# Latest

**URL:** https://discourse.nodered.org/latest.md?page=918

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

**Page:** 919

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## [Error: Expected numeric value for, timestamp](https://discourse.nodered.org/t/error-expected-numeric-value-for-timestamp/38586)

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**Author:** [@vikozo](https://discourse.nodered.org/u/vikozo)\
**Replies:** 6\
**Last updated:** [5 January 2021 21:33 UTC](https://discourse.nodered.org/t/error-expected-numeric-value-for-timestamp/38586 "2021-01-05T21:33:22Z")

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Hallo a mqtt into Node-Red --\> into influx i got a error like this 5.1.2021, 13:13:08node: 6d00231f.50158c msg : error "Error: Expected numeric value for, timestamp, but got '2021-01-05 12:13:10'!" and the payloa…

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## [HTTP post Content-Type header not working](https://discourse.nodered.org/t/http-post-content-type-header-not-working/38596)

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**Author:** [@JohnnyPicnic](https://discourse.nodered.org/u/JohnnyPicnic)\
**Replies:** 3\
**Last updated:** [5 January 2021 21:22 UTC](https://discourse.nodered.org/t/http-post-content-type-header-not-working/38596 "2021-01-05T21:22:30Z")

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I'm attempting to send an http post request to an API. I can send it successfully using https://apitester.com/ online API tester but when I try it with Node-Red I get a 302 error. The one variable i've found that gets me…

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## [Installation/restore files question](https://discourse.nodered.org/t/installation-restore-files-question/38562)

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**Author:** [@gerry](https://discourse.nodered.org/u/gerry)\
**Replies:** 2\
**Last updated:** [5 January 2021 20:40 UTC](https://discourse.nodered.org/t/installation-restore-files-question/38562 "2021-01-05T20:40:16Z")

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Read through the backup and installation questions however I seek some clarity. If I take a fresh pi OS install then run the node red install script I should have a good running install of node red. If I then take a .no…

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## [Help with a Node](https://discourse.nodered.org/t/help-with-a-node/38612)

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**Author:** [@popeyesfx](https://discourse.nodered.org/u/popeyesfx)\
**Replies:** 3\
**Last updated:** [5 January 2021 20:36 UTC](https://discourse.nodered.org/t/help-with-a-node/38612 "2021-01-05T20:36:32Z")

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Hi All I am new to node-red and have been trying to use it to connect to a BLE battery monitor. After a little scratching of my head and a lot of googling, I have managed to get the nodes to connect (using node-red-cont…

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## [Dashboard Table - Mixing Data Types](https://discourse.nodered.org/t/dashboard-table-mixing-data-types/38593)

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**Author:** [@dave-kinnear](https://discourse.nodered.org/u/dave-kinnear)\
**Replies:** 1\
**Last updated:** [5 January 2021 19:10 UTC](https://discourse.nodered.org/t/dashboard-table-mixing-data-types/38593 "2021-01-05T19:10:13Z")

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I am trying to create this table on a Node-Red dashboard: I have been through this forum and other online advice and have found only complicated solutions discussing passing arrays to template nodes or ng-repeat (whic…

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## [Dashboard HELP category needs HELP](https://discourse.nodered.org/t/dashboard-help-category-needs-help/36460)

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**Author:** [@tree-frog](https://discourse.nodered.org/u/tree-frog)\
**Replies:** 4\
**Last updated:** [5 January 2021 18:14 UTC](https://discourse.nodered.org/t/dashboard-help-category-needs-help/36460 "2021-01-05T18:14:03Z")

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Dear Dashboard TEAM: This is me trying desperately to be "Constructive". I was trying to figure out what "COLOUR" options, by using "Green", "Light Green" etc. I found that only certain keywords are recognized. A list…

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## [Hyphen character (-) problem in function mqtt tasmota](https://discourse.nodered.org/t/hyphen-character-problem-in-function-mqtt-tasmota/20236)

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**Author:** [@fzr91](https://discourse.nodered.org/u/fzr91)\
**Replies:** 34\
**Last updated:** [5 January 2021 17:37 UTC](https://discourse.nodered.org/t/hyphen-character-problem-in-function-mqtt-tasmota/20236 "2021-01-05T17:37:44Z")

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Hi, I have a problem with the dash (-)in this function (mqtt - tasmota temperature sensor): var temp = msg.payload.AM2301-13.Temperature; var msg = { payload:temp }; return msg; How can I use - as simpl…

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## [AngularJS considered harmful](https://discourse.nodered.org/t/angularjs-considered-harmful/38577)

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**Author:** [@ambotaku](https://discourse.nodered.org/u/ambotaku)\
**Replies:** 3\
**Last updated:** [5 January 2021 17:31 UTC](https://discourse.nodered.org/t/angularjs-considered-harmful/38577 "2021-01-05T17:31:18Z")

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Since a year I’m a retired “fullstack-developer” who participated in building AV consoles and stream switches. During my last three business years I ported several desktop UI interfaces to web interfaces using libraries …

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## [Sending message asynchronously? How to send payload once an event occurs?](https://discourse.nodered.org/t/sending-message-asynchronously-how-to-send-payload-once-an-event-occurs/38599)

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**Author:** [@adamelli](https://discourse.nodered.org/u/adamelli)\
**Replies:** 1\
**Last updated:** [5 January 2021 16:34 UTC](https://discourse.nodered.org/t/sending-message-asynchronously-how-to-send-payload-once-an-event-occurs/38599 "2021-01-05T16:34:26Z")

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Using the Dashboard, a user selects a sequence of commands (say for robot movement). Once the user is satisfied with their selected sequence, I want that string to be published. Only once the user is done though. So onc…

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## [OPC UA Client Node Errors](https://discourse.nodered.org/t/opc-ua-client-node-errors/38598)

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**Author:** [@psalibe](https://discourse.nodered.org/u/psalibe)\
**Replies:** 0\
**Last updated:** [5 January 2021 15:57 UTC](https://discourse.nodered.org/t/opc-ua-client-node-errors/38598 "2021-01-05T15:57:56Z")

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I am using a Siemens S7-1200 PLC and connecting it within Node-Red on a Siemens IOT2040 and through to the OPC UA Client Node. Sometimes it works and gives the "active reading" and goes on a little run where it works, bu…

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## [Filter array with out index](https://discourse.nodered.org/t/filter-array-with-out-index/38563)

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**Author:** [@Paulf007](https://discourse.nodered.org/u/Paulf007)\
**Replies:** 4\
**Last updated:** [5 January 2021 15:50 UTC](https://discourse.nodered.org/t/filter-array-with-out-index/38563 "2021-01-05T15:50:53Z")

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I am building a Alarm that monitors all the doors on my property and would like to get a notification at 18H00 to inform me if any of them was left open. I created a function that monitors the topic's and then sets thei…

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## [Advantech - UNO-220-P4N1AERPi](https://discourse.nodered.org/t/advantech-uno-220-p4n1aerpi/38595)

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**Author:** [@iiLaw](https://discourse.nodered.org/u/iiLaw)\
**Replies:** 0\
**Last updated:** [5 January 2021 15:09 UTC](https://discourse.nodered.org/t/advantech-uno-220-p4n1aerpi/38595 "2021-01-05T15:09:51Z")

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This is an welcome addition for RPI industrial or those needing RTC and only 69 EUR UNO-220-P4N1AERPi Gateway Kit with 1 RS232/485, 4 GPIO, 8G SD Shame it doesn't have wide range DC input .... https://buy.advantech.eu…

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## [Setting a value to 0](https://discourse.nodered.org/t/setting-a-value-to-0/38581)

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**Author:** [@Becker](https://discourse.nodered.org/u/Becker)\
**Replies:** 6\
**Last updated:** [5 January 2021 12:59 UTC](https://discourse.nodered.org/t/setting-a-value-to-0/38581 "2021-01-05T12:59:50Z")

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Hi, I want to disable one of my inverters. If I do, the values freeze. I want to set them to "0". But I don´t get a "0", always error or "undefined". I just want to override with a "0" after disabling the inverter /…

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## [Value to Array conversion](https://discourse.nodered.org/t/value-to-array-conversion/38568)

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**Author:** [@DSongra11\_forum.com](https://discourse.nodered.org/u/DSongra11_forum.com)\
**Replies:** 5\
**Last updated:** [5 January 2021 12:46 UTC](https://discourse.nodered.org/t/value-to-array-conversion/38568 "2021-01-05T12:46:32Z")

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Hello, I want to convert msg.payload Value into an array for sql database. Attached debug message screenshot. Thanks in advance. Br, Devendra

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## [Node Red into InfluxDB Problems](https://discourse.nodered.org/t/node-red-into-influxdb-problems/38548)

<div class="topic-metadata">

**Author:** [@vikozo](https://discourse.nodered.org/u/vikozo)\
**Replies:** 2\
**Last updated:** [4 January 2021 23:27 UTC](https://discourse.nodered.org/t/node-red-into-influxdb-problems/38548 "2021-01-04T23:27:21Z")

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Hello there i get the water Temperatur of a small River close by. i wish to save it into InfluxDB i think i miss something because there are no data show databases onl\_wa\_pfa use onl\_wa\_pfa show series key Wasse…

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## [Node-Red & Docker Swarm secrets](https://discourse.nodered.org/t/node-red-docker-swarm-secrets/38585)

<div class="topic-metadata">

**Author:** [@efratha94](https://discourse.nodered.org/u/efratha94)\
**Replies:** 0\
**Last updated:** [5 January 2021 12:05 UTC](https://discourse.nodered.org/t/node-red-docker-swarm-secrets/38585 "2021-01-05T12:05:23Z")

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Hi, Is there a way to define secrets for a node-red service running on docker swarm, and access it from the editor? I want to manage my passwords for a project that way, but I don't know how to configure it in a way I …

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## [Struggling with async function](https://discourse.nodered.org/t/struggling-with-async-function/38574)

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**Author:** [@msupra](https://discourse.nodered.org/u/msupra)\
**Replies:** 1\
**Last updated:** [5 January 2021 12:01 UTC](https://discourse.nodered.org/t/struggling-with-async-function/38574 "2021-01-05T12:01:15Z")

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Hi My node.js skills when it comes to async functions, leaves much to be desired. Below is a copy paste exercise from some code, but I can just not figure out how to return the result from this function call: function …

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## [How to open a “Select folder” dialog from Node-Red)?](https://discourse.nodered.org/t/how-to-open-a-select-folder-dialog-from-node-red/38575)

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**Author:** [@Allen](https://discourse.nodered.org/u/Allen)\
**Replies:** 4\
**Last updated:** [5 January 2021 11:38 UTC](https://discourse.nodered.org/t/how-to-open-a-select-folder-dialog-from-node-red/38575 "2021-01-05T11:38:28Z")

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I create a new node, I need load json file to do something. Could I open a “Select folder” dialog to select json file instead of absolute json path.

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## [Create Rest API Service on PI which act on PUT and GET requests](https://discourse.nodered.org/t/create-rest-api-service-on-pi-which-act-on-put-and-get-requests/38520)

<div class="topic-metadata">

**Author:** [@calberts](https://discourse.nodered.org/u/calberts)\
**Replies:** 2\
**Last updated:** [5 January 2021 11:33 UTC](https://discourse.nodered.org/t/create-rest-api-service-on-pi-which-act-on-put-and-get-requests/38520 "2021-01-05T11:33:01Z")

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Hoi Can some one help me, I like to build some functions on my node-red implementation. to control them via an API. Very simple when sending a PUT I want to control the GPIO and a GET which show some results back P…

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## [Ademco NuTech AD2USB flow - no data](https://discourse.nodered.org/t/ademco-nutech-ad2usb-flow-no-data/38492)

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**Author:** [@PPz](https://discourse.nodered.org/u/PPz)\
**Replies:** 3\
**Last updated:** [5 January 2021 09:25 UTC](https://discourse.nodered.org/t/ademco-nutech-ad2usb-flow-no-data/38492 "2021-01-05T09:25:02Z")

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I installed a flow to obtain data from a nuTech Ad2USB unit, connected to a serial port: I had in the beginning some serial read errors because the Nutech software was looking on the port to provide the interface to …

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## [No Website with Firefox Plugin](https://discourse.nodered.org/t/no-website-with-firefox-plugin/38541)

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**Author:** [@Manfred53](https://discourse.nodered.org/u/Manfred53)\
**Replies:** 2\
**Last updated:** [5 January 2021 08:32 UTC](https://discourse.nodered.org/t/no-website-with-firefox-plugin/38541 "2021-01-05T08:32:47Z")

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I have installed the Firerfox plugin Noscript (https://noscript.net/). After activating this plugin the node-red websites of the Raspberry are not depict anymore (http://raspberrypi.local:1880 and http://raspberrypi.loca…

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## [Login form credentials issue](https://discourse.nodered.org/t/login-form-credentials-issue/38508)

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**Author:** [@sanket](https://discourse.nodered.org/u/sanket)\
**Replies:** 2\
**Last updated:** [5 January 2021 08:02 UTC](https://discourse.nodered.org/t/login-form-credentials-issue/38508 "2021-01-05T08:02:33Z")

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If I logged out from my webpage and goes back to login page again then my previous login credentials are not going.

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## [Change color dynamically of dashboard menu and dashboard title](https://discourse.nodered.org/t/change-color-dynamically-of-dashboard-menu-and-dashboard-title/5104)

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**Author:** [@roberto.zeni](https://discourse.nodered.org/u/roberto.zeni)\
**Replies:** 10\
**Last updated:** [5 January 2021 06:50 UTC](https://discourse.nodered.org/t/change-color-dynamically-of-dashboard-menu-and-dashboard-title/5104 "2021-01-05T06:50:17Z")

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Hi Guys, Is it possible to dynamically and individually change the color (background and text) of Left menu (each row) Title of single dashboard ? Is it also possible dynamically change the icon of left menu (each s…

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## [Need Advice For 2 Different X Axis Position](https://discourse.nodered.org/t/need-advice-for-2-different-x-axis-position/38556)

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**Author:** [@mrizkywiguna](https://discourse.nodered.org/u/mrizkywiguna)\
**Replies:** 0\
**Last updated:** [5 January 2021 00:12 UTC](https://discourse.nodered.org/t/need-advice-for-2-different-x-axis-position/38556 "2021-01-05T00:12:28Z")

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Hello All, I am making a chart with 2 types of X Axis, one in normal condition and one in invert condition. The two Y Axis data have different topics. I've coded the chart from several references, but they don't seem to…

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## [Best practice for size of a UI node](https://discourse.nodered.org/t/best-practice-for-size-of-a-ui-node/38482)

<div class="topic-metadata">

**Author:** [@BartButenaers](https://discourse.nodered.org/u/BartButenaers)\
**Replies:** 5\
**Last updated:** [4 January 2021 23:08 UTC](https://discourse.nodered.org/t/best-practice-for-size-of-a-ui-node/38482 "2021-01-04T23:08:58Z")

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Hi folks, A few minutes ago, I announced a new node: node-red-contrib-ui-joystick. This node is based on nipplejs, which expects me to specify the size of the joystick widget in pixels: var options = { ... size:…

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## [Converting timestamp in excel](https://discourse.nodered.org/t/converting-timestamp-in-excel/38537)

<div class="topic-metadata">

**Author:** [@traderjoe](https://discourse.nodered.org/u/traderjoe)\
**Replies:** 8\
**Last updated:** [4 January 2021 23:04 UTC](https://discourse.nodered.org/t/converting-timestamp-in-excel/38537 "2021-01-04T23:04:51Z")

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I'm collecting data into a CSV file. I have timestamp followed by my data. The issue is the timestamp. The code works, and I'm logging the timestamp and data. But when I go to open in excel, I get the above. Colum…

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## [Set payload message with function node](https://discourse.nodered.org/t/set-payload-message-with-function-node/38551)

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**Author:** [@Bobbybau91](https://discourse.nodered.org/u/Bobbybau91)\
**Replies:** 4\
**Last updated:** [4 January 2021 22:29 UTC](https://discourse.nodered.org/t/set-payload-message-with-function-node/38551 "2021-01-04T22:29:15Z")

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Hello, first, sorry for my bad English and for my noob questions (I just started with node red). I have data I want to save in a .csv file. The problem ist, that the data quantity changes, so I don't need some time 3 da…

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## [Esp 32 and ws2812b leds](https://discourse.nodered.org/t/esp-32-and-ws2812b-leds/38533)

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**Author:** [@Newguy2021](https://discourse.nodered.org/u/Newguy2021)\
**Replies:** 5\
**Last updated:** [4 January 2021 21:19 UTC](https://discourse.nodered.org/t/esp-32-and-ws2812b-leds/38533 "2021-01-04T21:19:01Z")

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Hello I am very new to nodered and coding. I have gotten my led matrix blinking and color shifting like I want but now I would like to send messages to the matrix and scroll the text. Can someone point me in the general …

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## [Node-red Orange-Pi One stepper/analog/1wire hats](https://discourse.nodered.org/t/node-red-orange-pi-one-stepper-analog-1wire-hats/38441)

<div class="topic-metadata">

**Author:** [@m\_elias](https://discourse.nodered.org/u/m_elias)\
**Replies:** 6\
**Last updated:** [4 January 2021 21:17 UTC](https://discourse.nodered.org/t/node-red-orange-pi-one-stepper-analog-1wire-hats/38441 "2021-01-04T21:17:04Z")

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I'm looking for Orange-Pi One hats with well supported Node-red integration for reading four 1wire buses with several sensors on each bus, drive two stepper motors, read at least 4 analog inputs (10 bit of higher) and re…

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## [Development tools?](https://discourse.nodered.org/t/development-tools/35938)

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**Author:** [@LosinIt](https://discourse.nodered.org/u/LosinIt)\
**Replies:** 27\
**Last updated:** [4 January 2021 20:28 UTC](https://discourse.nodered.org/t/development-tools/35938 "2021-01-04T20:28:23Z")

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I haven't found any discussion of preferred tools for development, like an IDE. I'm sure some here just use a text editor but I find IDEs to be helpful because I mess around in several languages, none of them with any re…

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