# Latest

**URL:** https://discourse.nodered.org/latest.md?page=380

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

**Page:** 381

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## [Alert Sudden Rise in Temperature](https://discourse.nodered.org/t/alert-sudden-rise-in-temperature/76074)

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**Author:** [@jgvary](https://discourse.nodered.org/u/jgvary)\
**Replies:** 5\
**Last updated:** [3 March 2023 22:50 UTC](https://discourse.nodered.org/t/alert-sudden-rise-in-temperature/76074 "2023-03-03T22:50:48Z")

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I am trying to create a flow that will alert me of a sudden rise in temperature for my temperature sensors around the house. He is what I have currently and suggestions or advice? \[{"id":"405f829e0a28b82e","type":"a…

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## [Template Svg Graphic](https://discourse.nodered.org/t/template-svg-graphic/75770)

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**Author:** [@ninaaa](https://discourse.nodered.org/u/ninaaa)\
**Replies:** 13\
**Last updated:** [9 March 2023 21:50 UTC](https://discourse.nodered.org/t/template-svg-graphic/75770 "2023-03-09T21:50:11Z")

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Hello! Since I've been searching for days without success, I'm asking for help. I would like to install a button and a digital display in an SVG image. The button should switch something or display something digitally. …

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## [Msg.payload : undefined](https://discourse.nodered.org/t/msg-payload-undefined/76359)

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**Author:** [@HilalAbuSaleh](https://discourse.nodered.org/u/HilalAbuSaleh)\
**Replies:** 4\
**Last updated:** [9 March 2023 20:17 UTC](https://discourse.nodered.org/t/msg-payload-undefined/76359 "2023-03-09T20:17:53Z")

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Hello, I have Hex-string which i am receiving from a Topic and converting in a function to binary then splitting the bits as to see in the function below and then sending the outputs at 8 different LEDS. By receiving 0…

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## [Handling data from multiple sliders](https://discourse.nodered.org/t/handling-data-from-multiple-sliders/76358)

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**Author:** [@rchandrashekar53](https://discourse.nodered.org/u/rchandrashekar53)\
**Replies:** 1\
**Last updated:** [9 March 2023 18:50 UTC](https://discourse.nodered.org/t/handling-data-from-multiple-sliders/76358 "2023-03-09T18:50:56Z")

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Hi, I have some input sliders which are working great. My ask is to get data from these individual sliders and build a JSON payload. Attached is a sample schematic of my data input How can i get data from these slide…

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## [Node Red Dont work anymore pls Help](https://discourse.nodered.org/t/node-red-dont-work-anymore-pls-help/76348)

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**Author:** [@blackops](https://discourse.nodered.org/u/blackops)\
**Replies:** 15\
**Last updated:** [9 March 2023 17:00 UTC](https://discourse.nodered.org/t/node-red-dont-work-anymore-pls-help/76348 "2023-03-09T17:00:46Z")

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My Note Red Web interface dont work. canpi@canpi:~ $ node-red-log 9 Mar 15:07:48 - \[info\] Node-RED version: v3.0.2 9 Mar 15:07:48 - \[info\] Node.js version: v16.19.1 9 Mar 15:07:48 - \[info\] Linux 5.15.84-v7+ arm LE 9…

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## [Setup a Config to open blinds and block timer when there is heavy wind](https://discourse.nodered.org/t/setup-a-config-to-open-blinds-and-block-timer-when-there-is-heavy-wind/76350)

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**Author:** [@ebnerjoh](https://discourse.nodered.org/u/ebnerjoh)\
**Replies:** 5\
**Last updated:** [9 March 2023 16:53 UTC](https://discourse.nodered.org/t/setup-a-config-to-open-blinds-and-block-timer-when-there-is-heavy-wind/76350 "2023-03-09T16:53:48Z")

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Hi, I have electrical blinds and I am living in a rural environment. When we have heavy stroms the risk is high for a power outage. I have a generator, but my blinds are not reacting when I supply them with the generato…

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## [3 switches lock](https://discourse.nodered.org/t/3-switches-lock/76354)

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**Author:** [@JAY](https://discourse.nodered.org/u/JAY)\
**Replies:** 5\
**Last updated:** [9 March 2023 16:30 UTC](https://discourse.nodered.org/t/3-switches-lock/76354 "2023-03-09T16:30:46Z")

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Hi guys,I want to make 3 switches in which if switch 1 and switch 2 are in true its output will be true,if one of the switch is false the other switch(output) is false.The output switch can only be in true if both of swi…

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## [Flow context \[object Object\] while it exists?](https://discourse.nodered.org/t/flow-context-object-object-while-it-exists/76339)

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**Author:** [@bakman2](https://discourse.nodered.org/u/bakman2)\
**Replies:** 9\
**Last updated:** [9 March 2023 15:58 UTC](https://discourse.nodered.org/t/flow-context-object-object-while-it-exists/76339 "2023-03-09T15:58:33Z")

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I am confused, flow context says: But injecting flow.browser produces: It works, so that is great, but why is the context tab not parsing it ?

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## [Referring to Json object problem](https://discourse.nodered.org/t/referring-to-json-object-problem/76276)

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**Author:** [@Vilnis\_R](https://discourse.nodered.org/u/Vilnis_R)\
**Replies:** 4\
**Last updated:** [9 March 2023 15:14 UTC](https://discourse.nodered.org/t/referring-to-json-object-problem/76276 "2023-03-09T15:14:32Z")

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Hi, I have problem with javascript referring to particular keys. I need to rearrange incoming Json to other Json layout however debug throws me an error: "TypeError: Cannot read property 'RP' of undefined". My guess tha…

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## [Zwave js nodered](https://discourse.nodered.org/t/zwave-js-nodered/76337)

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**Author:** [@daak](https://discourse.nodered.org/u/daak)\
**Replies:** 13\
**Last updated:** [9 March 2023 15:12 UTC](https://discourse.nodered.org/t/zwave-js-nodered/76337 "2023-03-09T15:12:07Z")

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hello, I create a program in NODE-RED (zwave js) to pilote my air conditionner I filled the IR code but the remotec zxt 600 don't receive the signals from nodered. Thank you

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## [Can the orange pi zero with 512MB RAM run node-red?](https://discourse.nodered.org/t/can-the-orange-pi-zero-with-512mb-ram-run-node-red/76346)

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**Author:** [@ReinJah](https://discourse.nodered.org/u/ReinJah)\
**Replies:** 2\
**Last updated:** [9 March 2023 14:27 UTC](https://discourse.nodered.org/t/can-the-orange-pi-zero-with-512mb-ram-run-node-red/76346 "2023-03-09T14:27:07Z")

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For a project, I want to use an orange pi zero 512MB to recieve data from a scale over serial USB. For this I want to use node-red. The flow itself is gonna be pretty simple, just send a string over USB and get a value b…

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## [Node-RED Ask Me Anything session on March 9](https://discourse.nodered.org/t/node-red-ask-me-anything-session-on-march-9/75815)

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**Author:** [@iskerrett](https://discourse.nodered.org/u/iskerrett)\
**Replies:** 7\
**Last updated:** [9 March 2023 13:58 UTC](https://discourse.nodered.org/t/node-red-ask-me-anything-session-on-march-9/75815 "2023-03-09T13:58:37Z")

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Our first Node-RED AMA was a big success. Lots of great questions and engagement from the community. We have decided to make the AMA sessions a monthly event so the next Node-RED AMA will be March 9. Nick O'Leary, co-cr…

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## [I need help to add an array to an object](https://discourse.nodered.org/t/i-need-help-to-add-an-array-to-an-object/76297)

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**Author:** [@blackops](https://discourse.nodered.org/u/blackops)\
**Replies:** 5\
**Last updated:** [9 March 2023 12:18 UTC](https://discourse.nodered.org/t/i-need-help-to-add-an-array-to-an-object/76297 "2023-03-09T12:18:14Z")

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Hello i hope somebody can help me. My Payload looks now like that I need to change it like that

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## [Cannot install any palette into node-red](https://discourse.nodered.org/t/cannot-install-any-palette-into-node-red/76333)

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**Author:** [@hoffimarc](https://discourse.nodered.org/u/hoffimarc)\
**Replies:** 10\
**Last updated:** [9 March 2023 12:03 UTC](https://discourse.nodered.org/t/cannot-install-any-palette-into-node-red/76333 "2023-03-09T12:03:14Z")

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Hello everybody. I have installed node red on my macbook air (ARM) in the latest version. when i want to install a addon palette, it does not work. it does not mind if i install it directly via "palette verwalten - In…

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## [MQTT to cloud server](https://discourse.nodered.org/t/mqtt-to-cloud-server/75741)

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**Author:** [@yawstick1](https://discourse.nodered.org/u/yawstick1)\
**Replies:** 15\
**Last updated:** [9 March 2023 11:30 UTC](https://discourse.nodered.org/t/mqtt-to-cloud-server/75741 "2023-03-09T11:30:16Z")

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I have node-red running on a raspberry pi and about a half dozen esp32 devices with temp sensors and a couple acting as remote IO.... that has been working for quite a while. I just created a sever on digital ocean also …

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## [String with 2 points from CSV to number](https://discourse.nodered.org/t/string-with-2-points-from-csv-to-number/76292)

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**Author:** [@MA.ING](https://discourse.nodered.org/u/MA.ING)\
**Replies:** 5\
**Last updated:** [9 March 2023 11:25 UTC](https://discourse.nodered.org/t/string-with-2-points-from-csv-to-number/76292 "2023-03-09T11:25:01Z")

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Good morning, I have a problem with one value from csv, when i get this value i recive a string with 2 points (Ej: 1.480.200) and cant convert into a number. I need convert this string in a number and divide this value…

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## [Chart multiple lines](https://discourse.nodered.org/t/chart-multiple-lines/76338)

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**Author:** [@Sekuti](https://discourse.nodered.org/u/Sekuti)\
**Replies:** 2\
**Last updated:** [9 March 2023 10:49 UTC](https://discourse.nodered.org/t/chart-multiple-lines/76338 "2023-03-09T10:49:47Z")

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Hello again. I am trying to read data from csv file and represent them in chart. I took one example from here and modified it . It works fine but only with one line. Can someone help me add additional three lines. Code …

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## [Firebase can't send simply msg.payload](https://discourse.nodered.org/t/firebase-cant-send-simply-msg-payload/76316)

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**Author:** [@pepebiskup1](https://discourse.nodered.org/u/pepebiskup1)\
**Replies:** 8\
**Last updated:** [9 March 2023 10:29 UTC](https://discourse.nodered.org/t/firebase-cant-send-simply-msg-payload/76316 "2023-03-09T10:29:15Z")

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Hello. I'm trying to send a simple msg. payload but it's not working. What should I write in the data field? When I will write just the number it can be sent and it's working.

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## [Node-red Switch node counter timestamp. How can I start and stop output](https://discourse.nodered.org/t/node-red-switch-node-counter-timestamp-how-can-i-start-and-stop-output/76270)

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**Author:** [@GoldD](https://discourse.nodered.org/u/GoldD)\
**Replies:** 4\
**Last updated:** [9 March 2023 10:08 UTC](https://discourse.nodered.org/t/node-red-switch-node-counter-timestamp-how-can-i-start-and-stop-output/76270 "2023-03-09T10:08:57Z")

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Create timestamp repeatedly on the Inject node When Switch node is on The counter starts at 1 to 20, If the counter value exceeds 20, counter from 1 again. debug node outputs timestamp Output up to 20, Until the Switch…

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## [Multiple temperatures controlling one fan](https://discourse.nodered.org/t/multiple-temperatures-controlling-one-fan/76226)

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**Author:** [@HolgiB](https://discourse.nodered.org/u/HolgiB)\
**Replies:** 10\
**Last updated:** [9 March 2023 08:22 UTC](https://discourse.nodered.org/t/multiple-temperatures-controlling-one-fan/76226 "2023-03-09T08:22:35Z")

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Hey there, hopefully I posting in the right place. :thinking: I have searched around and experimented a bit but am still struggeling with a rather simple task. I use Node-RED plus some ESPs with DS18 temp sensors plus …

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## [Context scope and complex variables possible?](https://discourse.nodered.org/t/context-scope-and-complex-variables-possible/76335)

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**Author:** [@dakky](https://discourse.nodered.org/u/dakky)\
**Replies:** 1\
**Last updated:** [9 March 2023 06:49 UTC](https://discourse.nodered.org/t/context-scope-and-complex-variables-possible/76335 "2023-03-09T06:49:59Z")

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Hello I want to store a javascript object in the flow context scope to keep a state over different runs of a flow Example: { "lastState": { "device1": timestamp, "device2": timestamp, } } Something like …

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## [Change date format](https://discourse.nodered.org/t/change-date-format/76212)

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**Author:** [@dineshaj](https://discourse.nodered.org/u/dineshaj)\
**Replies:** 5\
**Last updated:** [9 March 2023 06:03 UTC](https://discourse.nodered.org/t/change-date-format/76212 "2023-03-09T06:03:23Z")

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Hi, I have this function let day = new Date("2005-03-01"); //YYYY-MM-DD var end = new Date("2005-03-03"); while(day \<= end){ startDay = day.setDate(day.getDate() - 1); endDay = day.setDate(day.getDate() + 1); …

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## [Error rc=226, can't install any nodes. EROFS?](https://discourse.nodered.org/t/error-rc-226-cant-install-any-nodes-erofs/76203)

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**Author:** [@CoryD](https://discourse.nodered.org/u/CoryD)\
**Replies:** 4\
**Last updated:** [9 March 2023 04:32 UTC](https://discourse.nodered.org/t/error-rc-226-cant-install-any-nodes-erofs/76203 "2023-03-09T04:32:19Z")

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Hi, I'm getting this error when trying to install any nodes: 2023-03-06T23:19:39.233Z Install : node-red-contrib-timerswitch 1.4.0 2023-03-06T23:19:29.415Z npm install --no-audit --no-update-notifier --no-fund --save -…

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## [How to capture focus and blur events on a typedInput element](https://discourse.nodered.org/t/how-to-capture-focus-and-blur-events-on-a-typedinput-element/76190)

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**Author:** [@CanyonCasa](https://discourse.nodered.org/u/CanyonCasa)\
**Replies:** 4\
**Last updated:** [9 March 2023 02:43 UTC](https://discourse.nodered.org/t/how-to-capture-focus-and-blur-events-on-a-typedinput-element/76190 "2023-03-09T02:43:57Z")

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ref: Node 18.12.1 and Node-red 3.0.1 I can't seem to capture the onfocus and onblur events for a typedInput in the node edit dialog. I use this to show/hide a tip field at the bottom of the form. It works for text input…

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## [Migrate from ui-template to ui-builder](https://discourse.nodered.org/t/migrate-from-ui-template-to-ui-builder/76273)

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**Author:** [@vinistois](https://discourse.nodered.org/u/vinistois)\
**Replies:** 8\
**Last updated:** [9 March 2023 02:29 UTC](https://discourse.nodered.org/t/migrate-from-ui-template-to-ui-builder/76273 "2023-03-09T02:29:19Z")

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I'm building a dynamic dashboard. The result I want is a grid of cards, like the bootstrap grid system. I'm currently doing this with a single template node, to which I'm providing a msg.template. I include a link to bo…

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## [Nodered/uibuilder reading json files](https://discourse.nodered.org/t/nodered-uibuilder-reading-json-files/76325)

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**Author:** [@gNeandr](https://discourse.nodered.org/u/gNeandr)\
**Replies:** 4\
**Last updated:** [9 March 2023 00:11 UTC](https://discourse.nodered.org/t/nodered-uibuilder-reading-json-files/76325 "2023-03-09T00:11:04Z")

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uibuilder works well to migrate my older project to NR/uib. Problem (atm) is to get/read json file(s) to use that data in index.js. (And yes, I need to read dircetly from rpi files!) Followed @knolleary advice with /h…

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## [Number in Jsonata](https://discourse.nodered.org/t/number-in-jsonata/76289)

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**Author:** [@Becker](https://discourse.nodered.org/u/Becker)\
**Replies:** 7\
**Last updated:** [8 March 2023 22:21 UTC](https://discourse.nodered.org/t/number-in-jsonata/76289 "2023-03-08T22:21:36Z")

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Hi, I just want to have the actual hour as a number. So I´ve build: \[ { "id": "9c8c4170df54250b", "type": "inject", "z": "7b74e2db318add18", "name": "Zeitstempel", "props": \[…

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## [Array in a bar graph over a 24 hour period](https://discourse.nodered.org/t/array-in-a-bar-graph-over-a-24-hour-period/76323)

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**Author:** [@Duncan](https://discourse.nodered.org/u/Duncan)\
**Replies:** 2\
**Last updated:** [8 March 2023 21:44 UTC](https://discourse.nodered.org/t/array-in-a-bar-graph-over-a-24-hour-period/76323 "2023-03-08T21:44:51Z")

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Hi all, I am trying to display an array in a bar graph over a 24 hour period. The array has 2 objects, time (hour) and price. how do i go about this? thanks ! Here is the output from my function node: msg : Object ob…

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## [Save sizes (widget and group) horizontal and vertical](https://discourse.nodered.org/t/save-sizes-widget-and-group-horizontal-and-vertical/76202)

<div class="topic-metadata">

**Author:** [@MecatronicaMADE](https://discourse.nodered.org/u/MecatronicaMADE)\
**Replies:** 5\
**Last updated:** [8 March 2023 21:37 UTC](https://discourse.nodered.org/t/save-sizes-widget-and-group-horizontal-and-vertical/76202 "2023-03-08T21:37:36Z")

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Hi all, I have been developing a small example with the dashboard, and I have been modifying the parameters of Widget Size, Widget Spacing, Group Padding and Group Spacing of the SITE tab (attached image), but when I exp…

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## [Return output to parent in child\_process](https://discourse.nodered.org/t/return-output-to-parent-in-child-process/76304)

<div class="topic-metadata">

**Author:** [@denissanga](https://discourse.nodered.org/u/denissanga)\
**Replies:** 2\
**Last updated:** [8 March 2023 20:38 UTC](https://discourse.nodered.org/t/return-output-to-parent-in-child-process/76304 "2023-03-08T20:38:03Z")

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hi all, I'm writing a function with chil\_process.exec and I would return a value to parent var dir = flow.get("mntFolderName") let checkOut try { var mntCheckOutput = exec('mountpoint ' + dir, (error, stdout) =\> …

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