# Latest

**URL:** https://discourse.nodered.org/latest.md?page=1214

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

**Page:** 1215

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## [Newbie question: creating building-blocks that I can call from multiple flows](https://discourse.nodered.org/t/newbie-question-creating-building-blocks-that-i-can-call-from-multiple-flows/16775)

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**Author:** [@moti\_r](https://discourse.nodered.org/u/moti_r)\
**Replies:** 3\
**Last updated:** [16 October 2019 20:03 UTC](https://discourse.nodered.org/t/newbie-question-creating-building-blocks-that-i-can-call-from-multiple-flows/16775 "2019-10-16T20:03:23Z")

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Hi, Have been working with node-red for the past couple of weeks, and have successfully migrated from hass.io, extremely happy! A newbie question: I sometimes have a set of nodes that combine into a "function" - for e…

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## [User dashboard to enter credentials](https://discourse.nodered.org/t/user-dashboard-to-enter-credentials/16782)

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**Author:** [@NPLPRS](https://discourse.nodered.org/u/NPLPRS)\
**Replies:** 6\
**Last updated:** [16 October 2019 18:46 UTC](https://discourse.nodered.org/t/user-dashboard-to-enter-credentials/16782 "2019-10-16T18:46:38Z")

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Hi All, I have a project where I want a user to log into the webpage of the nodered dashboard. From there I want them to be able to provision certain details specific to them like their email address which would be the…

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## [Trigger browser camera with Dashboard button](https://discourse.nodered.org/t/trigger-browser-camera-with-dashboard-button/16778)

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**Author:** [@sandra](https://discourse.nodered.org/u/sandra)\
**Replies:** 1\
**Last updated:** [16 October 2019 17:55 UTC](https://discourse.nodered.org/t/trigger-browser-camera-with-dashboard-button/16778 "2019-10-16T17:55:24Z")

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Hi, I want to trigger the browser camera from the Dashboard using a button. I can trigger the camera from the node-red flow and show the image in the dashboard but the camera node from browser-utils package do not have…

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## [Upgrade to v1.0.2 - extremely slow (RESOLVED)](https://discourse.nodered.org/t/upgrade-to-v1-0-2-extremely-slow-resolved/16781)

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**Author:** [@hazymat](https://discourse.nodered.org/u/hazymat)\
**Replies:** 1\
**Last updated:** [16 October 2019 16:39 UTC](https://discourse.nodered.org/t/upgrade-to-v1-0-2-extremely-slow-resolved/16781 "2019-10-16T16:39:17Z")

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After upgrading to v1.0.2, my NR editor is really slow, e.g. 30-90 second page load time from F5 refresh, and it takes a long time (between 10 and 20 seconds) to register a mouse press, or for the cursor to change depend…

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## [TypeError: Cannot read property 'nodes' of undefined](https://discourse.nodered.org/t/typeerror-cannot-read-property-nodes-of-undefined/16084)

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**Author:** [@gelbo123](https://discourse.nodered.org/u/gelbo123)\
**Replies:** 9\
**Last updated:** [16 October 2019 15:42 UTC](https://discourse.nodered.org/t/typeerror-cannot-read-property-nodes-of-undefined/16084 "2019-10-16T15:42:03Z")

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Hello, I have two javascript-files for some custom-nodes... Goal is to use the functionality from "hello-world.js" which is a custom-node in the "test.js". In the first one "hello-world.js" - I'm writing an input from …

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## [Simple Web page heading issues](https://discourse.nodered.org/t/simple-web-page-heading-issues/16759)

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**Author:** [@GChapo](https://discourse.nodered.org/u/GChapo)\
**Replies:** 2\
**Last updated:** [16 October 2019 15:20 UTC](https://discourse.nodered.org/t/simple-web-page-heading-issues/16759 "2019-10-16T15:20:15Z")

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I have taken the simple websocket website from the Node Red Cookbook and tried to adapt it for my purposes. In my attempt to get an inject node to appear under two seperate headings, my lack of javascript and HTML knowl…

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## [Watch node firing multiple times (\> 2)](https://discourse.nodered.org/t/watch-node-firing-multiple-times-2/16769)

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**Author:** [@beemoe](https://discourse.nodered.org/u/beemoe)\
**Replies:** 8\
**Last updated:** [16 October 2019 14:30 UTC](https://discourse.nodered.org/t/watch-node-firing-multiple-times-2/16769 "2019-10-16T14:30:47Z")

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I'm using the standard node-red: watch node and I'm having trouble getting it to fire consistently, or allow me to filter the fires to continue the workflow one time. It is the entry point for an AI inference model wher…

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## [Help with "OR" logic needed](https://discourse.nodered.org/t/help-with-or-logic-needed/16746)

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**Author:** [@877](https://discourse.nodered.org/u/877)\
**Replies:** 14\
**Last updated:** [16 October 2019 13:58 UTC](https://discourse.nodered.org/t/help-with-or-logic-needed/16746 "2019-10-16T13:58:08Z")

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Strangely I am struggling with the seemingly simple flow. I have two lights which can be switch on independently, they output "ON" or "OFF" on their own MQTT topic (left and right). I want it so that if either light is …

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## [Influx DB with industrial raspberry device](https://discourse.nodered.org/t/influx-db-with-industrial-raspberry-device/16763)

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**Author:** [@Madhumati](https://discourse.nodered.org/u/Madhumati)\
**Replies:** 9\
**Last updated:** [16 October 2019 12:35 UTC](https://discourse.nodered.org/t/influx-db-with-industrial-raspberry-device/16763 "2019-10-16T12:35:31Z")

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Hello, Can you please guide why I get this error in node-RED debug: I am running node-RED on my industrial raspberry pi based device & want to get data over my PC running Influx DB server. belowis my script: \[{"id":…

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## [Widget created with template does not position correctly in the global layout](https://discourse.nodered.org/t/widget-created-with-template-does-not-position-correctly-in-the-global-layout/16680)

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**Author:** [@Landry25](https://discourse.nodered.org/u/Landry25)\
**Replies:** 2\
**Last updated:** [16 October 2019 08:26 UTC](https://discourse.nodered.org/t/widget-created-with-template-does-not-position-correctly-in-the-global-layout/16680 "2019-10-16T08:26:16Z")

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Dear all, I created my own dashboard widget using template. I use the layout editor (very useful to build my UI ) to add my own widget with other buttons, gauges and so on... When I'm not using my widget , everything is…

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## [Node-Red Crashing? Can't Program](https://discourse.nodered.org/t/node-red-crashing-cant-program/2232)

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**Author:** [@manfacro](https://discourse.nodered.org/u/manfacro)\
**Replies:** 11\
**Last updated:** [16 October 2019 07:01 UTC](https://discourse.nodered.org/t/node-red-crashing-cant-program/2232 "2019-10-16T07:01:55Z")

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Hi all, My Node-Red setup is currently acting up. When I was working on it tonight it stared getting really laggy, and when I added nodes in they disappeared. Now when I open up the web page a good chunk of nodes are mi…

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## [Great UPS for Raspberry Pi](https://discourse.nodered.org/t/great-ups-for-raspberry-pi/16575)

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**Author:** [@Poodlepapa](https://discourse.nodered.org/u/Poodlepapa)\
**Replies:** 17\
**Last updated:** [16 October 2019 04:26 UTC](https://discourse.nodered.org/t/great-ups-for-raspberry-pi/16575 "2019-10-16T04:26:33Z")

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I had interesting problem. I wanted to add presence detection to the far end of my driveway but didnt want to run dedicated power to the location. I had 12 volt LED lights that I had already installed but didn't want to…

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## [How to change line chart, line color depending on input values?](https://discourse.nodered.org/t/how-to-change-line-chart-line-color-depending-on-input-values/7639)

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**Author:** [@ggarate](https://discourse.nodered.org/u/ggarate)\
**Replies:** 3\
**Last updated:** [16 October 2019 03:53 UTC](https://discourse.nodered.org/t/how-to-change-line-chart-line-color-depending-on-input-values/7639 "2019-10-16T03:53:46Z")

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I'd like to be able to programatically change the line color of a line chart if it exceeded a threshold limit. See attached image. In this case I'd like the yellow line to change to green if within the limits. Please hel…

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## [Using reverse proxy](https://discourse.nodered.org/t/using-reverse-proxy/15814)

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**Author:** [@danhoo1](https://discourse.nodered.org/u/danhoo1)\
**Replies:** 1\
**Last updated:** [15 October 2019 23:51 UTC](https://discourse.nodered.org/t/using-reverse-proxy/15814 "2019-10-15T23:51:02Z")

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hello! I am using an orange pi with a cellular modem(netgear lb1120) and i cant seem to get port forwarding to work. So i am considering using reverse proxy and being that i am relativity new to this, i could not find a …

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## [Dashboard gone blank after upgrade](https://discourse.nodered.org/t/dashboard-gone-blank-after-upgrade/16542)

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**Author:** [@Statler](https://discourse.nodered.org/u/Statler)\
**Replies:** 21\
**Last updated:** [15 October 2019 23:34 UTC](https://discourse.nodered.org/t/dashboard-gone-blank-after-upgrade/16542 "2019-10-15T23:34:51Z")

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Hi all! After upgrading node-red my dashboard is loading just a blank page. Interestingly, the UI-page loads and works fine. I have read other threads here and tried the following: flushing the cache using another bro…

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## [Node-Arduino connects after MQTT in nodes](https://discourse.nodered.org/t/node-arduino-connects-after-mqtt-in-nodes/16750)

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**Author:** [@m\_elias](https://discourse.nodered.org/u/m_elias)\
**Replies:** 1\
**Last updated:** [15 October 2019 22:47 UTC](https://discourse.nodered.org/t/node-arduino-connects-after-mqtt-in-nodes/16750 "2019-10-15T22:47:36Z")

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On a Pi Zero W, I have an Arduino connected via ttyUSB0 running the StandardFirmataPlus example sketch. If it wire a MQTT In node to an Arduino Out node, the mqtt in node fires on a full deploy before the arduino out nod…

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## [Node-Red on Chromebook](https://discourse.nodered.org/t/node-red-on-chromebook/16745)

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**Author:** [@dave-kinnear](https://discourse.nodered.org/u/dave-kinnear)\
**Replies:** 3\
**Last updated:** [15 October 2019 19:35 UTC](https://discourse.nodered.org/t/node-red-on-chromebook/16745 "2019-10-15T19:35:38Z")

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Has anyone found a current instruction set for running Node-Red on a Chromebook? There are a few different instructions on Reddit and around but all of them hit a snag at some point likely due to permissions or being ou…

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## [Access my dashboard over internet](https://discourse.nodered.org/t/access-my-dashboard-over-internet/3132)

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**Author:** [@gjks9999](https://discourse.nodered.org/u/gjks9999)\
**Replies:** 22\
**Last updated:** [15 October 2019 19:18 UTC](https://discourse.nodered.org/t/access-my-dashboard-over-internet/3132 "2019-10-15T19:18:16Z")

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Hello sir ,I'm student form India .I want to access my raspberry pi GPIO pins over internet (not only same WiFi). Node red helped me a lot under WiFi communication. Plz help me to solve my problem. I'm searching form las…

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## [Is it possible to specify the client ID from an external node?](https://discourse.nodered.org/t/is-it-possible-to-specify-the-client-id-from-an-external-node/16739)

<div class="topic-metadata">

**Author:** [@andrewvo](https://discourse.nodered.org/u/andrewvo)\
**Replies:** 1\
**Last updated:** [15 October 2019 17:39 UTC](https://discourse.nodered.org/t/is-it-possible-to-specify-the-client-id-from-an-external-node/16739 "2019-10-15T17:39:24Z")

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So I am currently working on a project that will be scanning multiple devices and sending that data to our platform. In order to do this we would have to scan the serial number of the device and match it with a list of p…

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## [Trouble with flow.get](https://discourse.nodered.org/t/trouble-with-flow-get/16735)

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**Author:** [@jstou](https://discourse.nodered.org/u/jstou)\
**Replies:** 5\
**Last updated:** [15 October 2019 16:31 UTC](https://discourse.nodered.org/t/trouble-with-flow-get/16735 "2019-10-15T16:31:43Z")

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Hi, I am trying to use a switch in my UI and update the value of the switch (true or false) in a function node in another part of my flow. Based on the switch output, I am trying to use flow.get in the function node to…

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## [Unable to upgrade/remove/ install](https://discourse.nodered.org/t/unable-to-upgrade-remove-install/16729)

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**Author:** [@JoseGodinho](https://discourse.nodered.org/u/JoseGodinho)\
**Replies:** 2\
**Last updated:** [15 October 2019 15:39 UTC](https://discourse.nodered.org/t/unable-to-upgrade-remove-install/16729 "2019-10-15T15:39:51Z")

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Hello I have just installed node red , as per the bash in the documentation. And i have this strange log when try to instal a node, and also when to upgrade another 2019-10-14T14:28:38.107Z Install : node-red-contrib…

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## [Trouble Converting JS Object](https://discourse.nodered.org/t/trouble-converting-js-object/16699)

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**Author:** [@jstou](https://discourse.nodered.org/u/jstou)\
**Replies:** 15\
**Last updated:** [15 October 2019 15:30 UTC](https://discourse.nodered.org/t/trouble-converting-js-object/16699 "2019-10-15T15:30:00Z")

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Hi, I am having trouble in Node Red converting a JavaScript object to an array or format where I can manipulate the data. Below is what the object looks like, basically a single object "array" with data, where the keys …

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## [File-in node drops payload properties?](https://discourse.nodered.org/t/file-in-node-drops-payload-properties/16724)

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**Author:** [@bakman2](https://discourse.nodered.org/u/bakman2)\
**Replies:** 6\
**Last updated:** [15 October 2019 15:19 UTC](https://discourse.nodered.org/t/file-in-node-drops-payload-properties/16724 "2019-10-15T15:19:25Z")

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Consider following flow: Inject node sets payload.category to "Business" (this part will to become dynamic). Retrieve text file, payload.category is dropped. In the change node I want to use jsonata: \*.$\[$contains(…

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## [Issue about Dashboard Notification node](https://discourse.nodered.org/t/issue-about-dashboard-notification-node/16716)

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**Author:** [@esalles](https://discourse.nodered.org/u/esalles)\
**Replies:** 3\
**Last updated:** [15 October 2019 12:04 UTC](https://discourse.nodered.org/t/issue-about-dashboard-notification-node/16716 "2019-10-15T12:04:58Z")

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Hi Everybody, In facing an issue using Dashboard notifcation node: nothing is displayed, whatever I send to hte node as msg.payload and msg.topic. No error is given in debug window. I run it on Chrome. It tried to res…

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## [Excel and Nodered](https://discourse.nodered.org/t/excel-and-nodered/16707)

<div class="topic-metadata">

**Author:** [@ricardokemp](https://discourse.nodered.org/u/ricardokemp)\
**Replies:** 5\
**Last updated:** [15 October 2019 11:09 UTC](https://discourse.nodered.org/t/excel-and-nodered/16707 "2019-10-15T11:09:58Z")

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Hello Please, have any resource in Nodered to work with "recipes" ? For exemple, if I have one Excel with 6 Colums (A to F), and 6 lines Depending on the recipe selected, nodered already extracts the cell values ​​I n…

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## [How to use latest node-red version?](https://discourse.nodered.org/t/how-to-use-latest-node-red-version/16727)

<div class="topic-metadata">

**Author:** [@gelbo123](https://discourse.nodered.org/u/gelbo123)\
**Replies:** 4\
**Last updated:** [15 October 2019 10:29 UTC](https://discourse.nodered.org/t/how-to-use-latest-node-red-version/16727 "2019-10-15T10:29:47Z")

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Hello everyone, I'm using the following code from Embedding into an existing app https://nodered.org/docs/user-guide/runtime/embedding and everything works fine but the version of node-red is not the latest. I've alrea…

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## [Bug report - Link nodes](https://discourse.nodered.org/t/bug-report-link-nodes/16648)

<div class="topic-metadata">

**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 9\
**Last updated:** [15 October 2019 08:01 UTC](https://discourse.nodered.org/t/bug-report-link-nodes/16648 "2019-10-15T08:01:21Z")

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I am messing around with link nodes. I have buttons and a lot of inter-button connections. (Sorry I goofed with the screen shots.) First one you can see the nodes with the links. I delete the one indicated. (Croppe…

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## [A clock node that will emit correct payload on startup?](https://discourse.nodered.org/t/a-clock-node-that-will-emit-correct-payload-on-startup/16712)

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**Author:** [@st2000](https://discourse.nodered.org/u/st2000)\
**Replies:** 2\
**Last updated:** [15 October 2019 07:39 UTC](https://discourse.nodered.org/t/a-clock-node-that-will-emit-correct-payload-on-startup/16712 "2019-10-15T07:39:05Z")

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Is there an existing clock node that will emit the correct payload (for example, "on" or "off) on start up? Specifically, is there a clock node that will GO BACKWARDS to the last event in time and correctly set the payl…

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## [How can I load image file into the RGB array?](https://discourse.nodered.org/t/how-can-i-load-image-file-into-the-rgb-array/16670)

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**Author:** [@ded\_banzai](https://discourse.nodered.org/u/ded_banzai)\
**Replies:** 8\
**Last updated:** [15 October 2019 03:24 UTC](https://discourse.nodered.org/t/how-can-i-load-image-file-into-the-rgb-array/16670 "2019-10-15T03:24:57Z")

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I am trying to play with 16x16 WS2812B LED Matix controlled by ESP8266 with WLED firmware. It allows controlling it with UDP packets which are simply the sequence of R,G,B values. For example first three pixels where fir…

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## [On off timer switch mqtt node](https://discourse.nodered.org/t/on-off-timer-switch-mqtt-node/16616)

<div class="topic-metadata">

**Author:** [@mwawrzyniec](https://discourse.nodered.org/u/mwawrzyniec)\
**Replies:** 16\
**Last updated:** [14 October 2019 21:25 UTC](https://discourse.nodered.org/t/on-off-timer-switch-mqtt-node/16616 "2019-10-14T21:25:37Z")

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I'm looking for a way to switch an mqtt node on for 5 minutes and off for 25. Anyone have any ideas?

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