template-node/52446 "2021-10-22T17:50:33Z")

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To check if a button that is pressed on a webpage i want to get the last pushed button on a page To do this i want to save the pressed button with flow.set and when a button is pressed again check the current button inp…

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## [Block value "null"?](https://discourse.nodered.org/t/block-value-null/52566)

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**Author:** [@FSHelgeland](https://discourse.nodered.org/u/FSHelgeland)\
**Replies:** 11\
**Last updated:** [22 October 2021 17:50 UTC](https://discourse.nodered.org/t/block-value-null/52566 "2021-10-22T17:50:01Z")

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Node Red version 2.06 running on a RPI. Hello. I am new to programming in Node Red. And now i need some help. I got a flow from "tibber pulse" which sends a feed with values from my main meter. I get watt consumption ev…

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## [Chart - Multiple data overlaying](https://discourse.nodered.org/t/chart-multiple-data-overlaying/52484)

<div class="topic-metadata">

**Author:** [@eddee54455](https://discourse.nodered.org/u/eddee54455)\
**Replies:** 15\
**Last updated:** [22 October 2021 17:42 UTC](https://discourse.nodered.org/t/chart-multiple-data-overlaying/52484 "2021-10-22T17:42:12Z")

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Hi All, I am trying to find a way to overlay additional data on an existing chart - is it possible? Not knowing exactly how to ask the question, I think it may be best to give an example.. I am scanning a variable ran…

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## [MQTT to InfluxDB function problem](https://discourse.nodered.org/t/mqtt-to-influxdb-function-problem/52582)

<div class="topic-metadata">

**Author:** [@siado](https://discourse.nodered.org/u/siado)\
**Replies:** 1\
**Last updated:** [22 October 2021 17:27 UTC](https://discourse.nodered.org/t/mqtt-to-influxdb-function-problem/52582 "2021-10-22T17:27:00Z")

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Greetings all. I'm working on a piece of a flow to store existing MQTT data coming into a dashboard (working) and can not get the function to work to reformat for InfluxDB. All of the existing flow works (albeit cobble…

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## [EXEC node behaves different than regular terminal](https://discourse.nodered.org/t/exec-node-behaves-different-than-regular-terminal/52539)

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**Author:** [@leoneltoledo](https://discourse.nodered.org/u/leoneltoledo)\
**Replies:** 4\
**Last updated:** [22 October 2021 16:59 UTC](https://discourse.nodered.org/t/exec-node-behaves-different-than-regular-terminal/52539 "2021-10-22T16:59:21Z")

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I have noticed before that EXEC node doesn't always behave in the same way as terminal. But this is a particular case Trying to execute a simple command: dig -f lista.txt @1.1.1.1 | grep -E '\<\<\>\>|status|time' This c…

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## [Inject node causing memory leak and node crash eventually](https://discourse.nodered.org/t/inject-node-causing-memory-leak-and-node-crash-eventually/52483)

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**Author:** [@netcyberg](https://discourse.nodered.org/u/netcyberg)\
**Replies:** 3\
**Last updated:** [22 October 2021 13:23 UTC](https://discourse.nodered.org/t/inject-node-causing-memory-leak-and-node-crash-eventually/52483 "2021-10-22T13:23:30Z")

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Hello, Why does the regular inject node with let's say 5sec intervals which is triggering the whole flow - result in memory leak (memory consumed by node-red process/docker container)? If I just disable inject node and…

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## [Number of concurrent open connectioins to Home /assistant](https://discourse.nodered.org/t/number-of-concurrent-open-connectioins-to-home-assistant/52570)

<div class="topic-metadata">

**Author:** [@usherwdp](https://discourse.nodered.org/u/usherwdp)\
**Replies:** 2\
**Last updated:** [22 October 2021 12:37 UTC](https://discourse.nodered.org/t/number-of-concurrent-open-connectioins-to-home-assistant/52570 "2021-10-22T12:37:12Z")

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HI, Bit of a newbie question. I can see on the node-red-log that there are a number of concurrent connections to Home Assistant I'm guessing that each 'state node' opens up a connection and i've got a truck load of th…

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## [Can not get output from function](https://discourse.nodered.org/t/can-not-get-output-from-function/52553)

<div class="topic-metadata">

**Author:** [@Tiredfruit](https://discourse.nodered.org/u/Tiredfruit)\
**Replies:** 10\
**Last updated:** [22 October 2021 12:28 UTC](https://discourse.nodered.org/t/can-not-get-output-from-function/52553 "2021-10-22T12:28:00Z")

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I would like to handle this json file, extract a number from three arrays and make them a new array. The expectation is: \[ \[1,2,3\],\[4,5,6\],\[7,8,9\]........ \] I have changed my code and tested in single javascript teste…

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## [Occupancy with multiple motion detectors?](https://discourse.nodered.org/t/occupancy-with-multiple-motion-detectors/52564)

<div class="topic-metadata">

**Author:** [@derail\_green](https://discourse.nodered.org/u/derail_green)\
**Replies:** 1\
**Last updated:** [22 October 2021 12:20 UTC](https://discourse.nodered.org/t/occupancy-with-multiple-motion-detectors/52564 "2021-10-22T12:20:33Z")

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I have a flow that works as it should, however sometimes the motion detector doesn't detect... The motion detector is an Eve motion sensor that then triggers a NR homekit switch, which then triggers the flow. I am think…

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## [Anybody interested into assisting the Tensorflow.js team?](https://discourse.nodered.org/t/anybody-interested-into-assisting-the-tensorflow-js-team/52544)

<div class="topic-metadata">

**Author:** [@BartButenaers](https://discourse.nodered.org/u/BartButenaers)\
**Replies:** 1\
**Last updated:** [22 October 2021 07:50 UTC](https://discourse.nodered.org/t/anybody-interested-into-assisting-the-tensorflow-js-team/52544 "2021-10-22T07:50:12Z")

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Hi folks, Based on another discussion it became clear that it would be very useful \*if Tensorflow.js would support hardware acceleration on Coral TPU devices via USB. Because then we could make professional AI accessib…

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## [Debug node not allowing to show complete message. looks like option disabled](https://discourse.nodered.org/t/debug-node-not-allowing-to-show-complete-message-looks-like-option-disabled/52562)

<div class="topic-metadata">

**Author:** [@smanjunath211](https://discourse.nodered.org/u/smanjunath211)\
**Replies:** 2\
**Last updated:** [22 October 2021 10:33 UTC](https://discourse.nodered.org/t/debug-node-not-allowing-to-show-complete-message-looks-like-option-disabled/52562 "2021-10-22T10:33:52Z")

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I just updated to Node Red 2.1. Now the debug node in my flow is not allowing to select 'Complete msg. Object'. i can see the option in drill down, but clicking it does not do anything I dont understand what could be …

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## [Can't use $type in jsonata expression](https://discourse.nodered.org/t/cant-use-type-in-jsonata-expression/52560)

<div class="topic-metadata">

**Author:** [@jc-nr](https://discourse.nodered.org/u/jc-nr)\
**Replies:** 2\
**Last updated:** [22 October 2021 09:58 UTC](https://discourse.nodered.org/t/cant-use-type-in-jsonata-expression/52560 "2021-10-22T09:58:32Z")

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Hello, I'm trying to use the $type function ( Object functions · JSONata ) in a jsonata expression. But it seems it's not recognized as a valid function. Error evaluating expression: Attempted to invoke a non-functi…

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## [\[Discussion\]Layout/syntax of the debug in complete object mode](https://discourse.nodered.org/t/discussion-layout-syntax-of-the-debug-in-complete-object-mode/52561)

<div class="topic-metadata">

**Author:** [@cymplecy](https://discourse.nodered.org/u/cymplecy)\
**Replies:** 5\
**Last updated:** [22 October 2021 09:49 UTC](https://discourse.nodered.org/t/discussion-layout-syntax-of-the-debug-in-complete-object-mode/52561 "2021-10-22T09:49:03Z")

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Can we have a little chat about the look of the debug in complete object mode 1st look is great - says we've got an object called msg Clicking on arrow we get In my mind - I think it should say msg: object …

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## [How to Read Data from MS access Database](https://discourse.nodered.org/t/how-to-read-data-from-ms-access-database/52541)

<div class="topic-metadata">

**Author:** [@ajay243](https://discourse.nodered.org/u/ajay243)\
**Replies:** 3\
**Last updated:** [22 October 2021 09:13 UTC](https://discourse.nodered.org/t/how-to-read-data-from-ms-access-database/52541 "2021-10-22T09:13:07Z")

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How to Read data from MS access Database

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