# Latest

**URL:** https://discourse.nodered.org/latest.md?no_subcategories=false&page=357

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

**Page:** 358

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## [Upgrade to Node-Red 3, now getting an error message in flows](https://discourse.nodered.org/t/upgrade-to-node-red-3-now-getting-an-error-message-in-flows/77726)

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**Author:** [@dr\_cave\_dweller](https://discourse.nodered.org/u/dr_cave_dweller)\
**Replies:** 2\
**Last updated:** [20 April 2023 10:13 UTC](https://discourse.nodered.org/t/upgrade-to-node-red-3-now-getting-an-error-message-in-flows/77726 "2023-04-20T10:13:40Z")

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Hi, I have upgraded Node-Red and now getting errors in my old existing flow when deploying. The nodes that have an issue are ones where I take the input message, do something with it, then output a new output message unr…

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## [Issues with Firebase references in Node-Red flows](https://discourse.nodered.org/t/issues-with-firebase-references-in-node-red-flows/77735)

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**Author:** [@pereibex](https://discourse.nodered.org/u/pereibex)\
**Replies:** 0\
**Last updated:** [20 April 2023 10:01 UTC](https://discourse.nodered.org/t/issues-with-firebase-references-in-node-red-flows/77735 "2023-04-20T10:01:07Z")

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It is not possible to use document references through the Javascript SDK for Firebase. FirebaseError: \[code=invalid-argument\]: Function setDoc() called with invalid data. Data must be an object, but it was: a custom Obj…

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## [No Dashboard and Raspberry Pi inactive](https://discourse.nodered.org/t/no-dashboard-and-raspberry-pi-inactive/77708)

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**Author:** [@Surefire01](https://discourse.nodered.org/u/Surefire01)\
**Replies:** 9\
**Last updated:** [20 April 2023 08:41 UTC](https://discourse.nodered.org/t/no-dashboard-and-raspberry-pi-inactive/77708 "2023-04-20T08:41:31Z")

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Hi Folks I've been using my Pi4 to to run home automation's via a Node Red instance and have had much success for the last two years or so. The Pi in combination with Node red has performed pretty much flawlessly during…

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## [Compare Actual Time with Node-Red Time](https://discourse.nodered.org/t/compare-actual-time-with-node-red-time/77719)

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**Author:** [@Gawan](https://discourse.nodered.org/u/Gawan)\
**Replies:** 7\
**Last updated:** [20 April 2023 07:43 UTC](https://discourse.nodered.org/t/compare-actual-time-with-node-red-time/77719 "2023-04-20T07:43:03Z")

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Hi all, is it possible to compare the actual time to a given time and act accordingly ? The code that I already have looks like this, but I do not how know to get the actual time from node-red and compare it to a plann…

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## [Documentation for Jsonata usage in common Node-RED nodes](https://discourse.nodered.org/t/documentation-for-jsonata-usage-in-common-node-red-nodes/77715)

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**Author:** [@tree-frog](https://discourse.nodered.org/u/tree-frog)\
**Replies:** 8\
**Last updated:** [20 April 2023 07:35 UTC](https://discourse.nodered.org/t/documentation-for-jsonata-usage-in-common-node-red-nodes/77715 "2023-04-20T07:35:36Z")

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I'm using Node-RED more and getting better with Javascript and using the Function Node. I have discovered by trying Jsonata on a very limited basis. NOW with recent improvements to the basics available in Node-RED ther…

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## [How to install Tasmota on an ESP8266](https://discourse.nodered.org/t/how-to-install-tasmota-on-an-esp8266/63587)

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**Author:** [@9toejack](https://discourse.nodered.org/u/9toejack)\
**Replies:** 117\
**Last updated:** [20 April 2023 01:57 UTC](https://discourse.nodered.org/t/how-to-install-tasmota-on-an-esp8266/63587 "2023-04-20T01:57:26Z")

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How to set up an esp8266 with Tasmota, and collect data from pressure sensors, humidity, and temperature sensors, and use Node Red Dashboard to display your readings. Things you will need. 1 A raspberry pi with Node Re…

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## [Audio problems using exec node](https://discourse.nodered.org/t/audio-problems-using-exec-node/77706)

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**Author:** [@muggins](https://discourse.nodered.org/u/muggins)\
**Replies:** 40\
**Last updated:** [19 April 2023 20:34 UTC](https://discourse.nodered.org/t/audio-problems-using-exec-node/77706 "2023-04-19T20:34:46Z")

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I have been using an exec mode in node red to play mp3 files for quite some time and now it has stopped working. I can't find any error messages anywhere. If I run this line in a terminal window it works mpg123 /home/…

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## [Node-red-start......doesn't](https://discourse.nodered.org/t/node-red-start-doesnt/77724)

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**Author:** [@rhody456](https://discourse.nodered.org/u/rhody456)\
**Replies:** 1\
**Last updated:** [19 April 2023 20:16 UTC](https://discourse.nodered.org/t/node-red-start-doesnt/77724 "2023-04-19T20:16:14Z")

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just got this loaded and wanted to start using ...node-red-start, but I get...command not found. tried node-red ...same thing

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## [How to send string node to a table in Postgres](https://discourse.nodered.org/t/how-to-send-string-node-to-a-table-in-postgres/77678)

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**Author:** [@daaven](https://discourse.nodered.org/u/daaven)\
**Replies:** 6\
**Last updated:** [19 April 2023 19:06 UTC](https://discourse.nodered.org/t/how-to-send-string-node-to-a-table-in-postgres/77678 "2023-04-19T19:06:56Z")

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The two MQTT nodes, Customer Name & Description, are ASCII code that are 'split' then changed to string characters. I want to send those strings to a table in my database using postgres. I figured out how to send al…

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## [HowTo use assert](https://discourse.nodered.org/t/howto-use-assert/77718)

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**Author:** [@Moosbueffel](https://discourse.nodered.org/u/Moosbueffel)\
**Replies:** 11\
**Last updated:** [19 April 2023 17:39 UTC](https://discourse.nodered.org/t/howto-use-assert/77718 "2023-04-19T17:39:07Z")

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I tried to use assert. On some pages (eg.g here) I read, that it is built in into Node.js and Node-Red. But I failed to use it. I tried: // Testskript für den Flow const assert = require("assert"); // Importieren der a…

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## [Monitor Large Array of Objects for Changes](https://discourse.nodered.org/t/monitor-large-array-of-objects-for-changes/77714)

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**Author:** [@KAMERONSWENSON](https://discourse.nodered.org/u/KAMERONSWENSON)\
**Replies:** 5\
**Last updated:** [19 April 2023 16:59 UTC](https://discourse.nodered.org/t/monitor-large-array-of-objects-for-changes/77714 "2023-04-19T16:59:08Z")

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Hello Everyone, I am trying to monitor a large array of objects. Each object contains a Machine ID and a Mold ID coming from a SQL database. I want to monitor for every time we change our Mold ID in a particular Machine…

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## [Change button label using node ID](https://discourse.nodered.org/t/change-button-label-using-node-id/77691)

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**Author:** [@gNeandr](https://discourse.nodered.org/u/gNeandr)\
**Replies:** 2\
**Last updated:** [19 April 2023 16:56 UTC](https://discourse.nodered.org/t/change-button-label-using-node-id/77691 "2023-04-19T16:56:40Z")

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The result of one flow should be used to change the label of a button in a second flow. How can this be realized? Can the node ID of the button in the second flow be used for this? This way the first flow should create…

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## [WebSocket Application](https://discourse.nodered.org/t/websocket-application/77712)

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**Author:** [@boarak](https://discourse.nodered.org/u/boarak)\
**Replies:** 1\
**Last updated:** [19 April 2023 15:01 UTC](https://discourse.nodered.org/t/websocket-application/77712 "2023-04-19T15:01:39Z")

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Hello All, My question is related to WebSocket. I tried that with the local host and it is working. I can see the message. But I can see that error when I tried it via HoloLens IP address. "An error occurred while send…

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## [How to pass json object as input to python script through exec node?](https://discourse.nodered.org/t/how-to-pass-json-object-as-input-to-python-script-through-exec-node/77536)

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**Author:** [@Satyam](https://discourse.nodered.org/u/Satyam)\
**Replies:** 8\
**Last updated:** [19 April 2023 14:24 UTC](https://discourse.nodered.org/t/how-to-pass-json-object-as-input-to-python-script-through-exec-node/77536 "2023-04-19T14:24:07Z")

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please find the node-red code below: \[ { "id": "1ff7a51a41da7b57", "type": "tab", "label": "Flow 2", "disabled": false, "info": "", "env": \[\] }, { "id"…

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## [Unable to get file from a FTP server using advanced-ftp node in Active Mode](https://discourse.nodered.org/t/unable-to-get-file-from-a-ftp-server-using-advanced-ftp-node-in-active-mode/77711)

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**Author:** [@PS2525](https://discourse.nodered.org/u/PS2525)\
**Replies:** 5\
**Last updated:** [19 April 2023 12:19 UTC](https://discourse.nodered.org/t/unable-to-get-file-from-a-ftp-server-using-advanced-ftp-node-in-active-mode/77711 "2023-04-19T12:19:36Z")

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Using an advanced-ftp node, I was successfully able to get a file regularly from an FTP server to my local system which was by default in Passive Mode. However, due to some changes in my internet router's policy, I can f…

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## [Node red don’t restart](https://discourse.nodered.org/t/node-red-don-t-restart/77702)

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**Author:** [@droneman83](https://discourse.nodered.org/u/droneman83)\
**Replies:** 1\
**Last updated:** [19 April 2023 09:05 UTC](https://discourse.nodered.org/t/node-red-don-t-restart/77702 "2023-04-19T09:05:19Z")

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After latest Ha release, node red won’t restart by it self. Even know in the log it do say that NR is running when I push start, and when I open add on is says bad gate way.

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## [Token in Cred files](https://discourse.nodered.org/t/token-in-cred-files/77680)

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**Author:** [@smallf00t](https://discourse.nodered.org/u/smallf00t)\
**Replies:** 2\
**Last updated:** [19 April 2023 08:31 UTC](https://discourse.nodered.org/t/token-in-cred-files/77680 "2023-04-19T08:31:17Z")

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Hi, i would like to add an influxdb token in flows\_cred.json it s done but in my node says authorisation require Add it manualy (the same) and it s ok (same id) i missed something ? Thanks

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## [Issue with serial node](https://discourse.nodered.org/t/issue-with-serial-node/77448)

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**Author:** [@pcnr](https://discourse.nodered.org/u/pcnr)\
**Replies:** 15\
**Last updated:** [19 April 2023 08:14 UTC](https://discourse.nodered.org/t/issue-with-serial-node/77448 "2023-04-19T08:14:34Z")

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Good morning everyone I'm using node-red serial node to send a request to a GPS HAT on Raspberry Pi and get the location in response. The issue is that sometimes, seems after some reboot but not certain, it sends a few …

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## [Cant send data to redis cluster](https://discourse.nodered.org/t/cant-send-data-to-redis-cluster/77705)

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**Author:** [@Josh](https://discourse.nodered.org/u/Josh)\
**Replies:** 0\
**Last updated:** [19 April 2023 06:03 UTC](https://discourse.nodered.org/t/cant-send-data-to-redis-cluster/77705 "2023-04-19T06:03:12Z")

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Hi Forum, Im finding it difficult to send data to redis cluster using the redis node. Has anyone tried doing that or any examples? Thanks in advance.

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## [How to find the perfect hardware](https://discourse.nodered.org/t/how-to-find-the-perfect-hardware/77393)

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**Author:** [@Manuel\_o](https://discourse.nodered.org/u/Manuel_o)\
**Replies:** 16\
**Last updated:** [19 April 2023 05:41 UTC](https://discourse.nodered.org/t/how-to-find-the-perfect-hardware/77393 "2023-04-19T05:41:27Z")

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Hello friends. I am currently running my NR-program to read and control my pump. For this i talk to the pump via MODBUS (nodes) and send data (and recieve) to (from) my MQTT server that is running on a vm. Right now i …

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## [Separate letters and add a hyphen](https://discourse.nodered.org/t/separate-letters-and-add-a-hyphen/77677)

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**Author:** [@Jhontan14](https://discourse.nodered.org/u/Jhontan14)\
**Replies:** 8\
**Last updated:** [19 April 2023 05:33 UTC](https://discourse.nodered.org/t/separate-letters-and-add-a-hyphen/77677 "2023-04-19T05:33:19Z")

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Hello community, I am trying to separate the word that is entered in the "Código" field, that is, the user will enter, for example, AWS001, and I want that when the debuj node arrives, it is separated by a script as show…

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## [Is there any way to get frames out of the ffmpeg node?](https://discourse.nodered.org/t/is-there-any-way-to-get-frames-out-of-the-ffmpeg-node/77576)

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**Author:** [@Seba3Fi](https://discourse.nodered.org/u/Seba3Fi)\
**Replies:** 13\
**Last updated:** [18 April 2023 20:10 UTC](https://discourse.nodered.org/t/is-there-any-way-to-get-frames-out-of-the-ffmpeg-node/77576 "2023-04-18T20:10:44Z")

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Dear @kevinGodell, thanks for posting the ffmpeg module, I am testing it in the context of a home made security system (learning process) My current workflow is something like this: -In Scrypted the rstp flows are proc…

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## [HTML-parce to SQL Flow optimization](https://discourse.nodered.org/t/html-parce-to-sql-flow-optimization/77652)

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**Author:** [@DaZeller](https://discourse.nodered.org/u/DaZeller)\
**Replies:** 7\
**Last updated:** [18 April 2023 19:37 UTC](https://discourse.nodered.org/t/html-parce-to-sql-flow-optimization/77652 "2023-04-18T19:37:27Z")

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Hello there, I have a flow to read values from my Heating-Systems Web-UI an puts the data into an SQL-DB. The Flow is working quite well, but it looks somehow complex and not easy to maintain or extend. The current Flo…

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## [Nod red keep rebooting due FATAL ERROR: Reached heap limit Allocation failed - JavaScript heap out of memory](https://discourse.nodered.org/t/nod-red-keep-rebooting-due-fatal-error-reached-heap-limit-allocation-failed-javascript-heap-out-of-memory/77665)

<div class="topic-metadata">

**Author:** [@Soiski](https://discourse.nodered.org/u/Soiski)\
**Replies:** 10\
**Last updated:** [18 April 2023 17:28 UTC](https://discourse.nodered.org/t/nod-red-keep-rebooting-due-fatal-error-reached-heap-limit-allocation-failed-javascript-heap-out-of-memory/77665 "2023-04-18T17:28:40Z")

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Here is my current problem. Running Node red (3.0.2 / nodejs 18.16.0) locally on Ubuntu 18.04 LTS with 16 GB memory (Ryzen 5 machine) . Heap memory allocation is 4 GB. Started to experience reboots on node red a week ag…

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## [How many node red instance on 1 server](https://discourse.nodered.org/t/how-many-node-red-instance-on-1-server/77688)

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**Author:** [@soerenbull](https://discourse.nodered.org/u/soerenbull)\
**Replies:** 2\
**Last updated:** [18 April 2023 13:59 UTC](https://discourse.nodered.org/t/how-many-node-red-instance-on-1-server/77688 "2023-04-18T13:59:21Z")

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Hi. I am currently looking into big PLC controlling project, witch might could be run with Node Red: The Case is: Around 200 pcs of small PLC in different locations should be running with same number of individual das…

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## [Get Data to Var... but nothing work](https://discourse.nodered.org/t/get-data-to-var-but-nothing-work/77571)

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**Author:** [@einfach112](https://discourse.nodered.org/u/einfach112)\
**Replies:** 5\
**Last updated:** [18 April 2023 13:02 UTC](https://discourse.nodered.org/t/get-data-to-var-but-nothing-work/77571 "2023-04-18T13:02:04Z")

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hi! i have a catch node. on this node is a debug node. the return on the debug node is: 14.4.2023, 19:00:30node: debug 43 msg : Object object error: object message: "no JSON" source: object value: undefined \_error: "…

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## [Extract a Substring from msg.payload and use it as a variable for global.set?](https://discourse.nodered.org/t/extract-a-substring-from-msg-payload-and-use-it-as-a-variable-for-global-set/77687)

<div class="topic-metadata">

**Author:** [@Gawan](https://discourse.nodered.org/u/Gawan)\
**Replies:** 1\
**Last updated:** [18 April 2023 12:33 UTC](https://discourse.nodered.org/t/extract-a-substring-from-msg-payload-and-use-it-as-a-variable-for-global-set/77687 "2023-04-18T12:33:26Z")

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Hi, is there a chance to extract a value from a string, e.g. tele/SP111\_131308/# (i need the value between the slashes) and would like to use it as a global Variable: global.set ("SP111\_131308.State", msg.payload.Sw…

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## [Deleting a bunch of files with Exec Node](https://discourse.nodered.org/t/deleting-a-bunch-of-files-with-exec-node/77684)

<div class="topic-metadata">

**Author:** [@FloRu](https://discourse.nodered.org/u/FloRu)\
**Replies:** 15\
**Last updated:** [18 April 2023 12:24 UTC](https://discourse.nodered.org/t/deleting-a-bunch-of-files-with-exec-node/77684 "2023-04-18T12:24:27Z")

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Hi! I want to delete a bunch of files using the exec node. When I try to start the job with the payload rm /mnt/dietpi\_userdata/File-to-delete\* the exec node tells me: rm: cannot remove '/mnt/dietpi\_userdata/File-t…

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## [Node-red Worldmap API query](https://discourse.nodered.org/t/node-red-worldmap-api-query/77663)

<div class="topic-metadata">

**Author:** [@pijush.rinti](https://discourse.nodered.org/u/pijush.rinti)\
**Replies:** 3\
**Last updated:** [18 April 2023 11:08 UTC](https://discourse.nodered.org/t/node-red-worldmap-api-query/77663 "2023-04-18T11:08:17Z")

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Hello experts, I am a newbie in node-red and working on a personal project. I would like to ask if node-red-contrib-web-worldmap is using an external map to present the map to us? Does it use an API for that? Thanks i…

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## [TCP-IN node send data internally](https://discourse.nodered.org/t/tcp-in-node-send-data-internally/77675)

<div class="topic-metadata">

**Author:** [@bjdaijun](https://discourse.nodered.org/u/bjdaijun)\
**Replies:** 8\
**Last updated:** [18 April 2023 09:08 UTC](https://discourse.nodered.org/t/tcp-in-node-send-data-internally/77675 "2023-04-18T09:08:11Z")

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\[{"id":"19d8c6fadea93ef9","type":"tab","label":"tcp-in","disabled":false,"info":"","env":\[\]},{"id":"1787daf384b3888d","type":"tcp in","z":"19d8c6fadea93ef9","name":"","server":"server","host":"","port":"28001","datamode"…

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