# Latest

**URL:** https://discourse.nodered.org/latest.md?page=847

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

**Page:** 848

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## [Access from mobile phone](https://discourse.nodered.org/t/access-from-mobile-phone/43533)

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**Author:** [@Herbert](https://discourse.nodered.org/u/Herbert)\
**Replies:** 0\
**Last updated:** [2 April 2021 05:55 UTC](https://discourse.nodered.org/t/access-from-mobile-phone/43533 "2021-04-02T05:55:37Z")

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Hello, normally I change something in the Nodered (not in the Dashboar) from computer and from Android mobile phone. Since I secured the access from the IP:1880, I have no access from my mobile phone Chrome. I cannot …

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## [How to save data in variables to process them](https://discourse.nodered.org/t/how-to-save-data-in-variables-to-process-them/43531)

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**Author:** [@BrokenBeat](https://discourse.nodered.org/u/BrokenBeat)\
**Replies:** 3\
**Last updated:** [2 April 2021 03:15 UTC](https://discourse.nodered.org/t/how-to-save-data-in-variables-to-process-them/43531 "2021-04-02T03:15:22Z")

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I am using nodes "inject" as test data that would arrive every second, later using node "function" I am saving the data in different variables identifying them with the "msg.topic" to be able to identify the data, separa…

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## [Dashboard on 320 by 240 screen](https://discourse.nodered.org/t/dashboard-on-320-by-240-screen/43485)

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**Author:** [@jamesd256](https://discourse.nodered.org/u/jamesd256)\
**Replies:** 9\
**Last updated:** [2 April 2021 00:32 UTC](https://discourse.nodered.org/t/dashboard-on-320-by-240-screen/43485 "2021-04-02T00:32:02Z")

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Hi, Really enjoying this so far, trying to use NR with Home Assistant for home autiomation. I am looking to install switchplates in place of light sockets. I am running PI Zeros with 320x240 screens. I would like to …

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## [Manage serial port with a button](https://discourse.nodered.org/t/manage-serial-port-with-a-button/581)

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**Author:** [@sawsen](https://discourse.nodered.org/u/sawsen)\
**Replies:** 3\
**Last updated:** [1 April 2021 21:55 UTC](https://discourse.nodered.org/t/manage-serial-port-with-a-button/581 "2021-04-01T21:55:03Z")

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Hi everyone, i’m new with node red, and i need your help please, i want to control the serial port using a button, that’s mean that when i want to close the serial port, i click on the button, is it realistic?

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## [Is it possible to run nr on a apache webserver?](https://discourse.nodered.org/t/is-it-possible-to-run-nr-on-a-apache-webserver/43498)

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**Author:** [@YT2310](https://discourse.nodered.org/u/YT2310)\
**Replies:** 3\
**Last updated:** [1 April 2021 21:46 UTC](https://discourse.nodered.org/t/is-it-possible-to-run-nr-on-a-apache-webserver/43498 "2021-04-01T21:46:50Z")

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Hey there, I m just wondering if its possible to run nr on a web server?

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## [Speedtest node error](https://discourse.nodered.org/t/speedtest-node-error/43265)

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**Author:** [@manjha](https://discourse.nodered.org/u/manjha)\
**Replies:** 22\
**Last updated:** [1 April 2021 21:25 UTC](https://discourse.nodered.org/t/speedtest-node-error/43265 "2021-04-01T21:25:50Z")

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Since several months, I run speedtest (the node) at 08:00 in the morning just to get a daity check on network performance. I do this on a Raspberry Pi 4B 8GB at home, but also on a R-Pi 3B in my vacation house. Both ins…

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## [Node-RED choose dynamically data series to visualize in embedded Grafana plots](https://discourse.nodered.org/t/node-red-choose-dynamically-data-series-to-visualize-in-embedded-grafana-plots/43504)

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**Author:** [@torrdan](https://discourse.nodered.org/u/torrdan)\
**Replies:** 2\
**Last updated:** [1 April 2021 20:29 UTC](https://discourse.nodered.org/t/node-red-choose-dynamically-data-series-to-visualize-in-embedded-grafana-plots/43504 "2021-04-01T20:29:04Z")

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Hi, I use node-red to collect measurements data from several sensors. I store those values in an influxDB database (each sensor is saved as a different field, e.g. temperature 1, pressure1, humidity1, etc..) and plot in…

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## [Basic help sending an MQTT payload via a slider](https://discourse.nodered.org/t/basic-help-sending-an-mqtt-payload-via-a-slider/43516)

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**Author:** [@jamesd256](https://discourse.nodered.org/u/jamesd256)\
**Replies:** 2\
**Last updated:** [1 April 2021 19:38 UTC](https://discourse.nodered.org/t/basic-help-sending-an-mqtt-payload-via-a-slider/43516 "2021-04-01T19:38:53Z")

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Hi, Just migrating a dashboard I had set up inside HA so that it becomes just an MQTT based version. In the HA version, I'm connecting a dashboard slider to a call service node, and can manipulate the payload on the ca…

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## [Input box validation failure](https://discourse.nodered.org/t/input-box-validation-failure/43513)

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**Author:** [@Paul-Reed](https://discourse.nodered.org/u/Paul-Reed)\
**Replies:** 10\
**Last updated:** [1 April 2021 19:30 UTC](https://discourse.nodered.org/t/input-box-validation-failure/43513 "2021-04-01T19:30:54Z")

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I've spotted an annoying problem with node-red-contrib-google-smarthome where the node config has two options, selectable via a tick box; The first option is to use google authentication (preferred option) The second…

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## [How to select a file from my client nodered](https://discourse.nodered.org/t/how-to-select-a-file-from-my-client-nodered/43417)

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**Author:** [@SergioRT](https://discourse.nodered.org/u/SergioRT)\
**Replies:** 3\
**Last updated:** [1 April 2021 19:11 UTC](https://discourse.nodered.org/t/how-to-select-a-file-from-my-client-nodered/43417 "2021-04-01T19:11:47Z")

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My nodered server is on a raspberry 4. I access it from a PC on my internal network. I would like to be able to select one (or more files) from my PC to be able to transfer them by ftp to the raspberry. I cannot find a f…

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## [Trouble with function](https://discourse.nodered.org/t/trouble-with-function/43479)

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**Author:** [@mattk](https://discourse.nodered.org/u/mattk)\
**Replies:** 4\
**Last updated:** [1 April 2021 17:29 UTC](https://discourse.nodered.org/t/trouble-with-function/43479 "2021-04-01T17:29:05Z")

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Hi, IT guy pretending to understand how to script this function and not getting it. Below function is working. The reason I did it this way was to simply get the right output to BLYNK app. However there are some values…

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## [PiGPIOd Freezing or Stops Responding: How to Debug?](https://discourse.nodered.org/t/pigpiod-freezing-or-stops-responding-how-to-debug/43492)

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**Author:** [@Noschvie](https://discourse.nodered.org/u/Noschvie)\
**Replies:** 4\
**Last updated:** [1 April 2021 17:16 UTC](https://discourse.nodered.org/t/pigpiod-freezing-or-stops-responding-how-to-debug/43492 "2021-04-01T17:16:15Z")

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Continuing the discussion from PiGPIOd Freezing or Stops Responding?: same here... @Nodi.Rubrum : did you get this resolved? RPi3+ with NR running as docker container (nodered/node-red:latest-12) and with an optocoupl…

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## [Sending and receiving info from serial port and download file](https://discourse.nodered.org/t/sending-and-receiving-info-from-serial-port-and-download-file/43414)

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**Author:** [@Lousa](https://discourse.nodered.org/u/Lousa)\
**Replies:** 3\
**Last updated:** [1 April 2021 17:05 UTC](https://discourse.nodered.org/t/sending-and-receiving-info-from-serial-port-and-download-file/43414 "2021-04-01T17:05:19Z")

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Hello! I'm new in node-red and i'm doing a project where i have a graphical interface with some numeric parameters to be inserted by the user, send to a serial port (mbed) and receive another information to the same ser…

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## [\[red\] Uncaught Exception: Pointers as to a starting point](https://discourse.nodered.org/t/red-uncaught-exception-pointers-as-to-a-starting-point/43242)

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**Author:** [@Diez66](https://discourse.nodered.org/u/Diez66)\
**Replies:** 2\
**Last updated:** [1 April 2021 16:44 UTC](https://discourse.nodered.org/t/red-uncaught-exception-pointers-as-to-a-starting-point/43242 "2021-04-01T16:44:13Z")

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OK, I see one of these each day and I have had a look around the forum and after trying to work out which node may be causing this I am stumped. Don't know how to proceed! I have tidied up my many flows and now they run…

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## [Node-Red & Mopidy](https://discourse.nodered.org/t/node-red-mopidy/41944)

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**Author:** [@mellow](https://discourse.nodered.org/u/mellow)\
**Replies:** 1\
**Last updated:** [1 April 2021 16:42 UTC](https://discourse.nodered.org/t/node-red-mopidy/41944 "2021-04-01T16:42:20Z")

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Hey y'all, I downloaded node-red-contrib-mopidy but I'm having no luck calling the method "tracklist.add". I am calling the method with the "uris" parameter (which is not deprecated), example: uris = \["spotify:track:4Oa…

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## [Timestamp converting](https://discourse.nodered.org/t/timestamp-converting/43461)

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**Author:** [@Pecako2001](https://discourse.nodered.org/u/Pecako2001)\
**Replies:** 7\
**Last updated:** [1 April 2021 15:19 UTC](https://discourse.nodered.org/t/timestamp-converting/43461 "2021-04-01T15:19:51Z")

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Hello, I'm new to this forum so i dont know where to put this Topic. I have a problem. I'm trying to publish 2 variables from mqtt with corrensponding date and time into a CSV file. But the date and time i'm given wi…

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## [How to make condition with msg.payload = \[empty\]](https://discourse.nodered.org/t/how-to-make-condition-with-msg-payload-empty/19396)

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**Author:** [@Yortz](https://discourse.nodered.org/u/Yortz)\
**Replies:** 7\
**Last updated:** [1 April 2021 12:55 UTC](https://discourse.nodered.org/t/how-to-make-condition-with-msg-payload-empty/19396 "2021-04-01T12:55:32Z")

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Hi. I have a question. I select data from influxdb in 3 condition 1.now() 2.now() - 1d 3.now() - 7d My problem is when I tried to get data with \[ now() - 1d \] & \[ now() - 7d \] influx in node return empty msg.payload …

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## [Detecting "null" flow variables](https://discourse.nodered.org/t/detecting-null-flow-variables/14569)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 5\
**Last updated:** [1 April 2021 12:54 UTC](https://discourse.nodered.org/t/detecting-null-flow-variables/14569 "2021-04-01T12:54:34Z")

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I have this bit of code: var w = flow.get("who\_1") || {}; var p = msg.payload; if (w.length \> 0) { // do stuff here. The idea is that at/on first invocation the flow.get("who\_1") will not be set. I was under the …

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## [Only output a msg when the payload is in a different temperature range](https://discourse.nodered.org/t/only-output-a-msg-when-the-payload-is-in-a-different-temperature-range/43501)

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**Author:** [@paulot88](https://discourse.nodered.org/u/paulot88)\
**Replies:** 2\
**Last updated:** [1 April 2021 10:23 UTC](https://discourse.nodered.org/t/only-output-a-msg-when-the-payload-is-in-a-different-temperature-range/43501 "2021-04-01T10:23:20Z")

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I have a switch node with different output depending on temperature range. Like 0-5, 5-10 and 10+ Now there is output when the temperature changes from 6 to 7 and 7 to 8. I want outputs only when there is a change in ra…

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## [Show ip camera in dashboard and store prefixed buffer video](https://discourse.nodered.org/t/show-ip-camera-in-dashboard-and-store-prefixed-buffer-video/39572)

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**Author:** [@Lupin\_III](https://discourse.nodered.org/u/Lupin_III)\
**Replies:** 52\
**Last updated:** [1 April 2021 10:10 UTC](https://discourse.nodered.org/t/show-ip-camera-in-dashboard-and-store-prefixed-buffer-video/39572 "2021-04-01T10:10:44Z")

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Hi, what I'm achieving to do is display an IP camera on the dashboard and store a prefix buffer video when I need, but starting some seconds before my trigger. Thanks to all support inside the forum I'm able to display …

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## [Starting node-red](https://discourse.nodered.org/t/starting-node-red/42693)

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**Author:** [@Eintracht00](https://discourse.nodered.org/u/Eintracht00)\
**Replies:** 16\
**Last updated:** [1 April 2021 10:05 UTC](https://discourse.nodered.org/t/starting-node-red/42693 "2021-04-01T10:05:14Z")

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Hello, i normally start node-red with my computer {local} but today i want to start with "node-red". 16 Mar 06:45:55 - \[info\] Node-RED version: v1.2.9 16 Mar 06:45:55 - \[info\] Node.js version: v15.10.0 16 Mar 06:45…

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## [Error saving flows: settings.getUserSettings is not a function](https://discourse.nodered.org/t/error-saving-flows-settings-getusersettings-is-not-a-function/43502)

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**Author:** [@SuperNinja](https://discourse.nodered.org/u/SuperNinja)\
**Replies:** 0\
**Last updated:** [1 April 2021 09:49 UTC](https://discourse.nodered.org/t/error-saving-flows-settings-getusersettings-is-not-a-function/43502 "2021-04-01T09:49:25Z")

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Hi all, I specify: I am using Node Red Desktop @sakazuki on a Win10 PC. Following a Win10 crash and a forced shutdown, I had trouble relaunching NRD, but I managed to get my Flow back to work, but I can't save the cha…

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## [Creating Custom Config node and adding reference of that config to all normal node created](https://discourse.nodered.org/t/creating-custom-config-node-and-adding-reference-of-that-config-to-all-normal-node-created/43399)

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**Author:** [@Sudthakur](https://discourse.nodered.org/u/Sudthakur)\
**Replies:** 8\
**Last updated:** [1 April 2021 09:04 UTC](https://discourse.nodered.org/t/creating-custom-config-node-and-adding-reference-of-that-config-to-all-normal-node-created/43399 "2021-04-01T09:04:36Z")

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Hi All, I have created more than 10 nodes for different purposes, in which I am supplying the ClientId and ClientSecret to connect the API in all node. This I have achieved, but now the new requirement to put both commo…

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## [Get last item on sharepoint](https://discourse.nodered.org/t/get-last-item-on-sharepoint/43491)

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**Author:** [@Tchomduang](https://discourse.nodered.org/u/Tchomduang)\
**Replies:** 1\
**Last updated:** [1 April 2021 08:32 UTC](https://discourse.nodered.org/t/get-last-item-on-sharepoint/43491 "2021-04-01T08:32:41Z")

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Hello. I need to get last item in list on sharepoint. But i can't solve it.Are you can tell me.

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## [Deleting part of message payload using a function from a memory context](https://discourse.nodered.org/t/deleting-part-of-message-payload-using-a-function-from-a-memory-context/43453)

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**Author:** [@kubasmyk](https://discourse.nodered.org/u/kubasmyk)\
**Replies:** 5\
**Last updated:** [1 April 2021 07:46 UTC](https://discourse.nodered.org/t/deleting-part-of-message-payload-using-a-function-from-a-memory-context/43453 "2021-04-01T07:46:24Z")

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Hi I want to save myself a lot of effort writing a code to delete parts of the messages. There is probably a better way to do that but I rather do it this way. I have writen a function inside a function node which to m…

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## [Connecting different script tags](https://discourse.nodered.org/t/connecting-different-script-tags/43455)

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**Author:** [@ivexy24](https://discourse.nodered.org/u/ivexy24)\
**Replies:** 25\
**Last updated:** [1 April 2021 07:26 UTC](https://discourse.nodered.org/t/connecting-different-script-tags/43455 "2021-04-01T07:26:29Z")

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Is there any way to connect script tag (HTML) with script tag(JS) in HTML file of node-red.

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## [Delay node rate limit](https://discourse.nodered.org/t/delay-node-rate-limit/43489)

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**Author:** [@slopsjon](https://discourse.nodered.org/u/slopsjon)\
**Replies:** 0\
**Last updated:** [1 April 2021 05:43 UTC](https://discourse.nodered.org/t/delay-node-rate-limit/43489 "2021-04-01T05:43:36Z")

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Node-red v1.2.9 If I use a delay node in rate limit mode for all messages it will send the first message straight away and then the next messages after the delay. \[{"id":"bd97c8ed.a5c8d8","type":"delay","z":"e003c02f.a…

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## [Oracle db connection](https://discourse.nodered.org/t/oracle-db-connection/43415)

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**Author:** [@Kins](https://discourse.nodered.org/u/Kins)\
**Replies:** 1\
**Last updated:** [1 April 2021 00:08 UTC](https://discourse.nodered.org/t/oracle-db-connection/43415 "2021-04-01T00:08:34Z")

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Can someone help me with the oracle database connection in node-red. I've installed the node-red-contrib-oracledb-mod node. I'm not able to proceed ahead with the connection. I don't understand what is the oracle insta…

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## [Shelly & API Flow etc](https://discourse.nodered.org/t/shelly-api-flow-etc/43472)

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**Author:** [@imile](https://discourse.nodered.org/u/imile)\
**Replies:** 5\
**Last updated:** [31 March 2021 21:18 UTC](https://discourse.nodered.org/t/shelly-api-flow-etc/43472 "2021-03-31T21:18:43Z")

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Good day everyone So if someone can help me with Shelly API etc. In POSTMAN I can get my results when I follow the SHELLY API Instructions. How can I translate that into NODERED FLOW. Where do I put the values?

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## [Monitor lawn robot](https://discourse.nodered.org/t/monitor-lawn-robot/43444)

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**Author:** [@edstobi](https://discourse.nodered.org/u/edstobi)\
**Replies:** 3\
**Last updated:** [31 March 2021 20:20 UTC](https://discourse.nodered.org/t/monitor-lawn-robot/43444 "2021-03-31T20:20:10Z")

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Hello I would like to monitor my lawn robot. Unfortunately, I have not yet properly understood how I can access the data from the cloud. There is a possibility in IoBroker. However, I don't use it because I have solve…

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