# Latest

**URL:** https://discourse.nodered.org/latest.md?page=789

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

**Page:** 790

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## [Split array after link OUT / IN](https://discourse.nodered.org/t/split-array-after-link-out-in/47435)

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**Author:** [@jumpier](https://discourse.nodered.org/u/jumpier)\
**Replies:** 4\
**Last updated:** [21 June 2021 12:12 UTC](https://discourse.nodered.org/t/split-array-after-link-out-in/47435 "2021-06-21T12:12:05Z")

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Good Mornig, i've write a flow with 3 Modbus connection; each Modbus connection retrive an array data each of 95 elements. Then i've link out these 3 array to other flow. On flow "data", i've use link IN Now, how i ca…

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## [Countdown timer](https://discourse.nodered.org/t/countdown-timer/47434)

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**Author:** [@brian1](https://discourse.nodered.org/u/brian1)\
**Replies:** 2\
**Last updated:** [21 June 2021 12:11 UTC](https://discourse.nodered.org/t/countdown-timer/47434 "2021-06-21T12:11:05Z")

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Hi. This is my first post and don't know mouth about java scrips and need some( a lot) of help. Im urgently looking for a count down timer as the one we been using stopped working its about 10 yours old, so looking to …

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## [Deploying NodeRED project support](https://discourse.nodered.org/t/deploying-nodered-project-support/732)

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**Author:** [@Stwissel](https://discourse.nodered.org/u/Stwissel)\
**Replies:** 2\
**Last updated:** [21 June 2021 11:27 UTC](https://discourse.nodered.org/t/deploying-nodered-project-support/732 "2021-06-21T11:27:36Z")

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I’m wondering how to put the project feature to good use in a cloud environment (currently on Heroku). I can securely deploy ssh keys, so I wouldn’t need to use ssh-keygen. What I’d love to do: Use a sshkey I provided …

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## [Count the messages](https://discourse.nodered.org/t/count-the-messages/47412)

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**Author:** [@usmanEmder](https://discourse.nodered.org/u/usmanEmder)\
**Replies:** 12\
**Last updated:** [21 June 2021 10:58 UTC](https://discourse.nodered.org/t/count-the-messages/47412 "2021-06-21T10:58:48Z")

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Hello there, I need to count the messages (i.e. "0" or "1" but I need to consider only when msg.payload = 1), and when the message counter will equal to 16 then the system will automatically take other action. I had use…

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## [ESP32-CAM and Node RED](https://discourse.nodered.org/t/esp32-cam-and-node-red/18161)

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**Author:** [@lodv](https://discourse.nodered.org/u/lodv)\
**Replies:** 16\
**Last updated:** [21 June 2021 10:49 UTC](https://discourse.nodered.org/t/esp32-cam-and-node-red/18161 "2021-06-21T10:49:36Z")

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Hello, I like to stream a video to a template in Node RED. I know the IP address of my ESP32-CAM. When I type the IP address in the browser I can see the video stream. In Node Red I created a template with this code i…

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## [How do I know if data has been delivered when sending data with a nodered MQTT node?](https://discourse.nodered.org/t/how-do-i-know-if-data-has-been-delivered-when-sending-data-with-a-nodered-mqtt-node/47424)

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**Author:** [@Nathanli](https://discourse.nodered.org/u/Nathanli)\
**Replies:** 4\
**Last updated:** [21 June 2021 09:45 UTC](https://discourse.nodered.org/t/how-do-i-know-if-data-has-been-delivered-when-sending-data-with-a-nodered-mqtt-node/47424 "2021-06-21T09:45:07Z")

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The device is installed on board, there will be no network situation. So you need to realize that after the network reconnection, the data of the disconnection time period should also be sent out, I wonder if MQTT itself…

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## [Forward message after twice "false"](https://discourse.nodered.org/t/forward-message-after-twice-false/47402)

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**Author:** [@volker1078](https://discourse.nodered.org/u/volker1078)\
**Replies:** 2\
**Last updated:** [21 June 2021 09:26 UTC](https://discourse.nodered.org/t/forward-message-after-twice-false/47402 "2021-06-21T09:26:40Z")

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Hello, I have the "Adv Ping" node and then a function node with the following code: msg.tripTime = msg.payload; msg.payload = msg.payload! == false? "VServer running": "VServer cannot be reached"; return msg; This…

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## [Count day over xTemp | store it | Telegram it](https://discourse.nodered.org/t/count-day-over-xtemp-store-it-telegram-it/47403)

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**Author:** [@vikozo](https://discourse.nodered.org/u/vikozo)\
**Replies:** 3\
**Last updated:** [21 June 2021 07:58 UTC](https://discourse.nodered.org/t/count-day-over-xtemp-store-it-telegram-it/47403 "2021-06-21T07:58:59Z")

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Hello i would like to count days this happen. The Part to get the data und send a basic Telegram works, but i would like to have more, but don't know what path to go. This are two example. Tn20GT = Tropennacht = Tropi…

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## [Pool robot - Dolphin 300i](https://discourse.nodered.org/t/pool-robot-dolphin-300i/47422)

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**Author:** [@caveman](https://discourse.nodered.org/u/caveman)\
**Replies:** 0\
**Last updated:** [21 June 2021 07:39 UTC](https://discourse.nodered.org/t/pool-robot-dolphin-300i/47422 "2021-06-21T07:39:54Z")

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Hi all, did somebody integrate his pool robot in node red? it would be enough to get the cleaning status (to display in dashboard). My device is a Maytronics Dolphin 300i ( Dolphin S 300i Residential Pools Robotic Clea…

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## [From its-posible-open-a-program-from-node-red-in-windows/21734 \<with NSSMService\>](https://discourse.nodered.org/t/from-its-posible-open-a-program-from-node-red-in-windows-21734-with-nssmservice/47419)

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**Author:** [@hotkhwan](https://discourse.nodered.org/u/hotkhwan)\
**Replies:** 0\
**Last updated:** [21 June 2021 07:02 UTC](https://discourse.nodered.org/t/from-its-posible-open-a-program-from-node-red-in-windows-21734-with-nssmservice/47419 "2021-06-21T07:02:08Z")

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This good community I has same this case for NSSM service nodered on windows It run as system Share my solution: Use windows task scheduler for resolve it Example Code \[{"id":"37ec7f9a.24e02","type":"file","z":"d9b6…

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## [Project industry 4.0](https://discourse.nodered.org/t/project-industry-4-0/4508)

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**Author:** [@marioarmillei](https://discourse.nodered.org/u/marioarmillei)\
**Replies:** 7\
**Last updated:** [20 June 2021 22:59 UTC](https://discourse.nodered.org/t/project-industry-4-0/4508 "2021-06-20T22:59:45Z")

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has anyone related projects of indusra 4.0? machine talks about sql and production to machine reading data and statistics from sql?

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## [How to make my custom node disconnect cleanly](https://discourse.nodered.org/t/how-to-make-my-custom-node-disconnect-cleanly/47406)

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**Author:** [@mdkrieg](https://discourse.nodered.org/u/mdkrieg)\
**Replies:** 2\
**Last updated:** [20 June 2021 18:10 UTC](https://discourse.nodered.org/t/how-to-make-my-custom-node-disconnect-cleanly/47406 "2021-06-20T18:10:30Z")

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Hello, I'm working on a custom node that connects to an external websocket. My problem right now is that after I restart node-red the external API gives me a "connection limit exceeded" message. I think there's a few w…

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## [Node-RED changelog for builtin nodes?](https://discourse.nodered.org/t/node-red-changelog-for-builtin-nodes/47404)

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**Author:** [@hazymat](https://discourse.nodered.org/u/hazymat)\
**Replies:** 1\
**Last updated:** [20 June 2021 17:43 UTC](https://discourse.nodered.org/t/node-red-changelog-for-builtin-nodes/47404 "2021-06-20T17:43:38Z")

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Hi, Is there a changelog for built-in nodes? Basically I'm trying to trace when this option appeared, and I'd like to read more about it as I can't find anything online or in the node's documentation: I'm having pr…

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## [Node red Telegram function to get a Channel ID](https://discourse.nodered.org/t/node-red-telegram-function-to-get-a-channel-id/47400)

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**Author:** [@vikozo](https://discourse.nodered.org/u/vikozo)\
**Replies:** 1\
**Last updated:** [20 June 2021 16:00 UTC](https://discourse.nodered.org/t/node-red-telegram-function-to-get-a-channel-id/47400 "2021-06-20T16:00:59Z")

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hello is there a way with a Node Red Telegram Node to request a Channel ID, Channel not the bot id! have a nice day vinc

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## [Function: division by 0](https://discourse.nodered.org/t/function-division-by-0/47365)

<div class="topic-metadata">

**Author:** [@Crashy77](https://discourse.nodered.org/u/Crashy77)\
**Replies:** 30\
**Last updated:** [20 June 2021 14:42 UTC](https://discourse.nodered.org/t/function-division-by-0/47365 "2021-06-20T14:42:09Z")

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I´m pretty new in Node-Red, but all I´ve done till now is working fine. Sometimes it´s easy to understand how it´s working, but now I´m having a problem with division by 0. My solution is working, but it must give a be…

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## [Uibuilder: How to set the title property of an Apex chart?](https://discourse.nodered.org/t/uibuilder-how-to-set-the-title-property-of-an-apex-chart/47367)

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**Author:** [@CreativeWarlock](https://discourse.nodered.org/u/CreativeWarlock)\
**Replies:** 2\
**Last updated:** [20 June 2021 14:29 UTC](https://discourse.nodered.org/t/uibuilder-how-to-set-the-title-property-of-an-apex-chart/47367 "2021-06-20T14:29:57Z")

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Ahoi, with @TotallyInformation's uibuilder I'm happily displaying various charts on my dashboard. The updating works as well, but I never came around the problem of changing the title of an Apex chart that is configured…

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## [Turn payload numbers into integer](https://discourse.nodered.org/t/turn-payload-numbers-into-integer/47399)

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**Author:** [@RonMa](https://discourse.nodered.org/u/RonMa)\
**Replies:** 3\
**Last updated:** [20 June 2021 13:40 UTC](https://discourse.nodered.org/t/turn-payload-numbers-into-integer/47399 "2021-06-20T13:40:33Z")

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Hi everyone, I probably have a really simple request - here is the use case. I receive temperature values ​​from my sensors, which I can call up through Alexa when needed. The problem now is, that these values have two …

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## [Writing data to an external website](https://discourse.nodered.org/t/writing-data-to-an-external-website/47310)

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**Author:** [@Tanglefoot](https://discourse.nodered.org/u/Tanglefoot)\
**Replies:** 11\
**Last updated:** [20 June 2021 12:37 UTC](https://discourse.nodered.org/t/writing-data-to-an-external-website/47310 "2021-06-20T12:37:06Z")

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First I should say I'm a beginner and just finding my way around node-red I have written a flow which reads data (messages) from a udp port and after some filtering then displays them in a table on the UI dashboard - th…

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## [Write variables in MSSQL](https://discourse.nodered.org/t/write-variables-in-mssql/47372)

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**Author:** [@wagullo](https://discourse.nodered.org/u/wagullo)\
**Replies:** 4\
**Last updated:** [20 June 2021 12:34 UTC](https://discourse.nodered.org/t/write-variables-in-mssql/47372 "2021-06-20T12:34:52Z")

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Hi, I'm new to the forum and to this Node-red, I am creating a flow that writes me 2 variables (one from the PLC and another given in node red) in a MSSQL database. I have a problem when defining the given variable in n…

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## [How to test subflow-module in docker-compose instance](https://discourse.nodered.org/t/how-to-test-subflow-module-in-docker-compose-instance/47328)

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**Author:** [@novski](https://discourse.nodered.org/u/novski)\
**Replies:** 5\
**Last updated:** [20 June 2021 12:25 UTC](https://discourse.nodered.org/t/how-to-test-subflow-module-in-docker-compose-instance/47328 "2021-06-20T12:25:57Z")

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How can I install my local subflow-module inside my docker-compose instance of node-red?

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## [Finding devices connected t a router using node red](https://discourse.nodered.org/t/finding-devices-connected-t-a-router-using-node-red/47388)

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**Author:** [@Faizan123](https://discourse.nodered.org/u/Faizan123)\
**Replies:** 10\
**Last updated:** [20 June 2021 12:18 UTC](https://discourse.nodered.org/t/finding-devices-connected-t-a-router-using-node-red/47388 "2021-06-20T12:18:33Z")

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Hi, I am new on this forum and on Node red platform. I am looking for a node which can find out number of devices connected to the a specific router or network. Basically, I want to determine the number of occupants in …

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## [Function node, payload change text](https://discourse.nodered.org/t/function-node-payload-change-text/47337)

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**Author:** [@vikozo](https://discourse.nodered.org/u/vikozo)\
**Replies:** 7\
**Last updated:** [20 June 2021 09:27 UTC](https://discourse.nodered.org/t/function-node-payload-change-text/47337 "2021-06-20T09:27:18Z")

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Hello i have a function node writing msg.payload = { status: msg.payload.crc\_error } return msg; the Output if error, is then status: false is there a way to on the fly msg.payload.crc\_error if false write "CRC …

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## [Can not save changes in inject node with repeat option](https://discourse.nodered.org/t/can-not-save-changes-in-inject-node-with-repeat-option/47376)

<div class="topic-metadata">

**Author:** [@riker65](https://discourse.nodered.org/u/riker65)\
**Replies:** 15\
**Last updated:** [20 June 2021 08:23 UTC](https://discourse.nodered.org/t/can-not-save-changes-in-inject-node-with-repeat-option/47376 "2021-06-20T08:23:45Z")

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Hi can not save inject node with repeat option. After setting the option at specific time, saving it. Reopening it, changes are not saved. What did I miss? aqnyone having similar issue? Do not see an error message.,…

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## [MQTT OUT (IN) Diagnosis of connection + Client ID](https://discourse.nodered.org/t/mqtt-out-in-diagnosis-of-connection-client-id/47284)

<div class="topic-metadata">

**Author:** [@lostbits](https://discourse.nodered.org/u/lostbits)\
**Replies:** 9\
**Last updated:** [20 June 2021 07:10 UTC](https://discourse.nodered.org/t/mqtt-out-in-diagnosis-of-connection-client-id/47284 "2021-06-20T07:10:42Z")

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Hi, Node RED v1.3.5 I am using the MQTT IN and OUT nodes for different tasks. The most complicated thing is to identify, why a node can't subscribe or send. Sending by an ivalid topic or bad Client ID result in a disc…

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## [MQTT and Node Red QOS and Retention Test Result](https://discourse.nodered.org/t/mqtt-and-node-red-qos-and-retention-test-result/47382)

<div class="topic-metadata">

**Author:** [@tmichaeltx](https://discourse.nodered.org/u/tmichaeltx)\
**Replies:** 2\
**Last updated:** [20 June 2021 07:10 UTC](https://discourse.nodered.org/t/mqtt-and-node-red-qos-and-retention-test-result/47382 "2021-06-20T07:10:22Z")

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I suspect that this will be well understood already by most and totally logical to others without needing empirical evidence, but I wanted to share for those that are unsure of their intution about these parameters. Que…

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## [Python 3 function & Node-red disconnected](https://discourse.nodered.org/t/python-3-function-node-red-disconnected/7275)

<div class="topic-metadata">

**Author:** [@emspe](https://discourse.nodered.org/u/emspe)\
**Replies:** 24\
**Last updated:** [20 June 2021 01:35 UTC](https://discourse.nodered.org/t/python-3-function-node-red-disconnected/7275 "2021-06-20T01:35:57Z")

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Hello, I installed python 3 using npm install -g node-red-contrib-python3-function & just inject a simple code to print 'hello'. Suddenly node-red disconnected with below message in PowerShell. Though I tried to run no…

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## [Returning asyc function (mysql select query)](https://discourse.nodered.org/t/returning-asyc-function-mysql-select-query/47381)

<div class="topic-metadata">

**Author:** [@Ricardo-Miguel-Calde](https://discourse.nodered.org/u/Ricardo-Miguel-Calde)\
**Replies:** 8\
**Last updated:** [20 June 2021 01:08 UTC](https://discourse.nodered.org/t/returning-asyc-function-mysql-select-query/47381 "2021-06-20T01:08:38Z")

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Hello and TIA for anyone that could lead me to a solution.. I'm trying to make a SELECT query to a mysql database using mysql2 but the result when calling the function is always a promisse. I do manage to get data from…

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## [Migrating a UI node to Flexdash](https://discourse.nodered.org/t/migrating-a-ui-node-to-flexdash/47359)

<div class="topic-metadata">

**Author:** [@BartButenaers](https://discourse.nodered.org/u/BartButenaers)\
**Replies:** 5\
**Last updated:** [19 June 2021 23:03 UTC](https://discourse.nodered.org/t/migrating-a-ui-node-to-flexdash/47359 "2021-06-19T23:03:57Z")

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Hi Thorsten (@tve), Going to continue our discussion here. So my question is whether I will be able somehow to convert my current UI nodes some day to fit into the Flexdash concept. I don't say that this will ever be …

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## [Using a client side JS file](https://discourse.nodered.org/t/using-a-client-side-js-file/47338)

<div class="topic-metadata">

**Author:** [@Stwissel](https://discourse.nodered.org/u/Stwissel)\
**Replies:** 9\
**Last updated:** [19 June 2021 20:46 UTC](https://discourse.nodered.org/t/using-a-client-side-js-file/47338 "2021-06-19T20:46:24Z")

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When building some custom nodes, I want to keep them separate in multiple files: custom1.js, custom1.html, custom2.js, custom2.html However they share a lot of common functions in the editor (show/hide elements etc.) H…

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## [Function node - creating uuid in the code](https://discourse.nodered.org/t/function-node-creating-uuid-in-the-code/47358)

<div class="topic-metadata">

**Author:** [@rudaNode](https://discourse.nodered.org/u/rudaNode)\
**Replies:** 5\
**Last updated:** [19 June 2021 19:10 UTC](https://discourse.nodered.org/t/function-node-creating-uuid-in-the-code/47358 "2021-06-19T19:10:21Z")

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I am new to node-red and am trying to experiment with following code in a function node: var ce = {}; ce.id = "a8fd123d-5ac6-44bb-a146-898959a1812e"; msg.payload = ce; return msg; Except that I want to generate a ne…

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