# Latest

**URL:** https://discourse.nodered.org/latest.md?page=1069

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

**Page:** 1070

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## [Nodered on digitalocean?](https://discourse.nodered.org/t/nodered-on-digitalocean/28244)

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**Author:** [@mattk](https://discourse.nodered.org/u/mattk)\
**Replies:** 0\
**Last updated:** [12 June 2020 16:59 UTC](https://discourse.nodered.org/t/nodered-on-digitalocean/28244 "2020-06-12T16:59:57Z")

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Hi, anyone have recent experience running Nodered on a digitalocean droplet? I'll have about 20 esp8266/esp32 sensors feeding into nodered via mqtt in various locations, Blynk is used to interface to the data. Using my …

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## [Auto scale inframe](https://discourse.nodered.org/t/auto-scale-inframe/28192)

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**Author:** [@nick](https://discourse.nodered.org/u/nick)\
**Replies:** 2\
**Last updated:** [12 June 2020 15:59 UTC](https://discourse.nodered.org/t/auto-scale-inframe/28192 "2020-06-12T15:59:54Z")

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Hi All, i have made a infrime with the tamplate node. in this inframe i want to show a webpage, for example nodred.org. So far it all works. Now i want to auto scale the webpage to the size of my frame, can sombody e…

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## [How to open image image from local file directory?](https://discourse.nodered.org/t/how-to-open-image-image-from-local-file-directory/11952)

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**Author:** [@gosaye\_1](https://discourse.nodered.org/u/gosaye_1)\
**Replies:** 6\
**Last updated:** [12 June 2020 14:31 UTC](https://discourse.nodered.org/t/how-to-open-image-image-from-local-file-directory/11952 "2020-06-12T14:31:21Z")

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how to open image image from local file directory? please help me i want to open an image in the dashboard from local file in the raspberry pi?

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## [JSONata: taking substring of message attr](https://discourse.nodered.org/t/jsonata-taking-substring-of-message-attr/28227)

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**Author:** [@Colin](https://discourse.nodered.org/u/Colin)\
**Replies:** 3\
**Last updated:** [12 June 2020 13:50 UTC](https://discourse.nodered.org/t/jsonata-taking-substring-of-message-attr/28227 "2020-06-12T13:50:45Z")

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I apparently haven't been paying attention when it comes to JSONata, even for simple use cases. I have a simple situation where msg.myrawdate contains a string like "2020-06-12T12:48:24.559Z". I want to extract the fir…

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## [Hover in template node affects all template nodes](https://discourse.nodered.org/t/hover-in-template-node-affects-all-template-nodes/28225)

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**Author:** [@Josov](https://discourse.nodered.org/u/Josov)\
**Replies:** 0\
**Last updated:** [12 June 2020 12:09 UTC](https://discourse.nodered.org/t/hover-in-template-node-affects-all-template-nodes/28225 "2020-06-12T12:09:29Z")

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I have a problem using different template nodes in the same dashboard tab. When using "hover" in a table like this: \<style\> tr:hover {background-color:gray;} \</style\> These settings appear in all templates within …

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## [Node-red flask(confused](https://discourse.nodered.org/t/node-red-flask-confused/28222)

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**Author:** [@googleplexian](https://discourse.nodered.org/u/googleplexian)\
**Replies:** 5\
**Last updated:** [12 June 2020 11:21 UTC](https://discourse.nodered.org/t/node-red-flask-confused/28222 "2020-06-12T11:21:12Z")

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hello i used node red and flask node-red to control a devices and flask for front-end (with html and css) i have a troubles to choice a protocol to communicate flask to node-red between( http ,mqtt or there is other …

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## [JSONata combine array of arrays in a 1:1 mapping](https://discourse.nodered.org/t/jsonata-combine-array-of-arrays-in-a-1-1-mapping/28206)

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**Author:** [@JSONata](https://discourse.nodered.org/u/JSONata)\
**Replies:** 5\
**Last updated:** [12 June 2020 10:41 UTC](https://discourse.nodered.org/t/jsonata-combine-array-of-arrays-in-a-1-1-mapping/28206 "2020-06-12T10:41:22Z")

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So we have an array of array with objects \[ \[{ "time" : "now" }, { "time" : "yesterday" } \], \[ { "Temperature" : 10 }, { "Temperature" : 12 } \] \] Now I want to merge these arrays that it looks like …

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## [How do I set Hue Light brightness, color etc?](https://discourse.nodered.org/t/how-do-i-set-hue-light-brightness-color-etc/28210)

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**Author:** [@peejayw](https://discourse.nodered.org/u/peejayw)\
**Replies:** 4\
**Last updated:** [12 June 2020 09:35 UTC](https://discourse.nodered.org/t/how-do-i-set-hue-light-brightness-color-etc/28210 "2020-06-12T09:35:51Z")

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I have created a simple flow that lights one of my Hue bulbs. I would like to be able to specify the brightness and color and if possible make the light flash as well. I suspect I am supposed to put something in the "da…

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## [Zigbee (Nodes node-red-contrib-zigbee) and SmartThings Sirene](https://discourse.nodered.org/t/zigbee-nodes-node-red-contrib-zigbee-and-smartthings-sirene/28123)

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**Author:** [@get-command](https://discourse.nodered.org/u/get-command)\
**Replies:** 3\
**Last updated:** [12 June 2020 09:01 UTC](https://discourse.nodered.org/t/zigbee-nodes-node-red-contrib-zigbee-and-smartthings-sirene/28123 "2020-06-12T09:01:17Z")

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Hi community, i need your help again :slight\_smile: I have successfully paired the device (https://www.zigbee2mqtt.io/devices/SZ-SRN12N.html), but how can I now use it with the motion detector? Example: motion detector…

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## [Export chart values over email (or comparable solution) Excel Node help?](https://discourse.nodered.org/t/export-chart-values-over-email-or-comparable-solution-excel-node-help/28141)

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**Author:** [@AndyDufresne422](https://discourse.nodered.org/u/AndyDufresne422)\
**Replies:** 8\
**Last updated:** [12 June 2020 08:49 UTC](https://discourse.nodered.org/t/export-chart-values-over-email-or-comparable-solution-excel-node-help/28141 "2020-06-12T08:49:10Z")

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Hi, if this a repeat post then I apologize and all linked posts will be thoroughly explored, but I've been stumped for a few days about how to get a chart to export to a user friendly format (like excel or similar data). …

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## [Best way to collect solar power forecast charts in influxDB (fields or tags or else)](https://discourse.nodered.org/t/best-way-to-collect-solar-power-forecast-charts-in-influxdb-fields-or-tags-or-else/27482)

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**Author:** [@hominidae](https://discourse.nodered.org/u/hominidae)\
**Replies:** 4\
**Last updated:** [12 June 2020 07:29 UTC](https://discourse.nodered.org/t/best-way-to-collect-solar-power-forecast-charts-in-influxdb-fields-or-tags-or-else/27482 "2020-06-12T07:29:55Z")

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Hi folks, at home, I have a freshly installed solar power plant and now wanted to do some information gathering and analysis with its data. As I can already collect various energy based information in my home to mqtt a…

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## [Example using http-request node with Basic authorization](https://discourse.nodered.org/t/example-using-http-request-node-with-basic-authorization/28205)

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**Author:** [@ozdw](https://discourse.nodered.org/u/ozdw)\
**Replies:** 2\
**Last updated:** [12 June 2020 06:53 UTC](https://discourse.nodered.org/t/example-using-http-request-node-with-basic-authorization/28205 "2020-06-12T06:53:23Z")

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I have googled and read for hours but have yet to find an example that works. I am invoking the Solcast API, which requires Basic auth and only a username containing an API key but no password. The issue is I need to p…

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## [Publishing Dashboard to website](https://discourse.nodered.org/t/publishing-dashboard-to-website/27007)

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**Author:** [@DrdP](https://discourse.nodered.org/u/DrdP)\
**Replies:** 3\
**Last updated:** [12 June 2020 03:20 UTC](https://discourse.nodered.org/t/publishing-dashboard-to-website/27007 "2020-06-12T03:20:51Z")

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Hello all, I have a pi4 connected to a Modbus device reading certain values. I want to remotely view what is happening to the device via a webpage. I will have a 3G dongle connected to the pi for internet access. I want…

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## [Dasboard ui\_template - Sizing of elements](https://discourse.nodered.org/t/dasboard-ui-template-sizing-of-elements/28171)

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**Author:** [@rwmingis](https://discourse.nodered.org/u/rwmingis)\
**Replies:** 1\
**Last updated:** [12 June 2020 01:20 UTC](https://discourse.nodered.org/t/dasboard-ui-template-sizing-of-elements/28171 "2020-06-12T01:20:30Z")

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Hi everyone, Have been exploring the ui\_template dashboard widget and find it very powerful. I can create basically a single page app with d3 charts and custom gauges etc, all in the one template. Saves having to orga…

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## [Access Node-RED from the Internet securely using NGROK](https://discourse.nodered.org/t/access-node-red-from-the-internet-securely-using-ngrok/28199)

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**Author:** [@Andrei](https://discourse.nodered.org/u/Andrei)\
**Replies:** 3\
**Last updated:** [12 June 2020 00:27 UTC](https://discourse.nodered.org/t/access-node-red-from-the-internet-securely-using-ngrok/28199 "2020-06-12T00:27:43Z")

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Hi @TotallyInformation, I think I should ask this question directly to you for obvious reason but of course it could be of general interest. I am experimenting with NGROK + Telegram based on your flow: https://flows.n…

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## [File node not working on windows](https://discourse.nodered.org/t/file-node-not-working-on-windows/28204)

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**Author:** [@korre](https://discourse.nodered.org/u/korre)\
**Replies:** 1\
**Last updated:** [11 June 2020 21:50 UTC](https://discourse.nodered.org/t/file-node-not-working-on-windows/28204 "2020-06-11T21:50:46Z")

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Hello, i try to save text in a file on windows. it is not possible to save any msg.payload into a file. any suggestions?

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## [Raspberry Pi & ADS 1x15 simple flow](https://discourse.nodered.org/t/raspberry-pi-ads-1x15-simple-flow/28198)

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**Author:** [@nlebidakis](https://discourse.nodered.org/u/nlebidakis)\
**Replies:** 1\
**Last updated:** [11 June 2020 21:16 UTC](https://discourse.nodered.org/t/raspberry-pi-ads-1x15-simple-flow/28198 "2020-06-11T21:16:23Z")

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Hello there , i am new to node red and i am trying to set up a simple task . I have connected to my Raspberry Pi a ADS1x15 ADC with a CT clamp and i am trying to measure current( AC) .I am getting data in my node red flo…

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## [Get element switch node](https://discourse.nodered.org/t/get-element-switch-node/27974)

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**Author:** [@Marty1982](https://discourse.nodered.org/u/Marty1982)\
**Replies:** 41\
**Last updated:** [11 June 2020 21:03 UTC](https://discourse.nodered.org/t/get-element-switch-node/27974 "2020-06-11T21:03:48Z")

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Hi All node-reder's! I been messing around with the switch node and i'm stuck getting the element described with the screenshot below. I want to get the lined elements and make a switch conditions with them, but for on…

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## [Email with 3 attachments?](https://discourse.nodered.org/t/email-with-3-attachments/28110)

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**Author:** [@mattk](https://discourse.nodered.org/u/mattk)\
**Replies:** 6\
**Last updated:** [11 June 2020 20:51 UTC](https://discourse.nodered.org/t/email-with-3-attachments/28110 "2020-06-11T20:51:51Z")

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Hi, I have a flow that triggers from a PIR sensor then 3 cameras take a picture, then email it to me. This is working, however it sends 3 emails with 1 attachment each. I'd like it to be a single email with 3 attachments…

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## [Copy Node by drag-and-drop right mouse button on the node](https://discourse.nodered.org/t/copy-node-by-drag-and-drop-right-mouse-button-on-the-node/28175)

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**Author:** [@syoma755](https://discourse.nodered.org/u/syoma755)\
**Replies:** 9\
**Last updated:** [11 June 2020 20:03 UTC](https://discourse.nodered.org/t/copy-node-by-drag-and-drop-right-mouse-button-on-the-node/28175 "2020-06-11T20:03:07Z")

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Not sure where to put suggestions to Node-red GUI... May I suggest something. Currently if you hold down right mouse button on the node and move it - nothing happens. I would suggest a new feature here - if you do that,…

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## [Configuration twitter with node-red](https://discourse.nodered.org/t/configuration-twitter-with-node-red/28197)

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**Author:** [@henriquemartelli](https://discourse.nodered.org/u/henriquemartelli)\
**Replies:** 0\
**Last updated:** [11 June 2020 19:10 UTC](https://discourse.nodered.org/t/configuration-twitter-with-node-red/28197 "2020-06-11T19:10:41Z")

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can someone help me by sending a simple test stream? 1- I already created the twitter developer account, and I already got the tokens. 2- I configured the entry of my users and tokens in node-red 3- appears connected,…

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## [Major update to Twitter node coming](https://discourse.nodered.org/t/major-update-to-twitter-node-coming/246)

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**Author:** [@knolleary](https://discourse.nodered.org/u/knolleary)\
**Replies:** 24\
**Last updated:** [9 May 2019 09:56 UTC](https://discourse.nodered.org/t/major-update-to-twitter-node-coming/246 "2019-05-09T09:56:47Z")

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Hi, Twitter have recently announced some changes to the APIs they provide. These will impact the functionality the Twitter node we provide is able to offer. Most of the changes don’t come in to effect until August, but…

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## [Graph course to fine](https://discourse.nodered.org/t/graph-course-to-fine/28111)

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**Author:** [@Becker](https://discourse.nodered.org/u/Becker)\
**Replies:** 9\
**Last updated:** [11 June 2020 17:38 UTC](https://discourse.nodered.org/t/graph-course-to-fine/28111 "2020-06-11T17:38:07Z")

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Hello. My course is too fine, can I adjust the graph (input) so that it is not updated every 2-seconds, but only every minute ??

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## [\[Solved\] Debug sidebar clearing at random times](https://discourse.nodered.org/t/solved-debug-sidebar-clearing-at-random-times/28183)

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**Author:** [@zenofmud](https://discourse.nodered.org/u/zenofmud)\
**Replies:** 4\
**Last updated:** [11 June 2020 16:45 UTC](https://discourse.nodered.org/t/solved-debug-sidebar-clearing-at-random-times/28183 "2020-06-11T16:45:06Z")

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MacMini - macOS v10.14.6 Node-RED version: v1.0.6 Node.js version: v12.13.0 Darwin 18.7.0 x64 LE Dashboard version 2.22.1 started at /ui Every now and then my debug sidebar clears itself. One moment there are a bunc…

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## [\[Discourse\] Immediately detect BLE module wake](https://discourse.nodered.org/t/discourse-immediately-detect-ble-module-wake/28188)

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**Author:** [@adamhun94](https://discourse.nodered.org/u/adamhun94)\
**Replies:** 0\
**Last updated:** [11 June 2020 16:26 UTC](https://discourse.nodered.org/t/discourse-immediately-detect-ble-module-wake/28188 "2020-06-11T16:26:25Z")

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Description My ultimate plan is to create a coin cell battery powered BT switch (push button) which sends data for my RPi. For that purpose I have bought a nrf52832 based BLE module and successfully programmed it. Since…

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## [Context global - node initialize](https://discourse.nodered.org/t/context-global-node-initialize/28182)

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**Author:** [@sragneau](https://discourse.nodered.org/u/sragneau)\
**Replies:** 9\
**Last updated:** [11 June 2020 16:04 UTC](https://discourse.nodered.org/t/context-global-node-initialize/28182 "2020-06-11T16:04:10Z")

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Dear community, In our custom node, we want to save an connection into context.global value. When i try this node.initialize = () =\> { node.status({ fill: "yellow", shape: "dot", …

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## [Filter to get only some data from msg.payload: string](https://discourse.nodered.org/t/filter-to-get-only-some-data-from-msg-payload-string/28174)

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**Author:** [@pwgrau](https://discourse.nodered.org/u/pwgrau)\
**Replies:** 7\
**Last updated:** [11 June 2020 15:10 UTC](https://discourse.nodered.org/t/filter-to-get-only-some-data-from-msg-payload-string/28174 "2020-06-11T15:10:27Z")

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Hello, I have this data via mqtt and I want to take it to an influxdb to graph it in a grafana, the values ​​that arrive in the graph are this whole chain, and I just need to get temperature and humidity data in number: …

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## [TypeError: Cannot read property 't' of undefined](https://discourse.nodered.org/t/typeerror-cannot-read-property-t-of-undefined/27557)

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**Author:** [@DemonKing](https://discourse.nodered.org/u/DemonKing)\
**Replies:** 20\
**Last updated:** [11 June 2020 14:46 UTC](https://discourse.nodered.org/t/typeerror-cannot-read-property-t-of-undefined/27557 "2020-06-11T14:46:20Z")

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node-red-contrib-filebrowser When i try to connect throws this error please find a solution for this thanks

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## [All posts look lighter as if read even if they haven't](https://discourse.nodered.org/t/all-posts-look-lighter-as-if-read-even-if-they-havent/28157)

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**Author:** [@cymplecy](https://discourse.nodered.org/u/cymplecy)\
**Replies:** 6\
**Last updated:** [11 June 2020 12:49 UTC](https://discourse.nodered.org/t/all-posts-look-lighter-as-if-read-even-if-they-havent/28157 "2020-06-11T12:49:02Z")

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I started noticing it yesterday - is that happening for others? Win10/Chrome

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## [UIbuilder - dynamically changing images](https://discourse.nodered.org/t/uibuilder-dynamically-changing-images/28169)

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**Author:** [@tarsel](https://discourse.nodered.org/u/tarsel)\
**Replies:** 4\
**Last updated:** [11 June 2020 12:20 UTC](https://discourse.nodered.org/t/uibuilder-dynamically-changing-images/28169 "2020-06-11T12:20:39Z")

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Hi all I am creating a simple device dashboard using UIbuilder as this allows me to serve a very basic html page. (I have a more complex page built using node-red dashboard.) Within UIbuilder I have dynamically updated …

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