# Latest

**URL:** https://discourse.nodered.org/latest.md?no_subcategories=false&page=463

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

**Page:** 464

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## [How to force ui\_text value to NOT be bold](https://discourse.nodered.org/t/how-to-force-ui-text-value-to-not-be-bold/70412)

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**Author:** [@mzn723](https://discourse.nodered.org/u/mzn723)\
**Replies:** 2\
**Last updated:** [11 November 2022 12:11 UTC](https://discourse.nodered.org/t/how-to-force-ui-text-value-to-not-be-bold/70412 "2022-11-11T12:11:01Z")

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I'm novice at html I thought this should be simple, but I've been wasting quiet sometime on this. So, other than using a ui\_template node, how do I force the value on a ui\_text to appear in normal font, to not be bold? …

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## [Reliable reading multiple ds18b20’s with a raspberry pi without flow stalls](https://discourse.nodered.org/t/reliable-reading-multiple-ds18b20-s-with-a-raspberry-pi-without-flow-stalls/70433)

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**Author:** [@torrdan](https://discourse.nodered.org/u/torrdan)\
**Replies:** 4\
**Last updated:** [11 November 2022 11:30 UTC](https://discourse.nodered.org/t/reliable-reading-multiple-ds18b20-s-with-a-raspberry-pi-without-flow-stalls/70433 "2022-11-11T11:30:20Z")

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Hi all, I have the following setup: 4 digital temperature sensors DS18b20 which are physically wired in a parallel configuration (sensors are connected one after the other in a line) with CAT5 wires to the GPIO4 of the…

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## [How do I convert MySQL TIMESTAMP to UK date/time format?](https://discourse.nodered.org/t/how-do-i-convert-mysql-timestamp-to-uk-date-time-format/70416)

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**Author:** [@Richard238](https://discourse.nodered.org/u/Richard238)\
**Replies:** 2\
**Last updated:** [11 November 2022 09:17 UTC](https://discourse.nodered.org/t/how-do-i-convert-mysql-timestamp-to-uk-date-time-format/70416 "2022-11-11T09:17:03Z")

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Setup a Pi sending cpu temperature readings, stored in MySQL. I have an SQL SELECT in a function node which is pulling in an array of objects. I have got the temperature out of the object and showing on a node-red dash…

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## [Dynamic filename with msg.filename](https://discourse.nodered.org/t/dynamic-filename-with-msg-filename/70370)

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**Author:** [@TROJAN053](https://discourse.nodered.org/u/TROJAN053)\
**Replies:** 10\
**Last updated:** [11 November 2022 09:11 UTC](https://discourse.nodered.org/t/dynamic-filename-with-msg-filename/70370 "2022-11-11T09:11:03Z")

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Hi, I have to write my payload to a file with Dynamic filename each of time using msg.filename. In the the function i am using msg.filename= 'E:\\Software\\DFQ\\abc.DFQ' but file is not getting generated and but when i ke…

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## [How to store two different ARRAY in a variable in the flow, and JOIN in a new unique array?](https://discourse.nodered.org/t/how-to-store-two-different-array-in-a-variable-in-the-flow-and-join-in-a-new-unique-array/70382)

<div class="topic-metadata">

**Author:** [@lumanga](https://discourse.nodered.org/u/lumanga)\
**Replies:** 2\
**Last updated:** [11 November 2022 08:20 UTC](https://discourse.nodered.org/t/how-to-store-two-different-array-in-a-variable-in-the-flow-and-join-in-a-new-unique-array/70382 "2022-11-11T08:20:25Z")

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Dear all, I have a particular device, that gives me an array when I ask the value. I have two or more of this devices. How can I save/store "Array" from "A" and "B" and so on... in a "flow.set" variable or something s…

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## [HOW to implement SSE in Node-Red?](https://discourse.nodered.org/t/how-to-implement-sse-in-node-red/70377)

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**Author:** [@donghyeon95](https://discourse.nodered.org/u/donghyeon95)\
**Replies:** 3\
**Last updated:** [11 November 2022 07:02 UTC](https://discourse.nodered.org/t/how-to-implement-sse-in-node-red/70377 "2022-11-11T07:02:12Z")

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Hi, node-red-ers Help!! I am using node-red as a web application server. I need to send a notification from the web server to the client through sse, how can I implement it in node-red? When I check the http node, th…

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## [Node-RED DELETE /flows API method](https://discourse.nodered.org/t/node-red-delete-flows-api-method/70424)

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**Author:** [@Jiyeon](https://discourse.nodered.org/u/Jiyeon)\
**Replies:** 3\
**Last updated:** [11 November 2022 07:53 UTC](https://discourse.nodered.org/t/node-red-delete-flows-api-method/70424 "2022-11-11T07:53:34Z")

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Node-RED doesnt Have a Delete all flows method. How can I delete all flows? I assume to delete all, I would do a DELETE /flow/:id for all flows?

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## [How do i use a variable in global.get ? i.e. global.get(variablename)](https://discourse.nodered.org/t/how-do-i-use-a-variable-in-global-get-i-e-global-get-variablename/70419)

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**Author:** [@TheBartoMan](https://discourse.nodered.org/u/TheBartoMan)\
**Replies:** 1\
**Last updated:** [10 November 2022 23:07 UTC](https://discourse.nodered.org/t/how-do-i-use-a-variable-in-global-get-i-e-global-get-variablename/70419 "2022-11-10T23:07:44Z")

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I have wrote a funtion that i want to use multiple times. I need to do a global.get but instead of the usual global.get("xxxxx") where you specify the specific you want to lookup, i want to use a variable for the value …

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## [How to create a sequence to send msg one after another instead in parallel](https://discourse.nodered.org/t/how-to-create-a-sequence-to-send-msg-one-after-another-instead-in-parallel/70363)

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**Author:** [@shivam422](https://discourse.nodered.org/u/shivam422)\
**Replies:** 4\
**Last updated:** [10 November 2022 22:08 UTC](https://discourse.nodered.org/t/how-to-create-a-sequence-to-send-msg-one-after-another-instead-in-parallel/70363 "2022-11-10T22:08:28Z")

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Like the image shows. I want to chain the msgs that are being sent with a small delay in between them. Currently function just spits out the array with the list and everything gets triggered all at once because of tha…

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## [A loop in function with x time output](https://discourse.nodered.org/t/a-loop-in-function-with-x-time-output/70415)

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**Author:** [@edstobi](https://discourse.nodered.org/u/edstobi)\
**Replies:** 4\
**Last updated:** [10 November 2022 21:53 UTC](https://discourse.nodered.org/t/a-loop-in-function-with-x-time-output/70415 "2022-11-10T21:53:11Z")

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Hello if i have a function, can i write a for next or loop loop there, which reads a number of global data at each start, calculates it and then writes it with a new topic and payload? E.g. read all global values go …

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## [Hola buenas ,soy nuevo en node red alguien sabe , porque me sale este tipo de error en mi dashboard cuando le doy deploy, la imagen svg de mi scada no me sale en mi dashboard ,por favor alquien me ayuda ,](https://discourse.nodered.org/t/hola-buenas-soy-nuevo-en-node-red-alguien-sabe-porque-me-sale-este-tipo-de-error-en-mi-dashboard-cuando-le-doy-deploy-la-imagen-svg-de-mi-scada-no-me-sale-en-mi-dashboard-por-favor-alquien-me-ayuda/70346)

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**Author:** [@jhoningMTN](https://discourse.nodered.org/u/jhoningMTN)\
**Replies:** 9\
**Last updated:** [10 November 2022 21:42 UTC](https://discourse.nodered.org/t/hola-buenas-soy-nuevo-en-node-red-alguien-sabe-porque-me-sale-este-tipo-de-error-en-mi-dashboard-cuando-le-doy-deploy-la-imagen-svg-de-mi-scada-no-me-sale-en-mi-dashboard-por-favor-alquien-me-ayuda/70346 "2022-11-10T21:42:25Z")

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Hello good, I'm new to node red, does anyone know, why I get this type of error in my dashboard when I give it deploy, the svg image of my scada does not appear in my dashboard, please someone help me, flows .jso…

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## [\`write file\` node - documentation question](https://discourse.nodered.org/t/write-file-node-documentation-question/70373)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 8\
**Last updated:** [10 November 2022 20:29 UTC](https://discourse.nodered.org/t/write-file-node-documentation-question/70373 "2022-11-10T20:29:31Z")

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NR 3.0.2 I was reading someone's question about file writing. Opening the write file node, I'm confused. Where is path explained in the documentation as input?

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## [Function to cut text message](https://discourse.nodered.org/t/function-to-cut-text-message/70398)

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**Author:** [@gideon](https://discourse.nodered.org/u/gideon)\
**Replies:** 5\
**Last updated:** [10 November 2022 20:05 UTC](https://discourse.nodered.org/t/function-to-cut-text-message/70398 "2022-11-10T20:05:29Z")

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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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## [Node-red http request and led connection](https://discourse.nodered.org/t/node-red-http-request-and-led-connection/70401)

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**Author:** [@cano](https://discourse.nodered.org/u/cano)\
**Replies:** 8\
**Last updated:** [10 November 2022 19:32 UTC](https://discourse.nodered.org/t/node-red-http-request-and-led-connection/70401 "2022-11-10T19:32:44Z")

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Hello I have a stream and when I send an http request in my stream, if the result is successful, the green light will light up if it fails, the red light will light up how can I do

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## [Action between two time strings](https://discourse.nodered.org/t/action-between-two-time-strings/70067)

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**Author:** [@wofforduk](https://discourse.nodered.org/u/wofforduk)\
**Replies:** 3\
**Last updated:** [10 November 2022 19:09 UTC](https://discourse.nodered.org/t/action-between-two-time-strings/70067 "2022-11-10T19:09:58Z")

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Hi There - I don't suppose there is an easy way to do this, I have 2 messages, one with a start time and one with an end time. I'd like to trigger a response/set a global message if the start and end time are within the …

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## [How to handle multiple (1 to N) OPC-UA devices with same subscriptions](https://discourse.nodered.org/t/how-to-handle-multiple-1-to-n-opc-ua-devices-with-same-subscriptions/69366)

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**Author:** [@godofglow](https://discourse.nodered.org/u/godofglow)\
**Replies:** 1\
**Last updated:** [10 November 2022 18:33 UTC](https://discourse.nodered.org/t/how-to-handle-multiple-1-to-n-opc-ua-devices-with-same-subscriptions/69366 "2022-11-10T18:33:30Z")

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Hi, is there any possibility or example how to handle one to N OPC-UA servers with identical NodeID's and subscriptions as simple as possible? Without copying the same nodes N times? Just adding additional IP for the n…

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## [I2cdetect -y 1 problem](https://discourse.nodered.org/t/i2cdetect-y-1-problem/70276)

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**Author:** [@WBr](https://discourse.nodered.org/u/WBr)\
**Replies:** 7\
**Last updated:** [10 November 2022 14:40 UTC](https://discourse.nodered.org/t/i2cdetect-y-1-problem/70276 "2022-11-10T14:40:14Z")

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I have a problem with my i2c and some components When I use the command i2cdetect -y 1 i see 0 1 2 3 4 5 6 7 8 9 a b c d e f 00: -- -- -- -- -- -- -- -- -- -- -- -- -- 10: -- -- -- -- -- -…

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## [Convert negative to positive and positive to negative](https://discourse.nodered.org/t/convert-negative-to-positive-and-positive-to-negative/70372)

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**Author:** [@DaaD](https://discourse.nodered.org/u/DaaD)\
**Replies:** 3\
**Last updated:** [10 November 2022 13:08 UTC](https://discourse.nodered.org/t/convert-negative-to-positive-and-positive-to-negative/70372 "2022-11-10T13:08:10Z")

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Hello, I have a payload number i need to convert form positive to negative or vice versa. tried to wrap my head around the math javascript but my coding skills are (non existing) are letting me down... Any pointers wil…

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## [Error at enter in log of docker nodered](https://discourse.nodered.org/t/error-at-enter-in-log-of-docker-nodered/70348)

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**Author:** [@gedas07](https://discourse.nodered.org/u/gedas07)\
**Replies:** 0\
**Last updated:** [9 November 2022 19:27 UTC](https://discourse.nodered.org/t/error-at-enter-in-log-of-docker-nodered/70348 "2022-11-09T19:27:17Z")

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Hello when I have a 3.0.2 version of nodered in docker with project, when i try to enter in th log in portainer i have this message with this error

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## [adminAuth issues, Node Red does not start](https://discourse.nodered.org/t/adminauth-issues-node-red-does-not-start/16562)

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**Author:** [@BigWillow](https://discourse.nodered.org/u/BigWillow)\
**Replies:** 11\
**Last updated:** [10 November 2022 11:44 UTC](https://discourse.nodered.org/t/adminauth-issues-node-red-does-not-start/16562 "2022-11-10T11:44:26Z")

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Hi folks. Newbie here, so be gentle :slight\_smile: I want to use authentication for the editor (& UI) and I'm stuck. I have managed to create a mysettings.js file that is now finally working (long story, couldnt get …

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## [Node-red itself performance monitoring](https://discourse.nodered.org/t/node-red-itself-performance-monitoring/70235)

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**Author:** [@andhikasaja](https://discourse.nodered.org/u/andhikasaja)\
**Replies:** 5\
**Last updated:** [10 November 2022 11:41 UTC](https://discourse.nodered.org/t/node-red-itself-performance-monitoring/70235 "2022-11-10T11:41:56Z")

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Hi guys, this might be quite uncommon question. While we all using node red as a platform for monitoring other devices, but how to monitor the node red itself performance? Like the api request, memory or cpu usages and …

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## [Persistence across restarts in custom node](https://discourse.nodered.org/t/persistence-across-restarts-in-custom-node/70358)

<div class="topic-metadata">

**Author:** [@ebarrieau](https://discourse.nodered.org/u/ebarrieau)\
**Replies:** 1\
**Last updated:** [10 November 2022 11:35 UTC](https://discourse.nodered.org/t/persistence-across-restarts-in-custom-node/70358 "2022-11-10T11:35:13Z")

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I am creating a custom node which has some internal variables which I want to persist across restarts and I am trying to find an elegant way to do that in paradigm. The first time you load the node, you can set the value…

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## [Logging functions in ui template](https://discourse.nodered.org/t/logging-functions-in-ui-template/70388)

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**Author:** [@andro](https://discourse.nodered.org/u/andro)\
**Replies:** 2\
**Last updated:** [10 November 2022 11:11 UTC](https://discourse.nodered.org/t/logging-functions-in-ui-template/70388 "2022-11-10T11:11:33Z")

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Can you use logging functions such as console.log() and node.log() in the Angular in the ui template node? No output appears, but they work fine in the function node.

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## [Read email by nodered without inject](https://discourse.nodered.org/t/read-email-by-nodered-without-inject/70390)

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**Author:** [@sneha](https://discourse.nodered.org/u/sneha)\
**Replies:** 1\
**Last updated:** [10 November 2022 11:04 UTC](https://discourse.nodered.org/t/read-email-by-nodered-without-inject/70390 "2022-11-10T11:04:04Z")

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how can we read email as soon as it reaches to inbox instead of we running every fee seconds/minutes. we should not inject and also we should not run it on timer in your gmail when mail comes, it should be read in noder…

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## [Filter the Flows tree (Info panel) for "pinned" nodes](https://discourse.nodered.org/t/filter-the-flows-tree-info-panel-for-pinned-nodes/70391)

<div class="topic-metadata">

**Author:** [@evdheuvelUpl](https://discourse.nodered.org/u/evdheuvelUpl)\
**Replies:** 0\
**Last updated:** [10 November 2022 11:00 UTC](https://discourse.nodered.org/t/filter-the-flows-tree-info-panel-for-pinned-nodes/70391 "2022-11-10T11:00:32Z")

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As NR user I want filter the Flows view (Info tab) for “pinned” nodes so that I it is easier to navigate/jump to a strategic location in flow marked by a “pinned” node. Currently the Flows tree on the Info tab lists all…

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## [How to display coordinates on worldmap to track the position of UAV](https://discourse.nodered.org/t/how-to-display-coordinates-on-worldmap-to-track-the-position-of-uav/70386)

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**Author:** [@Scorpio\_93](https://discourse.nodered.org/u/Scorpio_93)\
**Replies:** 4\
**Last updated:** [10 November 2022 10:49 UTC](https://discourse.nodered.org/t/how-to-display-coordinates-on-worldmap-to-track-the-position-of-uav/70386 "2022-11-10T10:49:33Z")

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Hello all, I have been working on a project where I have to display/track the coordinates of a UAV on worldmap, so far I was able to display the icon with the MQTT Topic but I am stuck now as I get an error when I want …

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## [Catch node over all flow screens](https://discourse.nodered.org/t/catch-node-over-all-flow-screens/70385)

<div class="topic-metadata">

**Author:** [@Vorhees](https://discourse.nodered.org/u/Vorhees)\
**Replies:** 1\
**Last updated:** [10 November 2022 09:37 UTC](https://discourse.nodered.org/t/catch-node-over-all-flow-screens/70385 "2022-11-10T09:37:05Z")

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Is there a way for CATCH node to catches all errors on ALL flows (screens), not just the flow that you have catch node on? Currently my catch node catches errors fine, but just ones that happen on one of flows on same p…

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## [Weird thing happening with http request](https://discourse.nodered.org/t/weird-thing-happening-with-http-request/70260)

<div class="topic-metadata">

**Author:** [@makerstorage](https://discourse.nodered.org/u/makerstorage)\
**Replies:** 2\
**Last updated:** [10 November 2022 07:33 UTC](https://discourse.nodered.org/t/weird-thing-happening-with-http-request/70260 "2022-11-10T07:33:29Z")

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Hi Everybody, I have a http request node and It is working great with an inject node which sends the data to it. I am only setting msg.payload msg.direction and msg.lot. I am using them to create the header and the body…

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## [RS485 Modbus RTU slave to Modbus RTU master data converter](https://discourse.nodered.org/t/rs485-modbus-rtu-slave-to-modbus-rtu-master-data-converter/69577)

<div class="topic-metadata">

**Author:** [@Balded\_Chris](https://discourse.nodered.org/u/Balded_Chris)\
**Replies:** 8\
**Last updated:** [10 November 2022 07:25 UTC](https://discourse.nodered.org/t/rs485-modbus-rtu-slave-to-modbus-rtu-master-data-converter/69577 "2022-11-10T07:25:43Z")

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Hi there, I have a wish on a RS485, 9600 baud Modbus RTU communication Line between a DCS master and a Flowmeter slave with a Node-Red programmed Pi-unit in between to do a conversion of the integer data transfered from…

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## [Environment variable in dropdown fields](https://discourse.nodered.org/t/environment-variable-in-dropdown-fields/70144)

<div class="topic-metadata">

**Author:** [@plopp79](https://discourse.nodered.org/u/plopp79)\
**Replies:** 8\
**Last updated:** [10 November 2022 03:26 UTC](https://discourse.nodered.org/t/environment-variable-in-dropdown-fields/70144 "2022-11-10T03:26:21Z")

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Hello, I'm brand new to Node Red and have used fhem and iobroker before. But I'm really excited about the flexibility and possibilities that Node Red has to offer me. I've already tried around a bit and quickly reached…

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