# Latest

**URL:** https://discourse.nodered.org/latest.md?page=968

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

**Page:** 969

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## [\[node: "Join"\] Add support for parts grouping in manual mode](https://discourse.nodered.org/t/node-join-add-support-for-parts-grouping-in-manual-mode/35048)

<div class="topic-metadata">

**Author:** [@tmdoit](https://discourse.nodered.org/u/tmdoit)\
**Replies:** 0\
**Last updated:** [29 October 2020 23:46 UTC](https://discourse.nodered.org/t/node-join-add-support-for-parts-grouping-in-manual-mode/35048 "2020-10-29T23:46:55Z")

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Hello, my use case is that I'm using database node which streams query result - msg per row. DB node adds to each msg msg.parts.id and when stream finishes, sends msg.complete set to true (with msg.payload set to undefi…

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## [Node-red won't work after Ubuntu update](https://discourse.nodered.org/t/node-red-wont-work-after-ubuntu-update/35006)

<div class="topic-metadata">

**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 15\
**Last updated:** [29 October 2020 22:16 UTC](https://discourse.nodered.org/t/node-red-wont-work-after-ubuntu-update/35006 "2020-10-29T22:16:30Z")

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I have just updated to the Gorilla version of Ubuntu. I went from Beaver to the F version and Node-Red worked. Today I got the G version installed. Alas some time there after that, I checked NR and it wasn't working. …

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## [Custom middleware on dashboard nodes?](https://discourse.nodered.org/t/custom-middleware-on-dashboard-nodes/35041)

<div class="topic-metadata">

**Author:** [@Stwissel](https://discourse.nodered.org/u/Stwissel)\
**Replies:** 1\
**Last updated:** [29 October 2020 21:40 UTC](https://discourse.nodered.org/t/custom-middleware-on-dashboard-nodes/35041 "2020-10-29T21:40:16Z")

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The security documentation mentions Custom Middleware. For http-in nodes it works as advertised. However I'd like to use it for dashboard access too. What do I need to do? From a first view the potential option is to em…

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## [Secure MQTT connection](https://discourse.nodered.org/t/secure-mqtt-connection/34943)

<div class="topic-metadata">

**Author:** [@saeed1](https://discourse.nodered.org/u/saeed1)\
**Replies:** 11\
**Last updated:** [29 October 2020 20:50 UTC](https://discourse.nodered.org/t/secure-mqtt-connection/34943 "2020-10-29T20:50:35Z")

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I have client (Raspberry pi). On raspberry mosquitto and node red are running. On ther side i have rented a server on a cloud.On sever also mosquitto and node-red are running. Obviously, i would not let every body to sen…

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## [How replace two nodes of "changes" with one node of "function"?](https://discourse.nodered.org/t/how-replace-two-nodes-of-changes-with-one-node-of-function/35039)

<div class="topic-metadata">

**Author:** [@Zerg](https://discourse.nodered.org/u/Zerg)\
**Replies:** 3\
**Last updated:** [29 October 2020 20:42 UTC](https://discourse.nodered.org/t/how-replace-two-nodes-of-changes-with-one-node-of-function/35039 "2020-10-29T20:42:22Z")

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I want to replace two nodes of "changes" with one node of "function". But, I do something wrong. Could you help me, please! Idea is enable / disable the dashboard switch by "function" node. my code of "function" node. …

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## [How to deploy node red flow](https://discourse.nodered.org/t/how-to-deploy-node-red-flow/35036)

<div class="topic-metadata">

**Author:** [@Rohit](https://discourse.nodered.org/u/Rohit)\
**Replies:** 1\
**Last updated:** [29 October 2020 17:56 UTC](https://discourse.nodered.org/t/how-to-deploy-node-red-flow/35036 "2020-10-29T17:56:11Z")

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Hello all, Could anybody help me in deploying the node-red flow(.json format), I thought of considering the MS Azure platform if you any related material or anything pertaining to the deployment will be helpful.

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## [Read variable from OMRON](https://discourse.nodered.org/t/read-variable-from-omron/9727)

<div class="topic-metadata">

**Author:** [@hathemi](https://discourse.nodered.org/u/hathemi)\
**Replies:** 56\
**Last updated:** [29 October 2020 13:35 UTC](https://discourse.nodered.org/t/read-variable-from-omron/9727 "2020-10-29T13:35:01Z")

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How can i be able to read variable sent from OMRON PLC ?? i have have successfuly connect to serial port (Com4) but still not able to read data ?? Any idea PLZ ?

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## [How to get rid of this annyoing popup](https://discourse.nodered.org/t/how-to-get-rid-of-this-annyoing-popup/35012)

<div class="topic-metadata">

**Author:** [@realjax](https://discourse.nodered.org/u/realjax)\
**Replies:** 2\
**Last updated:** [29 October 2020 12:55 UTC](https://discourse.nodered.org/t/how-to-get-rid-of-this-annyoing-popup/35012 "2020-10-29T12:55:54Z")

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I am not interested in creating a project however, I am fed this annoying popup every time I open up admin. How can I get rid of it? ( without being forced to create a project of course)

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## [OPCUa write not writing](https://discourse.nodered.org/t/opcua-write-not-writing/32538)

<div class="topic-metadata">

**Author:** [@vishalk](https://discourse.nodered.org/u/vishalk)\
**Replies:** 5\
**Last updated:** [29 October 2020 12:26 UTC](https://discourse.nodered.org/t/opcua-write-not-writing/32538 "2020-10-29T12:26:58Z")

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Hello, I am trying to write boolean value to my plc with OPCUa write node. but its not writing looks like there is issue with the OPCUa write node because even other bits are not writable. I have also readed many bit…

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## [How to add to array elements?](https://discourse.nodered.org/t/how-to-add-to-array-elements/34981)

<div class="topic-metadata">

**Author:** [@Zerg](https://discourse.nodered.org/u/Zerg)\
**Replies:** 3\
**Last updated:** [29 October 2020 10:27 UTC](https://discourse.nodered.org/t/how-to-add-to-array-elements/34981 "2020-10-29T10:27:24Z")

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Could you help me to add an element/elements to the array and then display array in the debug window. I do something wrong! var array = flow.get('array') || ""; flow.set("array", flow.get("array").push(msg.payload)); …

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## [\[Announce\] Dashboard 2.23.0, 1, 2, 3, 4, 5](https://discourse.nodered.org/t/announce-dashboard-2-23-0-1-2-3-4-5/29853)

<div class="topic-metadata">

**Author:** [@dceejay](https://discourse.nodered.org/u/dceejay)\
**Replies:** 19\
**Last updated:** [29 October 2020 10:23 UTC](https://discourse.nodered.org/t/announce-dashboard-2-23-0-1-2-3-4-5/29853 "2020-10-29T10:23:35Z")

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Been a while so just a few small fixes. mainly to include the underlying Angular security patch. Enhancements Fix custom colour sidebar choice to actually work. Dropdown multi-select now allows select/deselect all. PR…

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## [I Can't Install Alibabacloud](https://discourse.nodered.org/t/i-cant-install-alibabacloud/35015)

<div class="topic-metadata">

**Author:** [@ztmaung](https://discourse.nodered.org/u/ztmaung)\
**Replies:** 10\
**Last updated:** [29 October 2020 10:07 UTC](https://discourse.nodered.org/t/i-cant-install-alibabacloud/35015 "2020-10-29T10:07:38Z")

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Not Appear in Nodes Panel

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## [OPC ua writing to simatic plc not happening](https://discourse.nodered.org/t/opc-ua-writing-to-simatic-plc-not-happening/35014)

<div class="topic-metadata">

**Author:** [@vishalk](https://discourse.nodered.org/u/vishalk)\
**Replies:** 0\
**Last updated:** [29 October 2020 09:33 UTC](https://discourse.nodered.org/t/opc-ua-writing-to-simatic-plc-not-happening/35014 "2020-10-29T09:33:10Z")

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Hello, I am trying to write to my simatic plc with opc ua node, opc ua iiot node was recommended earlier but in my node red I could not find this node to install node red version v1.1.3 windows 10 enterprise plc sie…

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## [Voice Control system over a local network](https://discourse.nodered.org/t/voice-control-system-over-a-local-network/35002)

<div class="topic-metadata">

**Author:** [@kshitiz](https://discourse.nodered.org/u/kshitiz)\
**Replies:** 1\
**Last updated:** [29 October 2020 06:00 UTC](https://discourse.nodered.org/t/voice-control-system-over-a-local-network/35002 "2020-10-29T06:00:40Z")

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Hello everyone, I am doing a project where I have to control a lighting system(turn on/off and basic settings) using voice command within a local network i.e. No Internet. I am new to this NodeRed so can you please sugg…

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## [Will asynchronous change in a context variable with flow-scope, be immediately noticed by other nodes in the flow?](https://discourse.nodered.org/t/will-asynchronous-change-in-a-context-variable-with-flow-scope-be-immediately-noticed-by-other-nodes-in-the-flow/34897)

<div class="topic-metadata">

**Author:** [@philips.koshy](https://discourse.nodered.org/u/philips.koshy)\
**Replies:** 17\
**Last updated:** [29 October 2020 05:08 UTC](https://discourse.nodered.org/t/will-asynchronous-change-in-a-context-variable-with-flow-scope-be-immediately-noticed-by-other-nodes-in-the-flow/34897 "2020-10-29T05:08:50Z")

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I'm new to nodered. I'd like to set a context variable with flow scope to control another node in the same page. But, I get "SyntaxError: Invalid or unexpected token (body:line 1)" \[{"id":"db8cd33d.d63fb","type":"ui\_but…

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## [Documentation of Node-Red project](https://discourse.nodered.org/t/documentation-of-node-red-project/34680)

<div class="topic-metadata">

**Author:** [@edstobi](https://discourse.nodered.org/u/edstobi)\
**Replies:** 5\
**Last updated:** [29 October 2020 03:06 UTC](https://discourse.nodered.org/t/documentation-of-node-red-project/34680 "2020-10-29T03:06:49Z")

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Hello i set up several flows which have become quite complex and where i invested a lot of time and testing. This I now have to hand over as hardware together with a documentation. I wanted to ask you how you document…

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## [Script to collect information hourly](https://discourse.nodered.org/t/script-to-collect-information-hourly/34991)

<div class="topic-metadata">

**Author:** [@leoaabreu1997](https://discourse.nodered.org/u/leoaabreu1997)\
**Replies:** 1\
**Last updated:** [28 October 2020 22:57 UTC](https://discourse.nodered.org/t/script-to-collect-information-hourly/34991 "2020-10-28T22:57:22Z")

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I need to create a flow to collect information and store it every hour. Example: hour1 (00:00:00 to 00:59:59) = 10 hour2 (01:00:00 to 01:59:59) = 20 ... hour24 (23:00:00 to 23:59:59) = 13 For each hour there will be…

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## [Tahoma nodes only list "TAHOMA" as available device](https://discourse.nodered.org/t/tahoma-nodes-only-list-tahoma-as-available-device/34985)

<div class="topic-metadata">

**Author:** [@superfladdy](https://discourse.nodered.org/u/superfladdy)\
**Replies:** 1\
**Last updated:** [28 October 2020 22:20 UTC](https://discourse.nodered.org/t/tahoma-nodes-only-list-tahoma-as-available-device/34985 "2020-10-28T22:20:04Z")

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I've successfully connected my Tahoma box with the config node and have multiple devices registered and configured on the Tahoma itself. However, when adding Tahoma nodes, the only device that is appearing the device dro…

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## [Sending Unicode characters via HTTP Request](https://discourse.nodered.org/t/sending-unicode-characters-via-http-request/34990)

<div class="topic-metadata">

**Author:** [@darkdude](https://discourse.nodered.org/u/darkdude)\
**Replies:** 0\
**Last updated:** [28 October 2020 22:18 UTC](https://discourse.nodered.org/t/sending-unicode-characters-via-http-request/34990 "2020-10-28T22:18:20Z")

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I need to interface a TTS service. Input for TTS is sent via POST requests. The message needs to include country-specific characters in Unicode. On this flow: \[{"id":"f133ea37.e26a98","type":"http request","z":"7e633a…

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## [Best way to connect multiple serial UART sensors to Node-Red?](https://discourse.nodered.org/t/best-way-to-connect-multiple-serial-uart-sensors-to-node-red/34980)

<div class="topic-metadata">

**Author:** [@dr\_cave\_dweller](https://discourse.nodered.org/u/dr_cave_dweller)\
**Replies:** 2\
**Last updated:** [28 October 2020 22:18 UTC](https://discourse.nodered.org/t/best-way-to-connect-multiple-serial-uart-sensors-to-node-red/34980 "2020-10-28T22:18:08Z")

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I have a sensor that outputs serial UART data. I connected it to a Raspberry Pi4 using a FTDI chip/cable into the USB port. Bluetooth is disabled so I am using PL011 as the primary UART (I am not using the mini UART), i…

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## [NodeRed+Plotly Zoom Event](https://discourse.nodered.org/t/nodered-plotly-zoom-event/34681)

<div class="topic-metadata">

**Author:** [@Cristiano](https://discourse.nodered.org/u/Cristiano)\
**Replies:** 5\
**Last updated:** [28 October 2020 21:53 UTC](https://discourse.nodered.org/t/nodered-plotly-zoom-event/34681 "2020-10-28T21:53:33Z")

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Hello, I'm using the plotly to show my trends, but i have a small problem with zoom event, i want to receive a msg in my node red with zoom data, im already receiving this information, but when i recevi the data my char…

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## [Configurable number of outputs for subflow instances](https://discourse.nodered.org/t/configurable-number-of-outputs-for-subflow-instances/34984)

<div class="topic-metadata">

**Author:** [@mhechthz](https://discourse.nodered.org/u/mhechthz)\
**Replies:** 2\
**Last updated:** [28 October 2020 21:46 UTC](https://discourse.nodered.org/t/configurable-number-of-outputs-for-subflow-instances/34984 "2020-10-28T21:46:26Z")

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Hi, I have a function node that is dynamically configured via input to have one to many (e.g. 4 or 5) outputs, i.e. the output message object is a configurable field of messages. For a deployed flow the number of output…

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## [Transfer data from robot controller to Node-red](https://discourse.nodered.org/t/transfer-data-from-robot-controller-to-node-red/34976)

<div class="topic-metadata">

**Author:** [@Anne](https://discourse.nodered.org/u/Anne)\
**Replies:** 8\
**Last updated:** [28 October 2020 21:24 UTC](https://discourse.nodered.org/t/transfer-data-from-robot-controller-to-node-red/34976 "2020-10-28T21:24:34Z")

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hi everyone, Does anyone here have experience in sending data from robot controller to Node-red?

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## [How to stop flow backup file being generated?](https://discourse.nodered.org/t/how-to-stop-flow-backup-file-being-generated/34853)

<div class="topic-metadata">

**Author:** [@dr\_cave\_dweller](https://discourse.nodered.org/u/dr_cave_dweller)\
**Replies:** 14\
**Last updated:** [28 October 2020 20:43 UTC](https://discourse.nodered.org/t/how-to-stop-flow-backup-file-being-generated/34853 "2020-10-28T20:43:54Z")

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I have seen alot of historical posts here about creating and automating flow backups, but nothing about stopping it from being generated. Can someone please clarify when a flow.backup is created in Node-Red? Does it hap…

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## [\[Resolved\] Cannot find Arduino port in Serial In or Serial Out nodes](https://discourse.nodered.org/t/resolved-cannot-find-arduino-port-in-serial-in-or-serial-out-nodes/34916)

<div class="topic-metadata">

**Author:** [@Huda](https://discourse.nodered.org/u/Huda)\
**Replies:** 14\
**Last updated:** [28 October 2020 20:23 UTC](https://discourse.nodered.org/t/resolved-cannot-find-arduino-port-in-serial-in-or-serial-out-nodes/34916 "2020-10-28T20:23:16Z")

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Hello, I am extremely new to Node Red, so I apologize if this is a simple question, but I cannot seem to be able to connect my Arduino to the Serial In or Out nodes. I am using the browser version of node red, and my Ar…

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## [Change a variable name with a variable](https://discourse.nodered.org/t/change-a-variable-name-with-a-variable/34719)

<div class="topic-metadata">

**Author:** [@rothestar](https://discourse.nodered.org/u/rothestar)\
**Replies:** 11\
**Last updated:** [28 October 2020 20:00 UTC](https://discourse.nodered.org/t/change-a-variable-name-with-a-variable/34719 "2020-10-28T20:00:27Z")

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Hi there is it psiisble to change a variable name with another variable... or is there a smarter way?? Doing son floor heating calculations I need multiple heating zones, in a function I have defined these variables 0…

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## [Help with regex replace](https://discourse.nodered.org/t/help-with-regex-replace/34933)

<div class="topic-metadata">

**Author:** [@Hunter](https://discourse.nodered.org/u/Hunter)\
**Replies:** 7\
**Last updated:** [28 October 2020 19:56 UTC](https://discourse.nodered.org/t/help-with-regex-replace/34933 "2020-10-28T19:56:06Z")

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Hello, I'm parsing a buffer with several lines of content, like; Monday: John Tuesday: Michael Wednesday: Martin etc I would like the first word, in this example the day, to be matched. My words allways start with …

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## [SVG challenge linear gradients](https://discourse.nodered.org/t/svg-challenge-linear-gradients/34597)

<div class="topic-metadata">

**Author:** [@rothestar](https://discourse.nodered.org/u/rothestar)\
**Replies:** 1\
**Last updated:** [28 October 2020 19:35 UTC](https://discourse.nodered.org/t/svg-challenge-linear-gradients/34597 "2020-10-28T19:35:12Z")

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As part of a heat pump simulator I want to display the hot water level i the tank. In design mode I can adjuste the height and the diameter of the tank. As part of the sim I would also like to set the hotwater level (in…

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## [Material Design Icon Broken? The 'outlet' icon does not seem to be found?](https://discourse.nodered.org/t/material-design-icon-broken-the-outlet-icon-does-not-seem-to-be-found/34974)

<div class="topic-metadata">

**Author:** [@Nodi.Rubrum](https://discourse.nodered.org/u/Nodi.Rubrum)\
**Replies:** 1\
**Last updated:** [28 October 2020 18:53 UTC](https://discourse.nodered.org/t/material-design-icon-broken-the-outlet-icon-does-not-seem-to-be-found/34974 "2020-10-28T18:53:47Z")

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I tried 'book', 'looks\_3', etc. these MD icons works. But 'outlet' fails? \[{"id":"d76a7e66.86411","type":"inject","z":"9c329f76.c5be1","name":"On","props":\[{"p":"payload"}\],"repeat":"","crontab":"","once":true,"onceDel…

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## [RS232 to Modbus TCP - Rego 637](https://discourse.nodered.org/t/rs232-to-modbus-tcp-rego-637/34934)

<div class="topic-metadata">

**Author:** [@pimpera](https://discourse.nodered.org/u/pimpera)\
**Replies:** 0\
**Last updated:** [28 October 2020 07:47 UTC](https://discourse.nodered.org/t/rs232-to-modbus-tcp-rego-637/34934 "2020-10-28T07:47:32Z")

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Hello. I try to. I'm learning. But I don't know how to do it. I have a Raspberry PI 3B +. I need an RS232 to Modbus TCP converter. I have a REGO 637 regulation. The protocol is on the web: \[http://rago600.sourceforge…

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