# Latest

**URL:** https://discourse.nodered.org/latest.md?no_subcategories=false&page=290

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

**Page:** 291

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## [Beginner: String(INT) global variable convert to number?](https://discourse.nodered.org/t/beginner-string-int-global-variable-convert-to-number/81959)

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**Author:** [@r4sby](https://discourse.nodered.org/u/r4sby)\
**Replies:** 2\
**Last updated:** [12 October 2023 10:24 UTC](https://discourse.nodered.org/t/beginner-string-int-global-variable-convert-to-number/81959 "2023-10-12T10:24:46Z")

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Hi! First time trying Node-Red with the Weidmuller program. I have a temperature sensor and I'm trying to get this to convert to $number but I don't understand at all how to go further. Checked forums, youtube etc. My…

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## [error: 'Subscription Object Is Malformed'](https://discourse.nodered.org/t/error-subscription-object-is-malformed/81939)

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**Author:** [@Parabellum123](https://discourse.nodered.org/u/Parabellum123)\
**Replies:** 3\
**Last updated:** [12 October 2023 09:54 UTC](https://discourse.nodered.org/t/error-subscription-object-is-malformed/81939 "2023-10-12T09:54:22Z")

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## [Can we limit number of input wires connecting to a specific node?](https://discourse.nodered.org/t/can-we-limit-number-of-input-wires-connecting-to-a-specific-node/81961)

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**Author:** [@zubong](https://discourse.nodered.org/u/zubong)\
**Replies:** 4\
**Last updated:** [12 October 2023 09:40 UTC](https://discourse.nodered.org/t/can-we-limit-number-of-input-wires-connecting-to-a-specific-node/81961 "2023-10-12T09:40:51Z")

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I have a operation node which takes 2 operands so I want to limit the number of input wires connecting the operation node.! Is there any way to do that.?

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## [Problem with computer startup and sounds not being heard](https://discourse.nodered.org/t/problem-with-computer-startup-and-sounds-not-being-heard/81252)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 33\
**Last updated:** [12 October 2023 09:06 UTC](https://discourse.nodered.org/t/problem-with-computer-startup-and-sounds-not-being-heard/81252 "2023-10-12T09:06:54Z")

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With all the other questions I'm asking, I've just noticed a possible problem with inject nodes and inject on strat up. I have an inject node set to inject on startup to simply say "Hello there" for me. Yes, it uses WA…

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## [Dropbox Uncaught Exception](https://discourse.nodered.org/t/dropbox-uncaught-exception/81960)

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**Author:** [@Josov](https://discourse.nodered.org/u/Josov)\
**Replies:** 0\
**Last updated:** [12 October 2023 08:29 UTC](https://discourse.nodered.org/t/dropbox-uncaught-exception/81960 "2023-10-12T08:29:50Z")

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Since about a week Node-RED keeps on restarting due an uncaught exception in node-red-node-dropbox, before there were no issues. I created a new access code and a new refresh token but it does not help. Currently 4 Raspb…

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## [Interactive offline map with svg editor](https://discourse.nodered.org/t/interactive-offline-map-with-svg-editor/81911)

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**Author:** [@Stropwafle](https://discourse.nodered.org/u/Stropwafle)\
**Replies:** 2\
**Last updated:** [12 October 2023 07:48 UTC](https://discourse.nodered.org/t/interactive-offline-map-with-svg-editor/81911 "2023-10-12T07:48:09Z")

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Hi I'm doing a project and the program I'm writing needs to have an interactive interface with a map. Now I can't use the worldmap node because I need it to work offline. So what my idea was is to use the svg editor node…

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## [Control Tasmota devices via OXRS touch-panel](https://discourse.nodered.org/t/control-tasmota-devices-via-oxrs-touch-panel/81770)

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**Author:** [@Sean-McG](https://discourse.nodered.org/u/Sean-McG)\
**Replies:** 1\
**Last updated:** [12 October 2023 03:10 UTC](https://discourse.nodered.org/t/control-tasmota-devices-via-oxrs-touch-panel/81770 "2023-10-12T03:10:22Z")

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This is a sample flow to to control Tasmota devices via the OXRS touch-panel. It works by mapping the OXRS screen and tile payloads to specific Tasmota device topics, and vice versa. This allows the touch screen to cont…

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## [NODE "client machine](https://discourse.nodered.org/t/node-client-machine/81955)

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**Author:** [@imperium85](https://discourse.nodered.org/u/imperium85)\
**Replies:** 2\
**Last updated:** [12 October 2023 02:41 UTC](https://discourse.nodered.org/t/node-client-machine/81955 "2023-10-12T02:41:59Z")

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Hi There Im new with NODE RED, but managed to put toghether a basic dashboard that uses Raspberry PI's GPIO port for in/out ports. It might be a dump question but I just can't get my head around it. So I would have a m…

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## [How to set up SvelteKit?](https://discourse.nodered.org/t/how-to-set-up-sveltekit/81925)

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**Author:** [@neves-io](https://discourse.nodered.org/u/neves-io)\
**Replies:** 3\
**Last updated:** [11 October 2023 19:31 UTC](https://discourse.nodered.org/t/how-to-set-up-sveltekit/81925 "2023-10-11T19:31:47Z")

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Firstly - thanks so much for a wonderful node-RED plugin. I got the example Svelte project up and running no problem. We will need SvelteKit in our case - what is the best method to get this up and running in UI builde…

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## [Problem receiving RF data on serial port](https://discourse.nodered.org/t/problem-receiving-rf-data-on-serial-port/81811)

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**Author:** [@Paul-Reed](https://discourse.nodered.org/u/Paul-Reed)\
**Replies:** 14\
**Last updated:** [11 October 2023 18:58 UTC](https://discourse.nodered.org/t/problem-receiving-rf-data-on-serial-port/81811 "2023-10-11T18:58:27Z")

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I have a Raspberry Pi v3b fitted with a RF Hat, to receive data from remote sensors which I then process in node-RED -\> Influx. This has worked reliably for several years, but for some reason a few weeks ago, in the mid…

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## [How to rate a node-red-contrib](https://discourse.nodered.org/t/how-to-rate-a-node-red-contrib/81945)

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**Author:** [@RobSmyth](https://discourse.nodered.org/u/RobSmyth)\
**Replies:** 2\
**Last updated:** [11 October 2023 18:30 UTC](https://discourse.nodered.org/t/how-to-rate-a-node-red-contrib/81945 "2023-10-11T18:30:22Z")

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I want to rate a node I downloaded an use. How do I do this? I do not see an option. Apologies if this is an existing thread and/or obvious. Rob

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## [Philips Hue Tap Dial Node-Red](https://discourse.nodered.org/t/philips-hue-tap-dial-node-red/81894)

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**Author:** [@kievitje](https://discourse.nodered.org/u/kievitje)\
**Replies:** 1\
**Last updated:** [10 October 2023 06:22 UTC](https://discourse.nodered.org/t/philips-hue-tap-dial-node-red/81894 "2023-10-10T06:22:26Z")

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G'day all, I'm relatively new to programming with node-red and am learning a lot on here. I'm having trouble making my tap dial work with node-red. The 4 buttons are working, what I'd like to do is make the dimmer fun…

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## [Gestion T°,HR et pression atmosphérique avec mesure de debit d'eau et T° d'eau avec un PI](https://discourse.nodered.org/t/gestion-t-hr-et-pression-atmospherique-avec-mesure-de-debit-deau-et-t-deau-avec-un-pi/81731)

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**Author:** [@Lovely](https://discourse.nodered.org/u/Lovely)\
**Replies:** 7\
**Last updated:** [11 October 2023 13:24 UTC](https://discourse.nodered.org/t/gestion-t-hr-et-pression-atmospherique-avec-mesure-de-debit-deau-et-t-deau-avec-un-pi/81731 "2023-10-11T13:24:54Z")

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Bonjour a toutes et a tous, Tous, nouvel inscrit depuis quelques jours, je me présente : Tous jeune dans ce milieu ,j'ai d'abord commence a connaitre l'univers du PI qui ma fort intéressé par les possibilités offertes …

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## [Dashboard 2.0 - Where we are, and what’s next?](https://discourse.nodered.org/t/dashboard-2-0-where-we-are-and-what-s-next/81929)

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**Author:** [@iskerrett](https://discourse.nodered.org/u/iskerrett)\
**Replies:** 19\
**Last updated:** [11 October 2023 10:22 UTC](https://discourse.nodered.org/t/dashboard-2-0-where-we-are-and-what-s-next/81929 "2023-10-11T10:22:33Z")

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The Dashboard 2.0 project is the next generation of the very popular Node-RED Dashboard nodes. This new project is making great progress towards feature parity plus adding new UI widgets. FlowFuse is the main sponsor of…

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## [Uncaught Exception | When the global variables are not defined, but used in a node](https://discourse.nodered.org/t/uncaught-exception-when-the-global-variables-are-not-defined-but-used-in-a-node/81632)

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**Author:** [@mayurkhadse](https://discourse.nodered.org/u/mayurkhadse)\
**Replies:** 5\
**Last updated:** [11 October 2023 10:03 UTC](https://discourse.nodered.org/t/uncaught-exception-when-the-global-variables-are-not-defined-but-used-in-a-node/81632 "2023-10-11T10:03:33Z")

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There comes an exception if the global variables are not defined and we try to launch the Node red and in a node the global variables are being read. 28 Sep 12:53:23 - \[error\] TypeError: Cannot read properties of undefi…

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## [V3.1.0 touching .config.nodes.json](https://discourse.nodered.org/t/v3-1-0-touching-config-nodes-json/81942)

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**Author:** [@Colin](https://discourse.nodered.org/u/Colin)\
**Replies:** 2\
**Last updated:** [11 October 2023 09:45 UTC](https://discourse.nodered.org/t/v3-1-0-touching-config-nodes-json/81942 "2023-10-11T09:45:44Z")

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It seems that node red 3.1.0 touches .config.nodes.json (so changes its timestamp) at each node red restart. This causes my backup strategy to keep backing it up. I believe that this is a change with 3.1.0. If so, was…

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## [Http request throws error after nodejs update](https://discourse.nodered.org/t/http-request-throws-error-after-nodejs-update/81880)

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**Author:** [@pebl-hank](https://discourse.nodered.org/u/pebl-hank)\
**Replies:** 11\
**Last updated:** [11 October 2023 07:49 UTC](https://discourse.nodered.org/t/http-request-throws-error-after-nodejs-update/81880 "2023-10-11T07:49:21Z")

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Hey there, I updated from nodejs 14 to 18 and re-installed node red. Now, when I use the original example at https://cookbook.nodered.org/http/simple-get-request I get \[error\] \[http request:874a3d4e.9b666\] RequestEr…

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## [Create flows.json programmatically?](https://discourse.nodered.org/t/create-flows-json-programmatically/81934)

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**Author:** [@Dunken](https://discourse.nodered.org/u/Dunken)\
**Replies:** 6\
**Last updated:** [11 October 2023 07:30 UTC](https://discourse.nodered.org/t/create-flows-json-programmatically/81934 "2023-10-11T07:30:03Z")

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Let's assume I have 10 flows (in 10 tabs). I would like to programmatically create a new flows.json file for a subset of the flows, in order to run them in a second Node-RED instance. What's the recommended way how to do…

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## [How to resend modbus tcp if read is diffrend from send message](https://discourse.nodered.org/t/how-to-resend-modbus-tcp-if-read-is-diffrend-from-send-message/81932)

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**Author:** [@mrDal666](https://discourse.nodered.org/u/mrDal666)\
**Replies:** 0\
**Last updated:** [10 October 2023 18:18 UTC](https://discourse.nodered.org/t/how-to-resend-modbus-tcp-if-read-is-diffrend-from-send-message/81932 "2023-10-10T18:18:09Z")

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Hi can some one help me with my code? i have problems sending to my plc. some times i get a message overload on my plc. what am i doing wrong? how do i add a resend message if read is diffrend from send message. this…

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## [Move Node to other flow](https://discourse.nodered.org/t/move-node-to-other-flow/81903)

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**Author:** [@Graefe](https://discourse.nodered.org/u/Graefe)\
**Replies:** 6\
**Last updated:** [10 October 2023 19:30 UTC](https://discourse.nodered.org/t/move-node-to-other-flow/81903 "2023-10-10T19:30:43Z")

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How can I move a node to an other flow? I think in former versions you could drag an drop to a flow tab. In 3.1 it does not work like that.

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## [How can I combine humidty and temp from Tellstick Duo MQTT before sending, when it is there?](https://discourse.nodered.org/t/how-can-i-combine-humidty-and-temp-from-tellstick-duo-mqtt-before-sending-when-it-is-there/81930)

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**Author:** [@Mastiff](https://discourse.nodered.org/u/Mastiff)\
**Replies:** 2\
**Last updated:** [10 October 2023 19:11 UTC](https://discourse.nodered.org/t/how-can-i-combine-humidty-and-temp-from-tellstick-duo-mqtt-before-sending-when-it-is-there/81930 "2023-10-10T19:11:56Z")

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I have finally found something that works for me so that I can use the Tellstick Duos that I have around my house and cabin (I bought a bunch of them cheap when they were going out of style, so quite some years ago). Thi…

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## [World Map storing tag location and Geo fences and recall them on map load](https://discourse.nodered.org/t/world-map-storing-tag-location-and-geo-fences-and-recall-them-on-map-load/81906)

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**Author:** [@88bit](https://discourse.nodered.org/u/88bit)\
**Replies:** 2\
**Last updated:** [10 October 2023 16:20 UTC](https://discourse.nodered.org/t/world-map-storing-tag-location-and-geo-fences-and-recall-them-on-map-load/81906 "2023-10-10T16:20:11Z")

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Hi, I'm working on a mapping project showing sensor data on a map. The data is received via MQTT and works very nicely on dynamic input. Now I'm looking to make the last values persistent on the map. I estimate I will h…

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## [Jsonata in global environment variables with reference](https://discourse.nodered.org/t/jsonata-in-global-environment-variables-with-reference/81927)

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**Author:** [@IotDeveloper](https://discourse.nodered.org/u/IotDeveloper)\
**Replies:** 1\
**Last updated:** [10 October 2023 15:52 UTC](https://discourse.nodered.org/t/jsonata-in-global-environment-variables-with-reference/81927 "2023-10-10T15:52:25Z")

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Hello, i want to use jsonata expression within the released function "Global Environment Variables". The jsonata contains a logical function, which checks if a environmental variable exists. If not, it sets a default v…

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## [Newbie Node-red help creating a flow to turn off Lightwave wall socket (wattage)](https://discourse.nodered.org/t/newbie-node-red-help-creating-a-flow-to-turn-off-lightwave-wall-socket-wattage/81914)

<div class="topic-metadata">

**Author:** [@NRnovice](https://discourse.nodered.org/u/NRnovice)\
**Replies:** 3\
**Last updated:** [10 October 2023 15:48 UTC](https://discourse.nodered.org/t/newbie-node-red-help-creating-a-flow-to-turn-off-lightwave-wall-socket-wattage/81914 "2023-10-10T15:48:24Z")

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Good Afternoon all, I'm new to using Node Red and require some help setting up a flow. I've searched online but unable to find what I'm looking for. My System: Home Assistance yellow V2023.10.1, OS V10.5 Node red V3.…

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## [FlowCompare - visually compare local flow with flow deployed on server](https://discourse.nodered.org/t/flowcompare-visually-compare-local-flow-with-flow-deployed-on-server/81922)

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**Author:** [@gregorius](https://discourse.nodered.org/u/gregorius)\
**Replies:** 0\
**Last updated:** [10 October 2023 14:48 UTC](https://discourse.nodered.org/t/flowcompare-visually-compare-local-flow-with-flow-deployed-on-server/81922 "2023-10-10T14:48:11Z")

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Hi There! A perhaps slightly imperfect node but a demonstration of how a visual comparison of flows might work - FlowCompare node - as the readme does not work @ flows.nodered.org, the npmjs package displays the documen…

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## [How can I pass python script file and input image folder path as params using postman?](https://discourse.nodered.org/t/how-can-i-pass-python-script-file-and-input-image-folder-path-as-params-using-postman/81830)

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**Author:** [@Ram1](https://discourse.nodered.org/u/Ram1)\
**Replies:** 17\
**Last updated:** [10 October 2023 12:27 UTC](https://discourse.nodered.org/t/how-can-i-pass-python-script-file-and-input-image-folder-path-as-params-using-postman/81830 "2023-10-10T12:27:51Z")

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How can I pass python script file and input image folder path as params using postman body? and get from exec node as msg.payload and run the script file?

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## [Possible bug Joining environment variables in typedInput](https://discourse.nodered.org/t/possible-bug-joining-environment-variables-in-typedinput/81908)

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**Author:** [@jnn](https://discourse.nodered.org/u/jnn)\
**Replies:** 4\
**Last updated:** [10 October 2023 12:08 UTC](https://discourse.nodered.org/t/possible-bug-joining-environment-variables-in-typedinput/81908 "2023-10-10T12:08:02Z")

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I thought it was possible to joining env vars in subflows but I am doing something wrong here. I have checked out this thread: https://discourse.nodered.org/t/using-subflow-environment-variable-to-set-mqtt-topic/15331/8 …

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## [Utiliser les datetime avec mariadb](https://discourse.nodered.org/t/utiliser-les-datetime-avec-mariadb/81915)

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**Author:** [@mfrederic](https://discourse.nodered.org/u/mfrederic)\
**Replies:** 0\
**Last updated:** [10 October 2023 11:49 UTC](https://discourse.nodered.org/t/utiliser-les-datetime-avec-mariadb/81915 "2023-10-10T11:49:13Z")

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bonjour, je récupère une date d'un compteur d'énergie. Je souhaiterais intégrer cette date dans Mariadb mais je me perds avec les différents formats. merci d'avance

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## [Shelly bluetooth low energy sensores to MQTT](https://discourse.nodered.org/t/shelly-bluetooth-low-energy-sensores-to-mqtt/81892)

<div class="topic-metadata">

**Author:** [@juntiedt](https://discourse.nodered.org/u/juntiedt)\
**Replies:** 2\
**Last updated:** [10 October 2023 08:23 UTC](https://discourse.nodered.org/t/shelly-bluetooth-low-energy-sensores-to-mqtt/81892 "2023-10-10T08:23:30Z")

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shelly has released some very nice bluetooth low energy sensors which work together with gen 2 shellies. In order to use these ble devices you have to run a script on the shelly 2 device, which can for example drive the…

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## [Need to expose the api](https://discourse.nodered.org/t/need-to-expose-the-api/81904)

<div class="topic-metadata">

**Author:** [@Ram1](https://discourse.nodered.org/u/Ram1)\
**Replies:** 3\
**Last updated:** [10 October 2023 08:10 UTC](https://discourse.nodered.org/t/need-to-expose-the-api/81904 "2023-10-10T08:10:39Z")

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want to pass the python file path and input image folder path as params in postman. I need to get the params in node red and run the py file and expose the api to get the data with status code of 200.

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