# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=192

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

**Page:** 193

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## [Imported flows/](https://discourse.nodered.org/t/imported-flows/80062)

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**Author:** [@pgas37](https://discourse.nodered.org/u/pgas37)\
**Replies:** 17\
**Last updated:** [25 July 2023 21:23 UTC](https://discourse.nodered.org/t/imported-flows/80062 "2023-07-25T21:23:38Z")

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Hello, I installed node-red on a other Raspberry pi and from the old pi i did an export of all flows. After import of the flows on the new pi the débugnode is dead. They could be clicked on or off, but that does not wor…

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## [Worldmap static map files. Left Click events. access polyline mode directly](https://discourse.nodered.org/t/worldmap-static-map-files-left-click-events-access-polyline-mode-directly/79583)

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**Author:** [@marcpouliot](https://discourse.nodered.org/u/marcpouliot)\
**Replies:** 4\
**Last updated:** [25 July 2023 19:55 UTC](https://discourse.nodered.org/t/worldmap-static-map-files-left-click-events-access-polyline-mode-directly/79583 "2023-07-25T19:55:08Z")

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Hi, I am designing a small boat navigation system (on a lake) with a GPS (laetia bn880) and a stepper motor to change the direction of the boat. these work fine. I use World map as a user interface on my raspberry pi w…

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## [Logo on taskbar](https://discourse.nodered.org/t/logo-on-taskbar/80056)

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**Author:** [@m2iandom](https://discourse.nodered.org/u/m2iandom)\
**Replies:** 4\
**Last updated:** [25 July 2023 13:36 UTC](https://discourse.nodered.org/t/logo-on-taskbar/80056 "2023-07-25T13:36:44Z")

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Hello guys, I have added a logo to the taskbar using the script below inside a template node : the problem is that if I have multiple groups and select them repeatly from the hamburger icon, the logo will appear multip…

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## [Blank web page starting Node-Red](https://discourse.nodered.org/t/blank-web-page-starting-node-red/80047)

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**Author:** [@ScheepersJohan](https://discourse.nodered.org/u/ScheepersJohan)\
**Replies:** 11\
**Last updated:** [25 July 2023 13:00 UTC](https://discourse.nodered.org/t/blank-web-page-starting-node-red/80047 "2023-07-25T13:00:55Z")

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Hi, When I start a web browser on my laptop and navigate to the Raspberr PI ip:1880 I can access node-red. When I am starting Chromium from the PI I get a blank page. When I run sudo apt-get install chromium-b…

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## [String cutting, in the middle](https://discourse.nodered.org/t/string-cutting-in-the-middle/80050)

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**Author:** [@gideon](https://discourse.nodered.org/u/gideon)\
**Replies:** 4\
**Last updated:** [25 July 2023 11:24 UTC](https://discourse.nodered.org/t/string-cutting-in-the-middle/80050 "2023-07-25T11:24:27Z")

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Hello everyone. On the Raspberry Pi I connect to the USB input a module that has 8 A/D inputs. The module sends to the serial port every 500 MS the reading of 8 channels in analog input. I need a function that will fi…

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## [Cron-plus and jsonata: error in 3.1.0-beta.2](https://discourse.nodered.org/t/cron-plus-and-jsonata-error-in-3-1-0-beta-2/79892)

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**Author:** [@greengolfer](https://discourse.nodered.org/u/greengolfer)\
**Replies:** 11\
**Last updated:** [24 July 2023 20:13 UTC](https://discourse.nodered.org/t/cron-plus-and-jsonata-error-in-3-1-0-beta-2/79892 "2023-07-24T20:13:25Z")

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When using a jsonata payload in cron-plus eg. with a basic flow like: \[ { "id": "5b82d39f1670e2ed", "type": "cronplus", "z": "8238839dc502e4bd", "name": "", "outputField":…

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## [Replace() or tostring() "not a function"](https://discourse.nodered.org/t/replace-or-tostring-not-a-function/80040)

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**Author:** [@BitEater](https://discourse.nodered.org/u/BitEater)\
**Replies:** 3\
**Last updated:** [24 July 2023 15:37 UTC](https://discourse.nodered.org/t/replace-or-tostring-not-a-function/80040 "2023-07-24T15:37:42Z")

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I created a project with some flows on my Windows VM installation of Node Red. There is one function node with a line like msg.payload = msg.payload.replace("&amp;", "&"); On my Windows VM it works fine. On my Raspberr…

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## [If in an If doesn't work](https://discourse.nodered.org/t/if-in-an-if-doesnt-work/80028)

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**Author:** [@Nice\_to\_have](https://discourse.nodered.org/u/Nice_to_have)\
**Replies:** 6\
**Last updated:** [24 July 2023 14:01 UTC](https://discourse.nodered.org/t/if-in-an-if-doesnt-work/80028 "2023-07-24T14:01:43Z")

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Hi everyone, I want to check if a number is negative or positive. But untill now, global.set(port + ".NMEA.nav.position.alt.altitude\_relative" is not written if (string\[0\] == "GGA") { global.set(port + ".NMEA.UT…

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## [How to implement AWS-IoT Core?](https://discourse.nodered.org/t/how-to-implement-aws-iot-core/80034)

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**Author:** [@Ajmal](https://discourse.nodered.org/u/Ajmal)\
**Replies:** 0\
**Last updated:** [24 July 2023 06:30 UTC](https://discourse.nodered.org/t/how-to-implement-aws-iot-core/80034 "2023-07-24T06:30:09Z")

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can anyone help me to get an idea to configure aws-iot core for implementing purpose only not for certification..

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## [Dark Theme for a MacOS machine?](https://discourse.nodered.org/t/dark-theme-for-a-macos-machine/80030)

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**Author:** [@humphrysr](https://discourse.nodered.org/u/humphrysr)\
**Replies:** 1\
**Last updated:** [24 July 2023 05:29 UTC](https://discourse.nodered.org/t/dark-theme-for-a-macos-machine/80030 "2023-07-24T05:29:23Z")

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Is there a dark theme for Mac OS machines? Thank you

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## [Is there any way to trace what node/routine is updating a global variable?](https://discourse.nodered.org/t/is-there-any-way-to-trace-what-node-routine-is-updating-a-global-variable/79979)

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**Author:** [@craigcurtin](https://discourse.nodered.org/u/craigcurtin)\
**Replies:** 9\
**Last updated:** [24 July 2023 00:29 UTC](https://discourse.nodered.org/t/is-there-any-way-to-trace-what-node-routine-is-updating-a-global-variable/79979 "2023-07-24T00:29:11Z")

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As the title says - i have a routine/function/change node buried deep somewhere that is changing a global variable - is there any smart way to find what this is ? Craig

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## [Logic gate doesn't seem to behave logically](https://discourse.nodered.org/t/logic-gate-doesnt-seem-to-behave-logically/79531)

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**Author:** [@usernamepasswordBS](https://discourse.nodered.org/u/usernamepasswordBS)\
**Replies:** 94\
**Last updated:** [23 July 2023 23:02 UTC](https://discourse.nodered.org/t/logic-gate-doesnt-seem-to-behave-logically/79531 "2023-07-23T23:02:44Z")

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Hi, I know there are many questions similar to mine and I have read through quite a few of them but, still, I am none the wiser. I understand in a way that Node-red is not, and never will be, restricted to a logic gate…

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## [MQTT Node-Red light "state" "ON/OFF"](https://discourse.nodered.org/t/mqtt-node-red-light-state-on-off/80023)

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**Author:** [@EcarDK](https://discourse.nodered.org/u/EcarDK)\
**Replies:** 4\
**Last updated:** [23 July 2023 18:07 UTC](https://discourse.nodered.org/t/mqtt-node-red-light-state-on-off/80023 "2023-07-23T18:07:49Z")

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Hallo all I cant get my light to turn on and off. My MQTT Broker are connected, and I use MQTT Explorer to see the lamps mqtt topic. zigbee2mqtt/Lille PH Lampe here are my simple flow flows.json (1.8 KB) \[{"id":"780…

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## [Problem with libstdc++.so.6 after update](https://discourse.nodered.org/t/problem-with-libstdc-so-6-after-update/79971)

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**Author:** [@Wurmi](https://discourse.nodered.org/u/Wurmi)\
**Replies:** 8\
**Last updated:** [23 July 2023 17:22 UTC](https://discourse.nodered.org/t/problem-with-libstdc-so-6-after-update/79971 "2023-07-23T17:22:14Z")

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After update with apt update and apt full-upgrade i cant start Node-red anymore, because of the problem in the picture: i would be very thankful for your help

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## [FTP File Read Access Denied](https://discourse.nodered.org/t/ftp-file-read-access-denied/79927)

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**Author:** [@bachloo.rahul](https://discourse.nodered.org/u/bachloo.rahul)\
**Replies:** 3\
**Last updated:** [23 July 2023 14:54 UTC](https://discourse.nodered.org/t/ftp-file-read-access-denied/79927 "2023-07-23T14:54:14Z")

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Hello NR Team, I am Trying to read a file from remote ftp server. But I am receiving error access denied. \[ { "id": "8c9f40dfe34c996a", "type": "tab", "label": "Flow 1", "disabled…

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## [Capturing errors caused inside link-call flows](https://discourse.nodered.org/t/capturing-errors-caused-inside-link-call-flows/80010)

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**Author:** [@gregorius](https://discourse.nodered.org/u/gregorius)\
**Replies:** 20\
**Last updated:** [23 July 2023 12:18 UTC](https://discourse.nodered.org/t/capturing-errors-caused-inside-link-call-flows/80010 "2023-07-23T12:18:27Z")

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Hi There! I'm wondering what is the best way of capturing errors that are raised within the flow of a link-call? Example flow: \[{"id":"2bd6810d.e22ece","type":"catch","z":"da728ee9d651fde8","name":"","scope":\["2c94a22…

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## [Encoding issue in web resources loaded from /ui](https://discourse.nodered.org/t/encoding-issue-in-web-resources-loaded-from-ui/79762)

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**Author:** [@omrid](https://discourse.nodered.org/u/omrid)\
**Replies:** 7\
**Last updated:** [23 July 2023 09:51 UTC](https://discourse.nodered.org/t/encoding-issue-in-web-resources-loaded-from-ui/79762 "2023-07-23T09:51:32Z")

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I'm leveraging Node-red's dashboard web site (.../ui, which maps to \<NR home\>/node\_modules/node-red-dashboard/dist), to store & load web resources, such as HTML pages, images etc. When I try to load an HTML file (creat…

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## [Using Node-RED, how do I add missing time/temp data to an InfluxDB database?](https://discourse.nodered.org/t/using-node-red-how-do-i-add-missing-time-temp-data-to-an-influxdb-database/80005)

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**Author:** [@DublinBayPrawn](https://discourse.nodered.org/u/DublinBayPrawn)\
**Replies:** 9\
**Last updated:** [23 July 2023 09:09 UTC](https://discourse.nodered.org/t/using-node-red-how-do-i-add-missing-time-temp-data-to-an-influxdb-database/80005 "2023-07-23T09:09:16Z")

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I have Mosquitto MQTT collecting sensor data Node-RED InfluxDB Grafana all running in Docker containers on a Synology NAS and maintained via a PC. Recently the Node-RED container stopped working which was fixed wit…

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## [Add two payloads, enforcing both values arriving before summing them - help needed](https://discourse.nodered.org/t/add-two-payloads-enforcing-both-values-arriving-before-summing-them-help-needed/80006)

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**Author:** [@championc](https://discourse.nodered.org/u/championc)\
**Replies:** 2\
**Last updated:** [22 July 2023 21:07 UTC](https://discourse.nodered.org/t/add-two-payloads-enforcing-both-values-arriving-before-summing-them-help-needed/80006 "2023-07-22T21:07:56Z")

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I am injecting two separate values into a SUM node, but it sums each time a value arrives. Can I somehow enforce that the values are summed only after BOTH values have arrived ?

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## [Standalone Flow Viewer Plugin](https://discourse.nodered.org/t/standalone-flow-viewer-plugin/79388)

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**Author:** [@gregorius](https://discourse.nodered.org/u/gregorius)\
**Replies:** 70\
**Last updated:** [21 July 2023 21:50 UTC](https://discourse.nodered.org/t/standalone-flow-viewer-plugin/79388 "2023-07-21T21:50:52Z")

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Hi There! I have the same question as @rko I thought about this while writing an article comparing Jupyter to Node-RED. Jupyter notebooks can be previewed on GitHub (for example) yet flows.json are simply long json f…

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## [Help with deleting and re-installing Node-Red and associated software on Windows 10](https://discourse.nodered.org/t/help-with-deleting-and-re-installing-node-red-and-associated-software-on-windows-10/79994)

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**Author:** [@Purclewan](https://discourse.nodered.org/u/Purclewan)\
**Replies:** 32\
**Last updated:** [22 July 2023 17:32 UTC](https://discourse.nodered.org/t/help-with-deleting-and-re-installing-node-red-and-associated-software-on-windows-10/79994 "2023-07-22T17:32:26Z")

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Generally, I run node-red on Raspberry Pi but I also have a Win10 based system that I use for general experimentation. I had not used it for a couple of weeks and during that time had a power outage which I suspect corru…

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## [Suddenly unable to send text messages from Node Red](https://discourse.nodered.org/t/suddenly-unable-to-send-text-messages-from-node-red/79846)

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**Author:** [@ScottJ2505](https://discourse.nodered.org/u/ScottJ2505)\
**Replies:** 20\
**Last updated:** [22 July 2023 13:44 UTC](https://discourse.nodered.org/t/suddenly-unable-to-send-text-messages-from-node-red/79846 "2023-07-22T13:44:02Z")

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Hello, I created a home automation system using Node Red. When someone comes to the porch, a motion detector picks up the movement and I normally get an email message and a text message (using the Node Red email node) …

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## [Change a value within a CSV File](https://discourse.nodered.org/t/change-a-value-within-a-csv-file/79997)

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**Author:** [@mlabella](https://discourse.nodered.org/u/mlabella)\
**Replies:** 8\
**Last updated:** [21 July 2023 14:35 UTC](https://discourse.nodered.org/t/change-a-value-within-a-csv-file/79997 "2023-07-21T14:35:37Z")

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So my input csv file that I am reading from has a reading of this: e0040150c6cd280d,bolt,5 e0040150c6cd14c3,screw,0 e0040150c6cd2a81,nut,3 e0040150c6cd245b,washer,0 I am struggling to figure out how to write a funct…

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## [Question: Sonos plus, best way to stop all](https://discourse.nodered.org/t/question-sonos-plus-best-way-to-stop-all/79988)

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**Author:** [@jemmail](https://discourse.nodered.org/u/jemmail)\
**Replies:** 1\
**Last updated:** [21 July 2023 09:21 UTC](https://discourse.nodered.org/t/question-sonos-plus-best-way-to-stop-all/79988 "2023-07-21T09:21:35Z")

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Hello, What is the best way to stop all my Sonos players (I have 5 of them) with node-red-contrib-sonos-plus ? It should work anytime (independent of groups..). Like a kill switch, or a "Leave Home" command. Many than…

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## [Injector node with value and timestamp](https://discourse.nodered.org/t/injector-node-with-value-and-timestamp/79985)

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**Author:** [@Ohlala68](https://discourse.nodered.org/u/Ohlala68)\
**Replies:** 2\
**Last updated:** [21 July 2023 06:55 UTC](https://discourse.nodered.org/t/injector-node-with-value-and-timestamp/79985 "2023-07-21T06:55:02Z")

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Hello. I´m struggeling with a what I think is a very simple problem. I want to mimik live devices to test in flows, but I can´t get it right. I want a injector node that sends a value and a timestamp, like the live de…

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## [General Feedback and Thanks](https://discourse.nodered.org/t/general-feedback-and-thanks/79983)

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**Author:** [@wilsomrm2](https://discourse.nodered.org/u/wilsomrm2)\
**Replies:** 0\
**Last updated:** [21 July 2023 03:29 UTC](https://discourse.nodered.org/t/general-feedback-and-thanks/79983 "2023-07-21T03:29:05Z")

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Hi Team, I am a senior developer/architect that has been in the industry for 25 years. As you may well expect I have many scars and quite a number of languages behind me. I have been using NodeRed now for 3 years and …

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## [How to edit form json of the ubi-element?](https://discourse.nodered.org/t/how-to-edit-form-json-of-the-ubi-element/79950)

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**Author:** [@54jinyistudio](https://discourse.nodered.org/u/54jinyistudio)\
**Replies:** 1\
**Last updated:** [20 July 2023 19:44 UTC](https://discourse.nodered.org/t/how-to-edit-form-json-of-the-ubi-element/79950 "2023-07-20T19:44:07Z")

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I want to add checkbox,radio components to uibuilder page. Do i need to input those json data to display the checkbox and radio on the webpage normally ?

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## [uibuilder.eventSend not working with Bootstrap-Vue Spinbutton @change event](https://discourse.nodered.org/t/uibuilder-eventsend-not-working-with-bootstrap-vue-spinbutton-change-event/79946)

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**Author:** [@serendipitist](https://discourse.nodered.org/u/serendipitist)\
**Replies:** 1\
**Last updated:** [20 July 2023 19:31 UTC](https://discourse.nodered.org/t/uibuilder-eventsend-not-working-with-bootstrap-vue-spinbutton-change-event/79946 "2023-07-20T19:31:06Z")

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I'm building a dashboard in uibuilder with Vue2/Bootstrap, starting from the template provided. I'm using a Spinbutton to allow the user to change the values of certain settings. The @change event on the Spinbutton calls…

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## [INA219 multiple sensors](https://discourse.nodered.org/t/ina219-multiple-sensors/79949)

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**Author:** [@rmystique](https://discourse.nodered.org/u/rmystique)\
**Replies:** 3\
**Last updated:** [20 July 2023 18:02 UTC](https://discourse.nodered.org/t/ina219-multiple-sensors/79949 "2023-07-20T18:02:03Z")

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I am trying to use 2 INA219 current sensors, with one connected and at address 40 it works fine, when i put a second one on the bus with a different address I just get a error cant communicate with device message, but th…

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## [Real Time Stock Prices](https://discourse.nodered.org/t/real-time-stock-prices/79972)

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**Author:** [@damica51](https://discourse.nodered.org/u/damica51)\
**Replies:** 1\
**Last updated:** [20 July 2023 17:10 UTC](https://discourse.nodered.org/t/real-time-stock-prices/79972 "2023-07-20T17:10:38Z")

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I use to use "Commodity Api" to get the real time current price of Gold, Silver, Natural Gas, Brent Crude Oil, West Texas Crude. Then they dropped the FREE Service, so I then found Yahoo Finance and there was a Node Red …

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