# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=667

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

**Page:** 668

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## [Read messages from a file and process time-based](https://discourse.nodered.org/t/read-messages-from-a-file-and-process-time-based/34299)

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**Author:** [@loeten](https://discourse.nodered.org/u/loeten)\
**Replies:** 11\
**Last updated:** [19 October 2020 09:54 UTC](https://discourse.nodered.org/t/read-messages-from-a-file-and-process-time-based/34299 "2020-10-19T09:54:15Z")

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Hi there, I understood an tested successfully how to store temperature sensor data in a file (just timestamp and temperature. The issue is - the sensor sends data just randomly, if temperature changes. If it does not ch…

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## [Modbus RTU issues](https://discourse.nodered.org/t/modbus-rtu-issues/34445)

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**Author:** [@craigcurtin](https://discourse.nodered.org/u/craigcurtin)\
**Replies:** 1\
**Last updated:** [19 October 2020 09:24 UTC](https://discourse.nodered.org/t/modbus-rtu-issues/34445 "2020-10-19T09:24:03Z")

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Guys, I have a 3 phase energy meter - ACREL DTSD1352 /ADL3000 - it is configured as 9600,N,8,1 on Address 1. I have a Linux (Ubuntu 18.04) on a laptop. I have a USB/RS485 dongle - this is installed and presenting itse…

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## [Help: Filtering Feedparser RSS output](https://discourse.nodered.org/t/help-filtering-feedparser-rss-output/34384)

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**Author:** [@cflynn17](https://discourse.nodered.org/u/cflynn17)\
**Replies:** 2\
**Last updated:** [19 October 2020 01:59 UTC](https://discourse.nodered.org/t/help-filtering-feedparser-rss-output/34384 "2020-10-19T01:59:40Z")

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I am trying to run a rss feed through a feedparser node to a text-to-speech node, but the feedparser output has the website url included with the msg.payload. How can I filter the output to not include the url?

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## [UI Builder change background color depending on the displayed value](https://discourse.nodered.org/t/ui-builder-change-background-color-depending-on-the-displayed-value/33778)

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**Author:** [@ChrisWeb71](https://discourse.nodered.org/u/ChrisWeb71)\
**Replies:** 25\
**Last updated:** [19 October 2020 00:05 UTC](https://discourse.nodered.org/t/ui-builder-change-background-color-depending-on-the-displayed-value/33778 "2020-10-19T00:05:00Z")

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Hello, how can I dynamically change the background color of the current value? The value gValue.toFixed (0) is displayed. But I want the background to turn red as soon as the value goes into the minus range. Can someo…

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## [How to disable/enable specific options on change](https://discourse.nodered.org/t/how-to-disable-enable-specific-options-on-change/34466)

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**Author:** [@hepcat72](https://discourse.nodered.org/u/hepcat72)\
**Replies:** 5\
**Last updated:** [18 October 2020 22:08 UTC](https://discourse.nodered.org/t/how-to-disable-enable-specific-options-on-change/34466 "2020-10-18T22:08:01Z")

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I have figured out how to disable/enable all select list options on change with: for (var x = 0; x \< $("#node-input-event")\[0\].childElementCount; x++) { $('#node-input-event')\[0\]\[x\].disabled = true; } …

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## [Artikel Datenbank Mail](https://discourse.nodered.org/t/artikel-datenbank-mail/34462)

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**Author:** [@sakasitadi](https://discourse.nodered.org/u/sakasitadi)\
**Replies:** 0\
**Last updated:** [18 October 2020 16:14 UTC](https://discourse.nodered.org/t/artikel-datenbank-mail/34462 "2020-10-18T16:14:07Z")

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Hallo, kann mir vielleicht jemand helden? Ich möchte mit dem Form-Node eine Menge und einen Artikel in die Datenbank schreiben. das funktioniert auch.. Mit dem Button soll die Datenbank augelesen und der Inhalt (Ar…

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## [Timer issue how to stop it when it gets to zero](https://discourse.nodered.org/t/timer-issue-how-to-stop-it-when-it-gets-to-zero/34430)

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**Author:** [@holmesjohnnyh](https://discourse.nodered.org/u/holmesjohnnyh)\
**Replies:** 2\
**Last updated:** [18 October 2020 13:37 UTC](https://discourse.nodered.org/t/timer-issue-how-to-stop-it-when-it-gets-to-zero/34430 "2020-10-18T13:37:07Z")

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i have used this flow to create a timer for my aquarium controller which tells me how long the feed mode has left to run but the issue i have is i want it to stop when it gets to zero. just started with node red and new …

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## [Node-red 1.2.0 won't start](https://discourse.nodered.org/t/node-red-1-2-0-wont-start/34304)

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**Author:** [@Supergiovane](https://discourse.nodered.org/u/Supergiovane)\
**Replies:** 9\
**Last updated:** [18 October 2020 12:36 UTC](https://discourse.nodered.org/t/node-red-1-2-0-wont-start/34304 "2020-10-18T12:36:33Z")

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Hi. First of all, thank you for this great update on node-red. After installing node-red 1.2.0, node-red won't start, giving me this error: internal/modules/cjs/loader.js:548 throw e; ^ Error: Package exports for '…

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## [Just me? Or is the timeout property missing?](https://discourse.nodered.org/t/just-me-or-is-the-timeout-property-missing/34330)

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**Author:** [@Nodi.Rubrum](https://discourse.nodered.org/u/Nodi.Rubrum)\
**Replies:** 3\
**Last updated:** [18 October 2020 12:34 UTC](https://discourse.nodered.org/t/just-me-or-is-the-timeout-property-missing/34330 "2020-10-18T12:34:59Z")

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I don't see a timeout property? And when I set the msg.timeout to 30 seconds, it did not work on the first window, but only the second window? I am trying to do two things... I don't want the first node notificati…

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## [Doing Calculations on Modbus data](https://discourse.nodered.org/t/doing-calculations-on-modbus-data/34414)

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**Author:** [@RollsFPV](https://discourse.nodered.org/u/RollsFPV)\
**Replies:** 15\
**Last updated:** [18 October 2020 10:13 UTC](https://discourse.nodered.org/t/doing-calculations-on-modbus-data/34414 "2020-10-18T10:13:26Z")

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I need to get data from modbus server and perform calculation on this data, been searching all day and still no closer to an answer, so im asking if anyone can help. I have to get 3 items from solar charger controllers …

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## [Pioneer600 joy-it explorer700](https://discourse.nodered.org/t/pioneer600-joy-it-explorer700/34443)

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**Author:** [@ToneGriff](https://discourse.nodered.org/u/ToneGriff)\
**Replies:** 0\
**Last updated:** [18 October 2020 10:04 UTC](https://discourse.nodered.org/t/pioneer600-joy-it-explorer700/34443 "2020-10-18T10:04:33Z")

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Hi all, Anyone had any experience with the Pioneer600 or Joy-it Explorer700 HAT for the Raspi? I would like to use this with Node-red.

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## [Split and Split Again](https://discourse.nodered.org/t/split-and-split-again/34215)

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**Author:** [@radiosavage](https://discourse.nodered.org/u/radiosavage)\
**Replies:** 17\
**Last updated:** [18 October 2020 06:33 UTC](https://discourse.nodered.org/t/split-and-split-again/34215 "2020-10-18T06:33:18Z")

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I am new to Node-Red so I hope that I can explain this in a way that makes sense. I am getting data from a program called Pira CZ that triggers when silence is on our station. It uses HTTP Get to input into Node Red an…

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## [Moving Node Red Project to new install, missing credential?](https://discourse.nodered.org/t/moving-node-red-project-to-new-install-missing-credential/34225)

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**Author:** [@danieldean1](https://discourse.nodered.org/u/danieldean1)\
**Replies:** 1\
**Last updated:** [18 October 2020 04:15 UTC](https://discourse.nodered.org/t/moving-node-red-project-to-new-install-missing-credential/34225 "2020-10-18T04:15:50Z")

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Help once again fine folks :wave:... I’m new to node red (esp projects and authentication procedures) and have had to reinstall everything. I’m trying to bring my old Project from node red into my new install but having…

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## [Move multiple objects](https://discourse.nodered.org/t/move-multiple-objects/34379)

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**Author:** [@bigfeetneedbigboots](https://discourse.nodered.org/u/bigfeetneedbigboots)\
**Replies:** 2\
**Last updated:** [18 October 2020 01:26 UTC](https://discourse.nodered.org/t/move-multiple-objects/34379 "2020-10-18T01:26:34Z")

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I'm using a node-red-contrib-simpletime node which adds a series of objects to the message based on what options I have ticked. For example, I am adding msg.mydate, msg.mymonth, msg.myday and so on. There are 10 in total…

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## [Unable to connect to DB](https://discourse.nodered.org/t/unable-to-connect-to-db/34422)

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**Author:** [@ebolisa](https://discourse.nodered.org/u/ebolisa)\
**Replies:** 23\
**Last updated:** [17 October 2020 21:02 UTC](https://discourse.nodered.org/t/unable-to-connect-to-db/34422 "2020-10-17T21:02:09Z")

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Hi, I'm getting the connection error shown below. I recreated the link with no avail. Rewritten the credentials with no avail either. My ESP connects to the DB without a problem using the same credentials. How can I …

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## [Problem with example at Node Info node-red-contrib-ui-svg 2.0.3](https://discourse.nodered.org/t/problem-with-example-at-node-info-node-red-contrib-ui-svg-2-0-3/34428)

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**Author:** [@Artoo451](https://discourse.nodered.org/u/Artoo451)\
**Replies:** 3\
**Last updated:** [17 October 2020 20:42 UTC](https://discourse.nodered.org/t/problem-with-example-at-node-info-node-red-contrib-ui-svg-2-0-3/34428 "2020-10-17T20:42:25Z")

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Hi everybody, I´m trying to find out how to create SVG-Objects by msg. The description in Node Info 2.0.3 shows a example at the very end. Unfortunately it is not shown in the right format like the other examples so I c…

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## [Adaptive card with webhooks](https://discourse.nodered.org/t/adaptive-card-with-webhooks/34424)

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**Author:** [@alikhan](https://discourse.nodered.org/u/alikhan)\
**Replies:** 0\
**Last updated:** [17 October 2020 17:31 UTC](https://discourse.nodered.org/t/adaptive-card-with-webhooks/34424 "2020-10-17T17:31:48Z")

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trying to work with the Adaptive card. Make the actionable Adaptive card in Microsoft then send it to MS teams through webhook. with the message card, it working fine. but with the JSON it not working. Adaptive card sit…

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## [Writing sensor data to file - how to limit file size?](https://discourse.nodered.org/t/writing-sensor-data-to-file-how-to-limit-file-size/34367)

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**Author:** [@bmoel](https://discourse.nodered.org/u/bmoel)\
**Replies:** 6\
**Last updated:** [17 October 2020 16:31 UTC](https://discourse.nodered.org/t/writing-sensor-data-to-file-how-to-limit-file-size/34367 "2020-10-17T16:31:42Z")

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I am using the "append to file" function in the file node to write sensor data to a file and I would like to limit this file to two years of data. It would be perfect if there was something like a max file size or simila…

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## [From string to date](https://discourse.nodered.org/t/from-string-to-date/34371)

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**Author:** [@christian19](https://discourse.nodered.org/u/christian19)\
**Replies:** 3\
**Last updated:** [17 October 2020 16:18 UTC](https://discourse.nodered.org/t/from-string-to-date/34371 "2020-10-17T16:18:42Z")

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Hi! Use a web-scrape to get a date from a web page. Any suggestions on how I get this message to a date? 19. okt

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## [Control stepper motor](https://discourse.nodered.org/t/control-stepper-motor/34420)

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**Author:** [@omono35](https://discourse.nodered.org/u/omono35)\
**Replies:** 1\
**Last updated:** [17 October 2020 16:18 UTC](https://discourse.nodered.org/t/control-stepper-motor/34420 "2020-10-17T16:18:41Z")

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Is there a way to control a stepper motor connected to my raspberry pi with node red? What I would like to do is set it up so that I know how many steps it takes to make a 1/2 revolution. Then I would make a slider wher…

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## [Days from today](https://discourse.nodered.org/t/days-from-today/34413)

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**Author:** [@vinisz](https://discourse.nodered.org/u/vinisz)\
**Replies:** 2\
**Last updated:** [17 October 2020 16:15 UTC](https://discourse.nodered.org/t/days-from-today/34413 "2020-10-17T16:15:31Z")

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Hi, Have a payload like this : Would like to know the number of days difference compared to today. Already searched bu can't find solution yet.

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## [Possible error message from ui\_list node](https://discourse.nodered.org/t/possible-error-message-from-ui-list-node/34381)

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**Author:** [@Andrei](https://discourse.nodered.org/u/Andrei)\
**Replies:** 2\
**Last updated:** [17 October 2020 14:02 UTC](https://discourse.nodered.org/t/possible-error-message-from-ui-list-node/34381 "2020-10-17T14:02:05Z")

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I am getting the following error message when inspecting dashboard with dev tools. Apparently it comes from the ui\_list node. Someone else getting the same error ? I found a good reference that explains the meaning …

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## [Amazon Echo Hub](https://discourse.nodered.org/t/amazon-echo-hub/6724)

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**Author:** [@dynamicdave](https://discourse.nodered.org/u/dynamicdave)\
**Replies:** 31\
**Last updated:** [17 October 2020 12:46 UTC](https://discourse.nodered.org/t/amazon-echo-hub/6724 "2020-10-17T12:46:47Z")

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Has anyone tried using this new node? https://flows.nodered.org/node/node-red-contrib-amazon-echo I've not managed to get it to work with Echo Dot Gen-2 and NR running on Raspian Stretch on a RPi-3+ Would be interesti…

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## [Email node. Subject payload](https://discourse.nodered.org/t/email-node-subject-payload/34409)

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**Author:** [@uratev](https://discourse.nodered.org/u/uratev)\
**Replies:** 4\
**Last updated:** [17 October 2020 12:06 UTC](https://discourse.nodered.org/t/email-node-subject-payload/34409 "2020-10-17T12:06:24Z")

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I need to forward email subject to telegram. All works with body text and Template node. But how i can forward only subject from email?

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## [How to send the input from textfield via flutter and node-red](https://discourse.nodered.org/t/how-to-send-the-input-from-textfield-via-flutter-and-node-red/34407)

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**Author:** [@y.star](https://discourse.nodered.org/u/y.star)\
**Replies:** 18\
**Last updated:** [17 October 2020 10:25 UTC](https://discourse.nodered.org/t/how-to-send-the-input-from-textfield-via-flutter-and-node-red/34407 "2020-10-17T10:25:05Z")

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I'm trying to send the data from flutter through node-red to the database by using http post. The database was updated but they showed undefined in every column. This is my code in flutter: Future registerCus(String fi…

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## [RED.events warning persist.js](https://discourse.nodered.org/t/red-events-warning-persist-js/34400)

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**Author:** [@yogy](https://discourse.nodered.org/u/yogy)\
**Replies:** 2\
**Last updated:** [17 October 2020 09:37 UTC](https://discourse.nodered.org/t/red-events-warning-persist-js/34400 "2020-10-17T09:37:38Z")

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Updated to 1.2.1, updated all nodes with update message showing. When I do a deploy I get now always 2 warnings in the debug screen. Do I have to do something to get rid of the warning "\[RED.events\] Deprecated use of …

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## [Timestamp ? to date/time](https://discourse.nodered.org/t/timestamp-to-date-time/34344)

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**Author:** [@vinisz](https://discourse.nodered.org/u/vinisz)\
**Replies:** 2\
**Last updated:** [17 October 2020 08:31 UTC](https://discourse.nodered.org/t/timestamp-to-date-time/34344 "2020-10-17T08:31:11Z")

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Hi All, Not quite sure on how to ask this. I have a payload (updatetime) which contains something like a timestamp. (pic2) The strange thing is however that I thought it was EPOCH time, but is seems shorter. However,…

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## [Intervall Inject not works](https://discourse.nodered.org/t/intervall-inject-not-works/34221)

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**Author:** [@Schmierer](https://discourse.nodered.org/u/Schmierer)\
**Replies:** 6\
**Last updated:** [17 October 2020 07:01 UTC](https://discourse.nodered.org/t/intervall-inject-not-works/34221 "2020-10-17T07:01:01Z")

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Hi everybody, i have some flows with different intervall inject's. For a few days i have the problem that all the inject dont work between 06:40pm and 7:45am. Manually i can trigger the Injects all time an the Dashboa…

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## [Google TTS node not working](https://discourse.nodered.org/t/google-tts-node-not-working/34275)

<div class="topic-metadata">

**Author:** [@bigfeetneedbigboots](https://discourse.nodered.org/u/bigfeetneedbigboots)\
**Replies:** 3\
**Last updated:** [16 October 2020 23:50 UTC](https://discourse.nodered.org/t/google-tts-node-not-working/34275 "2020-10-16T23:50:17Z")

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I have had a flow where I use the node-red-contrib-google-tts node to convert a string into a url then the node-red-contrib-cast node to play the resulting audio on a Google Nest device for over a year. During the last w…

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## [Read Data from Json object and push to an array](https://discourse.nodered.org/t/read-data-from-json-object-and-push-to-an-array/34377)

<div class="topic-metadata">

**Author:** [@neelanjan](https://discourse.nodered.org/u/neelanjan)\
**Replies:** 2\
**Last updated:** [16 October 2020 22:10 UTC](https://discourse.nodered.org/t/read-data-from-json-object-and-push-to-an-array/34377 "2020-10-16T22:10:59Z")

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Need to read data from json object which is server data at an interval of 1 sec...and then need to push 1min data(60 samples) into an array...is it possible using node red.

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