# Latest

**URL:** https://discourse.nodered.org/latest.md?page=926

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

**Page:** 927

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## [Extract a variable of a Json](https://discourse.nodered.org/t/extract-a-variable-of-a-json/37660)

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**Author:** [@Roger](https://discourse.nodered.org/u/Roger)\
**Replies:** 17\
**Last updated:** [24 December 2020 10:23 UTC](https://discourse.nodered.org/t/extract-a-variable-of-a-json/37660 "2020-12-24T10:23:45Z")

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Hello, I have a JSON with diferent variables in my node-red and I need to extract one of this variables at other node-red, somebody know how I can do it? I attach the picture of the variables, I need to extract in\_temp. …

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## [Limit a signal or payload?](https://discourse.nodered.org/t/limit-a-signal-or-payload/37911)

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**Author:** [@Steinspiel](https://discourse.nodered.org/u/Steinspiel)\
**Replies:** 8\
**Last updated:** [24 December 2020 10:23 UTC](https://discourse.nodered.org/t/limit-a-signal-or-payload/37911 "2020-12-24T10:23:37Z")

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Hello, Does anyone know a solution for my problem: An "mqtt-in" sends a String: "ON" every 8 seconds. This activates an "openHAB\_Switch\_Item". If the transmission is interrupted by "mqtt-in" for more than 20 seconds, a…

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## [Request dark theme for editing screen](https://discourse.nodered.org/t/request-dark-theme-for-editing-screen/37963)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 5\
**Last updated:** [24 December 2020 10:10 UTC](https://discourse.nodered.org/t/request-dark-theme-for-editing-screen/37963 "2020-12-24T10:10:18Z")

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I see it has been mentioned but I am not sure where in the scheme it is. I know the dashboard has a light and dark theme selectable. But the edit screen doesn't. Yes, I have installed the third party one and it works,…

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## [Help with error detection creation](https://discourse.nodered.org/t/help-with-error-detection-creation/37950)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 4\
**Last updated:** [24 December 2020 10:01 UTC](https://discourse.nodered.org/t/help-with-error-detection-creation/37950 "2020-12-24T10:01:37Z")

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I have a subflow and in there is this bit of code: if (ICDID != device) { node.warn("Node Configuration not set"); node.error("Node Configuration not set", msg) // fa-eye-slash return; } Which is nice …

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## [Starting supercollider synthesizer before starting node-red](https://discourse.nodered.org/t/starting-supercollider-synthesizer-before-starting-node-red/37922)

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**Author:** [@johncohn](https://discourse.nodered.org/u/johncohn)\
**Replies:** 3\
**Last updated:** [24 December 2020 09:40 UTC](https://discourse.nodered.org/t/starting-supercollider-synthesizer-before-starting-node-red/37922 "2020-12-24T09:40:56Z")

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Friends, Hoping somebody has an idea for me here. I'm using node-red on a raspi 4 for a fun musical project (a 10 m long touch Musical keyboard). Im using very nice extension node-red-contrib-music Which is perfect f…

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## [Losing configuration nodes from within subflow](https://discourse.nodered.org/t/losing-configuration-nodes-from-within-subflow/37635)

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**Author:** [@dathor](https://discourse.nodered.org/u/dathor)\
**Replies:** 4\
**Last updated:** [24 December 2020 09:17 UTC](https://discourse.nodered.org/t/losing-configuration-nodes-from-within-subflow/37635 "2020-12-24T09:17:50Z")

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Hello I develop my project on my windows laptop with (at the moment) node-red rev 1.1.2 (for no particular reason i just don't update that often). I also deploy/copy this project to other windows machines and this proc…

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## [Invalid endpoint error while usingnode-red-contrib-opcua on IBM Cloud](https://discourse.nodered.org/t/invalid-endpoint-error-while-usingnode-red-contrib-opcua-on-ibm-cloud/37960)

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**Author:** [@murari678](https://discourse.nodered.org/u/murari678)\
**Replies:** 0\
**Last updated:** [24 December 2020 08:57 UTC](https://discourse.nodered.org/t/invalid-endpoint-error-while-usingnode-red-contrib-opcua-on-ibm-cloud/37960 "2020-12-24T08:57:08Z")

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Hi mates, I am trying to connect Kepware opc server installed on my local windows pc to Node-red hosted on IBM cloud. i am using node-red-contrib-opcua to collect data from Kepware and facing below error. Is this a cert…

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## [Double api connection Node-red](https://discourse.nodered.org/t/double-api-connection-node-red/37959)

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**Author:** [@bce](https://discourse.nodered.org/u/bce)\
**Replies:** 0\
**Last updated:** [24 December 2020 08:44 UTC](https://discourse.nodered.org/t/double-api-connection-node-red/37959 "2020-12-24T08:44:10Z")

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Nora node-red had a disconnect and in the log I suddenly had a double api connection. deleted everything in node red, google home and revoked the token. all steps were reset, yet the message duplicate API connection pe…

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## [\[wiot:connectionPool:getClient\] \[DeviceClient:publish\] Client is not connected](https://discourse.nodered.org/t/wiotgetclient-deviceclient-publish-client-is-not-connected/18812)

<div class="topic-metadata">

**Author:** [@sandeepanj](https://discourse.nodered.org/u/sandeepanj)\
**Replies:** 2\
**Last updated:** [24 December 2020 05:53 UTC](https://discourse.nodered.org/t/wiotgetclient-deviceclient-publish-client-is-not-connected/18812 "2020-12-24T05:53:30Z")

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OPCUA CLIENT NODE TO IBM BLUEMIX. EROOR :heart\_eyes: 5 Dec 11:38:16 - \[info\] \[OpcUa-Client:27205b2d.dfc934\] No certificate used. \[BaseClient:connect\] Connecting to IoTF with host : ssl://za027j.messaging.internetofth…

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## [Connecting to a Telnet Server & Displaying the Contents](https://discourse.nodered.org/t/connecting-to-a-telnet-server-displaying-the-contents/37895)

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**Author:** [@aa0z](https://discourse.nodered.org/u/aa0z)\
**Replies:** 13\
**Last updated:** [24 December 2020 03:36 UTC](https://discourse.nodered.org/t/connecting-to-a-telnet-server-displaying-the-contents/37895 "2020-12-24T03:36:04Z")

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I'm having some telnet connection issues and need some help. There are telnet servers that you can connect to that display ham radio stations that are on the amateur radio air waves. It sends a string (usually login:) …

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## [Bufferparser with U64 Modbus](https://discourse.nodered.org/t/bufferparser-with-u64-modbus/37071)

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**Author:** [@Becker](https://discourse.nodered.org/u/Becker)\
**Replies:** 89\
**Last updated:** [23 December 2020 22:52 UTC](https://discourse.nodered.org/t/bufferparser-with-u64-modbus/37071 "2020-12-23T22:52:09Z")

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Hi, I tried to query a U64 Modbus value for the first time. But no matter how I configure the buffer parser, there is always only one error. What am I missing?

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## [Playing sound after something](https://discourse.nodered.org/t/playing-sound-after-something/37949)

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**Author:** [@nsacras](https://discourse.nodered.org/u/nsacras)\
**Replies:** 0\
**Last updated:** [23 December 2020 22:15 UTC](https://discourse.nodered.org/t/playing-sound-after-something/37949 "2020-12-23T22:15:17Z")

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Dear all, I'm starting on node-red. I have home assistant installed on a raspberry 4 running last system. I have some sonnoff zigbee sensors working well and I would like to play some sound when I open my door (it has…

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## [Looking for: Finite State Machine (FSM) library to manage multiple devices](https://discourse.nodered.org/t/looking-for-finite-state-machine-fsm-library-to-manage-multiple-devices/37940)

<div class="topic-metadata">

**Author:** [@RGNagel](https://discourse.nodered.org/u/RGNagel)\
**Replies:** 4\
**Last updated:** [23 December 2020 21:33 UTC](https://discourse.nodered.org/t/looking-for-finite-state-machine-fsm-library-to-manage-multiple-devices/37940 "2020-12-23T21:33:39Z")

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Hi, I have multiple devices that can connect via MQTT into my node-red application. Every device has a unique ID (let's name it devID). I need to keep a bunch of state information for every device separately, and the st…

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## [WiP: tasmota + node RED + blynk --- thermostat](https://discourse.nodered.org/t/wip-tasmota-node-red-blynk-thermostat/10114)

<div class="topic-metadata">

**Author:** [@hominidae](https://discourse.nodered.org/u/hominidae)\
**Replies:** 2\
**Last updated:** [23 December 2020 21:00 UTC](https://discourse.nodered.org/t/wip-tasmota-node-red-blynk-thermostat/10114 "2020-12-23T21:00:29Z")

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Hi folks, this is Work in Progress and not finished yet, but I'd like to share some of this in order for feedback and thoughts on how to improve. I am a beginner with node RED (and java script) so please be kind :sweat…

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## [In 1 node, read several information and make 1 message](https://discourse.nodered.org/t/in-1-node-read-several-information-and-make-1-message/37924)

<div class="topic-metadata">

**Author:** [@roro50](https://discourse.nodered.org/u/roro50)\
**Replies:** 27\
**Last updated:** [23 December 2020 21:18 UTC](https://discourse.nodered.org/t/in-1-node-read-several-information-and-make-1-message/37924 "2020-12-23T21:18:24Z")

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Hello, I turn to you again, because I have a difficulty: on the previous node I read the info from openweather, but I would like to summarize the info on a much shorter post. (and translate it into French that I am) I …

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## [Node red crashes after contrib-hue finished installing](https://discourse.nodered.org/t/node-red-crashes-after-contrib-hue-finished-installing/37936)

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**Author:** [@Nice\_to\_have](https://discourse.nodered.org/u/Nice_to_have)\
**Replies:** 2\
**Last updated:** [23 December 2020 18:26 UTC](https://discourse.nodered.org/t/node-red-crashes-after-contrib-hue-finished-installing/37936 "2020-12-23T18:26:52Z")

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Just my luck, I am using a raspberry 4 for a while now for home automation together with 4 other pi's. But now node red on the rpi4 crashed after I installed the contrib-hue. It crashed the moment node red palletmanag…

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## [Error while Installing NPM node-red-contrib-onvif-nodes](https://discourse.nodered.org/t/error-while-installing-npm-node-red-contrib-onvif-nodes/37773)

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**Author:** [@Napoleon](https://discourse.nodered.org/u/Napoleon)\
**Replies:** 14\
**Last updated:** [23 December 2020 18:02 UTC](https://discourse.nodered.org/t/error-while-installing-npm-node-red-contrib-onvif-nodes/37773 "2020-12-23T18:02:07Z")

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Hello, I am trying to install the node-red-contrib-onvif-nodes on my RaspberryMatic. Unfortunately I always get the following error: root@homematic-raspi:/usr/local/addons/redmatic# npm install node-red-contrib-on vi…

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## [Node-red-contrib-spotify auth problem](https://discourse.nodered.org/t/node-red-contrib-spotify-auth-problem/17958)

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**Author:** [@mouthpiec](https://discourse.nodered.org/u/mouthpiec)\
**Replies:** 1\
**Last updated:** [23 December 2020 17:06 UTC](https://discourse.nodered.org/t/node-red-contrib-spotify-auth-problem/17958 "2020-12-23T17:06:53Z")

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hi, I am running Node Red on Home Assistant running on a RPi3B through a docker. When I try to authenticate the keys using node red i am getting an error that page is not reachable. when using the config directly on h…

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## [New flow: input validation for InfluxDB](https://discourse.nodered.org/t/new-flow-input-validation-for-influxdb/37892)

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**Author:** [@TotallyInformation](https://discourse.nodered.org/u/TotallyInformation)\
**Replies:** 6\
**Last updated:** [23 December 2020 17:01 UTC](https://discourse.nodered.org/t/new-flow-input-validation-for-influxdb/37892 "2020-12-23T17:01:09Z")

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Hi all, another day, another - hopefully helpful - flow. InfluxDB: input validation function for influxdb-out (flow) - Node-RED This is a simple function node designed to validate data that you want to store in InfluxD…

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## [\[Announce\] node-red-contrib-facial-recognition](https://discourse.nodered.org/t/announce-node-red-contrib-facial-recognition/37384)

<div class="topic-metadata">

**Author:** [@meeki007](https://discourse.nodered.org/u/meeki007)\
**Replies:** 64\
**Last updated:** [23 December 2020 16:07 UTC](https://discourse.nodered.org/t/announce-node-red-contrib-facial-recognition/37384 "2020-12-23T16:07:34Z")

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Usage Takes a buffered image and runs TensorFlow Facial Detection and/or Facial Recognition to Detect: Faces in an image Facial landmarks Compute Face Descriptors Face Expressions Age & Gender Recognition Face R…

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## [Change Colour in Circle Pointer](https://discourse.nodered.org/t/change-colour-in-circle-pointer/37659)

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**Author:** [@Mario](https://discourse.nodered.org/u/Mario)\
**Replies:** 4\
**Last updated:** [23 December 2020 16:03 UTC](https://discourse.nodered.org/t/change-colour-in-circle-pointer/37659 "2020-12-23T16:03:48Z")

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Hi there, I have a circle pointer that I want to turn green for value 1 and red for value 2. My function is not really correct, but it shows what it is all about. What do I have to do to make it work?

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## [Bug dashboard and ui\_level](https://discourse.nodered.org/t/bug-dashboard-and-ui-level/37891)

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**Author:** [@Thierry1](https://discourse.nodered.org/u/Thierry1)\
**Replies:** 5\
**Last updated:** [23 December 2020 14:27 UTC](https://discourse.nodered.org/t/bug-dashboard-and-ui-level/37891 "2020-12-23T14:27:08Z")

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Hello, I'm new to Node RED and I have a small problem. With dashboard and ui\_level As long as I don't have a ui\_level object my interface works. If I add a ui\_level object, everything changes and I have more than the …

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## [How to use (client) mTLS in the http-request node?](https://discourse.nodered.org/t/how-to-use-client-mtls-in-the-http-request-node/37921)

<div class="topic-metadata">

**Author:** [@w4tsn](https://discourse.nodered.org/u/w4tsn)\
**Replies:** 0\
**Last updated:** [23 December 2020 12:47 UTC](https://discourse.nodered.org/t/how-to-use-client-mtls-in-the-http-request-node/37921 "2020-12-23T12:47:17Z")

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I have a server endpoint secured with an mTLS based authentication which I want to use for a GET request in the http-request node. I expected this to simply work by setting SSL/TLS configuration node with the crt, key an…

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## [\[SOLVED\]Trouble with storing and retrieving IP data](https://discourse.nodered.org/t/solved-trouble-with-storing-and-retrieving-ip-data/37897)

<div class="topic-metadata">

**Author:** [@JonHeron](https://discourse.nodered.org/u/JonHeron)\
**Replies:** 6\
**Last updated:** [23 December 2020 12:01 UTC](https://discourse.nodered.org/t/solved-trouble-with-storing-and-retrieving-ip-data/37897 "2020-12-23T12:01:21Z")

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Hello, I am trying to make a flow that will email me when my IP changes on a pi I have at another property. I am using the nodered-contrib-IP object. My default IP gets added to lastIp but it never gets updated via th…

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## [I have a question about payload](https://discourse.nodered.org/t/i-have-a-question-about-payload/37918)

<div class="topic-metadata">

**Author:** [@marconr9](https://discourse.nodered.org/u/marconr9)\
**Replies:** 2\
**Last updated:** [23 December 2020 13:00 UTC](https://discourse.nodered.org/t/i-have-a-question-about-payload/37918 "2020-12-23T13:00:14Z")

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Hi i'm new to node red and have maybe a stupid question. I want to integrate my dishwasher in my Domoticz system. Everything working fine but there is! one thing In my status window in Domoticz i see the complete v…

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## [Millheat API developing](https://discourse.nodered.org/t/millheat-api-developing/37919)

<div class="topic-metadata">

**Author:** [@farcry](https://discourse.nodered.org/u/farcry)\
**Replies:** 3\
**Last updated:** [23 December 2020 12:47 UTC](https://discourse.nodered.org/t/millheat-api-developing/37919 "2020-12-23T12:47:34Z")

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Hello. Is Node-red going to develope node for MillHeat like OpenHab (see link) Thanks. BR.

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## [Node-Red Testinstance for Homematic](https://discourse.nodered.org/t/node-red-testinstance-for-homematic/37884)

<div class="topic-metadata">

**Author:** [@oma](https://discourse.nodered.org/u/oma)\
**Replies:** 4\
**Last updated:** [23 December 2020 12:05 UTC](https://discourse.nodered.org/t/node-red-testinstance-for-homematic/37884 "2020-12-23T12:05:02Z")

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I am running Redmatic on my CCU3 without trouble. Now i would like to have a testbed seperate from "production" if you like. I did setup another instance of Nodered on a seperate (x86!) Server and left redmatic on the CC…

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## [Redmatic and external Node Red show different behaviour?](https://discourse.nodered.org/t/redmatic-and-external-node-red-show-different-behaviour/37917)

<div class="topic-metadata">

**Author:** [@oma](https://discourse.nodered.org/u/oma)\
**Replies:** 0\
**Last updated:** [23 December 2020 12:00 UTC](https://discourse.nodered.org/t/redmatic-and-external-node-red-show-different-behaviour/37917 "2020-12-23T12:00:53Z")

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I have two instances of Node Red: One on my CCU3 (Redmatic) one on a separate host. I was able to connect to the CCU from both instances but they don´t provide the same value?!? Via RPC Events i get the same message outp…

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## [Twinkly Lights Control - Brightness HTTP POST](https://discourse.nodered.org/t/twinkly-lights-control-brightness-http-post/37327)

<div class="topic-metadata">

**Author:** [@Brew](https://discourse.nodered.org/u/Brew)\
**Replies:** 18\
**Last updated:** [23 December 2020 11:20 UTC](https://discourse.nodered.org/t/twinkly-lights-control-brightness-http-post/37327 "2020-12-23T11:20:45Z")

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Hi there, it's that time of year and adventures in Christmas lights are a plenty, I've got some twinkly lights and having taken a bit from this guide I can turn them on and off. import xled control = xled.ControlInter…

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## [Can´t use Projects, Git isnt configured](https://discourse.nodered.org/t/can-t-use-projects-git-isnt-configured/37887)

<div class="topic-metadata">

**Author:** [@Stumpy](https://discourse.nodered.org/u/Stumpy)\
**Replies:** 3\
**Last updated:** [23 December 2020 09:59 UTC](https://discourse.nodered.org/t/can-t-use-projects-git-isnt-configured/37887 "2020-12-23T09:59:16Z")

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Hi i am using ioBroker with the Node-Red adapter on an ubuntu lxc. i wanted to use Projects, but i always get the message " Your Git-Client is not configured with an Username/Email". i have git installed and set up it…

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