# Latest

**URL:** https://discourse.nodered.org/latest.md?page=1044

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

**Page:** 1045

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## [Mqtt-\>opcua bridging](https://discourse.nodered.org/t/mqtt-opcua-bridging/17705)

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**Author:** [@fifthh](https://discourse.nodered.org/u/fifthh)\
**Replies:** 5\
**Last updated:** [12 July 2020 23:19 UTC](https://discourse.nodered.org/t/mqtt-opcua-bridging/17705 "2020-07-12T23:19:36Z")

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Hello. I'm trying to bridge mqtt to opc ua and i was wondering how the flow would look like with the " node-red-contrib-opcua" node. Currently i have setup the following: mqtt (client that connects to broker) -\>OpcUA …

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## [Node-red-contrib-iiot-opcua | empty field](https://discourse.nodered.org/t/node-red-contrib-iiot-opcua-empty-field/9949)

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**Author:** [@carlosglez](https://discourse.nodered.org/u/carlosglez)\
**Replies:** 9\
**Last updated:** [12 July 2020 22:58 UTC](https://discourse.nodered.org/t/node-red-contrib-iiot-opcua-empty-field/9949 "2020-07-12T22:58:05Z")

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Hello, I have an OPC UA server running and connected to UA Expert. I have tried to inject data from the general "inject node" to a "OPCUA-IIoT-Server-ASO" and after that to the OPC UA Server, everything is ok except the…

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## [Serving Network KML](https://discourse.nodered.org/t/serving-network-kml/29089)

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**Author:** [@dmac101](https://discourse.nodered.org/u/dmac101)\
**Replies:** 9\
**Last updated:** [12 July 2020 20:32 UTC](https://discourse.nodered.org/t/serving-network-kml/29089 "2020-07-12T20:32:06Z")

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Hi All, Just wondering if anyone has created a flow for serving KML data as a network link. I have have tried by modifying a basic web page example and replacing the html with KML code but it didn't work. I'm not sure i…

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## [Sound Sensors and Program needed](https://discourse.nodered.org/t/sound-sensors-and-program-needed/6303)

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**Author:** [@anonyy](https://discourse.nodered.org/u/anonyy)\
**Replies:** 10\
**Last updated:** [12 July 2020 19:56 UTC](https://discourse.nodered.org/t/sound-sensors-and-program-needed/6303 "2020-07-12T19:56:29Z")

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Hi Im doing a school project about a sound sensors which rings when it reaches the decibel programmed on it. And i want to attache a display board on it, when the bell rings i can see a message on a display board. Can an…

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## [Audio out not working,](https://discourse.nodered.org/t/audio-out-not-working/29960)

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**Author:** [@brockcraft](https://discourse.nodered.org/u/brockcraft)\
**Replies:** 0\
**Last updated:** [12 July 2020 19:49 UTC](https://discourse.nodered.org/t/audio-out-not-working/29960 "2020-07-12T19:49:12Z")

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Context: Sensetecnic FRED 1.8.1 (trial account) OS: MacOS Catalina 10.15.5 Browsers: Chrome (ver 83.0.4103.116), Safari (13.1.1) A couple of years ago I created a simple flow that injects a string to an audio out node…

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## [Rpm installer script degrades npm \[FIXED\]](https://discourse.nodered.org/t/rpm-installer-script-degrades-npm-fixed/29952)

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**Author:** [@Paul-Reed](https://discourse.nodered.org/u/Paul-Reed)\
**Replies:** 3\
**Last updated:** [12 July 2020 19:48 UTC](https://discourse.nodered.org/t/rpm-installer-script-degrades-npm-fixed/29952 "2020-07-12T19:48:55Z")

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I'm running node-RED in a Oracle Linux VM - Linux v4.14.35 which was installed using this node-RED script. I updated to NR v1.1.0 a few days ago using the script and wanted to start using the 'https certificate refresh'…

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## [Keypad code and questions with keypad hooked to pins](https://discourse.nodered.org/t/keypad-code-and-questions-with-keypad-hooked-to-pins/29930)

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**Author:** [@shel](https://discourse.nodered.org/u/shel)\
**Replies:** 8\
**Last updated:** [12 July 2020 16:36 UTC](https://discourse.nodered.org/t/keypad-code-and-questions-with-keypad-hooked-to-pins/29930 "2020-07-12T16:36:13Z")

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Would like to hook up a keypad to the Pi using the input pins and not USB or serial (which have examples in this forum). I have the keypad hooked up and can see the key presses but I am having the following issues. I do…

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## [Using npm in script file, installs seem to fail?](https://discourse.nodered.org/t/using-npm-in-script-file-installs-seem-to-fail/29876)

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**Author:** [@Nodi.Rubrum](https://discourse.nodered.org/u/Nodi.Rubrum)\
**Replies:** 12\
**Last updated:** [12 July 2020 16:06 UTC](https://discourse.nodered.org/t/using-npm-in-script-file-installs-seem-to-fail/29876 "2020-07-12T16:06:57Z")

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I have a new OS build of a Raspberry Pi, I install node red via the official installation script. No problems so far. I copy my flows.json file into the correct location ~/.node-red/ for example. All good so far. I t…

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## [Join (Joao) variable from node-red to tasker](https://discourse.nodered.org/t/join-joao-variable-from-node-red-to-tasker/29941)

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**Author:** [@MAaron](https://discourse.nodered.org/u/MAaron)\
**Replies:** 3\
**Last updated:** [12 July 2020 16:06 UTC](https://discourse.nodered.org/t/join-joao-variable-from-node-red-to-tasker/29941 "2020-07-12T16:06:13Z")

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Hi there! I would like to know, that if I have a global variable in my nodered (lets say its named TempValue), how can I send that Global value to my phone in tasker, and use that as a variable there? Namely, I would w…

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## [Default value in ui\_text label possible?](https://discourse.nodered.org/t/default-value-in-ui-text-label-possible/29928)

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**Author:** [@Nodi.Rubrum](https://discourse.nodered.org/u/Nodi.Rubrum)\
**Replies:** 2\
**Last updated:** [12 July 2020 15:55 UTC](https://discourse.nodered.org/t/default-value-in-ui-text-label-possible/29928 "2020-07-12T15:55:30Z")

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Is it possible to do something like this? Label -\> {{msg.topic}} || SomethingAsDefaultString Such that if {{msg.topic}} is empty, SomethingAsDefaultString populates the label? I guess I could always use a function to …

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## [After upgrate to v1.1.1; flows now not working "error: node not deployed"](https://discourse.nodered.org/t/after-upgrate-to-v1-1-1-flows-now-not-working-error-node-not-deployed/29834)

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**Author:** [@kenkoknz](https://discourse.nodered.org/u/kenkoknz)\
**Replies:** 9\
**Last updated:** [12 July 2020 15:00 UTC](https://discourse.nodered.org/t/after-upgrate-to-v1-1-1-flows-now-not-working-error-node-not-deployed/29834 "2020-07-12T15:00:19Z")

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Finally took the plunge and updated to v1.1.1 with excitement and trepidation (from 0.20 which was stable and was working flawlessly for ages). Ungraded using standard recommended script, all seems well with no errors.…

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## [Node-red-contrib-cache help](https://discourse.nodered.org/t/node-red-contrib-cache-help/29940)

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**Author:** [@martynwheeler](https://discourse.nodered.org/u/martynwheeler)\
**Replies:** 5\
**Last updated:** [12 July 2020 13:35 UTC](https://discourse.nodered.org/t/node-red-contrib-cache-help/29940 "2020-07-12T13:35:43Z")

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Hi, Is anyone using node-red-contrib-cache with uibuilder. It looks great but I am not sure whether I am doing things the best way. I have read through the section on the wiki and it says: "Simply send the control me…

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## [I am not able to upload data to Thingspeak](https://discourse.nodered.org/t/i-am-not-able-to-upload-data-to-thingspeak/29633)

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**Author:** [@pleasesolvemyproblem](https://discourse.nodered.org/u/pleasesolvemyproblem)\
**Replies:** 12\
**Last updated:** [12 July 2020 12:58 UTC](https://discourse.nodered.org/t/i-am-not-able-to-upload-data-to-thingspeak/29633 "2020-07-12T12:58:07Z")

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When i requested for data from Thingspeak using http, there was this error. Hence, i started everything again and upload data to Thingspeak to see what is the issue. i am not able to upload to thingspeak. Can anyone …

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## [Serial Port Node not outputting data](https://discourse.nodered.org/t/serial-port-node-not-outputting-data/29909)

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**Author:** [@Meptik](https://discourse.nodered.org/u/Meptik)\
**Replies:** 3\
**Last updated:** [12 July 2020 12:45 UTC](https://discourse.nodered.org/t/serial-port-node-not-outputting-data/29909 "2020-07-12T12:45:42Z")

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Hello! TLDR: The Serial node is connected, but not outputting any data. I've got NR V1.1.1 tuning on a Pi2, and a USB/Serial Barcode scanner plugged in. The USB-serial device is plugged in, connected, and showing data o…

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## [Https://flows.nodered.org/node/node-red-contrib-machine-learning](https://discourse.nodered.org/t/https-flows-nodered-org-node-node-red-contrib-machine-learning/29945)

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**Author:** [@BNMEZR](https://discourse.nodered.org/u/BNMEZR)\
**Replies:** 0\
**Last updated:** [12 July 2020 11:18 UTC](https://discourse.nodered.org/t/https-flows-nodered-org-node-node-red-contrib-machine-learning/29945 "2020-07-12T11:18:22Z")

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how to load json file in node-red-contrib-machine-learning ?

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## [Node-red-contrib-castv2 3.0 release](https://discourse.nodered.org/t/node-red-contrib-castv2-3-0-release/29929)

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**Author:** [@i8beef](https://discourse.nodered.org/u/i8beef)\
**Replies:** 2\
**Last updated:** [12 July 2020 08:22 UTC](https://discourse.nodered.org/t/node-red-contrib-castv2-3-0-release/29929 "2020-07-12T08:22:23Z")

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Note: This node has no relation to node-red-contrib-cast I released a 3.x version of the node-red-contrib-castv2 node this week, and figured I'd post this here for anyone with questions when they upgrade it and find the…

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## [Dashboard resets](https://discourse.nodered.org/t/dashboard-resets/29915)

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**Author:** [@dalla](https://discourse.nodered.org/u/dalla)\
**Replies:** 7\
**Last updated:** [12 July 2020 09:40 UTC](https://discourse.nodered.org/t/dashboard-resets/29915 "2020-07-12T09:40:52Z")

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I have a node red dashboard with a couple of Switches to enable and disable garden irrigation. By default these are disabled and I manually activate and set irrigation time context data values every time node red is star…

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## [Missing flows on node-red server](https://discourse.nodered.org/t/missing-flows-on-node-red-server/29846)

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**Author:** [@eddy23](https://discourse.nodered.org/u/eddy23)\
**Replies:** 17\
**Last updated:** [12 July 2020 08:40 UTC](https://discourse.nodered.org/t/missing-flows-on-node-red-server/29846 "2020-07-12T08:40:40Z")

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My node-red server was suddenly disconnected and when i restarted the node-red server, my flows are gone. I desperately need some guidance to retrieve whatever I have done on my node-red previously.

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## [Nodered and ewpe-smart-mqtt](https://discourse.nodered.org/t/nodered-and-ewpe-smart-mqtt/29828)

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**Author:** [@MAaron](https://discourse.nodered.org/u/MAaron)\
**Replies:** 20\
**Last updated:** [12 July 2020 08:39 UTC](https://discourse.nodered.org/t/nodered-and-ewpe-smart-mqtt/29828 "2020-07-12T08:39:36Z")

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Hi there! Very noob question, I'm trying to use my air conditioner with MQTT broker in nodered, but have no idea how to configure it to just send a setting. According to the readme, I need to address a topic, in mqtt…

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## [Mysql, mariadb INSERT fail - "msg.payload should be an object containing the query arguments."](https://discourse.nodered.org/t/mysql-mariadb-insert-fail-msg-payload-should-be-an-object-containing-the-query-arguments/29905)

<div class="topic-metadata">

**Author:** [@Adao\_Branco](https://discourse.nodered.org/u/Adao_Branco)\
**Replies:** 3\
**Last updated:** [12 July 2020 08:28 UTC](https://discourse.nodered.org/t/mysql-mariadb-insert-fail-msg-payload-should-be-an-object-containing-the-query-arguments/29905 "2020-07-12T08:28:14Z")

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I try insert data do mysql, but give this error : "msg.payload should be an object containing the query arguments." If I inject manual ; INSERT INTO consumo ( data, hora, voltagem, corrente, potencia, pf, kwh ) VALUES (…

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## [Worldmap ui not working](https://discourse.nodered.org/t/worldmap-ui-not-working/29904)

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**Author:** [@mshaz](https://discourse.nodered.org/u/mshaz)\
**Replies:** 9\
**Last updated:** [12 July 2020 07:44 UTC](https://discourse.nodered.org/t/worldmap-ui-not-working/29904 "2020-07-12T07:44:22Z")

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Hi I can't seem to toggle the ui\_worldmap on.By default after installation it is off. Can anyone help me?

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## [What does node red use for its scheduling on timing intervals?](https://discourse.nodered.org/t/what-does-node-red-use-for-its-scheduling-on-timing-intervals/29815)

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**Author:** [@Nodi.Rubrum](https://discourse.nodered.org/u/Nodi.Rubrum)\
**Replies:** 10\
**Last updated:** [12 July 2020 07:11 UTC](https://discourse.nodered.org/t/what-does-node-red-use-for-its-scheduling-on-timing-intervals/29815 "2020-07-12T07:11:39Z")

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What does node red use for its scheduling on timing intervals? Does it use cron or its own internal methodology? I have a flow that I would like to run as consistently as possible on multiple systems, such that it runs…

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## [Running node-RED as root](https://discourse.nodered.org/t/running-node-red-as-root/29889)

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**Author:** [@Rog\_Red](https://discourse.nodered.org/u/Rog_Red)\
**Replies:** 6\
**Last updated:** [12 July 2020 00:26 UTC](https://discourse.nodered.org/t/running-node-red-as-root/29889 "2020-07-12T00:26:25Z")

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Hi All, I want to run Node RED as root (only using this in my local network) on my raspberry pi so that I can use 'node-red-contrib-amazon-echo' so I need to allow access to port 80. If I 'sudo su node-red start', I ge…

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## [Setting up/Configuring Node Red to connect to Raspberry pi 4 via ethernet cable on a mac](https://discourse.nodered.org/t/setting-up-configuring-node-red-to-connect-to-raspberry-pi-4-via-ethernet-cable-on-a-mac/29912)

<div class="topic-metadata">

**Author:** [@Rey272](https://discourse.nodered.org/u/Rey272)\
**Replies:** 5\
**Last updated:** [11 July 2020 21:34 UTC](https://discourse.nodered.org/t/setting-up-configuring-node-red-to-connect-to-raspberry-pi-4-via-ethernet-cable-on-a-mac/29912 "2020-07-11T21:34:04Z")

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Hello, I am working on a school project in which I would like to use Node Red and its editor to configure operation of a tv settings which will be connected to a Raspberry pi 4 model. I recently downloaded and installed …

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## [WebSocket Node multiple clients](https://discourse.nodered.org/t/websocket-node-multiple-clients/29917)

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**Author:** [@wahibmichael](https://discourse.nodered.org/u/wahibmichael)\
**Replies:** 4\
**Last updated:** [12 July 2020 00:03 UTC](https://discourse.nodered.org/t/websocket-node-multiple-clients/29917 "2020-07-12T00:03:44Z")

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Hello, if 2 clients are connected to same webscoket node, is there a way send a message to specific client instead of broadcasting the message to all connected clients? in another way I have 2 or more clients connected…

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## [How do you do versioning on flows?](https://discourse.nodered.org/t/how-do-you-do-versioning-on-flows/29860)

<div class="topic-metadata">

**Author:** [@Nodi.Rubrum](https://discourse.nodered.org/u/Nodi.Rubrum)\
**Replies:** 3\
**Last updated:** [11 July 2020 23:44 UTC](https://discourse.nodered.org/t/how-do-you-do-versioning-on-flows/29860 "2020-07-11T23:44:52Z")

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How do you do versioning on or for flows? I change the name of the flow table, Flow 1.0, 1.1, 1.2, etc. Also add a comment node, with the name the same as the flow name as noted above. Is there some native method? So…

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## [OPC UA: I can't read variable assigned](https://discourse.nodered.org/t/opc-ua-i-cant-read-variable-assigned/29926)

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**Author:** [@abedgarr](https://discourse.nodered.org/u/abedgarr)\
**Replies:** 0\
**Last updated:** [11 July 2020 23:31 UTC](https://discourse.nodered.org/t/opc-ua-i-cant-read-variable-assigned/29926 "2020-07-11T23:31:50Z")

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\_I am doing an opc ua communication test for node red and matlab, I can read the assigned data with the predefined nodes of opc\_ua, but I cannot read them when I put the inject node. Can you help me please. \[{"id":"689…

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## [Time picker sets time in 1970](https://discourse.nodered.org/t/time-picker-sets-time-in-1970/29920)

<div class="topic-metadata">

**Author:** [@kubqo](https://discourse.nodered.org/u/kubqo)\
**Replies:** 2\
**Last updated:** [11 July 2020 21:49 UTC](https://discourse.nodered.org/t/time-picker-sets-time-in-1970/29920 "2020-07-11T21:49:20Z")

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Hi! I am trying to use time picker, but it gives me almost random values from 1970 -1972. When I use other time nodes such as simpletime or moments, it gives me right values. Even when I use dashboard calendar, it shov…

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## [Is there at way to send data from Sim800L to NodeRed?](https://discourse.nodered.org/t/is-there-at-way-to-send-data-from-sim800l-to-nodered/29907)

<div class="topic-metadata">

**Author:** [@netrux](https://discourse.nodered.org/u/netrux)\
**Replies:** 0\
**Last updated:** [11 July 2020 18:09 UTC](https://discourse.nodered.org/t/is-there-at-way-to-send-data-from-sim800l-to-nodered/29907 "2020-07-11T18:09:21Z")

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I want to send data through SIM800L using arduino, but I am not able to post HTTP request. Is there a way how we can replicate the request made in browser for arduino? I am trying AT+HTTPPARA="URL","http://user@MyIpAdd…

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## [Cannot get / (HA addon)](https://discourse.nodered.org/t/cannot-get-ha-addon/29897)

<div class="topic-metadata">

**Author:** [@Razio](https://discourse.nodered.org/u/Razio)\
**Replies:** 0\
**Last updated:** [11 July 2020 13:09 UTC](https://discourse.nodered.org/t/cannot-get-ha-addon/29897 "2020-07-11T13:09:50Z")

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Hi, I installed node-red as an addon in home assistant. I am using it as a dashboard (getting my info through mqtt(homey)) I noticed today that I could not reach node red anymore (via the HA panel). The dashboard itse…

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