# Latest

**URL:** https://discourse.nodered.org/latest.md?page=792

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

**Page:** 793

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## [15-Segment Lightbox with Node-Red and WLED](https://discourse.nodered.org/t/15-segment-lightbox-with-node-red-and-wled/47235)

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**Author:** [@AndrewShirley](https://discourse.nodered.org/u/AndrewShirley)\
**Replies:** 2\
**Last updated:** [17 June 2021 02:11 UTC](https://discourse.nodered.org/t/15-segment-lightbox-with-node-red-and-wled/47235 "2021-06-17T02:11:12Z")

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Hello everyone. This is my first post here but I've been using Node-Red for a couple of years now. Its one of my favourite pieces of software and I use it for many projects including home security and environmental con…

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## [Loop through an array and return index of a specific value](https://discourse.nodered.org/t/loop-through-an-array-and-return-index-of-a-specific-value/47063)

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**Author:** [@craigcurtin](https://discourse.nodered.org/u/craigcurtin)\
**Replies:** 13\
**Last updated:** [16 June 2021 23:03 UTC](https://discourse.nodered.org/t/loop-through-an-array-and-return-index-of-a-specific-value/47063 "2021-06-16T23:03:22Z")

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Hey Guys, I have a flow that does a query on my energy provider and this returns an array with 120 objects in it (1/2 hour increments of pricing for electricity) The first x (arbitrary number) of these are in the past …

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## [Use day time in function nodes](https://discourse.nodered.org/t/use-day-time-in-function-nodes/47243)

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**Author:** [@RonMa](https://discourse.nodered.org/u/RonMa)\
**Replies:** 3\
**Last updated:** [16 June 2021 19:36 UTC](https://discourse.nodered.org/t/use-day-time-in-function-nodes/47243 "2021-06-16T19:36:59Z")

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Hi Java Script heroes :slight\_smile: I have a really simple question but I just don't find any input on this in the forum. Here is what I would like to achieve: Within a function node, I would like to initiate different …

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## [Timer cant trigger second Timer \[solved\]](https://discourse.nodered.org/t/timer-cant-trigger-second-timer-solved/47241)

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**Author:** [@gotsila](https://discourse.nodered.org/u/gotsila)\
**Replies:** 2\
**Last updated:** [16 June 2021 18:17 UTC](https://discourse.nodered.org/t/timer-cant-trigger-second-timer-solved/47241 "2021-06-16T18:17:13Z")

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Hello, i have a Timer e.g. 3s this timer triggers then a Timer 8s. that's only working before i send a stop from other node. then the timer 3s couldn't trigger the timer 8s. i build an example flow: Testreihe 1 inj…

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## [Using Interval Length to send an email](https://discourse.nodered.org/t/using-interval-length-to-send-an-email/47252)

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**Author:** [@WarmCat](https://discourse.nodered.org/u/WarmCat)\
**Replies:** 2\
**Last updated:** [16 June 2021 16:15 UTC](https://discourse.nodered.org/t/using-interval-length-to-send-an-email/47252 "2021-06-16T16:15:30Z")

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Hi, I read from a MQTT topic, and if there is no message within a set time (say 10 minutes), I wish to send an email with the last MQTT message. Currently, the last MQTT message arrives as msg.payload into an interval-l…

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## [Export node red graph to pdf](https://discourse.nodered.org/t/export-node-red-graph-to-pdf/47229)

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**Author:** [@ultim0](https://discourse.nodered.org/u/ultim0)\
**Replies:** 0\
**Last updated:** [16 June 2021 11:08 UTC](https://discourse.nodered.org/t/export-node-red-graph-to-pdf/47229 "2021-06-16T11:08:58Z")

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I need help, how can I export a node red graph to .pdf or another format? thank you

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## [Encode Error with OPCUA-Browser Node](https://discourse.nodered.org/t/encode-error-with-opcua-browser-node/45270)

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**Author:** [@LeFish](https://discourse.nodered.org/u/LeFish)\
**Replies:** 1\
**Last updated:** [16 June 2021 11:04 UTC](https://discourse.nodered.org/t/encode-error-with-opcua-browser-node/45270 "2021-06-16T11:04:30Z")

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I am using the node-red-contrib-opcua node version 0.2.117 in NodeRed on a Raspberry Pi. On the same system I have CodeSys running with an OPCUA-Server enabled. For developing I try to browse a part of my OPCUA-Dashboar…

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## [How to read/get state from ui-switch?](https://discourse.nodered.org/t/how-to-read-get-state-from-ui-switch/47194)

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**Author:** [@tutenchamun](https://discourse.nodered.org/u/tutenchamun)\
**Replies:** 5\
**Last updated:** [16 June 2021 10:21 UTC](https://discourse.nodered.org/t/how-to-read-get-state-from-ui-switch/47194 "2021-06-16T10:21:48Z")

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I intend to use ui-switches to set certain states/options on the fly from within the UI. Now the flow (partly automated through timers) should behave differently according to these settings. For this purpose, I would n…

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## [Concatenation of two numeric values](https://discourse.nodered.org/t/concatenation-of-two-numeric-values/47207)

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**Author:** [@achrefnajjar](https://discourse.nodered.org/u/achrefnajjar)\
**Replies:** 4\
**Last updated:** [16 June 2021 10:03 UTC](https://discourse.nodered.org/t/concatenation-of-two-numeric-values/47207 "2021-06-16T10:03:34Z")

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hello, can anyone tell me why do i have NaN on my payload output ? thanks.

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## [Mongo db connection](https://discourse.nodered.org/t/mongo-db-connection/47217)

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**Author:** [@OmkarNodered](https://discourse.nodered.org/u/OmkarNodered)\
**Replies:** 1\
**Last updated:** [16 June 2021 09:53 UTC](https://discourse.nodered.org/t/mongo-db-connection/47217 "2021-06-16T09:53:42Z")

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I am trying to connect to "mongo-db in" node but it is showing MongoError: Authentication failed.

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## [Error during inject into database](https://discourse.nodered.org/t/error-during-inject-into-database/47205)

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**Author:** [@sarah](https://discourse.nodered.org/u/sarah)\
**Replies:** 5\
**Last updated:** [16 June 2021 09:53 UTC](https://discourse.nodered.org/t/error-during-inject-into-database/47205 "2021-06-16T09:53:12Z")

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Hi there! I'm creating flow to get csv data from opengov website. the csv data contain daily vaccination and I want to put into my database, during the process I face some problem regarding the rows that I want to exclu…

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## [Mongo db in node red](https://discourse.nodered.org/t/mongo-db-in-node-red/47216)

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**Author:** [@OmkarNodered](https://discourse.nodered.org/u/OmkarNodered)\
**Replies:** 1\
**Last updated:** [16 June 2021 09:52 UTC](https://discourse.nodered.org/t/mongo-db-in-node-red/47216 "2021-06-16T09:52:13Z")

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I have installed mongo db connector in node red. My mongo db collection has date values in timestamp format. I just want to write a query using mongo db connector so that I should get only last 8 hours date values. How c…

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## [How to loop data from HTTP Request Node?](https://discourse.nodered.org/t/how-to-loop-data-from-http-request-node/44012)

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**Author:** [@marwinwijaya](https://discourse.nodered.org/u/marwinwijaya)\
**Replies:** 4\
**Last updated:** [16 June 2021 08:59 UTC](https://discourse.nodered.org/t/how-to-loop-data-from-http-request-node/44012 "2021-06-16T08:59:45Z")

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I have the HTTP Request Node result data in the form of an Array in the image below, how do I make the data loop to be entered into the MySQL database? One array has several objects, the object variables can be seen …

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## [MySQL Cluster (3 nodes) with MySQL node](https://discourse.nodered.org/t/mysql-cluster-3-nodes-with-mysql-node/47181)

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**Author:** [@janedoe123](https://discourse.nodered.org/u/janedoe123)\
**Replies:** 4\
**Last updated:** [16 June 2021 08:51 UTC](https://discourse.nodered.org/t/mysql-cluster-3-nodes-with-mysql-node/47181 "2021-06-16T08:51:12Z")

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Hello all, I know that a standalone mySQL server can be connected to node-red via the mySQL node meant for that. However my question is, can we connect a mySQL cluster (composed of 3 nodes) to node-red, using the same …

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## [Flows don't start: \`\[warn\] Error loading flows: TypeError: Cannot read property 'hasOwnProperty' of undefined\`](https://discourse.nodered.org/t/flows-dont-start-warn-error-loading-flows-typeerror-cannot-read-property-hasownproperty-of-undefined/47221)

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**Author:** [@tfr](https://discourse.nodered.org/u/tfr)\
**Replies:** 1\
**Last updated:** [16 June 2021 08:44 UTC](https://discourse.nodered.org/t/flows-dont-start-warn-error-loading-flows-typeerror-cannot-read-property-hasownproperty-of-undefined/47221 "2021-06-16T08:44:51Z")

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Hello I am trying to setup a gitlab CI pipeline. When running starting node-red under Windows it works. When starting under WSL (Linux) it works. When running inside Docker it works. However, with the gitlab runner it …

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## [Chart from mysql node-red date to date](https://discourse.nodered.org/t/chart-from-mysql-node-red-date-to-date/47224)

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**Author:** [@Andrea74](https://discourse.nodered.org/u/Andrea74)\
**Replies:** 1\
**Last updated:** [16 June 2021 08:10 UTC](https://discourse.nodered.org/t/chart-from-mysql-node-red-date-to-date/47224 "2021-06-16T08:10:05Z")

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Hi all, I need to create a simple chart from a mysql table from a starting time to an ending time, do you have a simple example to post to me? Thanks a lot. Andrea.

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## [HA with Rqlite/Dqlite and Node-RED?](https://discourse.nodered.org/t/ha-with-rqlite-dqlite-and-node-red/47033)

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**Author:** [@janedoe123](https://discourse.nodered.org/u/janedoe123)\
**Replies:** 5\
**Last updated:** [16 June 2021 07:12 UTC](https://discourse.nodered.org/t/ha-with-rqlite-dqlite-and-node-red/47033 "2021-06-16T07:12:19Z")

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Hi all I've buillt a small rqlite cluster (3 nodes) and I would like to use the sqlite node to connect to it. Since this database is a distant one (I.e. not running in the same server where node-red runs) and provides …

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## [Windows 10 \[error\] Failed to start server: \[error\] TypeError: Cannot read property](https://discourse.nodered.org/t/windows-10-error-failed-to-start-server-error-typeerror-cannot-read-property/18600)

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**Author:** [@atlesjoblom](https://discourse.nodered.org/u/atlesjoblom)\
**Replies:** 18\
**Last updated:** [16 June 2021 07:06 UTC](https://discourse.nodered.org/t/windows-10-error-failed-to-start-server-error-typeerror-cannot-read-property/18600 "2021-06-16T07:06:49Z")

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After new install I get this..... Anybody know how to fix this...... C:\>node-red 29 Nov 10:58:28 - \[info\] Welcome to Node-RED 29 Nov 10:58:28 - \[info\] Node-RED version: v1.0.3 29 Nov 10:58:28 - \[info\] Node.js versi…

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## [How to get value in txt file?](https://discourse.nodered.org/t/how-to-get-value-in-txt-file/47212)

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**Author:** [@toantq](https://discourse.nodered.org/u/toantq)\
**Replies:** 1\
**Last updated:** [16 June 2021 07:04 UTC](https://discourse.nodered.org/t/how-to-get-value-in-txt-file/47212 "2021-06-16T07:04:15Z")

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Hi everyone, I have issue that I want get data from txt file, but I not good Javascript, so I dont know how to get it, Example I want get value " PH = 0 " Col1 and Col2 in 0: object

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## [Import-Export flows](https://discourse.nodered.org/t/import-export-flows/47128)

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**Author:** [@OmkarNodered](https://discourse.nodered.org/u/OmkarNodered)\
**Replies:** 5\
**Last updated:** [16 June 2021 06:17 UTC](https://discourse.nodered.org/t/import-export-flows/47128 "2021-06-16T06:17:38Z")

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I have a node red flow having opc ua package and mongo db package. I want to export flow so that it should be run on another machine, so How can I export such flow along with installed packages?

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## [MQTT SSL/TLS connection](https://discourse.nodered.org/t/mqtt-ssl-tls-connection/16156)

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**Author:** [@ChrisO](https://discourse.nodered.org/u/ChrisO)\
**Replies:** 26\
**Last updated:** [16 June 2021 03:57 UTC](https://discourse.nodered.org/t/mqtt-ssl-tls-connection/16156 "2021-06-16T03:57:07Z")

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Hi All I'm trying to configure an MQTT in to use SSL/TLS security. I have created ca, client, and server crt files ca, client, and server key files. We are using a Mosqitto MQTT broker, in which I have changed the c…

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## [Reading tags from Allen Bradley Micrologix 1400](https://discourse.nodered.org/t/reading-tags-from-allen-bradley-micrologix-1400/15952)

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**Author:** [@spatel](https://discourse.nodered.org/u/spatel)\
**Replies:** 15\
**Last updated:** [16 June 2021 03:35 UTC](https://discourse.nodered.org/t/reading-tags-from-allen-bradley-micrologix-1400/15952 "2021-06-16T03:35:11Z")

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Hello, Since I am new to Node-Red I don't know, how to read tags from Micrologix 1400 PLC. I tried PCCC Node and Ethernet Ip node but it doesn't do anything. Can you please show me the right direction to get started.

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## [Welcome to the node-red dashboard ERROR](https://discourse.nodered.org/t/welcome-to-the-node-red-dashboard-error/47003)

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**Author:** [@Atzumu](https://discourse.nodered.org/u/Atzumu)\
**Replies:** 2\
**Last updated:** [16 June 2021 02:54 UTC](https://discourse.nodered.org/t/welcome-to-the-node-red-dashboard-error/47003 "2021-06-16T02:54:50Z")

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the dashboard does not deploy, I'm trying to use it from my Raspberry pi 4 and from my windows PC. I really don't know what to do. Pls Help :C

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## [Get Value Numeric Input](https://discourse.nodered.org/t/get-value-numeric-input/15332)

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**Author:** [@rwiest](https://discourse.nodered.org/u/rwiest)\
**Replies:** 5\
**Last updated:** [15 June 2021 23:17 UTC](https://discourse.nodered.org/t/get-value-numeric-input/15332 "2021-06-15T23:17:07Z")

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Hello, how can I get with a button the value registered in numeric input?

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## [Rename "Connection Lost" message](https://discourse.nodered.org/t/rename-connection-lost-message/47197)

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**Author:** [@thejollypop](https://discourse.nodered.org/u/thejollypop)\
**Replies:** 1\
**Last updated:** [15 June 2021 21:18 UTC](https://discourse.nodered.org/t/rename-connection-lost-message/47197 "2021-06-15T21:18:51Z")

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Hi All, When trying to upload a file bigger than 1MB (not only, see flow below) I always get the famous "Connection lost" message. Although this issue has been discussed numerous times before, it might be possible to…

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## [UI with selectable AIS ship target list](https://discourse.nodered.org/t/ui-with-selectable-ais-ship-target-list/46001)

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**Author:** [@AlbBue](https://discourse.nodered.org/u/AlbBue)\
**Replies:** 31\
**Last updated:** [15 June 2021 21:07 UTC](https://discourse.nodered.org/t/ui-with-selectable-ais-ship-target-list/46001 "2021-06-15T21:07:36Z")

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Hello, I am trying to create a Dashboard, where I can pick a ship/target from a drop-down list and display it's data... So far I set up a tcp:port where I receive AIS-NMEA data constantly. The "ais"-node transforms the…

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## [Need some help with node-red-contrib-image-tools](https://discourse.nodered.org/t/need-some-help-with-node-red-contrib-image-tools/46350)

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**Author:** [@RaptorUK](https://discourse.nodered.org/u/RaptorUK)\
**Replies:** 9\
**Last updated:** [15 June 2021 19:20 UTC](https://discourse.nodered.org/t/need-some-help-with-node-red-contrib-image-tools/46350 "2021-06-15T19:20:41Z")

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Hi Folks, Steve, I'm trying to use node-red-contrib-image-tools to create a label to be output to a Dymo LabelWriter 450. After some head scratching a couple of days ago I managed to get my pi 3B talking to the Dymo pr…

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## [Dropbox Node Direct Folder Issue](https://discourse.nodered.org/t/dropbox-node-direct-folder-issue/47188)

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**Author:** [@edwardr](https://discourse.nodered.org/u/edwardr)\
**Replies:** 1\
**Last updated:** [15 June 2021 19:17 UTC](https://discourse.nodered.org/t/dropbox-node-direct-folder-issue/47188 "2021-06-15T19:17:39Z")

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Hello Folks, I am currently using the Dropbox node to upload txt files to my dropbox. The issue is the node only uploads the documents to my dropbox and not a specific folder within it. Is there a method or setting in t…

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## [GPIO input pin sometimes stopped](https://discourse.nodered.org/t/gpio-input-pin-sometimes-stopped/47178)

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**Author:** [@dbunic](https://discourse.nodered.org/u/dbunic)\
**Replies:** 4\
**Last updated:** [15 June 2021 18:16 UTC](https://discourse.nodered.org/t/gpio-input-pin-sometimes-stopped/47178 "2021-06-15T18:16:23Z")

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Hi, this is my first post and I must admit that node-red is fantastic piece of software. Every task can be made with a great level of elegance and everything is transparent ... drag&drop in browser :slight\_smile: OK, i…

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## [Thresholds missing in Dynamic Hysterises](https://discourse.nodered.org/t/thresholds-missing-in-dynamic-hysterises/47179)

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**Author:** [@KrishnanRavichandran](https://discourse.nodered.org/u/KrishnanRavichandran)\
**Replies:** 5\
**Last updated:** [15 June 2021 16:35 UTC](https://discourse.nodered.org/t/thresholds-missing-in-dynamic-hysterises/47179 "2021-06-15T16:35:58Z")

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Can someone explain the working or application of Dynamic Hysterises? I am new to Node red and find it difficult to make use without understanding. Also, when I try to use it, I get the 'Thresholds missing' error. Than…

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