# Latest

**URL:** https://discourse.nodered.org/latest.md?page=457

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

**Page:** 458

---

## [User Input : node-red-contrib-zwave-js](https://discourse.nodered.org/t/user-input-node-red-contrib-zwave-js/70890)

<div class="topic-metadata">

**Author:** [@marcus-j-davies](https://discourse.nodered.org/u/marcus-j-davies)\
**Replies:** 0\
**Last updated:** [19 November 2022 21:00 UTC](https://discourse.nodered.org/t/user-input-node-red-contrib-zwave-js/70890 "2022-11-19T21:00:14Z")

</div>

Hello, The purpose of this post, is to engage users of node-red-contrib-zwave-js (node) - Node-RED. According to analytics, where opted in of course, around 130 active installations are known with this Node. 130 isn't…

---

## [Poll the state of a device on demand](https://discourse.nodered.org/t/poll-the-state-of-a-device-on-demand/70137)

<div class="topic-metadata">

**Author:** [@Anduvo](https://discourse.nodered.org/u/Anduvo)\
**Replies:** 17\
**Last updated:** [19 November 2022 21:10 UTC](https://discourse.nodered.org/t/poll-the-state-of-a-device-on-demand/70137 "2022-11-19T21:10:53Z")

</div>

Hi All, How can I poll the state of a device on demand? I don't want to wait until the device publish it's new readings on it's own because is too slow. More specifically I want to poll the state of an aqara motion se…

---

## [How to add a paragraph in node-red dashboard?](https://discourse.nodered.org/t/how-to-add-a-paragraph-in-node-red-dashboard/70763)

<div class="topic-metadata">

**Author:** [@Vaibhavi27](https://discourse.nodered.org/u/Vaibhavi27)\
**Replies:** 12\
**Last updated:** [19 November 2022 18:41 UTC](https://discourse.nodered.org/t/how-to-add-a-paragraph-in-node-red-dashboard/70763 "2022-11-19T18:41:17Z")

</div>

I have created a dashboard for motorcycle monitoring system. Which would take input from them sensors and display as gauge and line chart. I also want to ad a note that explains the working( this I would take data from g…

---

## [Supported node versions document update?](https://discourse.nodered.org/t/supported-node-versions-document-update/70881)

<div class="topic-metadata">

**Author:** [@Colin](https://discourse.nodered.org/u/Colin)\
**Replies:** 2\
**Last updated:** [19 November 2022 17:32 UTC](https://discourse.nodered.org/t/supported-node-versions-document-update/70881 "2022-11-19T17:32:38Z")

</div>

Does this page need updating? https://nodered.org/docs/faq/node-versions It suggests that nodejs 12 is supported for the current NR version, whereas I believe that at least 14 is required. Also do we still recommend 1…

---

## [Node-RED crashes because of S7-comm](https://discourse.nodered.org/t/node-red-crashes-because-of-s7-comm/70841)

<div class="topic-metadata">

**Author:** [@henkkas](https://discourse.nodered.org/u/henkkas)\
**Replies:** 7\
**Last updated:** [19 November 2022 16:32 UTC](https://discourse.nodered.org/t/node-red-crashes-because-of-s7-comm/70841 "2022-11-19T16:32:49Z")

</div>

S7-comm is running fine on Node-RED, but lately more and more times Node-RED crashes after (re)start because of S7-comm. Finally I found the cause and this is what I wanted to share with you all. Solution: Don't start …

---

## [Homeassistant core and node red on docker do not interface](https://discourse.nodered.org/t/homeassistant-core-and-node-red-on-docker-do-not-interface/70847)

<div class="topic-metadata">

**Author:** [@albertocapecchi795](https://discourse.nodered.org/u/albertocapecchi795)\
**Replies:** 6\
**Last updated:** [19 November 2022 16:24 UTC](https://discourse.nodered.org/t/homeassistant-core-and-node-red-on-docker-do-not-interface/70847 "2022-11-19T16:24:50Z")

</div>

Hi all, I have a perhaps trivial problem but to which I can't find a solution. I installed homeassistant core and node red on docker. Both servers work, unfortunately I can't get the node red server to see the homeassi…

---

## [Node Red Nordpool API, need help filtering the message](https://discourse.nodered.org/t/node-red-nordpool-api-need-help-filtering-the-message/70855)

<div class="topic-metadata">

**Author:** [@virtaz](https://discourse.nodered.org/u/virtaz)\
**Replies:** 2\
**Last updated:** [19 November 2022 14:56 UTC](https://discourse.nodered.org/t/node-red-nordpool-api-need-help-filtering-the-message/70855 "2022-11-19T14:56:28Z")

</div>

Hey. I'm using a flow copied from here: https://discourse.nodered.org/t/extract-value-from-array-based-on-timestamp/56954 It's workin ok, but the problem is that the price changes at the wrong time : Price change a…

---

## [Help me stop repeating message. (Super noob)](https://discourse.nodered.org/t/help-me-stop-repeating-message-super-noob/70832)

<div class="topic-metadata">

**Author:** [@lemehavit](https://discourse.nodered.org/u/lemehavit)\
**Replies:** 9\
**Last updated:** [19 November 2022 13:05 UTC](https://discourse.nodered.org/t/help-me-stop-repeating-message-super-noob/70832 "2022-11-19T13:05:10Z")

</div>

Hi I’m completely new to node red and I tried for hours to figure this out and need some help. I made a very simple flow that checks current electricity prices and turn on or off my AC unit. Base on specific values, now…

---

## [Two separate instances of MQTT and Node Red](https://discourse.nodered.org/t/two-separate-instances-of-mqtt-and-node-red/70871)

<div class="topic-metadata">

**Author:** [@Surefire01](https://discourse.nodered.org/u/Surefire01)\
**Replies:** 7\
**Last updated:** [19 November 2022 13:00 UTC](https://discourse.nodered.org/t/two-separate-instances-of-mqtt-and-node-red/70871 "2022-11-19T13:00:06Z")

</div>

Chaps A bit of advice please. My system consists of Node Red running on a Raspberry Pi 4 receiving data from several Sonoff TH16's temperature sensors (which have been flashed with Tasmota). The data is sent via an MQT…

---

## [Easiest way to integrate icons in ui-table](https://discourse.nodered.org/t/easiest-way-to-integrate-icons-in-ui-table/70873)

<div class="topic-metadata">

**Author:** [@jenssen](https://discourse.nodered.org/u/jenssen)\
**Replies:** 0\
**Last updated:** [19 November 2022 12:35 UTC](https://discourse.nodered.org/t/easiest-way-to-integrate-icons-in-ui-table/70873 "2022-11-19T12:35:16Z")

</div>

Hello, What is the easiest way to add the standard (dashboard) icons into ui-table? I want to make a table with several rows, one colum will have an icon that can change per row. I do not want to save the icons as an i…

---

## [Aynchronous wait node?](https://discourse.nodered.org/t/aynchronous-wait-node/70825)

<div class="topic-metadata">

**Author:** [@Gawan](https://discourse.nodered.org/u/Gawan)\
**Replies:** 11\
**Last updated:** [19 November 2022 01:15 UTC](https://discourse.nodered.org/t/aynchronous-wait-node/70825 "2022-11-19T01:15:51Z")

</div>

Hi, is there any kind of "asynchronous wait node" that can be used to forward messages with a fixed delay ? On the input side many messages are sent in a short period of time (like 10 / sec), but they should be forward…

---

## [Preparing MQTT Flow for Embedded Devices](https://discourse.nodered.org/t/preparing-mqtt-flow-for-embedded-devices/70790)

<div class="topic-metadata">

**Author:** [@besselfunct](https://discourse.nodered.org/u/besselfunct)\
**Replies:** 4\
**Last updated:** [18 November 2022 17:54 UTC](https://discourse.nodered.org/t/preparing-mqtt-flow-for-embedded-devices/70790 "2022-11-18T17:54:31Z")

</div>

Hi, So I'm trying to build a dashboard for our laboratory to control some custom-built temperature controllers. I thought this was going to be a relatively straightforward task, but it's been giving me fits. I want to …

---

## [Problem in converting decimal to ascii](https://discourse.nodered.org/t/problem-in-converting-decimal-to-ascii/70823)

<div class="topic-metadata">

**Author:** [@Alxender](https://discourse.nodered.org/u/Alxender)\
**Replies:** 3\
**Last updated:** [18 November 2022 22:22 UTC](https://discourse.nodered.org/t/problem-in-converting-decimal-to-ascii/70823 "2022-11-18T22:22:12Z")

</div>

I have problem in converting decimal to ascii. Can anyone glad to help me.?

---

## [Amazon s3 out node returns 'invalid properties -aws'](https://discourse.nodered.org/t/amazon-s3-out-node-returns-invalid-properties-aws/70856)

<div class="topic-metadata">

**Author:** [@Ihum](https://discourse.nodered.org/u/Ihum)\
**Replies:** 0\
**Last updated:** [18 November 2022 21:00 UTC](https://discourse.nodered.org/t/amazon-s3-out-node-returns-invalid-properties-aws/70856 "2022-11-18T21:00:27Z")

</div>

I am writing different JS functions to post, delete and get flows, and my flow is using the s3 out node. I am using the variables ${awsConfig} and ${s3Bucket} to hold values for aws and bucket. When I run the js file …

---

## [Addressing array variables](https://discourse.nodered.org/t/addressing-array-variables/70730)

<div class="topic-metadata">

**Author:** [@interscope101](https://discourse.nodered.org/u/interscope101)\
**Replies:** 16\
**Last updated:** [18 November 2022 20:06 UTC](https://discourse.nodered.org/t/addressing-array-variables/70730 "2022-11-18T20:06:42Z")

</div>

Hi! I have incoming array sets that get displayed in a tabulator table, where selected variables from each array (e.g. payload\[0\].position.units.value) make up the row. Table setup was straightforward, I simply point t…

---

## [Get Keyboard/barcode (qr) input on Windows](https://discourse.nodered.org/t/get-keyboard-barcode-qr-input-on-windows/70824)

<div class="topic-metadata">

**Author:** [@Sephen](https://discourse.nodered.org/u/Sephen)\
**Replies:** 9\
**Last updated:** [18 November 2022 19:35 UTC](https://discourse.nodered.org/t/get-keyboard-barcode-qr-input-on-windows/70824 "2022-11-18T19:35:55Z")

</div>

I've got a generic QR code scanner which basically behaves like a keyboard. I'm trying to get this qr barcode input when a barcode is scanned. Does anybody how to get this to work on Windows?

---

## [Thermostat via external sensor | Understanding MQTT or Home Assistant](https://discourse.nodered.org/t/thermostat-via-external-sensor-understanding-mqtt-or-home-assistant/70490)

<div class="topic-metadata">

**Author:** [@dokwon](https://discourse.nodered.org/u/dokwon)\
**Replies:** 14\
**Last updated:** [18 November 2022 19:14 UTC](https://discourse.nodered.org/t/thermostat-via-external-sensor-understanding-mqtt-or-home-assistant/70490 "2022-11-18T19:14:22Z")

</div>

First post, hope it's not terrible! Hi guys. So, as the title suggests I am planning a specific automation while also trying to understand as much as possible about node red in the process. I am running HA dockerized o…

---

## [New! Conversion data array boolean to char. Reading module inputs](https://discourse.nodered.org/t/new-conversion-data-array-boolean-to-char-reading-module-inputs/68877)

<div class="topic-metadata">

**Author:** [@Johnn](https://discourse.nodered.org/u/Johnn)\
**Replies:** 41\
**Last updated:** [18 November 2022 17:58 UTC](https://discourse.nodered.org/t/new-conversion-data-array-boolean-to-char-reading-module-inputs/68877 "2022-11-18T17:58:55Z")

</div>

Hello everyone! I am new and I am learning little by little. I got stuck in a data conversion. I have a module with 16 digital inputs. This module communicates by modbus. With a command I read an array of 16 booleans. …

---

## [Msg : "Error saving flows - msg : undefined undefined](https://discourse.nodered.org/t/msg-error-saving-flows-msg-undefined-undefined/6038)

<div class="topic-metadata">

**Author:** [@freddyandresh](https://discourse.nodered.org/u/freddyandresh)\
**Replies:** 8\
**Last updated:** [18 November 2022 14:09 UTC](https://discourse.nodered.org/t/msg-error-saving-flows-msg-undefined-undefined/6038 "2022-11-18T14:09:38Z")

</div>

Hello Experts, We have been working on a Web App in bluemix(IBM Cloud) using node-red, recently we have started receiving an unexpected error with not much detail of what is wrong. When we run node-red in IBM cloud, t…

---

## [How can I collect all data in one array](https://discourse.nodered.org/t/how-can-i-collect-all-data-in-one-array/70833)

<div class="topic-metadata">

**Author:** [@Remili158](https://discourse.nodered.org/u/Remili158)\
**Replies:** 1\
**Last updated:** [18 November 2022 13:39 UTC](https://discourse.nodered.org/t/how-can-i-collect-all-data-in-one-array/70833 "2022-11-18T13:39:05Z")

</div>

Hello everyone, I want to collect data coming from a sensor in an array. The sensor output is actualised every 1 sec. Every time a new value comes only 1 value will be stored in my array and the other values are 0. her…

---

## [Function-node backend as reusable package](https://discourse.nodered.org/t/function-node-backend-as-reusable-package/70797)

<div class="topic-metadata">

**Author:** [@BartButenaers](https://discourse.nodered.org/u/BartButenaers)\
**Replies:** 4\
**Last updated:** [18 November 2022 12:46 UTC](https://discourse.nodered.org/t/function-node-backend-as-reusable-package/70797 "2022-11-18T12:46:48Z")

</div>

Hi folks, I am currently in a situation where I need a Function-node alike VM in the backend of one of my nodes, to implement a useful feature. For my node-red-contrib-blockly node I needed something similar at the tim…

---

## [Docker Development and move to production best practices](https://discourse.nodered.org/t/docker-development-and-move-to-production-best-practices/70821)

<div class="topic-metadata">

**Author:** [@zafrirron](https://discourse.nodered.org/u/zafrirron)\
**Replies:** 0\
**Last updated:** [18 November 2022 10:43 UTC](https://discourse.nodered.org/t/docker-development-and-move-to-production-best-practices/70821 "2022-11-18T10:43:01Z")

</div>

I'm currently evaluating migration of a large Node-Red application to docker environment. Experimenting quite a while with building customized image and persistence of data using volumes. Couple of best practices metho…

---

## [Node-red-contrib-mastodon](https://discourse.nodered.org/t/node-red-contrib-mastodon/70103)

<div class="topic-metadata">

**Author:** [@cymplecy](https://discourse.nodered.org/u/cymplecy)\
**Replies:** 17\
**Last updated:** [18 November 2022 10:21 UTC](https://discourse.nodered.org/t/node-red-contrib-mastodon/70103 "2022-11-18T10:21:35Z")

</div>

FYI Although the node is 4 years old - it seems to work fine

---

## [Node-red does not run on IoT Edge module on a Windows device](https://discourse.nodered.org/t/node-red-does-not-run-on-iot-edge-module-on-a-windows-device/70641)

<div class="topic-metadata">

**Author:** [@arseny-sandaar](https://discourse.nodered.org/u/arseny-sandaar)\
**Replies:** 4\
**Last updated:** [18 November 2022 10:18 UTC](https://discourse.nodered.org/t/node-red-does-not-run-on-iot-edge-module-on-a-windows-device/70641 "2022-11-18T10:18:53Z")

</div>

Hi there, I am trying to deploy node-red on IoT edge device installed on Windows device (bash). IoT edge device is succesfully installed on Windows device following the manual from Microsoft. On my IoT edge device I a…

---

## [Convert pdf to json using external module](https://discourse.nodered.org/t/convert-pdf-to-json-using-external-module/70819)

<div class="topic-metadata">

**Author:** [@mtoko](https://discourse.nodered.org/u/mtoko)\
**Replies:** 0\
**Last updated:** [18 November 2022 10:09 UTC](https://discourse.nodered.org/t/convert-pdf-to-json-using-external-module/70819 "2022-11-18T10:09:17Z")

</div>

Hi I am trying to convert a pdf to json using the npm module pdf2json. I have followed the example here https://flows.nodered.org/flow/195773d3b493d81c9bf012f64da02ea3 and modified the settings.js. When I start NR I …

---

## [High Frequency Polling](https://discourse.nodered.org/t/high-frequency-polling/70796)

<div class="topic-metadata">

**Author:** [@ceejm1](https://discourse.nodered.org/u/ceejm1)\
**Replies:** 2\
**Last updated:** [18 November 2022 09:46 UTC](https://discourse.nodered.org/t/high-frequency-polling/70796 "2022-11-18T09:46:22Z")

</div>

Hello, I have one of these boards for triggering sound effects from contact closures. It comes with a node for node-Red and I had expected to be able to obtain an output on a state change however it requires polling …

---

## [Custom sunrise LED light setup](https://discourse.nodered.org/t/custom-sunrise-led-light-setup/70773)

<div class="topic-metadata">

**Author:** [@rnelsonr](https://discourse.nodered.org/u/rnelsonr)\
**Replies:** 10\
**Last updated:** [18 November 2022 08:48 UTC](https://discourse.nodered.org/t/custom-sunrise-led-light-setup/70773 "2022-11-18T08:48:00Z")

</div>

Hi there, I have recently managed to create a custom sunrise lighting setup for my aquarium diy light, but I am having a few issues. I am using a shelly rgbw2 as my light controller for 4 LED light strips. What I have …

---

## [Custom HMI outside node-red](https://discourse.nodered.org/t/custom-hmi-outside-node-red/70714)

<div class="topic-metadata">

**Author:** [@KamalRUG92](https://discourse.nodered.org/u/KamalRUG92)\
**Replies:** 6\
**Last updated:** [18 November 2022 07:35 UTC](https://discourse.nodered.org/t/custom-hmi-outside-node-red/70714 "2022-11-18T07:35:20Z")

</div>

Hello, I have S7-1200 PLC; I would like to build an HMI for it (web-based). While doing so, I quickly realize that the programming memory is small. requirements Custom HMI is estimated to be around 400MB in size. …

---

## [Email in node error handling](https://discourse.nodered.org/t/email-in-node-error-handling/70783)

<div class="topic-metadata">

**Author:** [@lesmar96](https://discourse.nodered.org/u/lesmar96)\
**Replies:** 5\
**Last updated:** [18 November 2022 07:12 UTC](https://discourse.nodered.org/t/email-in-node-error-handling/70783 "2022-11-18T07:12:13Z")

</div>

Good Day, I am using the email-in node to monitor an email mailbox. I wanted to add error handling if this node was in error state. See the below screen shot. I have the email node selected for the catch node. But when…

---

## [Can't you add "===" to the switch node?](https://discourse.nodered.org/t/cant-you-add-to-the-switch-node/70754)

<div class="topic-metadata">

**Author:** [@mitubato](https://discourse.nodered.org/u/mitubato)\
**Replies:** 9\
**Last updated:** [18 November 2022 04:07 UTC](https://discourse.nodered.org/t/cant-you-add-to-the-switch-node/70754 "2022-11-18T04:07:12Z")

</div>

Any plans to add "===" for exact match in switch node? The purpose can be achieved by using two switch nodes or using a function node, but I thought it would be smarter to include it in the switch node. Now I am using …

[Previous page](https://discourse.nodered.org/latest.md?page=456)

[Next page](https://discourse.nodered.org/latest.md?page=458)