# Latest

**URL:** https://discourse.nodered.org/latest.md?page=1063

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

**Page:** 1064

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## [Error while connecting to Influx DB](https://discourse.nodered.org/t/error-while-connecting-to-influx-db/27376)

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**Author:** [@vraghu1983](https://discourse.nodered.org/u/vraghu1983)\
**Replies:** 10\
**Last updated:** [21 June 2020 18:12 UTC](https://discourse.nodered.org/t/error-while-connecting-to-influx-db/27376 "2020-06-21T18:12:19Z")

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Hi - I am using node-red version 12.16.2 and Influx DB version 1.8.0. Trying a sample flow as attached - and get this error. \[{"id":"3cac3d42.79d3c2","type":"tab","label":"Flow 2","disabled":false,"info":""},{"id":"e74…

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## [FATAL ERROR: Ineffective mark-compacts near heap limit Allocation failed - JavaScript heap out of memory](https://discourse.nodered.org/t/fatal-error-ineffective-mark-compacts-near-heap-limit-allocation-failed-javascript-heap-out-of-memory/18109)

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**Author:** [@cuxcrider](https://discourse.nodered.org/u/cuxcrider)\
**Replies:** 9\
**Last updated:** [21 June 2020 14:31 UTC](https://discourse.nodered.org/t/fatal-error-ineffective-mark-compacts-near-heap-limit-allocation-failed-javascript-heap-out-of-memory/18109 "2020-06-21T14:31:50Z")

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Hi all, I have 8 flows with about 60 buttons/inputs on the dashboard (the standard Node-RED dashboard not the UIBuilder) of each flow. If I only enable 2 or 3 of the flows, all is fine when deploying Node-RED after mak…

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## [Get graph function](https://discourse.nodered.org/t/get-graph-function/28237)

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**Author:** [@calania](https://discourse.nodered.org/u/calania)\
**Replies:** 18\
**Last updated:** [21 June 2020 09:56 UTC](https://discourse.nodered.org/t/get-graph-function/28237 "2020-06-21T09:56:35Z")

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Hello, I have been working on a project where I have a meat thermometer hooked up to Node-Red with a nice dashboard etc. One thing I would want to do (because why not) is for me to be able to set the desired temperature …

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## [Node-RED Breakpoints](https://discourse.nodered.org/t/node-red-breakpoints/2073)

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**Author:** [@machadotiago](https://discourse.nodered.org/u/machadotiago)\
**Replies:** 11\
**Last updated:** [21 June 2020 08:58 UTC](https://discourse.nodered.org/t/node-red-breakpoints/2073 "2020-06-21T08:58:39Z")

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Hello everyone, I was talking with a friend about how we can improve the debugging process of developing a Flow using Node-RED and he came with the idea of having breakpoints like the ones we have in the most famous IDE…

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## [Just checking what happens when you export flows](https://discourse.nodered.org/t/just-checking-what-happens-when-you-export-flows/28676)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 2\
**Last updated:** [21 June 2020 08:55 UTC](https://discourse.nodered.org/t/just-checking-what-happens-when-you-export-flows/28676 "2020-06-21T08:55:20Z")

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I want to check I am not wrong about a theory of what happens when you export a flow. Exporting a flow is easy enough. But what happens if there is a sub-flow in the equation? My take of a sub-flow is that it optimis…

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## [Two dimensional RBE?](https://discourse.nodered.org/t/two-dimensional-rbe/28667)

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**Author:** [@m\_elias](https://discourse.nodered.org/u/m_elias)\
**Replies:** 1\
**Last updated:** [20 June 2020 19:46 UTC](https://discourse.nodered.org/t/two-dimensional-rbe/28667 "2020-06-20T19:46:30Z")

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Currently I have a mqtt in node connected to a function node and then to a telegram out node. The mqtt in node is sub'd to farm/fans/+/state/run. The function node extracts the device name from the topic (in the wildcard…

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## [Sum array values](https://discourse.nodered.org/t/sum-array-values/28664)

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**Author:** [@ghayne](https://discourse.nodered.org/u/ghayne)\
**Replies:** 2\
**Last updated:** [20 June 2020 20:47 UTC](https://discourse.nodered.org/t/sum-array-values/28664 "2020-06-20T20:47:05Z")

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I have an array that looks like: 0: object time: "2020-06-18T23:00:00.000Z" consumption\_value\_inc\_vat: 0.498036 1: object time: "2020-06-18T23:30:00.000Z" consumption\_value\_inc\_vat: 0.4657905 .................... How c…

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## [Displaying temperature sensor from secondary raspberry](https://discourse.nodered.org/t/displaying-temperature-sensor-from-secondary-raspberry/6521)

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**Author:** [@ole88](https://discourse.nodered.org/u/ole88)\
**Replies:** 8\
**Last updated:** [20 June 2020 20:43 UTC](https://discourse.nodered.org/t/displaying-temperature-sensor-from-secondary-raspberry/6521 "2020-06-20T20:43:15Z")

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I have two raspberry pi with node-red running. Both have temperature sensors (DS18B20). Both are on the same local network and no password requirements. (They also run Cayenne, if thats relevant). How can I easiest disp…

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## [Mi Home App /developer mode](https://discourse.nodered.org/t/mi-home-app-developer-mode/3740)

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**Author:** [@mpxd](https://discourse.nodered.org/u/mpxd)\
**Replies:** 20\
**Last updated:** [20 June 2020 19:26 UTC](https://discourse.nodered.org/t/mi-home-app-developer-mode/3740 "2020-06-20T19:26:50Z")

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Hi, This is only indirectly related to Node-RED. But is anyone here using Xiaomi Mijia Smart Home devices? I just bought the Mi Control Hub and cannot set it up to the developer mode necessary to connect it to Node-RED. …

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## [Alexa voice output when light switch is pressed](https://discourse.nodered.org/t/alexa-voice-output-when-light-switch-is-pressed/28656)

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**Author:** [@matze85](https://discourse.nodered.org/u/matze85)\
**Replies:** 6\
**Last updated:** [20 June 2020 13:43 UTC](https://discourse.nodered.org/t/alexa-voice-output-when-light-switch-is-pressed/28656 "2020-06-20T13:43:40Z")

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Please excuse my bad english :wink: for example, i would like to switch my light switch in the kitchen and alexa should give me a voice output, for example the kitchen is now on I use i o broker and node red 1.06 node…

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## [Android TV components](https://discourse.nodered.org/t/android-tv-components/28661)

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**Author:** [@dnoha](https://discourse.nodered.org/u/dnoha)\
**Replies:** 2\
**Last updated:** [20 June 2020 12:57 UTC](https://discourse.nodered.org/t/android-tv-components/28661 "2020-06-20T12:57:34Z")

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Is there components/library for controlling android TV (general, not specific model) ? I want to control Philips android TV, but in install palette tab I can see only Bravia, LG, and some other brands (probably specific…

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## [Passing 2 values to python script using exec node](https://discourse.nodered.org/t/passing-2-values-to-python-script-using-exec-node/28652)

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**Author:** [@xiao1201](https://discourse.nodered.org/u/xiao1201)\
**Replies:** 12\
**Last updated:** [20 June 2020 12:36 UTC](https://discourse.nodered.org/t/passing-2-values-to-python-script-using-exec-node/28652 "2020-06-20T12:36:00Z")

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Hello I have a simple questions pls, I've got a python script which is simply doing addition: #!/usr/bin/python3 import sys def ad(a, b): print(a+b) return a+b ad(int(sys.argv\[1\]), int(sys.argv\[2\])) so in node-re…

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## [\[Announce\] node-red-contrib-twc-weather](https://discourse.nodered.org/t/announce-node-red-contrib-twc-weather/20694)

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**Author:** [@johnwalicki](https://discourse.nodered.org/u/johnwalicki)\
**Replies:** 4\
**Last updated:** [20 June 2020 11:58 UTC](https://discourse.nodered.org/t/announce-node-red-contrib-twc-weather/20694 "2020-06-20T11:58:15Z")

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If you have a Personal Weather Station registered to wunderground and miss getting data into Node-RED, you might want to check out node-red-contrib-twc-weather. It uses the TWC PWS apis instead of the depreciated / suns…

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## [Need someone to look at a bit of a flow for boot detection](https://discourse.nodered.org/t/need-someone-to-look-at-a-bit-of-a-flow-for-boot-detection/28657)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 2\
**Last updated:** [20 June 2020 11:24 UTC](https://discourse.nodered.org/t/need-someone-to-look-at-a-bit-of-a-flow-for-boot-detection/28657 "2020-06-20T11:24:53Z")

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There are two parts to the flow..... (Well, a lot more but I shall keep it as simple as possible.) There are foreign nodes - sorry - but they don't do that much important. The idea: Normally every n seconds a pulse h…

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## [Pull request proposal - temporary node status](https://discourse.nodered.org/t/pull-request-proposal-temporary-node-status/28081)

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**Author:** [@BartButenaers](https://discourse.nodered.org/u/BartButenaers)\
**Replies:** 39\
**Last updated:** [20 June 2020 09:48 UTC](https://discourse.nodered.org/t/pull-request-proposal-temporary-node-status/28081 "2020-06-20T09:48:39Z")

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Hi folks, Currently when you set the status for a node, that status text will be displayed in the flow editor until a new status is set afterwards. Which makes sense of course... However in some situations it is conve…

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## [Trying to get the following data into a ui\_table node?](https://discourse.nodered.org/t/trying-to-get-the-following-data-into-a-ui-table-node/28647)

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**Author:** [@Nodi.Rubrum](https://discourse.nodered.org/u/Nodi.Rubrum)\
**Replies:** 2\
**Last updated:** [20 June 2020 07:27 UTC](https://discourse.nodered.org/t/trying-to-get-the-following-data-into-a-ui-table-node/28647 "2020-06-20T07:27:25Z")

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Trying to get the following data into a ui\_table node? "{"temperature\_C":28.32,"humidity":27.582653862395023,"pressure\_hPa":1002.5767212626166,"model":"BME280","heatIndex":27.222709256127676,"dewPoint\_C":7.8493628836996…

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## [Valid bearer token](https://discourse.nodered.org/t/valid-bearer-token/28633)

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**Author:** [@Etienne](https://discourse.nodered.org/u/Etienne)\
**Replies:** 2\
**Last updated:** [20 June 2020 06:21 UTC](https://discourse.nodered.org/t/valid-bearer-token/28633 "2020-06-20T06:21:07Z")

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Good evening. Does anyone perhaps have a sample flow of how to deal with refreshing a bearer token? I am sending payload to database with the http request node, but have a function node with a valid bearer token for aut…

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## [Complex Context Variables](https://discourse.nodered.org/t/complex-context-variables/28631)

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**Author:** [@dparm](https://discourse.nodered.org/u/dparm)\
**Replies:** 4\
**Last updated:** [19 June 2020 23:15 UTC](https://discourse.nodered.org/t/complex-context-variables/28631 "2020-06-19T23:15:05Z")

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I've been having issues setting and getting data from a context variable named "Data". The variable in question is a JSON object that looks similar to this: Data: { { "I.Data\[0\]": -51, "I.Data\[1\]": -…

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## [Dragging nodes from the palette and align to grid](https://discourse.nodered.org/t/dragging-nodes-from-the-palette-and-align-to-grid/28637)

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**Author:** [@cinhcet](https://discourse.nodered.org/u/cinhcet)\
**Replies:** 4\
**Last updated:** [19 June 2020 20:57 UTC](https://discourse.nodered.org/t/dragging-nodes-from-the-palette-and-align-to-grid/28637 "2020-06-19T20:57:58Z")

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Hi, This is a really minor issue, but something that "annoys" (too hard word) me since the grid feature was introduced (how many years has that been?), is that when dragging a node from the palette it does not snap to t…

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## [Tail Node path issue (Noob)](https://discourse.nodered.org/t/tail-node-path-issue-noob/28620)

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**Author:** [@Sparhawk](https://discourse.nodered.org/u/Sparhawk)\
**Replies:** 2\
**Last updated:** [19 June 2020 20:39 UTC](https://discourse.nodered.org/t/tail-node-path-issue-noob/28620 "2020-06-19T20:39:56Z")

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Hi, (warning, huge nood ahead!) I've got Node-Red set up with Home Assistant (through the supervisor). It has allowed me to create a bunch of great automations so far. Currently I'm trying to read a log file 'OZW\_Log…

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## [Pulseaudio to Dashboard](https://discourse.nodered.org/t/pulseaudio-to-dashboard/27708)

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**Author:** [@blackwellj](https://discourse.nodered.org/u/blackwellj)\
**Replies:** 5\
**Last updated:** [19 June 2020 18:51 UTC](https://discourse.nodered.org/t/pulseaudio-to-dashboard/27708 "2020-06-19T18:51:23Z")

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Hi, I am trying to get audio from a RTL SDR to be played on the dashboard. The SDR outputs different channels to different sinks in Pulseaudio. I would like to be able to mute/unmute each of those sinks on the dashboard,…

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## [Bar chart help please!](https://discourse.nodered.org/t/bar-chart-help-please/28630)

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**Author:** [@TheMaster](https://discourse.nodered.org/u/TheMaster)\
**Replies:** 0\
**Last updated:** [19 June 2020 18:46 UTC](https://discourse.nodered.org/t/bar-chart-help-please/28630 "2020-06-19T18:46:18Z")

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Ok still learning Node-Red and still struggling with it, however, I could do with some help trying to create bar charts, I am bringing in an array like this and spent 2 days on it, so given in and asking for help :slight…

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## [DHT22 AM2302 sensor doesn't work in nodered](https://discourse.nodered.org/t/dht22-am2302-sensor-doesnt-work-in-nodered/27513)

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**Author:** [@Mario-1977](https://discourse.nodered.org/u/Mario-1977)\
**Replies:** 8\
**Last updated:** [19 June 2020 17:27 UTC](https://discourse.nodered.org/t/dht22-am2302-sensor-doesnt-work-in-nodered/27513 "2020-06-19T17:27:52Z")

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Platform: pi 3 model B+ rev.1.3 OS: Rasbian Node-RED: 1.0.5 Node.js: v12.17.0 problem node: node-red-contrib-dht-sensor v1.0.4 bcm2385 revision. a020d3 DHT22 sensor: AM2302 Hello I'm new in using Nodered but I f…

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## [Does "split" node clone messages?](https://discourse.nodered.org/t/does-split-node-clone-messages/28610)

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**Author:** [@greg80303](https://discourse.nodered.org/u/greg80303)\
**Replies:** 13\
**Last updated:** [19 June 2020 16:28 UTC](https://discourse.nodered.org/t/does-split-node-clone-messages/28610 "2020-06-19T16:28:50Z")

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I have a very simple test flow, where I'm executing 2 ls commands in parallel using the split and exec node (in exec mode). One of the commands will fail because of a bad flag, the other will succeed. The successful co…

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## [How to plot 2D data?](https://discourse.nodered.org/t/how-to-plot-2d-data/28616)

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**Author:** [@Hattori](https://discourse.nodered.org/u/Hattori)\
**Replies:** 6\
**Last updated:** [19 June 2020 16:00 UTC](https://discourse.nodered.org/t/how-to-plot-2d-data/28616 "2020-06-19T16:00:28Z")

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this might be a basic question but i cannot figure out how to simply plot 2D data ? I have an array of data that i want to plot in a basic graph, to show the curve. there is maybe node-red-node-ui-vega that seems to be …

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## [Use msg.payload in graphql node](https://discourse.nodered.org/t/use-msg-payload-in-graphql-node/28466)

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**Author:** [@Hattori](https://discourse.nodered.org/u/Hattori)\
**Replies:** 6\
**Last updated:** [19 June 2020 14:28 UTC](https://discourse.nodered.org/t/use-msg-payload-in-graphql-node/28466 "2020-06-19T14:28:11Z")

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hello, i am using node-red-contrib-graphql to send queries to a graphql server. It works with the value directly write into the query, but i actually want to give values to the graphql node and use msg.payload to build …

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## [Dashboard switches only 1 out of 4 at a time](https://discourse.nodered.org/t/dashboard-switches-only-1-out-of-4-at-a-time/28429)

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**Author:** [@freak23](https://discourse.nodered.org/u/freak23)\
**Replies:** 26\
**Last updated:** [19 June 2020 13:19 UTC](https://discourse.nodered.org/t/dashboard-switches-only-1-out-of-4-at-a-time/28429 "2020-06-19T13:19:30Z")

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Hi friends, I‘m facing a problem with the programming of a function within the dashboard switches and can’t figure it out. So I‘ve created my own sprinkler system with some switches on the dashboard to turn the valves o…

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## [Typeerror: send is not a function](https://discourse.nodered.org/t/typeerror-send-is-not-a-function/28602)

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**Author:** [@TinAungKhine](https://discourse.nodered.org/u/TinAungKhine)\
**Replies:** 2\
**Last updated:** [19 June 2020 12:05 UTC](https://discourse.nodered.org/t/typeerror-send-is-not-a-function/28602 "2020-06-19T12:05:58Z")

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Hello everyone, I face the typerror in node red when connect with ubidots. How to solve this problem?

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## [Line chart not showing gap on 'null'](https://discourse.nodered.org/t/line-chart-not-showing-gap-on-null/28586)

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**Author:** [@KoenWindey](https://discourse.nodered.org/u/KoenWindey)\
**Replies:** 4\
**Last updated:** [19 June 2020 11:49 UTC](https://discourse.nodered.org/t/line-chart-not-showing-gap-on-null/28586 "2020-06-19T11:49:25Z")

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Hi everyone, I have a setup whereby an MQTT node is subscribed to a remote site and getting a temperature value. I show the temperature on a line chart. Once in a while the communications drop out and come back. I want…

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## [My node-red-dashboard so slow](https://discourse.nodered.org/t/my-node-red-dashboard-so-slow/28604)

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**Author:** [@annguyen](https://discourse.nodered.org/u/annguyen)\
**Replies:** 2\
**Last updated:** [19 June 2020 10:52 UTC](https://discourse.nodered.org/t/my-node-red-dashboard-so-slow/28604 "2020-06-19T10:52:40Z")

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Hi all! My node-red-dashboard slow response when I touch the icon on the dashboard, how can i fix it?!

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