# Latest

**URL:** https://discourse.nodered.org/latest.md?page=1053

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

**Page:** 1054

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## [Data from JS function](https://discourse.nodered.org/t/data-from-js-function/28738)

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**Author:** [@grant1](https://discourse.nodered.org/u/grant1)\
**Replies:** 2\
**Last updated:** [2 July 2020 22:30 UTC](https://discourse.nodered.org/t/data-from-js-function/28738 "2020-07-02T22:30:26Z")

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We have an industrial compressor in our plant that has a LAN port. I plugged it in and can view the operating data on a simple webpage via our local network. I inspected the page and found it uses JS functions. I am i…

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## [Multiple WorldMap Nodes in Dashboard](https://discourse.nodered.org/t/multiple-worldmap-nodes-in-dashboard/29410)

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**Author:** [@baqwas](https://discourse.nodered.org/u/baqwas)\
**Replies:** 0\
**Last updated:** [2 July 2020 21:23 UTC](https://discourse.nodered.org/t/multiple-worldmap-nodes-in-dashboard/29410 "2020-07-02T21:23:44Z")

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Hello! I've read an old response (I think) on multiple worldmap nodes at https://discourse.nodered.org/t/node-red-worldmap-connecting-multiple-worldmaps/3859 I also noticed in the documentation at https://flows.nodered…

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## [Problems with several nodes of MODBUS-TCP comunicating with a slave](https://discourse.nodered.org/t/problems-with-several-nodes-of-modbus-tcp-comunicating-with-a-slave/29401)

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**Author:** [@e-Duardo](https://discourse.nodered.org/u/e-Duardo)\
**Replies:** 0\
**Last updated:** [2 July 2020 19:10 UTC](https://discourse.nodered.org/t/problems-with-several-nodes-of-modbus-tcp-comunicating-with-a-slave/29401 "2020-07-02T19:10:48Z")

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Hi! I am interacting with an "Arduino-based PLC" (If it can be called "PLC") with Node-RED via MODBUS-TCP (I installed node-red-contrib-modbusTCP). I am using in the same flow one node that writes both Coils and Holdi…

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## [Time format for time picker](https://discourse.nodered.org/t/time-format-for-time-picker/29396)

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**Author:** [@jgerardi](https://discourse.nodered.org/u/jgerardi)\
**Replies:** 1\
**Last updated:** [2 July 2020 17:24 UTC](https://discourse.nodered.org/t/time-format-for-time-picker/29396 "2020-07-02T17:24:45Z")

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I want to make a time picker in a text input and then send it on to my tasmota's. I want to set up my dashboard as in the picuure below. Once i enter a time i want to be able pass it on to an mqtt message. what i have…

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## [Dashboard Chart - Clear Manually With No Limit on Stored Points](https://discourse.nodered.org/t/dashboard-chart-clear-manually-with-no-limit-on-stored-points/28762)

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**Author:** [@setheroo](https://discourse.nodered.org/u/setheroo)\
**Replies:** 9\
**Last updated:** [2 July 2020 16:08 UTC](https://discourse.nodered.org/t/dashboard-chart-clear-manually-with-no-limit-on-stored-points/28762 "2020-07-02T16:08:49Z")

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Firstly, appreciate any and all help - first time to post here - I have a Chart Node that is ingesting data every ~10 seconds from an MQTT Source. The Chart Node itself is set to reset daily using the 1 Day setting and h…

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## [How do I send several simple messages in one function node?](https://discourse.nodered.org/t/how-do-i-send-several-simple-messages-in-one-function-node/29385)

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**Author:** [@Mastiff](https://discourse.nodered.org/u/Mastiff)\
**Replies:** 2\
**Last updated:** [2 July 2020 15:18 UTC](https://discourse.nodered.org/t/how-do-i-send-several-simple-messages-in-one-function-node/29385 "2020-07-02T15:18:24Z")

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I want to have different nodes to run different groups of RollerTrols with the RFXtrx. I am looking for something like this: var msg1 = { topic: "BLINDS\_T0/0x3939/4", payload:"Open" }; var msg2 = { topic: "BLINDS\_T0/0…

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## [Z-wave - Multisensor - Nodered](https://discourse.nodered.org/t/z-wave-multisensor-nodered/1952)

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**Author:** [@florent](https://discourse.nodered.org/u/florent)\
**Replies:** 1\
**Last updated:** [2 July 2020 14:42 UTC](https://discourse.nodered.org/t/z-wave-multisensor-nodered/1952 "2020-07-02T14:42:44Z")

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Hi, I need some help. I have my usb key Z-wave installed on my raspberry pi 3 and I can comunicate with it on the node-red plateforme. (I can see my too modules zwave-in and zwave-out in my dashboard). I try to connec…

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## [Zwave,raspberry pi](https://discourse.nodered.org/t/zwave-raspberry-pi/28980)

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**Author:** [@Ghada-Ch](https://discourse.nodered.org/u/Ghada-Ch)\
**Replies:** 3\
**Last updated:** [2 July 2020 14:07 UTC](https://discourse.nodered.org/t/zwave-raspberry-pi/28980 "2020-07-02T14:07:46Z")

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I am using \[Aeon Labs Z-Stick-S2 Z-Wave USB Controller\] in raspberry pi 1 I want to control zwave devices with node red I used the node zwave-in but I got this problem node: symbol lookup error: /home/pi/.node-red/nod…

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## [How to write and configure custom authentication](https://discourse.nodered.org/t/how-to-write-and-configure-custom-authentication/29381)

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**Author:** [@GowriAradhya](https://discourse.nodered.org/u/GowriAradhya)\
**Replies:** 1\
**Last updated:** [2 July 2020 13:42 UTC](https://discourse.nodered.org/t/how-to-write-and-configure-custom-authentication/29381 "2020-07-02T13:42:10Z")

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Hello, I am trying to implement new authentication service for Node-red .Is it possible to provide any example of how to write and configure custom authentication.

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## [TLS/SSL encrypt for MQTT](https://discourse.nodered.org/t/tls-ssl-encrypt-for-mqtt/29035)

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**Author:** [@Martin10](https://discourse.nodered.org/u/Martin10)\
**Replies:** 37\
**Last updated:** [2 July 2020 13:19 UTC](https://discourse.nodered.org/t/tls-ssl-encrypt-for-mqtt/29035 "2020-07-02T13:19:10Z")

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Is this the right way to encrypt the mqqt node via TLS/SSL? https://groups.google.com/forum/#!topic/node-red/vu0Hrc2VPLk

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## [How to get msg.payload in JSON string](https://discourse.nodered.org/t/how-to-get-msg-payload-in-json-string/29373)

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**Author:** [@erikthegamer1242](https://discourse.nodered.org/u/erikthegamer1242)\
**Replies:** 7\
**Last updated:** [2 July 2020 13:13 UTC](https://discourse.nodered.org/t/how-to-get-msg-payload-in-json-string/29373 "2020-07-02T13:13:10Z")

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Hello, I have no idea how to setup this so I will give you following info an then ask the question: My flow: \[{"id":"a5e85d1d.fd0e4","type":"tab","label":"Flow 4","disabled":false,"info":""},{"id":"436a058b.7c8ecc","ty…

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## [How function mqtt in Node-Red?](https://discourse.nodered.org/t/how-function-mqtt-in-node-red/29065)

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**Author:** [@get-command](https://discourse.nodered.org/u/get-command)\
**Replies:** 12\
**Last updated:** [2 July 2020 13:07 UTC](https://discourse.nodered.org/t/how-function-mqtt-in-node-red/29065 "2020-07-02T13:07:52Z")

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Hi all, i need your help again :slight\_smile: I use different Gateways e.g Sonoff Rf433-to-mqtt or zigbee2mqtt stick. This function very well. But I don't know , how function mqtt... How can i get a list off my mqtt…

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## [Uibuilder with Menu](https://discourse.nodered.org/t/uibuilder-with-menu/15281)

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**Author:** [@johnlongo](https://discourse.nodered.org/u/johnlongo)\
**Replies:** 29\
**Last updated:** [2 July 2020 11:38 UTC](https://discourse.nodered.org/t/uibuilder-with-menu/15281 "2020-07-02T11:38:15Z")

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Does anyone have a good way to menu a menu (in the html) using UI builder?

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## [Enabling Projects feature - missing git](https://discourse.nodered.org/t/enabling-projects-feature-missing-git/29317)

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**Author:** [@enrique](https://discourse.nodered.org/u/enrique)\
**Replies:** 14\
**Last updated:** [2 July 2020 12:39 UTC](https://discourse.nodered.org/t/enabling-projects-feature-missing-git/29317 "2020-07-02T12:39:01Z")

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Hi! I am starting with node-red and notice a detail following a course. In Settings, the option to connect to GitHub does not appear. I did the installation complete, and I did not encounter installation errors. Wher…

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## [Cannot read property '0' of undefined](https://discourse.nodered.org/t/cannot-read-property-0-of-undefined/29371)

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**Author:** [@Henjoe](https://discourse.nodered.org/u/Henjoe)\
**Replies:** 4\
**Last updated:** [2 July 2020 11:45 UTC](https://discourse.nodered.org/t/cannot-read-property-0-of-undefined/29371 "2020-07-02T11:45:33Z")

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Dear nodered Experts, I have this simple function that gets the value of msg.payload and loop through that value to get specific data, how ever I am having an error of "Cannot read property '0' of undefined. I don't kn…

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## [API OAuth 1.0 using http request node](https://discourse.nodered.org/t/api-oauth-1-0-using-http-request-node/29365)

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**Author:** [@Ireadcode](https://discourse.nodered.org/u/Ireadcode)\
**Replies:** 1\
**Last updated:** [2 July 2020 10:40 UTC](https://discourse.nodered.org/t/api-oauth-1-0-using-http-request-node/29365 "2020-07-02T10:40:17Z")

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Hello everyone. I am new here, so I may have some stupid questions. I have an API from woocommerce. Since the website is using https , the basic auth from the node(http request) is not working. This is the error: {“cod…

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## [SQLite parameterized syntax for 'WHERE IN ("a", "b", "c")'?](https://discourse.nodered.org/t/sqlite-parameterized-syntax-for-where-in-a-b-c/29349)

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**Author:** [@shimbone](https://discourse.nodered.org/u/shimbone)\
**Replies:** 1\
**Last updated:** [2 July 2020 10:34 UTC](https://discourse.nodered.org/t/sqlite-parameterized-syntax-for-where-in-a-b-c/29349 "2020-07-02T10:34:22Z")

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SELECT \* FROM table WHERE field IN ($values) Does anyone know how a SQLite prepared statement is expecting one to format the $values parameter here? I've tried setting msg.params.$values to these strings: "a", "b" '…

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## ["Http In"-Subflow OR "Url must be unique?"](https://discourse.nodered.org/t/http-in-subflow-or-url-must-be-unique/29357)

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**Author:** [@Toastgeraet](https://discourse.nodered.org/u/Toastgeraet)\
**Replies:** 5\
**Last updated:** [2 July 2020 10:14 UTC](https://discourse.nodered.org/t/http-in-subflow-or-url-must-be-unique/29357 "2020-07-02T10:14:51Z")

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Hello, It seems to me, that the url parameter for HttpIn Nodes must be unique, for only the first instance created will be triggered by a request. So if i have multiple HttpIn Nodes using the same route, only one gets …

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## [Why the difference between manual node install and palette install](https://discourse.nodered.org/t/why-the-difference-between-manual-node-install-and-palette-install/29364)

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**Author:** [@cymplecy](https://discourse.nodered.org/u/cymplecy)\
**Replies:** 3\
**Last updated:** [2 July 2020 10:08 UTC](https://discourse.nodered.org/t/why-the-difference-between-manual-node-install-and-palette-install/29364 "2020-07-02T10:08:16Z")

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Something I've wondered for a while In (all?) contrib node notes - they say install using npm install node-red-contrib-xxx but the log from a node install via palette says npm install--no-audit --no-update-notifier -…

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## [Automatic restart of workflows](https://discourse.nodered.org/t/automatic-restart-of-workflows/29362)

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**Author:** [@mhechthz](https://discourse.nodered.org/u/mhechthz)\
**Replies:** 0\
**Last updated:** [2 July 2020 09:22 UTC](https://discourse.nodered.org/t/automatic-restart-of-workflows/29362 "2020-07-02T09:22:57Z")

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Hi, there is a thread How to restart flows automatically? that is not really finished or solved. I implemented the last example, but get error 400, so automatic restart of flow doesn't work. Is there any fool proof des…

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## [Watch Directory, stock](https://discourse.nodered.org/t/watch-directory-stock/29355)

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**Author:** [@Henke82](https://discourse.nodered.org/u/Henke82)\
**Replies:** 2\
**Last updated:** [2 July 2020 09:09 UTC](https://discourse.nodered.org/t/watch-directory-stock/29355 "2020-07-02T09:09:57Z")

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Hi! I've been trying to setup a simple flow with the built in Watch-node, but I am not really sure what the expected directory input should be. The purpose is to watch a certain directory for new folders (located on the …

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## [Opc ua certificate](https://discourse.nodered.org/t/opc-ua-certificate/29361)

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**Author:** [@betternoel](https://discourse.nodered.org/u/betternoel)\
**Replies:** 0\
**Last updated:** [2 July 2020 09:07 UTC](https://discourse.nodered.org/t/opc-ua-certificate/29361 "2020-07-02T09:07:39Z")

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can anyone help me with this opc ua certificate issue. this is the first time i encountered "certificate" rather than casual user login.

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## [How to not have to manually refresh a dashboard ui on startup](https://discourse.nodered.org/t/how-to-not-have-to-manually-refresh-a-dashboard-ui-on-startup/29233)

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**Author:** [@Zoomer](https://discourse.nodered.org/u/Zoomer)\
**Replies:** 35\
**Last updated:** [2 July 2020 08:28 UTC](https://discourse.nodered.org/t/how-to-not-have-to-manually-refresh-a-dashboard-ui-on-startup/29233 "2020-07-02T08:28:18Z")

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Hello, I am very new to node red and the linux operating system (3 weeks).I am using a raspberry pi 3 and I have been trying to make a temperature gauge with node red which hooks up to a small 5 inch tft screen. The ide…

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## [Tsl2561 luminosity node](https://discourse.nodered.org/t/tsl2561-luminosity-node/29350)

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**Author:** [@rmystique](https://discourse.nodered.org/u/rmystique)\
**Replies:** 3\
**Last updated:** [2 July 2020 08:23 UTC](https://discourse.nodered.org/t/tsl2561-luminosity-node/29350 "2020-07-02T08:23:19Z")

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I can't get the node ( node-red-contrib-tsl2561) for this to install, it has lots of errors, Im trying to use the lux sensor and get a value returned, maybe another way to do it?

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## [Updating a Node-RED flow from the file system](https://discourse.nodered.org/t/updating-a-node-red-flow-from-the-file-system/29205)

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**Author:** [@vp2021](https://discourse.nodered.org/u/vp2021)\
**Replies:** 7\
**Last updated:** [2 July 2020 07:28 UTC](https://discourse.nodered.org/t/updating-a-node-red-flow-from-the-file-system/29205 "2020-07-02T07:28:20Z")

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Hello, I would like to know if it is possible to update and deploy a node-RED "flow" just by modifying files. Let me explain: If for example I have 10 machines with Node-RED, I would like to be able to update their flo…

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## [How to extract data from a file of type .ods](https://discourse.nodered.org/t/how-to-extract-data-from-a-file-of-type-ods/29300)

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**Author:** [@eddy23](https://discourse.nodered.org/u/eddy23)\
**Replies:** 15\
**Last updated:** [2 July 2020 05:58 UTC](https://discourse.nodered.org/t/how-to-extract-data-from-a-file-of-type-ods/29300 "2020-07-02T05:58:52Z")

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I want to extract one the content of cell A1 from a .ods file. This value is being updated every 5s. I am able to extract the value from the cell from the last saved version of the file. However, when the value is updat…

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## [Title placement by UI template](https://discourse.nodered.org/t/title-placement-by-ui-template/29276)

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**Author:** [@Joaovitor](https://discourse.nodered.org/u/Joaovitor)\
**Replies:** 4\
**Last updated:** [2 July 2020 01:41 UTC](https://discourse.nodered.org/t/title-placement-by-ui-template/29276 "2020-07-02T01:41:42Z")

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Well, I developed an application on the node-RED dasboard. I used dashboard nodes to build the graphs. Well, in my case I left the menu table hidden, which prevents me from entering a title through the dashboard setti…

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## [How to use machine learning model made in python for prediction in node red in IBM Cloud](https://discourse.nodered.org/t/how-to-use-machine-learning-model-made-in-python-for-prediction-in-node-red-in-ibm-cloud/29344)

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**Author:** [@deekshaha](https://discourse.nodered.org/u/deekshaha)\
**Replies:** 1\
**Last updated:** [1 July 2020 23:29 UTC](https://discourse.nodered.org/t/how-to-use-machine-learning-model-made-in-python-for-prediction-in-node-red-in-ibm-cloud/29344 "2020-07-01T23:29:42Z")

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Hi, I want to deploy my machine learning model made using python in jupyter notebook, I have saved model using python pickle, and final model is saved as model.pkl Now, I want to use this model in nodeRed which is hoste…

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## [Have writing to a usb to RS-485 adapter working but how do I read back the response?](https://discourse.nodered.org/t/have-writing-to-a-usb-to-rs-485-adapter-working-but-how-do-i-read-back-the-response/29319)

<div class="topic-metadata">

**Author:** [@jeffreys](https://discourse.nodered.org/u/jeffreys)\
**Replies:** 13\
**Last updated:** [1 July 2020 22:21 UTC](https://discourse.nodered.org/t/have-writing-to-a-usb-to-rs-485-adapter-working-but-how-do-i-read-back-the-response/29319 "2020-07-01T22:21:23Z")

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In Labview, Im used to basically drawing a line from the write to the input node of the USB read. There is not an input node on the USB read to control the flow. How do you read the response from the packet I sent? Here…

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## [Setting initial dropdown value for dynamic dropdown?](https://discourse.nodered.org/t/setting-initial-dropdown-value-for-dynamic-dropdown/29331)

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**Author:** [@neile](https://discourse.nodered.org/u/neile)\
**Replies:** 4\
**Last updated:** [1 July 2020 19:24 UTC](https://discourse.nodered.org/t/setting-initial-dropdown-value-for-dynamic-dropdown/29331 "2020-07-01T19:24:32Z")

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I'm creating a custom node that reads a list of effect values values dynamically from a remote server and populates a dropdown for its edit page. I've got the dropdown populating just fine, and the resulting selected eff…

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