# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=738

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**Page:** 739

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## [Help please, If Spotify song & time triggers payload](https://discourse.nodered.org/t/help-please-if-spotify-song-time-triggers-payload/27807)

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**Author:** [@Mattallmighty](https://discourse.nodered.org/u/Mattallmighty)\
**Replies:** 1\
**Last updated:** [5 June 2020 06:42 UTC](https://discourse.nodered.org/t/help-please-if-spotify-song-time-triggers-payload/27807 "2020-06-05T06:42:48Z")

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Hey awesome Node-red people. Bit of a newbie and have gone through a bit of tutorials. You can see here what I am wanting to accomplish: This is using LedFx realtime lighting effects LED with your music that you are …

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## [PiXtend V2 and Rasberry dosent work with Node-Red?](https://discourse.nodered.org/t/pixtend-v2-and-rasberry-dosent-work-with-node-red/27763)

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**Author:** [@Florian1](https://discourse.nodered.org/u/Florian1)\
**Replies:** 10\
**Last updated:** [5 June 2020 05:10 UTC](https://discourse.nodered.org/t/pixtend-v2-and-rasberry-dosent-work-with-node-red/27763 "2020-06-05T05:10:47Z")

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I tried to download the Programm but when I started Node Red it send me everytime the same failure. This was my manual https://www.pixtend.de/files/manuals/APP-PX2-310\_PiXtend\_V2\_Node\_RED\_Manual\_Install\_DE.pdf Can som…

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## [Compare two values in an array](https://discourse.nodered.org/t/compare-two-values-in-an-array/27747)

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**Author:** [@Peter\_Truman](https://discourse.nodered.org/u/Peter_Truman)\
**Replies:** 4\
**Last updated:** [5 June 2020 03:43 UTC](https://discourse.nodered.org/t/compare-two-values-in-an-array/27747 "2020-06-05T03:43:04Z")

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Hi - sorry to bother you with this - I'm new to Java and node red (and Object Oriented Code in general) I have a join node that produces an array with 2 values I'm just trying to write a function node that compares t…

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## [Thought for "When testing new stuff"](https://discourse.nodered.org/t/thought-for-when-testing-new-stuff/27797)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 1\
**Last updated:** [5 June 2020 02:42 UTC](https://discourse.nodered.org/t/thought-for-when-testing-new-stuff/27797 "2020-06-05T02:42:19Z")

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I see there is a new version of Node-Red released. People are seeing weird things happening and so on. They are clearing the cache and other stuff, then what happens changes. Suggestion: When testing new things, why …

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## [uDMX / usb issue](https://discourse.nodered.org/t/udmx-usb-issue/2782)

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**Author:** [@RogierQ](https://discourse.nodered.org/u/RogierQ)\
**Replies:** 3\
**Last updated:** [4 June 2020 22:37 UTC](https://discourse.nodered.org/t/udmx-usb-issue/2782 "2020-06-04T22:37:33Z")

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I try to make udmx working on my raspberry nr installation. but i cannot get it to work. first i installed udmx, without succes. show not found below node then had contacted the developer, he helped me with an extra i…

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## [How to output exactly the same object input?](https://discourse.nodered.org/t/how-to-output-exactly-the-same-object-input/27780)

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**Author:** [@GiovanniG](https://discourse.nodered.org/u/GiovanniG)\
**Replies:** 7\
**Last updated:** [4 June 2020 22:05 UTC](https://discourse.nodered.org/t/how-to-output-exactly-the-same-object-input/27780 "2020-06-04T22:05:41Z")

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Hi, my goal is to take only the last message in a certain period of time, th first message triggers the counter, if there is no other messages during that time the last one will output as it come in input, the others wil…

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## [How can i create a table from a DB?](https://discourse.nodered.org/t/how-can-i-create-a-table-from-a-db/27779)

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**Author:** [@DAVIDLL](https://discourse.nodered.org/u/DAVIDLL)\
**Replies:** 8\
**Last updated:** [4 June 2020 19:32 UTC](https://discourse.nodered.org/t/how-can-i-create-a-table-from-a-db/27779 "2020-06-04T19:32:26Z")

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Hey! i'm new on node red, and i'm doing a project with ESP32 and node red. I'm sending values using MQTT to a database (Mysql). I read the values from the DB but i don't know how to show the DB table on the node red. I …

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## [Node red & sonos - play a local mp3 file](https://discourse.nodered.org/t/node-red-sonos-play-a-local-mp3-file/27721)

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**Author:** [@4fc8042246ffd6745bb8](https://discourse.nodered.org/u/4fc8042246ffd6745bb8)\
**Replies:** 2\
**Last updated:** [4 June 2020 18:12 UTC](https://discourse.nodered.org/t/node-red-sonos-play-a-local-mp3-file/27721 "2020-06-04T18:12:47Z")

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Hi Guys, I am a beginner and have a question about the "node-red-contrib-sonos-plus" node. I hope you can help me with my problem. I can play a notification on my Sonos system using the node (shown below). However, I w…

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## [Compare two entity states (temperatures) in state node](https://discourse.nodered.org/t/compare-two-entity-states-temperatures-in-state-node/27705)

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**Author:** [@R5fan](https://discourse.nodered.org/u/R5fan)\
**Replies:** 1\
**Last updated:** [4 June 2020 18:08 UTC](https://discourse.nodered.org/t/compare-two-entity-states-temperatures-in-state-node/27705 "2020-06-04T18:08:22Z")

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Im trying to compare two home assistant temperature sensor values in a current state node; one darksky outside temperature and one living room sensor. For some reason the test always results in False, regardless if I try…

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## [Msg suddenly disappears](https://discourse.nodered.org/t/msg-suddenly-disappears/27764)

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**Author:** [@mikeh](https://discourse.nodered.org/u/mikeh)\
**Replies:** 3\
**Last updated:** [4 June 2020 17:45 UTC](https://discourse.nodered.org/t/msg-suddenly-disappears/27764 "2020-06-04T17:45:15Z")

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I'm really confused on to what's happening here... I have a large array of 22,000++ records. Then I used split with fixed length of 3000 to split it to 7 messages. I used this trick to make the 7 loops run simultaneou…

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## [How to start automatically a flow?](https://discourse.nodered.org/t/how-to-start-automatically-a-flow/27777)

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**Author:** [@mykerinos1](https://discourse.nodered.org/u/mykerinos1)\
**Replies:** 4\
**Last updated:** [4 June 2020 16:09 UTC](https://discourse.nodered.org/t/how-to-start-automatically-a-flow/27777 "2020-06-04T16:09:16Z")

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Hello after a power cut ,node red has restart automatically. But the flow doesn t retart automatically. What can i do for this trouble. my flow start with a timestamp every five minutes to launch a pythn program. Thank…

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## [Date Time Join for SQL Query](https://discourse.nodered.org/t/date-time-join-for-sql-query/27768)

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**Author:** [@farcry](https://discourse.nodered.org/u/farcry)\
**Replies:** 2\
**Last updated:** [4 June 2020 16:00 UTC](https://discourse.nodered.org/t/date-time-join-for-sql-query/27768 "2020-06-04T16:00:24Z")

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Hello. I'm trying to combine Date & Time using using ui\_text\_input and ui\_date\_picker. What I'm trying to do is: Input Date and Time to get string like 2020-06-03 12:15:30.000 I wold like to use this string to QUERY …

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## [Email subject not populating](https://discourse.nodered.org/t/email-subject-not-populating/27772)

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**Author:** [@whitecider](https://discourse.nodered.org/u/whitecider)\
**Replies:** 7\
**Last updated:** [4 June 2020 14:42 UTC](https://discourse.nodered.org/t/email-subject-not-populating/27772 "2020-06-04T14:42:39Z")

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i am using the email node but for some reason the msg.topic value is not showing up in the subject line of the emails. does anyone know how to make it work? \[{"id":"f01171f6.f07ad","type":"status","z":"8dc4cb03.fcb688",…

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## [Node-red connection lost in google chrome](https://discourse.nodered.org/t/node-red-connection-lost-in-google-chrome/27568)

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**Author:** [@damiangiacone](https://discourse.nodered.org/u/damiangiacone)\
**Replies:** 21\
**Last updated:** [4 June 2020 13:45 UTC](https://discourse.nodered.org/t/node-red-connection-lost-in-google-chrome/27568 "2020-06-04T13:45:21Z")

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Hello my node-red installation started to fail with google chrome. Every 5 second show the messa "connection Lost". I started to work 7 months ago normally and two day ago started to fail. I have instaled node-red 1.0.…

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## [Pi 64 bit OS on PI 3B+](https://discourse.nodered.org/t/pi-64-bit-os-on-pi-3b/27738)

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**Author:** [@gerry](https://discourse.nodered.org/u/gerry)\
**Replies:** 9\
**Last updated:** [4 June 2020 11:41 UTC](https://discourse.nodered.org/t/pi-64-bit-os-on-pi-3b/27738 "2020-06-04T11:41:31Z")

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Rotated a Pi 3 B+ out of my "production" and put in a Pi 4 so I had this one for toying with. Downloaded the 64 bit OS, flashed and installed it. This is completely without any "scientific" methodology but the install fe…

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## [Is there a way to set context properties dynamically?](https://discourse.nodered.org/t/is-there-a-way-to-set-context-properties-dynamically/27760)

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**Author:** [@AAAAnT](https://discourse.nodered.org/u/AAAAnT)\
**Replies:** 5\
**Last updated:** [4 June 2020 11:16 UTC](https://discourse.nodered.org/t/is-there-a-way-to-set-context-properties-dynamically/27760 "2020-06-04T11:16:01Z")

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Hello I am working with a flow where I have multiple identification key saved in a JSON flow variable, as in the following example: { "info": { "id\_1": { "previous": "value\_1", "key\_2": "value\_2", …

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## [Smooth module not a number: nan](https://discourse.nodered.org/t/smooth-module-not-a-number-nan/27756)

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**Author:** [@hathemi](https://discourse.nodered.org/u/hathemi)\
**Replies:** 4\
**Last updated:** [4 June 2020 10:52 UTC](https://discourse.nodered.org/t/smooth-module-not-a-number-nan/27756 "2020-06-04T10:52:19Z")

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i'am using smooth module connected to mqtt node. when i run the flow this error appears on terminal, but nothing showing in node-red. it causes too much troubles. my dashboard starts running too slowely. any help!

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## [Every hour on the hour](https://discourse.nodered.org/t/every-hour-on-the-hour/6992)

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**Author:** [@JoseGodinho](https://discourse.nodered.org/u/JoseGodinho)\
**Replies:** 8\
**Last updated:** [4 June 2020 09:40 UTC](https://discourse.nodered.org/t/every-hour-on-the-hour/6992 "2020-06-04T09:40:35Z")

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Hello All What is the best node to have an hourly inject on the hour inject. Thank you JLG

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## [Total meltdown - All Node-red work lost](https://discourse.nodered.org/t/total-meltdown-all-node-red-work-lost/27431)

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**Author:** [@Jonoffun](https://discourse.nodered.org/u/Jonoffun)\
**Replies:** 29\
**Last updated:** [4 June 2020 08:03 UTC](https://discourse.nodered.org/t/total-meltdown-all-node-red-work-lost/27431 "2020-06-04T08:03:25Z")

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I prefer to spend months working out how to use software from YouTube videos and websites like this one - but I am stuck. All deployed on Synology DS213j Installed node-red, developed 15 flows had a great time! Install…

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## [Custom config node](https://discourse.nodered.org/t/custom-config-node/27753)

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**Author:** [@mitch85](https://discourse.nodered.org/u/mitch85)\
**Replies:** 1\
**Last updated:** [4 June 2020 07:43 UTC](https://discourse.nodered.org/t/custom-config-node/27753 "2020-06-04T07:43:36Z")

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Hi Guys, i'm starting to create some custom nodes. Now i want to make a config node. I saw the example in the docs here. But do i create new Projekt like node-red-contrib-testNode-config? Or do i implements the config h…

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## [Convert HEX) to Decimal](https://discourse.nodered.org/t/convert-hex-to-decimal/27750)

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**Author:** [@droidblast](https://discourse.nodered.org/u/droidblast)\
**Replies:** 6\
**Last updated:** [4 June 2020 07:31 UTC](https://discourse.nodered.org/t/convert-hex-to-decimal/27750 "2020-06-04T07:31:31Z")

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Need to covert EnergyToday (HEX) to Decimal. What is the best way to do this? \<response\> \<EnergyToday\>00BB\</EnergyToday\> \<EnergyYesterday\>02EC\</EnergyYesterday\> \<EnergyLifetime\>00283FDE\</EnergyLifetime\> \<HeaterInstallEn…

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## [OpenSSL Certificate not working](https://discourse.nodered.org/t/openssl-certificate-not-working/27701)

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**Author:** [@jan-k](https://discourse.nodered.org/u/jan-k)\
**Replies:** 6\
**Last updated:** [4 June 2020 05:35 UTC](https://discourse.nodered.org/t/openssl-certificate-not-working/27701 "2020-06-04T05:35:35Z")

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## [Use Node-RED as reverse proxy](https://discourse.nodered.org/t/use-node-red-as-reverse-proxy/13017)

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**Author:** [@BartButenaers](https://discourse.nodered.org/u/BartButenaers)\
**Replies:** 36\
**Last updated:** [4 June 2020 05:27 UTC](https://discourse.nodered.org/t/use-node-red-as-reverse-proxy/13017 "2020-06-04T05:27:24Z")

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Hi folks, During development of my camera-viewer, I'm having some security issues (concerning CORS). Summarized: when I show a camera Mjpeg stream from host X on my Node-RED dashboard (from host Y), I cannot get access…

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## [Smooth node question re objects](https://discourse.nodered.org/t/smooth-node-question-re-objects/27692)

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**Author:** [@craigcurtin](https://discourse.nodered.org/u/craigcurtin)\
**Replies:** 10\
**Last updated:** [3 June 2020 23:08 UTC](https://discourse.nodered.org/t/smooth-node-question-re-objects/27692 "2020-06-03T23:08:41Z")

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Guys, I have a tasmota feeding in multiple temperature values from DS18B20. In order i am Converting JSON to JS Object Splitting into what i am interested in Switching to retrieve the different values Now - i want …

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## [Cannot GET /ui/loading.html](https://discourse.nodered.org/t/cannot-get-ui-loading-html/27719)

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**Author:** [@Andrei](https://discourse.nodered.org/u/Andrei)\
**Replies:** 13\
**Last updated:** [3 June 2020 22:57 UTC](https://discourse.nodered.org/t/cannot-get-ui-loading-html/27719 "2020-06-03T22:57:43Z")

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I wonder what is causing below error message in the Dev tools console for a Node-RED application that uses the dashboard. My environment: Raspberry PI Node-RED version: v1.0.6 Node.js version: v12.16.3 Dashboard ve…

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## [Include mathematical functions](https://discourse.nodered.org/t/include-mathematical-functions/27641)

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**Author:** [@Becker](https://discourse.nodered.org/u/Becker)\
**Replies:** 11\
**Last updated:** [3 June 2020 20:54 UTC](https://discourse.nodered.org/t/include-mathematical-functions/27641 "2020-06-03T20:54:21Z")

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Hi, i have a special node from a project called NibePi, that reads out modbus data: I want to make the difference from two values (spread) and multiply this value by a third, multiply the result by a constant and ou…

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## [adminAuth TOTP for MFA](https://discourse.nodered.org/t/adminauth-totp-for-mfa/27732)

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**Author:** [@electron23](https://discourse.nodered.org/u/electron23)\
**Replies:** 0\
**Last updated:** [3 June 2020 19:13 UTC](https://discourse.nodered.org/t/adminauth-totp-for-mfa/27732 "2020-06-03T19:13:30Z")

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Hey guys, is anybody using TOTP strategies for adminAuth? I couldn´t find any related informations about that feature except some stuff with Keycloak. But I will use it plain with passport-totp or something. Thanks.

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## [Payload: Float64array](https://discourse.nodered.org/t/payload-float64array/27727)

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**Author:** [@rowen826](https://discourse.nodered.org/u/rowen826)\
**Replies:** 1\
**Last updated:** [3 June 2020 18:23 UTC](https://discourse.nodered.org/t/payload-float64array/27727 "2020-06-03T18:23:43Z")

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Hello everyone, I have a CNC reporting some torque data using OPC UA. The problems is that the data format(?) is in Float64Array and the reported value (debugging) shows double quotes. How do I convert this to a usable …

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## [How to add custom icon(from url) in world map for node-red](https://discourse.nodered.org/t/how-to-add-custom-icon-from-url-in-world-map-for-node-red/8470)

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**Author:** [@VIKRAMAS](https://discourse.nodered.org/u/VIKRAMAS)\
**Replies:** 13\
**Last updated:** [3 June 2020 18:19 UTC](https://discourse.nodered.org/t/how-to-add-custom-icon-from-url-in-world-map-for-node-red/8470 "2020-06-03T18:19:17Z")

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In node-red dashboard I want to add a custom icon(from a api), but the node-red uses font-awesome icons by default. Is there any way we can change the icon which I will fetch from a http endpoint.

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## [Create an event scheduler, like cron, time](https://discourse.nodered.org/t/create-an-event-scheduler-like-cron-time/20767)

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**Author:** [@henriquemartelli](https://discourse.nodered.org/u/henriquemartelli)\
**Replies:** 28\
**Last updated:** [3 June 2020 17:37 UTC](https://discourse.nodered.org/t/create-an-event-scheduler-like-cron-time/20767 "2020-06-03T17:37:57Z")

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flows.json (23.4 KB) Friends, I would like some help to finish my code. I am creating this event scheduler (time type), where I will select the days of the week, and times for the operation of a greenhouse that will cont…

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