# Latest

**URL:** https://discourse.nodered.org/latest.md?page=377

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

**Page:** 378

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## ["i2c out" - node: how to configure to send out values like 0x3200, 0x0100 etc.?](https://discourse.nodered.org/t/i2c-out-node-how-to-configure-to-send-out-values-like-0x3200-0x0100-etc/76525)

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**Author:** [@Piet31](https://discourse.nodered.org/u/Piet31)\
**Replies:** 2\
**Last updated:** [14 March 2023 14:18 UTC](https://discourse.nodered.org/t/i2c-out-node-how-to-configure-to-send-out-values-like-0x3200-0x0100-etc/76525 "2023-03-14T14:18:28Z")

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Hi, I have a working communication between a Raspi 4B and a triac module over I2C. For setting the frequency of the triac module e.g. to 50Hz (0x32) I have figured out that I have to write to register 0x05 the value 0x…

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## [Seeing the node-red logs when running node-red-node-test-helper](https://discourse.nodered.org/t/seeing-the-node-red-logs-when-running-node-red-node-test-helper/14397)

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**Author:** [@kolban](https://discourse.nodered.org/u/kolban)\
**Replies:** 4\
**Last updated:** [14 March 2023 12:59 UTC](https://discourse.nodered.org/t/seeing-the-node-red-logs-when-running-node-red-node-test-helper/14397 "2023-03-14T12:59:34Z")

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As I build out a new set of contributed node implementations for Node-RED, I find myself using node-red-node-test-helper for the first time. I'm enjoying the function and all is well for the most part. I am gaining ski…

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## [Getting single value from a data string](https://discourse.nodered.org/t/getting-single-value-from-a-data-string/76551)

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**Author:** [@MrBisgaard](https://discourse.nodered.org/u/MrBisgaard)\
**Replies:** 1\
**Last updated:** [14 March 2023 11:43 UTC](https://discourse.nodered.org/t/getting-single-value-from-a-data-string/76551 "2023-03-14T11:43:50Z")

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i am having this datastring "{"type":"FeatureCollection","features":\[{"geometry":{"coordinates":\[8.2225,56.7053\],"type":"Point"},"id":"8fa16b3a-e601-f18b-87ed-5b7cbb8d77e2","type":"Feature","properties":{"created":"2023…

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## [Error installing HX711 node](https://discourse.nodered.org/t/error-installing-hx711-node/76483)

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**Author:** [@Blubber](https://discourse.nodered.org/u/Blubber)\
**Replies:** 4\
**Last updated:** [14 March 2023 11:22 UTC](https://discourse.nodered.org/t/error-installing-hx711-node/76483 "2023-03-14T11:22:06Z")

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Hi, I am quite inexperienced in working with Node-RED. I want to build a scale with a Raspberry Pi. The installation of a HX711 node is stopped by an error. Error log2023-03-12T18:53:49.224Z Installieren : node-red-c…

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## [Get time and date closest to current time](https://discourse.nodered.org/t/get-time-and-date-closest-to-current-time/76545)

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**Author:** [@Belgium1](https://discourse.nodered.org/u/Belgium1)\
**Replies:** 2\
**Last updated:** [14 March 2023 10:00 UTC](https://discourse.nodered.org/t/get-time-and-date-closest-to-current-time/76545 "2023-03-14T10:00:51Z")

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I am using Node-red to make a program for home automation. I take energy prices from the norpool api+ and format these values to just get the timestamp and also the prices per hour. I get these values for every hour o…

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## [Monitoring shelly pro 4 PM](https://discourse.nodered.org/t/monitoring-shelly-pro-4-pm/72724)

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**Author:** [@juntiedt](https://discourse.nodered.org/u/juntiedt)\
**Replies:** 6\
**Last updated:** [14 March 2023 10:00 UTC](https://discourse.nodered.org/t/monitoring-shelly-pro-4-pm/72724 "2023-03-14T10:00:51Z")

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I am using the shelly pro 4 PM to switch valves of my floor heating on and off. Switching is done per http request but monitoring uses MQTT. That’s fine unless you want to know your daily energy usage. Therefore, you mu…

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## [Debouncer subflow](https://discourse.nodered.org/t/debouncer-subflow/76454)

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**Author:** [@alanmasu](https://discourse.nodered.org/u/alanmasu)\
**Replies:** 24\
**Last updated:** [13 March 2023 13:35 UTC](https://discourse.nodered.org/t/debouncer-subflow/76454 "2023-03-13T13:35:56Z")

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Hi everyone, I'm developing a subflow that gets the stable version of a message in imput; in my case I've got signals of connection to various IoT devices (implemented by me with ESP32 or similar) and I would like to se…

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## [How to change the interval Value of configurable interval node?](https://discourse.nodered.org/t/how-to-change-the-interval-value-of-configurable-interval-node/76502)

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**Author:** [@GoldD](https://discourse.nodered.org/u/GoldD)\
**Replies:** 1\
**Last updated:** [14 March 2023 08:16 UTC](https://discourse.nodered.org/t/how-to-change-the-interval-value-of-configurable-interval-node/76502 "2023-03-14T08:16:35Z")

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I want to change the interval value of the configurable interval node on /ui/. Help me. sorry to my English

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## [Standard trigger node source code?](https://discourse.nodered.org/t/standard-trigger-node-source-code/76534)

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**Author:** [@znetsixe](https://discourse.nodered.org/u/znetsixe)\
**Replies:** 2\
**Last updated:** [14 March 2023 08:16 UTC](https://discourse.nodered.org/t/standard-trigger-node-source-code/76534 "2023-03-14T08:16:03Z")

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Hi, I wanted to find a good example of a dropdown box that on selection changes the input fields. The standard trigger node does such a thing in node red. I cant seem to find the source code of this node however? Ive b…

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## [How to change the value of a value rule inside a switch node from the UI](https://discourse.nodered.org/t/how-to-change-the-value-of-a-value-rule-inside-a-switch-node-from-the-ui/76535)

<div class="topic-metadata">

**Author:** [@GoldD](https://discourse.nodered.org/u/GoldD)\
**Replies:** 1\
**Last updated:** [14 March 2023 06:49 UTC](https://discourse.nodered.org/t/how-to-change-the-value-of-a-value-rule-inside-a-switch-node-from-the-ui/76535 "2023-03-14T06:49:12Z")

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I want to change 20 in the picture from ui. s witch node

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## [Suggestion for a CRUD using the dasboard node](https://discourse.nodered.org/t/suggestion-for-a-crud-using-the-dasboard-node/76531)

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**Author:** [@allacmc](https://discourse.nodered.org/u/allacmc)\
**Replies:** 1\
**Last updated:** [14 March 2023 05:00 UTC](https://discourse.nodered.org/t/suggestion-for-a-crud-using-the-dasboard-node/76531 "2023-03-14T05:00:23Z")

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Does anyone have any suggestions on which way to go to perform an update on a table. Considering a query performed in DB with related tables. The code I developed already has read(table), insert and delete working fine.…

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## [UI dropdown - set preselected option](https://discourse.nodered.org/t/ui-dropdown-set-preselected-option/8501)

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**Author:** [@abra](https://discourse.nodered.org/u/abra)\
**Replies:** 16\
**Last updated:** [14 March 2023 04:02 UTC](https://discourse.nodered.org/t/ui-dropdown-set-preselected-option/8501 "2023-03-14T04:02:18Z")

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Is it possible to set an option for a dropdown (I mean as default, before the user interaction) ? Would be also possible to put a checkmark to mark the actually selected option, when clicking on the dropdown and showing …

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## [Node-RED Debug Sidebar Console Printing Colored Text](https://discourse.nodered.org/t/node-red-debug-sidebar-console-printing-colored-text/76494)

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**Author:** [@aisyahshamsaimun](https://discourse.nodered.org/u/aisyahshamsaimun)\
**Replies:** 5\
**Last updated:** [14 March 2023 02:48 UTC](https://discourse.nodered.org/t/node-red-debug-sidebar-console-printing-colored-text/76494 "2023-03-14T02:48:38Z")

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Hello, I am looking for a way for the Node-RED debug sidebar tab to be able to print colored text instead of in code form as shown in the picture below. These message payloads are coming from a serial connection bet…

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## [Node Red Chart node jumps to current date/time when it should not do so](https://discourse.nodered.org/t/node-red-chart-node-jumps-to-current-date-time-when-it-should-not-do-so/76529)

<div class="topic-metadata">

**Author:** [@daled](https://discourse.nodered.org/u/daled)\
**Replies:** 1\
**Last updated:** [14 March 2023 01:44 UTC](https://discourse.nodered.org/t/node-red-chart-node-jumps-to-current-date-time-when-it-should-not-do-so/76529 "2023-03-14T01:44:31Z")

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I have historical data (say a day or two of data from two weeks ago) that I want to show in a node-red time series chart. I successfully read the data in and send it to the chart node. I see the chart being generated and…

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## [Fixed size of node red ui template text box](https://discourse.nodered.org/t/fixed-size-of-node-red-ui-template-text-box/76530)

<div class="topic-metadata">

**Author:** [@nightmareside15](https://discourse.nodered.org/u/nightmareside15)\
**Replies:** 0\
**Last updated:** [14 March 2023 01:13 UTC](https://discourse.nodered.org/t/fixed-size-of-node-red-ui-template-text-box/76530 "2023-03-14T01:13:35Z")

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Hello. Is there any way to make the text box on template ui into fixed size no matter how much I put it? The current text box is getting smaller as soon as the ui template reach the end. I want it to be the same as radio…

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## [Node.error - catch](https://discourse.nodered.org/t/node-error-catch/76526)

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**Author:** [@dpatel2016](https://discourse.nodered.org/u/dpatel2016)\
**Replies:** 2\
**Last updated:** [13 March 2023 23:06 UTC](https://discourse.nodered.org/t/node-error-catch/76526 "2023-03-13T23:06:54Z")

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I am using a node red pccc library and it has an error that I want to read. How do I read the node.error(RED.\_("pccc.error.badvalues")) in the editor?

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## [S7 Endpoint configuration](https://discourse.nodered.org/t/s7-endpoint-configuration/76496)

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**Author:** [@ameer.ghoniem85](https://discourse.nodered.org/u/ameer.ghoniem85)\
**Replies:** 4\
**Last updated:** [13 March 2023 22:24 UTC](https://discourse.nodered.org/t/s7-endpoint-configuration/76496 "2023-03-13T22:24:04Z")

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Hi there, i need to set the variables of the s7 endpoint node dynamically, i mean from out side the node i have an idea to connect to oracle database to fetch the following Data: PLC IP, Rack, Slot and also the variab…

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## [How do I?: Button triggers text (number) field value to be sent in payload](https://discourse.nodered.org/t/how-do-i-button-triggers-text-number-field-value-to-be-sent-in-payload/76490)

<div class="topic-metadata">

**Author:** [@xabra](https://discourse.nodered.org/u/xabra)\
**Replies:** 7\
**Last updated:** [13 March 2023 22:06 UTC](https://discourse.nodered.org/t/how-do-i-button-triggers-text-number-field-value-to-be-sent-in-payload/76490 "2023-03-13T22:06:08Z")

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Running NR on Windows 10/Chrome Trying to have a button trigger the output of numeric text input field. (actually I want data from two text fields combined in a json payload and output when the button is pressed, but I …

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## [Validation property from other input field?](https://discourse.nodered.org/t/validation-property-from-other-input-field/76518)

<div class="topic-metadata">

**Author:** [@znetsixe](https://discourse.nodered.org/u/znetsixe)\
**Replies:** 5\
**Last updated:** [13 March 2023 20:36 UTC](https://discourse.nodered.org/t/validation-property-from-other-input-field/76518 "2023-03-13T20:36:56Z")

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I know there are other threads on this topics but cant seem to find my precise question so fast so here it goes : I want to use the validation function to use 2 of the users input and check if minimum is bigger than max…

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## [Delete the decimals](https://discourse.nodered.org/t/delete-the-decimals/76480)

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**Author:** [@MaxSchaaper](https://discourse.nodered.org/u/MaxSchaaper)\
**Replies:** 4\
**Last updated:** [13 March 2023 18:24 UTC](https://discourse.nodered.org/t/delete-the-decimals/76480 "2023-03-13T18:24:16Z")

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Hello, I want to get rid of the decimals. My function node is like this: gas = parseFloat(msg.payload.svalue1); msg.payload = gas; msg.topic = "gas"; return msg; The outcome data is like: gas : msg.payload : number …

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## [Light control via switch](https://discourse.nodered.org/t/light-control-via-switch/76351)

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**Author:** [@ChrisF](https://discourse.nodered.org/u/ChrisF)\
**Replies:** 4\
**Last updated:** [13 March 2023 18:01 UTC](https://discourse.nodered.org/t/light-control-via-switch/76351 "2023-03-13T18:01:48Z")

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Hello dear Node-Red Community, I would like to dim some LED strips using a philips hue button. The whole thing is connected via zigbee2mqtt. about the button: short button press = ON or OFF long button press = STEP U…

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## [Synchronizing dashboard switch](https://discourse.nodered.org/t/synchronizing-dashboard-switch/76478)

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**Author:** [@jw\_te\_r](https://discourse.nodered.org/u/jw_te_r)\
**Replies:** 7\
**Last updated:** [13 March 2023 17:24 UTC](https://discourse.nodered.org/t/synchronizing-dashboard-switch/76478 "2023-03-13T17:24:55Z")

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Hi all, I have been struggling for a while now with the dashboard switch node. Several forum topics seem to address similar issues, but I couldn't find a solution to my problem. I have a continuously adjustable duct f…

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## [How to do that the Worldmap and marker of this stays indefinitely, and the Worldmap can sees in other devices](https://discourse.nodered.org/t/how-to-do-that-the-worldmap-and-marker-of-this-stays-indefinitely-and-the-worldmap-can-sees-in-other-devices/76250)

<div class="topic-metadata">

**Author:** [@itzjujo092](https://discourse.nodered.org/u/itzjujo092)\
**Replies:** 11\
**Last updated:** [13 March 2023 15:05 UTC](https://discourse.nodered.org/t/how-to-do-that-the-worldmap-and-marker-of-this-stays-indefinitely-and-the-worldmap-can-sees-in-other-devices/76250 "2023-03-13T15:05:59Z")

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Hello! How can i do in Worldmap node to see this in Other devices? And the second one, How can i make that Marker of this Stays Indefinitely and can looks in other devices? My function node to make the marker is this: …

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## [Hide Node-RED console on Windows](https://discourse.nodered.org/t/hide-node-red-console-on-windows/76293)

<div class="topic-metadata">

**Author:** [@raullink](https://discourse.nodered.org/u/raullink)\
**Replies:** 7\
**Last updated:** [13 March 2023 16:31 UTC](https://discourse.nodered.org/t/hide-node-red-console-on-windows/76293 "2023-03-13T16:31:27Z")

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Hi everyone. The other topic has closed with no answer, and I am opening again because I got the same problem. I use node-red in Linux with no problem. The auto-boot using the official install script works flawless. B…

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## [How can I make the projects on running under Docker?](https://discourse.nodered.org/t/how-can-i-make-the-projects-on-running-under-docker/76340)

<div class="topic-metadata">

**Author:** [@GoldD](https://discourse.nodered.org/u/GoldD)\
**Replies:** 3\
**Last updated:** [13 March 2023 16:05 UTC](https://discourse.nodered.org/t/how-can-i-make-the-projects-on-running-under-docker/76340 "2023-03-13T16:05:36Z")

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How can I make projects in Running Node-red under Docker I aleady make projects Running Node-red on locally computer I'm sorry my Englilsh.

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## [Backup and reset in educational context](https://discourse.nodered.org/t/backup-and-reset-in-educational-context/75189)

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**Author:** [@brendonhatcher](https://discourse.nodered.org/u/brendonhatcher)\
**Replies:** 3\
**Last updated:** [13 March 2023 15:26 UTC](https://discourse.nodered.org/t/backup-and-reset-in-educational-context/75189 "2023-03-13T15:26:32Z")

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Hi. I want to use Node-RED within a Code Club context to teach IoT etc. I have a number of activities with associated resources, including flows stored on each Raspberry Pi. Participants will update the flows during t…

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## [Email to be downloaded on click of link](https://discourse.nodered.org/t/email-to-be-downloaded-on-click-of-link/76514)

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**Author:** [@NeetaJ](https://discourse.nodered.org/u/NeetaJ)\
**Replies:** 0\
**Last updated:** [13 March 2023 14:13 UTC](https://discourse.nodered.org/t/email-to-be-downloaded-on-click-of-link/76514 "2023-03-13T14:13:20Z")

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Hi, I am sending email to outlook id on click of a button and on successful send, i am collecting and displaying the information like Sender, Recipient, and attach the email as a link to Download. when i click on do…

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## [Python Output - Blinking Seperate Neopixels](https://discourse.nodered.org/t/python-output-blinking-seperate-neopixels/76477)

<div class="topic-metadata">

**Author:** [@dandspach](https://discourse.nodered.org/u/dandspach)\
**Replies:** 5\
**Last updated:** [13 March 2023 12:08 UTC](https://discourse.nodered.org/t/python-output-blinking-seperate-neopixels/76477 "2023-03-13T12:08:01Z")

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problem: how to code Python in Node Red output to blink separate Neopixels I have the following output to a .py file, which is run by a crontab at certain intervals. Currently, lighting works perfect and all leds are …

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## [onChange function triggered by msgs with \_ui property](https://discourse.nodered.org/t/onchange-function-triggered-by-msgs-with-ui-property/76491)

<div class="topic-metadata">

**Author:** [@Sean-McG](https://discourse.nodered.org/u/Sean-McG)\
**Replies:** 3\
**Last updated:** [13 March 2023 11:52 UTC](https://discourse.nodered.org/t/onchange-function-triggered-by-msgs-with-ui-property/76491 "2023-03-13T11:52:42Z")

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Not sure if this is working as intended, or I am missing something ? Input messages containing a msg.\_ui property will not trigger the client libraries on-change method. As you can see in the first line there is a \_ui …

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## [After upgrade to v3, json errors in log](https://discourse.nodered.org/t/after-upgrade-to-v3-json-errors-in-log/76464)

<div class="topic-metadata">

**Author:** [@SeRiusRod](https://discourse.nodered.org/u/SeRiusRod)\
**Replies:** 17\
**Last updated:** [13 March 2023 11:18 UTC](https://discourse.nodered.org/t/after-upgrade-to-v3-json-errors-in-log/76464 "2023-03-13T11:18:28Z")

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Today I upgraded my node-red main install from v2.2.2 to v3.0.2. As I didn't have success by updating the existing install, I decided to bring up a new one. So I created a new lxc container with the new version. Edited…

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