# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=148

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**Page:** 149

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## [Opcua has high latency when subscribing to large amounts of data](https://discourse.nodered.org/t/opcua-has-high-latency-when-subscribing-to-large-amounts-of-data/83953)

<div class="topic-metadata">

**Author:** [@xpxiong](https://discourse.nodered.org/u/xpxiong)\
**Replies:** 0\
**Last updated:** [22 December 2023 11:32 UTC](https://discourse.nodered.org/t/opcua-has-high-latency-when-subscribing-to-large-amounts-of-data/83953 "2023-12-22T11:32:01Z")

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I subscribed to more than 400 data using the opcua-client node, but by the time the data returned, it had already occurred for more than ten seconds

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## [Tuya node keeps killing my dashboard](https://discourse.nodered.org/t/tuya-node-keeps-killing-my-dashboard/83941)

<div class="topic-metadata">

**Author:** [@Sirhc](https://discourse.nodered.org/u/Sirhc)\
**Replies:** 0\
**Last updated:** [22 December 2023 02:19 UTC](https://discourse.nodered.org/t/tuya-node-keeps-killing-my-dashboard/83941 "2023-12-22T02:19:54Z")

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Hello I have a TUYA node connecting to a switch. Sometimes the switch doesn't connect and when it keeps trying to re-connect, it kills my dashboard repeatedly Is there a way to stop this from happening?

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## [Something very weird is happening to my messages enroute](https://discourse.nodered.org/t/something-very-weird-is-happening-to-my-messages-enroute/83940)

<div class="topic-metadata">

**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 10\
**Last updated:** [21 December 2023 23:24 UTC](https://discourse.nodered.org/t/something-very-weird-is-happening-to-my-messages-enroute/83940 "2023-12-21T23:24:13Z")

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Folks, this is as convoluted as it gets. NR 3.0.2 RasPi Buster pi@TelePi:~ $ node -v v14.18.1 pi@TelePi:~ $ Yes, I am a bit of a subflow adict. I also have a node resend last message installed for the exact reason…

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## [Bug in function editor (Cannot redeclare block-scoped variable)](https://discourse.nodered.org/t/bug-in-function-editor-cannot-redeclare-block-scoped-variable/83937)

<div class="topic-metadata">

**Author:** [@Mike-FUT](https://discourse.nodered.org/u/Mike-FUT)\
**Replies:** 24\
**Last updated:** [21 December 2023 21:57 UTC](https://discourse.nodered.org/t/bug-in-function-editor-cannot-redeclare-block-scoped-variable/83937 "2023-12-21T21:57:27Z")

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Hi All, I'm surprised I didn't find anyone else to report this bug: When using constants or variables in a function node with the same name both at the "On Start" and "On Message" section the editor throws an error mes…

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## [Problem with change nodes out of nowhere earlier today](https://discourse.nodered.org/t/problem-with-change-nodes-out-of-nowhere-earlier-today/83932)

<div class="topic-metadata">

**Author:** [@Dyslexicbloke](https://discourse.nodered.org/u/Dyslexicbloke)\
**Replies:** 16\
**Last updated:** [21 December 2023 21:21 UTC](https://discourse.nodered.org/t/problem-with-change-nodes-out-of-nowhere-earlier-today/83932 "2023-12-21T21:21:40Z")

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This has been working just fine for well over 8 months... had a power cut earlier today and now many if not all change nodes with this type of function returning a value are failing and spitting out either Undefined …

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## [Tuya devices and MQTT](https://discourse.nodered.org/t/tuya-devices-and-mqtt/83867)

<div class="topic-metadata">

**Author:** [@Sirhc](https://discourse.nodered.org/u/Sirhc)\
**Replies:** 4\
**Last updated:** [21 December 2023 20:08 UTC](https://discourse.nodered.org/t/tuya-devices-and-mqtt/83867 "2023-12-21T20:08:11Z")

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Hello I have a few WIFI switches on my nodered system. They all communicate using node-red-contrib-tuya-local and it's working fine. Just wondering, is there a way to communicate with them directly using an MQTT node? …

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## ["nrgpio python command not running" error](https://discourse.nodered.org/t/nrgpio-python-command-not-running-error/83388)

<div class="topic-metadata">

**Author:** [@ebastler](https://discourse.nodered.org/u/ebastler)\
**Replies:** 24\
**Last updated:** [21 December 2023 17:04 UTC](https://discourse.nodered.org/t/nrgpio-python-command-not-running-error/83388 "2023-12-21T17:04:13Z")

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Hi! After not being able to solve this issue with a lot of Google, I decided to ask for help here. But first things first, the system: Rpi 2B Latest Raspberry OS Lite (installed today) did a full apt-get update && apt…

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## [Subtract two separate message values](https://discourse.nodered.org/t/subtract-two-separate-message-values/83930)

<div class="topic-metadata">

**Author:** [@bceyresy](https://discourse.nodered.org/u/bceyresy)\
**Replies:** 6\
**Last updated:** [21 December 2023 16:11 UTC](https://discourse.nodered.org/t/subtract-two-separate-message-values/83930 "2023-12-21T16:11:56Z")

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I have 2 Sources of MQTT data coming in, i need a function that deducts them from each other. The issue is there is a slight delay between messages coming in, so i dont get the output.

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## [Convert True False to 1 / 0](https://discourse.nodered.org/t/convert-true-false-to-1-0/83886)

<div class="topic-metadata">

**Author:** [@bceyresy](https://discourse.nodered.org/u/bceyresy)\
**Replies:** 4\
**Last updated:** [21 December 2023 15:32 UTC](https://discourse.nodered.org/t/convert-true-false-to-1-0/83886 "2023-12-21T15:32:08Z")

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Hi, I just need a simple way to convert a true or false to 1 or 0 from a payload message . Any help would be much appreciated :pray:

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## [Even if the node is already downloaded, it will not be displayed in the palette](https://discourse.nodered.org/t/even-if-the-node-is-already-downloaded-it-will-not-be-displayed-in-the-palette/83919)

<div class="topic-metadata">

**Author:** [@Node7189](https://discourse.nodered.org/u/Node7189)\
**Replies:** 1\
**Last updated:** [21 December 2023 14:05 UTC](https://discourse.nodered.org/t/even-if-the-node-is-already-downloaded-it-will-not-be-displayed-in-the-palette/83919 "2023-12-21T14:05:56Z")

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A long time ago, when I uninstalled a certain node, I directly deleted the node's folder. I then re-downloaded it, but it doesn't show up in the palette. The log says the download was successful. When I check the re-do…

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## [About reading files using node-red-contrib-sftpco](https://discourse.nodered.org/t/about-reading-files-using-node-red-contrib-sftpco/83915)

<div class="topic-metadata">

**Author:** [@Node7189](https://discourse.nodered.org/u/Node7189)\
**Replies:** 5\
**Last updated:** [21 December 2023 13:52 UTC](https://discourse.nodered.org/t/about-reading-files-using-node-red-contrib-sftpco/83915 "2023-12-21T13:52:49Z")

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About node-red-contrib-sftpco When reading a file using the Get method It will be read as UTF-8. Is there no way to change the character code? Also, enter the host, username and password on this node. Is it possible…

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## [How to add new flows to a running Node-RED instance with the admin API](https://discourse.nodered.org/t/how-to-add-new-flows-to-a-running-node-red-instance-with-the-admin-api/83858)

<div class="topic-metadata">

**Author:** [@markoz](https://discourse.nodered.org/u/markoz)\
**Replies:** 4\
**Last updated:** [21 December 2023 11:38 UTC](https://discourse.nodered.org/t/how-to-add-new-flows-to-a-running-node-red-instance-with-the-admin-api/83858 "2023-12-21T11:38:26Z")

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I'm trying to use the Admin API to add flows to a running Node-RED instance. The flow files are downloaded/exported with the build in Node-RED editor. I've tried using the POST /flows and it works adding the first flow,…

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## [Flow studio with logo](https://discourse.nodered.org/t/flow-studio-with-logo/83901)

<div class="topic-metadata">

**Author:** [@Shah](https://discourse.nodered.org/u/Shah)\
**Replies:** 1\
**Last updated:** [21 December 2023 06:51 UTC](https://discourse.nodered.org/t/flow-studio-with-logo/83901 "2023-12-21T06:51:07Z")

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Hi team, I would like to request you confirm below possibility. Flow studio with customize logo. Flow studio with customize colors. If possible, Please share me related article. Thank you.

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## [Node-red-node-markdown to match editor version?](https://discourse.nodered.org/t/node-red-node-markdown-to-match-editor-version/83896)

<div class="topic-metadata">

**Author:** [@lgrkvst](https://discourse.nodered.org/u/lgrkvst)\
**Replies:** 1\
**Last updated:** [21 December 2023 06:39 UTC](https://discourse.nodered.org/t/node-red-node-markdown-to-match-editor-version/83896 "2023-12-21T06:39:49Z")

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I just noticed that node-red-node-markdown isn't using the same version as the editor when generating html. I'm trying to generate checkboxes using: - \[x\] Checked - \[ \] Unchecked ...which in the editor yields: Ch…

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## [Dashboard on ESP32-3 possible?](https://discourse.nodered.org/t/dashboard-on-esp32-3-possible/83890)

<div class="topic-metadata">

**Author:** [@Maximus1](https://discourse.nodered.org/u/Maximus1)\
**Replies:** 3\
**Last updated:** [20 December 2023 22:11 UTC](https://discourse.nodered.org/t/dashboard-on-esp32-3-possible/83890 "2023-12-20T22:11:03Z")

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hi is it possible to display the dashboard on an ESP32-S3 with touch-display?

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## [Achieving Debug Window Unity Utopia?](https://discourse.nodered.org/t/achieving-debug-window-unity-utopia/83870)

<div class="topic-metadata">

**Author:** [@hazymat](https://discourse.nodered.org/u/hazymat)\
**Replies:** 6\
**Last updated:** [20 December 2023 21:54 UTC](https://discourse.nodered.org/t/achieving-debug-window-unity-utopia/83870 "2023-12-20T21:54:03Z")

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I don't know about others, but I am always setting up debug nodes to see if I can catch some message here or there. Sometimes I'll nip off to make coffee and my laptop will go to sleep, then I'm annoyed that I've missed…

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## [Node-RED in docker but using Host Networking Mode](https://discourse.nodered.org/t/node-red-in-docker-but-using-host-networking-mode/83889)

<div class="topic-metadata">

**Author:** [@HeneryH](https://discourse.nodered.org/u/HeneryH)\
**Replies:** 5\
**Last updated:** [20 December 2023 21:38 UTC](https://discourse.nodered.org/t/node-red-in-docker-but-using-host-networking-mode/83889 "2023-12-20T21:38:10Z")

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I have previous attempts of Home Assistant where HA would NOT detect various IoT devices that broadcast their availability. The problem in that scenario was that docker does not pass the IoT broadcast messages on throug…

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## [NodeRed OpcUa PLC - READ MULTIPLE Can't split after OpcUaClient](https://discourse.nodered.org/t/nodered-opcua-plc-read-multiple-cant-split-after-opcuaclient/83869)

<div class="topic-metadata">

**Author:** [@Sunraku](https://discourse.nodered.org/u/Sunraku)\
**Replies:** 3\
**Last updated:** [20 December 2023 20:49 UTC](https://discourse.nodered.org/t/nodered-opcua-plc-read-multiple-cant-split-after-opcuaclient/83869 "2023-12-20T20:49:13Z")

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Hello As a lot of others topic, I hope I will get my answer here :slight\_smile: I would like to read data from a plc. I tried with the node 'Read' but it need an OpcUa-Client for each variable I want to read, and my pl…

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## [\[SOLVED\] NGROK: end of support for V2: how do you update to V3?](https://discourse.nodered.org/t/solved-ngrok-end-of-support-for-v2-how-do-you-update-to-v3/83815)

<div class="topic-metadata">

**Author:** [@SuperNinja](https://discourse.nodered.org/u/SuperNinja)\
**Replies:** 8\
**Last updated:** [20 December 2023 20:29 UTC](https://discourse.nodered.org/t/solved-ngrok-end-of-support-for-v2-how-do-you-update-to-v3/83815 "2023-12-20T20:29:57Z")

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To make NR and its dashboard accessible everywhere, a few years ago, I installed NGROK on my Raspberry pi. Not being very comfortable with LINUX (it still hasn't changed :sweat\_smile:), I followed this tutorial (without …

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## [Node-red-node-mongodb and wildcards](https://discourse.nodered.org/t/node-red-node-mongodb-and-wildcards/83876)

<div class="topic-metadata">

**Author:** [@chrisofCCL](https://discourse.nodered.org/u/chrisofCCL)\
**Replies:** 4\
**Last updated:** [20 December 2023 19:57 UTC](https://discourse.nodered.org/t/node-red-node-mongodb-and-wildcards/83876 "2023-12-20T19:57:37Z")

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First time on this forum for ages and i have a tricky MongoDB query. I'm using the node-red-node-mongodb nodes and I want to perform a query using wildcards. From the documentation, I have come up with the following as …

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## [Hardware compatibility](https://discourse.nodered.org/t/hardware-compatibility/83879)

<div class="topic-metadata">

**Author:** [@msuchta](https://discourse.nodered.org/u/msuchta)\
**Replies:** 5\
**Last updated:** [20 December 2023 17:08 UTC](https://discourse.nodered.org/t/hardware-compatibility/83879 "2023-12-20T17:08:44Z")

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Hi, I'm writing diploma project and i need some information about how many microcontrollers i can program with Node-RED. I know that i can use Raspberry Pi, Arduino boards, Beagle Bones, and what about other microcontrol…

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## [Unusual log startup following upgrade to 3.1.3/node20](https://discourse.nodered.org/t/unusual-log-startup-following-upgrade-to-3-1-3-node20/83868)

<div class="topic-metadata">

**Author:** [@cymplecy](https://discourse.nodered.org/u/cymplecy)\
**Replies:** 6\
**Last updated:** [20 December 2023 17:08 UTC](https://discourse.nodered.org/t/unusual-log-startup-following-upgrade-to-3-1-3-node20/83868 "2023-12-20T17:08:33Z")

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Just upgraded my main Pi NR instance to 3.1.3 and node 20 and noticed that I don't get the normal start-up info (Welcome to NR and port info stuff) pi@pi128gb:~/.node-red $ node-red 20 Dec 11:16:01 - \[warn\] Projects dis…

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## [Trying to read load of hx711 on raspberry pi](https://discourse.nodered.org/t/trying-to-read-load-of-hx711-on-raspberry-pi/83836)

<div class="topic-metadata">

**Author:** [@mebner98](https://discourse.nodered.org/u/mebner98)\
**Replies:** 5\
**Last updated:** [20 December 2023 16:56 UTC](https://discourse.nodered.org/t/trying-to-read-load-of-hx711-on-raspberry-pi/83836 "2023-12-20T16:56:38Z")

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Hello, i am pretty new in the node red topic and currently trying to get the weight of my hx711 load sensor in node-red but i am not able to do it. I saw that there is the palette node-red-contrib-hx711 which looked easy…

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## [Filter node is not working as (I) expected](https://discourse.nodered.org/t/filter-node-is-not-working-as-i-expected/83859)

<div class="topic-metadata">

**Author:** [@realtebo](https://discourse.nodered.org/u/realtebo)\
**Replies:** 6\
**Last updated:** [20 December 2023 14:16 UTC](https://discourse.nodered.org/t/filter-node-is-not-working-as-i-expected/83859 "2023-12-20T14:16:28Z")

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I've a filter node, set up as is Very often, more than once daily, this node is re-emitting the same identical value from the same topic. I'm not using a big number of topics here, \< 30. What should I do to diagnose…

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## [Ps-strategy-lowest-price](https://discourse.nodered.org/t/ps-strategy-lowest-price/83590)

<div class="topic-metadata">

**Author:** [@Shwowak](https://discourse.nodered.org/u/Shwowak)\
**Replies:** 6\
**Last updated:** [20 December 2023 11:53 UTC](https://discourse.nodered.org/t/ps-strategy-lowest-price/83590 "2023-12-20T11:53:21Z")

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ich möchte den preis ändern per dropdown menü in der config des ps-strategy-lowest-price bekomme es nicht hin \[ { "id": "6b85ac2a45f5b274", "type": "ps-strategy-lowest-price", "z": "256762ae5…

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## [Function node sends multiple messages instead of one](https://discourse.nodered.org/t/function-node-sends-multiple-messages-instead-of-one/83843)

<div class="topic-metadata">

**Author:** [@ChrisG](https://discourse.nodered.org/u/ChrisG)\
**Replies:** 10\
**Last updated:** [20 December 2023 10:26 UTC](https://discourse.nodered.org/t/function-node-sends-multiple-messages-instead-of-one/83843 "2023-12-20T10:26:10Z")

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Hi, Node-Red v3.1.0 I have a simple 'edit function node' which collects values from global variables and formats a message with those values. I want this function to run once a minute so have put a 'inject node' in fr…

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## [Control Led Bar](https://discourse.nodered.org/t/control-led-bar/83849)

<div class="topic-metadata">

**Author:** [@wiwan-wijoyo](https://discourse.nodered.org/u/wiwan-wijoyo)\
**Replies:** 4\
**Last updated:** [20 December 2023 09:12 UTC](https://discourse.nodered.org/t/control-led-bar/83849 "2023-12-20T09:12:01Z")

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I have android wall with LED Bar, I already to control LED Bar from cmd (adb shell)and working well. android wall IP : 192.168.16.129 port adb : 55555 Connect android wall send command “adb connect 192.168.16.129:555…

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## [I want to pass a message to the outside using REST](https://discourse.nodered.org/t/i-want-to-pass-a-message-to-the-outside-using-rest/83852)

<div class="topic-metadata">

**Author:** [@takoyaki1211](https://discourse.nodered.org/u/takoyaki1211)\
**Replies:** 1\
**Last updated:** [20 December 2023 08:29 UTC](https://discourse.nodered.org/t/i-want-to-pass-a-message-to-the-outside-using-rest/83852 "2023-12-20T08:29:15Z")

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I want to pass messages externally using REST. I tried the code below. When I checked the execution results in the browser, only the Label item had disappeared. I would like to know the solution. \[ { "id":…

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## [Change colour of button](https://discourse.nodered.org/t/change-colour-of-button/83842)

<div class="topic-metadata">

**Author:** [@Sirhc](https://discourse.nodered.org/u/Sirhc)\
**Replies:** 6\
**Last updated:** [20 December 2023 08:18 UTC](https://discourse.nodered.org/t/change-colour-of-button/83842 "2023-12-20T08:18:15Z")

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Hello I have the following function which is supposed to set a msg.colour payload to a specific colour for a button that the function feeds in the flow. \` var switch\_colour = ""; var secondpayload = ""; var thirdpayl…

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## [Assistance Needed with Integrating Rasa Chatbot, Node-RED, and SQLite](https://discourse.nodered.org/t/assistance-needed-with-integrating-rasa-chatbot-node-red-and-sqlite/83738)

<div class="topic-metadata">

**Author:** [@Heezed](https://discourse.nodered.org/u/Heezed)\
**Replies:** 2\
**Last updated:** [20 December 2023 08:17 UTC](https://discourse.nodered.org/t/assistance-needed-with-integrating-rasa-chatbot-node-red-and-sqlite/83738 "2023-12-20T08:17:15Z")

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Hello Node-RED Community, I am currently working on a project that involves integrating a Rasa Chatbot with Node-RED for executing SQLite database queries. As I'm quite new to this, I've encountered some challenges and …

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