# Latest

**URL:** https://discourse.nodered.org/latest.md?no_subcategories=false&page=534

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

**Page:** 535

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## [HTML page refreshing too fast for database to update](https://discourse.nodered.org/t/html-page-refreshing-too-fast-for-database-to-update/64655)

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**Author:** [@papershow](https://discourse.nodered.org/u/papershow)\
**Replies:** 2\
**Last updated:** [15 July 2022 19:31 UTC](https://discourse.nodered.org/t/html-page-refreshing-too-fast-for-database-to-update/64655 "2022-07-15T19:31:12Z")

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Hi, https://youtu.be/T6lf39TYjAY?t=2197 I am following this tutorial as a baseline to learn HTML to start a new project. I'm at the linked timestamp, where data is being added to a table, but every time I click a butto…

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## [MQTT broker messages getting lost](https://discourse.nodered.org/t/mqtt-broker-messages-getting-lost/65095)

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**Author:** [@KarolisL](https://discourse.nodered.org/u/KarolisL)\
**Replies:** 16\
**Last updated:** [15 July 2022 19:26 UTC](https://discourse.nodered.org/t/mqtt-broker-messages-getting-lost/65095 "2022-07-15T19:26:22Z")

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Hello, I've created a test case with NR to check how our broker can handle big quantities of data. In flow bellow there are 10 flows each containing, 200 clients, every client sends 20topics. I cannot copy paste all f…

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## [\[uibuilder\] Updated VueJS information and examples, revamped WIKI menu](https://discourse.nodered.org/t/uibuilder-updated-vuejs-information-and-examples-revamped-wiki-menu/65162)

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**Author:** [@TotallyInformation](https://discourse.nodered.org/u/TotallyInformation)\
**Replies:** 1\
**Last updated:** [15 July 2022 19:23 UTC](https://discourse.nodered.org/t/uibuilder-updated-vuejs-information-and-examples-revamped-wiki-menu/65162 "2022-07-15T19:23:55Z")

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Hi all, For those of you in particular who use VueJS, you may be glad to know that I've revamped the WIKI menu and added some new pages. There is now a general what works with uibuilder & vue page and a new example cov…

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## [RangeError on using Gauge / memory leak?](https://discourse.nodered.org/t/rangeerror-on-using-gauge-memory-leak/65083)

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**Author:** [@WhiteLion](https://discourse.nodered.org/u/WhiteLion)\
**Replies:** 7\
**Last updated:** [15 July 2022 18:50 UTC](https://discourse.nodered.org/t/rangeerror-on-using-gauge-memory-leak/65083 "2022-07-15T18:50:48Z")

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I am using a gauge node to count down how long a switch is set to state "on". I t will tick down to zero. Yesterday I saw massive "RangeError: Maximum stack size exceeded". I saw it often that node red runs on mem limit…

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## [Sonoff iFan03 turn off when Node-RED restarts](https://discourse.nodered.org/t/sonoff-ifan03-turn-off-when-node-red-restarts/65102)

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**Author:** [@phreaq](https://discourse.nodered.org/u/phreaq)\
**Replies:** 2\
**Last updated:** [15 July 2022 18:44 UTC](https://discourse.nodered.org/t/sonoff-ifan03-turn-off-when-node-red-restarts/65102 "2022-07-15T18:44:44Z")

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I have three Sonoff iFan03 that all turn off whenever Node-RED restarts (running within Home Assistant). Whereas my other Sonoff devices maintain their state. The iFan's have been flashed with Tasmota. Any ideas as to w…

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## [Inserir valores do Modbus no MySQL](https://discourse.nodered.org/t/inserir-valores-do-modbus-no-mysql/65160)

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**Author:** [@Flesch](https://discourse.nodered.org/u/Flesch)\
**Replies:** 0\
**Last updated:** [15 July 2022 18:02 UTC](https://discourse.nodered.org/t/inserir-valores-do-modbus-no-mysql/65160 "2022-07-15T18:02:59Z")

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Boa tarde a todos. Estou tendo dificuldades para comunicar corretamente o Modbus com MySL. Dentro do change eu botei (UPDATE projeto.motobomba SET bomba = '4' WHERE (idmotobomba = '1'):wink: que é o comando do MySQL …

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## [DHT11 flow problem](https://discourse.nodered.org/t/dht11-flow-problem/65157)

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**Author:** [@mynodered](https://discourse.nodered.org/u/mynodered)\
**Replies:** 3\
**Last updated:** [15 July 2022 18:11 UTC](https://discourse.nodered.org/t/dht11-flow-problem/65157 "2022-07-15T18:11:25Z")

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I have the following flow where I am receiving DHT11 data from serial port. I build a function to split the incoming data and output the humidity and temperature data on two outputs but I am not able to do. Looks like th…

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## [How to set and open flow in seperate urls?](https://discourse.nodered.org/t/how-to-set-and-open-flow-in-seperate-urls/65105)

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**Author:** [@mynodered](https://discourse.nodered.org/u/mynodered)\
**Replies:** 6\
**Last updated:** [15 July 2022 17:47 UTC](https://discourse.nodered.org/t/how-to-set-and-open-flow-in-seperate-urls/65105 "2022-07-15T17:47:51Z")

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How can we set each flow or whole application in specific page url? Like I have two flows, flow1 and flow2 and when i click deploy the flow2 always gets opened like http://localhost:1880/#flow/2462c2061703aa93. So, How…

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## [Run firefox --kiosk automatically](https://discourse.nodered.org/t/run-firefox-kiosk-automatically/65155)

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**Author:** [@denissanga](https://discourse.nodered.org/u/denissanga)\
**Replies:** 0\
**Last updated:** [15 July 2022 17:31 UTC](https://discourse.nodered.org/t/run-firefox-kiosk-automatically/65155 "2022-07-15T17:31:00Z")

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Hi all, 1) I would like run firefox --kiosk http://127.0.0.1:1880/ui on my screen just when page is correctly created by node-red service and not before, because running it on boot a page of unreachable page appears. 2…

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## [If you are using Docker Compose v1 with node-RED and wish to transition to Docker Compose v2, you might want to have a look at the compatibililty matrix](https://discourse.nodered.org/t/if-you-are-using-docker-compose-v1-with-node-red-and-wish-to-transition-to-docker-compose-v2-you-might-want-to-have-a-look-at-the-compatibililty-matrix/65149)

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**Author:** [@Shan](https://discourse.nodered.org/u/Shan)\
**Replies:** 0\
**Last updated:** [15 July 2022 16:29 UTC](https://discourse.nodered.org/t/if-you-are-using-docker-compose-v1-with-node-red-and-wish-to-transition-to-docker-compose-v2-you-might-want-to-have-a-look-at-the-compatibililty-matrix/65149 "2022-07-15T16:29:23Z")

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This is especially useful if you use bcrypt passwords as Docker compose v1 and v2 handle them very different. Hope this helps the community.

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## [Dynamic link for link out node](https://discourse.nodered.org/t/dynamic-link-for-link-out-node/65148)

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**Author:** [@tcr000](https://discourse.nodered.org/u/tcr000)\
**Replies:** 0\
**Last updated:** [15 July 2022 16:16 UTC](https://discourse.nodered.org/t/dynamic-link-for-link-out-node/65148 "2022-07-15T16:16:52Z")

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Dynamic linking is now supported in the link call node. Please add the same feature to the link out node. While this can be achieved using a switch and several link out nodes, it would be a nice addition, just like on li…

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## [JSON send to TCP](https://discourse.nodered.org/t/json-send-to-tcp/65141)

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**Author:** [@wiwan-wijoyo](https://discourse.nodered.org/u/wiwan-wijoyo)\
**Replies:** 4\
**Last updated:** [15 July 2022 15:28 UTC](https://discourse.nodered.org/t/json-send-to-tcp/65141 "2022-07-15T15:28:45Z")

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this is an example of sending a command via terminal the result OK {"CommuniqueType":"ReadRequest","Header":{"Url":"/server/status/ping"}} I tried to connect via TCP and send the command, but the result is an error. …

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## [Node-RED 3.0 - Question on Diagnostic Report](https://discourse.nodered.org/t/node-red-3-0-question-on-diagnostic-report/65116)

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**Author:** [@Andrei](https://discourse.nodered.org/u/Andrei)\
**Replies:** 4\
**Last updated:** [15 July 2022 14:38 UTC](https://discourse.nodered.org/t/node-red-3-0-question-on-diagnostic-report/65116 "2022-07-15T14:38:58Z")

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Diagnostic Report is a nice addition to Node-RED (as all other new features). Is this a REST endpoint that can reply to an HTTP request ? Or otherwise perhaps its code can be invoked inside a function node to create a me…

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## [Choosing the right solenoid](https://discourse.nodered.org/t/choosing-the-right-solenoid/65029)

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**Author:** [@BartButenaers](https://discourse.nodered.org/u/BartButenaers)\
**Replies:** 31\
**Last updated:** [15 July 2022 14:19 UTC](https://discourse.nodered.org/t/choosing-the-right-solenoid/65029 "2022-07-15T14:19:08Z")

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Hi folks, Had installed an electromagnetic valve for my sprinklers, which I need to control now via Node-RED. The valve contains a solenoid, and multiple options are available: Standard solenoid 24V AC Optional solen…

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## [If statement in for loop](https://discourse.nodered.org/t/if-statement-in-for-loop/65052)

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**Author:** [@cyntia](https://discourse.nodered.org/u/cyntia)\
**Replies:** 31\
**Last updated:** [15 July 2022 14:01 UTC](https://discourse.nodered.org/t/if-statement-in-for-loop/65052 "2022-07-15T14:01:59Z")

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I want to retrieve all objects which are true(if condition).but I have only one output(the first true). I need to have it in an array in order to be able to send it in an http respond node. could someone please help? …

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## [Query to write data to mySQL database(error)](https://discourse.nodered.org/t/query-to-write-data-to-mysql-database-error/65128)

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**Author:** [@JackJackTan414](https://discourse.nodered.org/u/JackJackTan414)\
**Replies:** 6\
**Last updated:** [15 July 2022 13:43 UTC](https://discourse.nodered.org/t/query-to-write-data-to-mysql-database-error/65128 "2022-07-15T13:43:01Z")

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Hi. kindly help me cross check what seems to be the error here. I want to pass an input string value to "msg.text" variable and i want it to write on mySQL database. my "msg.payload" works fine, the issue lies only on t…

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## [Changing the color of table cell based on value](https://discourse.nodered.org/t/changing-the-color-of-table-cell-based-on-value/31543)

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**Author:** [@vangalvin](https://discourse.nodered.org/u/vangalvin)\
**Replies:** 5\
**Last updated:** [15 July 2022 13:14 UTC](https://discourse.nodered.org/t/changing-the-color-of-table-cell-based-on-value/31543 "2022-07-15T13:14:40Z")

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I have packets comming in via MQTT from several devices. msg.topic is changed to reflect the device's ID then the message is passed through the collector and only passed to the filter values have changed or another dev…

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## [Search array, continue if string is found](https://discourse.nodered.org/t/search-array-continue-if-string-is-found/65127)

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**Author:** [@network\_potato](https://discourse.nodered.org/u/network_potato)\
**Replies:** 2\
**Last updated:** [15 July 2022 12:36 UTC](https://discourse.nodered.org/t/search-array-continue-if-string-is-found/65127 "2022-07-15T12:36:27Z")

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I have the following payload: { "code": 200, "message": "Request response is successful", "data": \[ { "origin\_info": { "trackinfo": \[ { …

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## [I tried to read my Mitsubishi IQF series PLC with the MC Protocol. But I am constantly getting this timeout error](https://discourse.nodered.org/t/i-tried-to-read-my-mitsubishi-iqf-series-plc-with-the-mc-protocol-but-i-am-constantly-getting-this-timeout-error/65140)

<div class="topic-metadata">

**Author:** [@ReeseJohn](https://discourse.nodered.org/u/ReeseJohn)\
**Replies:** 3\
**Last updated:** [15 July 2022 11:18 UTC](https://discourse.nodered.org/t/i-tried-to-read-my-mitsubishi-iqf-series-plc-with-the-mc-protocol-but-i-am-constantly-getting-this-timeout-error/65140 "2022-07-15T11:18:14Z")

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I am using the Node Red version of v3.0.0.

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## [Viewing a PDF from the dashboard](https://discourse.nodered.org/t/viewing-a-pdf-from-the-dashboard/65086)

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**Author:** [@carflomi](https://discourse.nodered.org/u/carflomi)\
**Replies:** 5\
**Last updated:** [15 July 2022 09:18 UTC](https://discourse.nodered.org/t/viewing-a-pdf-from-the-dashboard/65086 "2022-07-15T09:18:03Z")

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Hello. I am trying to view a pdf from inside a dashboard. More specifically: by clicking on a button, to be able to open a pdf (always the same pdf the user does not need to search for it). When the button is pressed …

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## [Hide disabled flows option in the top bar menu](https://discourse.nodered.org/t/hide-disabled-flows-option-in-the-top-bar-menu/65131)

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**Author:** [@ioptrv](https://discourse.nodered.org/u/ioptrv)\
**Replies:** 0\
**Last updated:** [15 July 2022 08:53 UTC](https://discourse.nodered.org/t/hide-disabled-flows-option-in-the-top-bar-menu/65131 "2022-07-15T08:53:27Z")

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I would like to hide all disabled flows from the top bar at once, instead of hiding each of them separately (that would save me a massive number of clicks)

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## [Await and asynch errors within node-red node js file](https://discourse.nodered.org/t/await-and-asynch-errors-within-node-red-node-js-file/65123)

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**Author:** [@chappo\_2](https://discourse.nodered.org/u/chappo_2)\
**Replies:** 2\
**Last updated:** [15 July 2022 08:35 UTC](https://discourse.nodered.org/t/await-and-asynch-errors-within-node-red-node-js-file/65123 "2022-07-15T08:35:00Z")

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Hi, I am attempting to expand the functionality of the node-red-serial-port node by allowing it to take in the PID, VID and serial number of a serial device and connect to the the corresponding serial port, as opposed to…

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## [Add Logo in Titlebar](https://discourse.nodered.org/t/add-logo-in-titlebar/65080)

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**Author:** [@quickquestion](https://discourse.nodered.org/u/quickquestion)\
**Replies:** 1\
**Last updated:** [14 July 2022 12:11 UTC](https://discourse.nodered.org/t/add-logo-in-titlebar/65080 "2022-07-14T12:11:47Z")

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I want to add a Logo to my Node Red Dashboard, it should go in the corner where the clock is now (screenshot). I dont know anything about css in node red, i hope somebody can help me

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## [KNX Water Leakage Sensor: Convert Alternating 0|1 to Alarm Flag](https://discourse.nodered.org/t/knx-water-leakage-sensor-convert-alternating-0-1-to-alarm-flag/65100)

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**Author:** [@mathias-ewald](https://discourse.nodered.org/u/mathias-ewald)\
**Replies:** 10\
**Last updated:** [15 July 2022 08:09 UTC](https://discourse.nodered.org/t/knx-water-leakage-sensor-convert-alternating-0-1-to-alarm-flag/65100 "2022-07-15T08:09:47Z")

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Hi there, I have a KNX water leakage sensor that sends nothing to the group address when there is no water detected. When there's a leakage it begins sending alternating zeroes and ones to the group address. In Node-RE…

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## [How to convert connection flow into JS logic](https://discourse.nodered.org/t/how-to-convert-connection-flow-into-js-logic/65121)

<div class="topic-metadata">

**Author:** [@Dycle](https://discourse.nodered.org/u/Dycle)\
**Replies:** 1\
**Last updated:** [15 July 2022 07:28 UTC](https://discourse.nodered.org/t/how-to-convert-connection-flow-into-js-logic/65121 "2022-07-15T07:28:15Z")

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Now only JSON can be transformed,How to convert connection flow into JS logic

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## [Saving settings as flatfiles](https://discourse.nodered.org/t/saving-settings-as-flatfiles/65075)

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**Author:** [@rxdeath](https://discourse.nodered.org/u/rxdeath)\
**Replies:** 8\
**Last updated:** [15 July 2022 07:27 UTC](https://discourse.nodered.org/t/saving-settings-as-flatfiles/65075 "2022-07-15T07:27:40Z")

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i have a 'recipe' i am working and i have the basic starting parameters hardcoded into a node. i want to give the client a way to do these things: \*view and then load a settings file out of a directory \*change/make n…

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## [Can't use Node-red console commands on beaglebone black](https://discourse.nodered.org/t/cant-use-node-red-console-commands-on-beaglebone-black/64193)

<div class="topic-metadata">

**Author:** [@chappo\_2](https://discourse.nodered.org/u/chappo_2)\
**Replies:** 3\
**Last updated:** [15 July 2022 07:13 UTC](https://discourse.nodered.org/t/cant-use-node-red-console-commands-on-beaglebone-black/64193 "2022-07-15T07:13:37Z")

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I am trying to use the node-red command-lines on a beaglebone black. In particualar I am doing this as I want to use generate a password hash, but from testing it, I have found that none of the other commands work either…

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## [Replace ' with anything else for SQL](https://discourse.nodered.org/t/replace-with-anything-else-for-sql/64797)

<div class="topic-metadata">

**Author:** [@smitterer](https://discourse.nodered.org/u/smitterer)\
**Replies:** 6\
**Last updated:** [15 July 2022 06:16 UTC](https://discourse.nodered.org/t/replace-with-anything-else-for-sql/64797 "2022-07-15T06:16:53Z")

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Hi, I'm getting an error when trying to import data from a csv into a MariaDB: Error: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use n…

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## [Best way to monitor a remote PC](https://discourse.nodered.org/t/best-way-to-monitor-a-remote-pc/64855)

<div class="topic-metadata">

**Author:** [@jbudd](https://discourse.nodered.org/u/jbudd)\
**Replies:** 19\
**Last updated:** [15 July 2022 04:34 UTC](https://discourse.nodered.org/t/best-way-to-monitor-a-remote-pc/64855 "2022-07-15T04:34:25Z")

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There is a brand new Windows 10 PC on the other side of the world for which I'm the go-to guy when things go wrong. It would be nice if the PC was sending me it's temperature, memory usage, etc so I could spot trends be…

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## [Sense Hat Output Node](https://discourse.nodered.org/t/sense-hat-output-node/64923)

<div class="topic-metadata">

**Author:** [@Brett](https://discourse.nodered.org/u/Brett)\
**Replies:** 8\
**Last updated:** [15 July 2022 03:33 UTC](https://discourse.nodered.org/t/sense-hat-output-node/64923 "2022-07-15T03:33:03Z")

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Node Red Version = V2.2.2 Node JS Version = 16.16.0 I'm having trouble getting the "Raspberry Pi Sense HAT output node." to work consistently. The help says that "This node sends commands to the 8x8 LED display on the …

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