# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=748

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

**Page:** 749

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## [Node Red Config blinds](https://discourse.nodered.org/t/node-red-config-blinds/26723)

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**Author:** [@Vlak](https://discourse.nodered.org/u/Vlak)\
**Replies:** 1\
**Last updated:** [15 May 2020 20:55 UTC](https://discourse.nodered.org/t/node-red-config-blinds/26723 "2020-05-15T20:55:06Z")

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hello, I have a question about operating roller shutters in Node Red. can someone give me a template how to make a shutter flow. I have a roller shutter entity but I really don't know how to go about this.

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## [Css style sheet across multiple tabs](https://discourse.nodered.org/t/css-style-sheet-across-multiple-tabs/26716)

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**Author:** [@shel](https://discourse.nodered.org/u/shel)\
**Replies:** 0\
**Last updated:** [15 May 2020 18:06 UTC](https://discourse.nodered.org/t/css-style-sheet-across-multiple-tabs/26716 "2020-05-15T18:06:32Z")

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Searching through forum trying to learn CSS sheets. Found an example from @Steve-Mcl that was excellent and I think I learned quite a bit but..... I can get the styles to carry over across multiple tabs but I cannot get…

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## [Send data from local dust sensor to lufdaten](https://discourse.nodered.org/t/send-data-from-local-dust-sensor-to-lufdaten/25943)

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**Author:** [@QSKONE](https://discourse.nodered.org/u/QSKONE)\
**Replies:** 10\
**Last updated:** [15 May 2020 15:10 UTC](https://discourse.nodered.org/t/send-data-from-local-dust-sensor-to-lufdaten/25943 "2020-05-15T15:10:54Z")

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Hello, I have a question if is possible possible take data from my local dust sensor SDS011 send it to https://luftdaten.info/? Thanks

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## [How to select a CSV file from a folder](https://discourse.nodered.org/t/how-to-select-a-csv-file-from-a-folder/26683)

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**Author:** [@red\_arrowhead](https://discourse.nodered.org/u/red_arrowhead)\
**Replies:** 11\
**Last updated:** [15 May 2020 15:01 UTC](https://discourse.nodered.org/t/how-to-select-a-csv-file-from-a-folder/26683 "2020-05-15T15:01:33Z")

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I want to know how can I select a most recent CSV file from a specific folder using Node Red? I want dynamic selection of a CSV file from a specific folder. I basically, I know the folder from which the CSV file has to b…

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## [Schedex on startup](https://discourse.nodered.org/t/schedex-on-startup/26679)

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**Author:** [@LosinIt](https://discourse.nodered.org/u/LosinIt)\
**Replies:** 1\
**Last updated:** [15 May 2020 14:57 UTC](https://discourse.nodered.org/t/schedex-on-startup/26679 "2020-05-15T14:57:45Z")

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Schedex is another "must have" in my book. Thanks for the contribution! I'm using a inject node to send "send\_state" to my schedex nodes when the flow is (re)started so that my downstream nodes "do the right thing" befo…

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## [Trouble entering data to mysql](https://discourse.nodered.org/t/trouble-entering-data-to-mysql/26640)

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**Author:** [@Thewaver](https://discourse.nodered.org/u/Thewaver)\
**Replies:** 10\
**Last updated:** [15 May 2020 14:24 UTC](https://discourse.nodered.org/t/trouble-entering-data-to-mysql/26640 "2020-05-15T14:24:40Z")

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Hi, Been struggling for a while to get this to work (saving multiple sensor readers to MySQL) and finally succeeded but now it saves 2 identical lines each time to the database and I get a sporadic error message from th…

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## [Import and Export click event](https://discourse.nodered.org/t/import-and-export-click-event/26697)

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**Author:** [@dhpatel177](https://discourse.nodered.org/u/dhpatel177)\
**Replies:** 3\
**Last updated:** [15 May 2020 11:27 UTC](https://discourse.nodered.org/t/import-and-export-click-event/26697 "2020-05-15T11:27:03Z")

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Hello, I wanted to know from where this import and export event called and in which js they are to be called? Thanks

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## [Objective\_zhukovsky](https://discourse.nodered.org/t/objective-zhukovsky/26691)

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**Author:** [@Hassefar](https://discourse.nodered.org/u/Hassefar)\
**Replies:** 5\
**Last updated:** [15 May 2020 09:39 UTC](https://discourse.nodered.org/t/objective-zhukovsky/26691 "2020-05-15T09:39:27Z")

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Hi I am running node-red in docker and have just now seen a container namer "objective\_zhukovsky" which relates to the node-red image. Is this something to be concerned about (I have removed the container since it has b…

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## [Missing Fonts and Layout option after migration](https://discourse.nodered.org/t/missing-fonts-and-layout-option-after-migration/26682)

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**Author:** [@xx\_Nexus\_xx](https://discourse.nodered.org/u/xx_Nexus_xx)\
**Replies:** 4\
**Last updated:** [15 May 2020 07:04 UTC](https://discourse.nodered.org/t/missing-fonts-and-layout-option-after-migration/26682 "2020-05-15T07:04:27Z")

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I just had to migrate my RPI SD to an SSD. All the flows are working fine after the migration. However, i cant see (both were working before - no change to the code) the Font-Awesome-Icons anymore (see Samsung TV icon…

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## [Implement a people counter](https://discourse.nodered.org/t/implement-a-people-counter/26614)

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**Author:** [@gpretto](https://discourse.nodered.org/u/gpretto)\
**Replies:** 9\
**Last updated:** [14 May 2020 19:00 UTC](https://discourse.nodered.org/t/implement-a-people-counter/26614 "2020-05-14T19:00:28Z")

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Hi, I have an Rpi 4 and I need to make a people counter from a live video using opencv and python. I'm new to node red, what's the best way to do this? sorry about my English. Thank you

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## [Node-red-out-log (large file)](https://discourse.nodered.org/t/node-red-out-log-large-file/26654)

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**Author:** [@sweetwater](https://discourse.nodered.org/u/sweetwater)\
**Replies:** 14\
**Last updated:** [14 May 2020 16:48 UTC](https://discourse.nodered.org/t/node-red-out-log-large-file/26654 "2020-05-14T16:48:42Z")

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Running Node Red V0.20.8 on a Pi ( buster) Everything works, but having problem with SD card 'wear out/corruption' issues. So far we have done this: 1 . Use good 5V, 3A power supply 2. Using Samung EVO + 32 G micro s…

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## [Node-Red clicking through windows dialog boxes?](https://discourse.nodered.org/t/node-red-clicking-through-windows-dialog-boxes/26666)

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**Author:** [@JKnutson-Axcess](https://discourse.nodered.org/u/JKnutson-Axcess)\
**Replies:** 0\
**Last updated:** [14 May 2020 16:26 UTC](https://discourse.nodered.org/t/node-red-clicking-through-windows-dialog-boxes/26666 "2020-05-14T16:26:52Z")

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Hello there! I'm creating an automation using webdriver.io series of nodes found here. https://flows.nodered.org/node/node-red-contrib-wdio Basically, I'm clicking through a website, and opening a specific page and try…

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## [Mobile app recommendations for location traking](https://discourse.nodered.org/t/mobile-app-recommendations-for-location-traking/26653)

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**Author:** [@Roaders](https://discourse.nodered.org/u/Roaders)\
**Replies:** 16\
**Last updated:** [14 May 2020 14:18 UTC](https://discourse.nodered.org/t/mobile-app-recommendations-for-location-traking/26653 "2020-05-14T14:18:59Z")

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Hi All I want my garage door to open when I am cycling home and I am within x meters of home. I have a garage door opener at the moment that does this and before I leave work I toggle the GPS tracking on the app. When …

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## [Docker - testers wanted](https://discourse.nodered.org/t/docker-testers-wanted/26644)

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**Author:** [@dceejay](https://discourse.nodered.org/u/dceejay)\
**Replies:** 6\
**Last updated:** [14 May 2020 13:51 UTC](https://discourse.nodered.org/t/docker-testers-wanted/26644 "2020-05-14T13:51:03Z")

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Hi, we are wanting to make some small changes to the docker image so that it works more readily with hosting platforms like OpenShift. The main change is to the permissions on some of the internal mount points. If poss…

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## [Schedule node actions](https://discourse.nodered.org/t/schedule-node-actions/26657)

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**Author:** [@Marty1982](https://discourse.nodered.org/u/Marty1982)\
**Replies:** 0\
**Last updated:** [14 May 2020 13:35 UTC](https://discourse.nodered.org/t/schedule-node-actions/26657 "2020-05-14T13:35:59Z")

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Hi all! I want to toggle on or off a whole bunch of nodes depending it is sunset or sunrise. Here is my node chain. The first node switch the plex state, idle/pause/playing There is a condition to choose from that …

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## [How to authorize http api using post with username and password](https://discourse.nodered.org/t/how-to-authorize-http-api-using-post-with-username-and-password/26634)

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**Author:** [@Leeches](https://discourse.nodered.org/u/Leeches)\
**Replies:** 10\
**Last updated:** [14 May 2020 08:53 UTC](https://discourse.nodered.org/t/how-to-authorize-http-api-using-post-with-username-and-password/26634 "2020-05-14T08:53:40Z")

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Hello guys, I was trying to achieve something like that last few days.. What do I need. I need to POST data from api to obtain sessionId so I can use api further. Sadly I didn't even achieve to succesfully get 200 resp…

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## [Problems with I2C in node-red on Raspberry Pi](https://discourse.nodered.org/t/problems-with-i2c-in-node-red-on-raspberry-pi/26621)

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**Author:** [@oldstuffisgood](https://discourse.nodered.org/u/oldstuffisgood)\
**Replies:** 3\
**Last updated:** [14 May 2020 07:36 UTC](https://discourse.nodered.org/t/problems-with-i2c-in-node-red-on-raspberry-pi/26621 "2020-05-14T07:36:30Z")

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I'm having trouble with trying to get node-red to run my Python code and using I2C nodes on node-red. I used the following nodes so far, yet none of them work on my end for reasons explained below. exec node nod…

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## [API Event Listener](https://discourse.nodered.org/t/api-event-listener/26624)

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**Author:** [@DGRAY325](https://discourse.nodered.org/u/DGRAY325)\
**Replies:** 2\
**Last updated:** [14 May 2020 07:05 UTC](https://discourse.nodered.org/t/api-event-listener/26624 "2020-05-14T07:05:07Z")

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Really hoping someone can help me out, I am just starting to get dangerous with node.red but am still very much green. I believe what I am trying to do is rather simple, just can't wrap my head around it. What I want to…

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## [\[Home Assistant\] Improve NodeRed Flow](https://discourse.nodered.org/t/home-assistant-improve-nodered-flow/26585)

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**Author:** [@celeritas0725](https://discourse.nodered.org/u/celeritas0725)\
**Replies:** 12\
**Last updated:** [14 May 2020 04:31 UTC](https://discourse.nodered.org/t/home-assistant-improve-nodered-flow/26585 "2020-05-14T04:31:24Z")

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Hi! I want to ask your assistance on how to further improve the flow as seen below. If possible, for the part that asks the day, it will have one input with 7 outputs so that I can save space and copy only one node. TIA…

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## [Insert data in sqlite or mssql](https://discourse.nodered.org/t/insert-data-in-sqlite-or-mssql/26262)

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**Author:** [@pvv](https://discourse.nodered.org/u/pvv)\
**Replies:** 7\
**Last updated:** [13 May 2020 22:26 UTC](https://discourse.nodered.org/t/insert-data-in-sqlite-or-mssql/26262 "2020-05-13T22:26:36Z")

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Hello everyone, I want insert data upto only some points (for example only entry 500 datapoints) in sqlite or sql database, and then data insertion will stop automatticaly. Is there any such node library available, or an…

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## [Error installing node-red-contrib-raspihats](https://discourse.nodered.org/t/error-installing-node-red-contrib-raspihats/26603)

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**Author:** [@Cmilian](https://discourse.nodered.org/u/Cmilian)\
**Replies:** 3\
**Last updated:** [13 May 2020 20:24 UTC](https://discourse.nodered.org/t/error-installing-node-red-contrib-raspihats/26603 "2020-05-13T20:24:16Z")

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Hi Guys, I need some help. I have been having problems installing the node-red-contrib-raspihats. Here is my error: 2020-05-13T15:55:14.531Z \[err\] ../src/./readi2cblock.cc:111:39: error: no matching function for call t…

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## [Algorithm timers](https://discourse.nodered.org/t/algorithm-timers/26113)

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**Author:** [@HDM](https://discourse.nodered.org/u/HDM)\
**Replies:** 12\
**Last updated:** [13 May 2020 19:40 UTC](https://discourse.nodered.org/t/algorithm-timers/26113 "2020-05-13T19:40:21Z")

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good afternoon I apologize in advance if the topic was earlier algorithm of operation after 60 seconds the display turns on 4 seconds are turned on, after disconnecting, 60 seconds are counted again, the cycle is repea…

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## [I can't send email?](https://discourse.nodered.org/t/i-cant-send-email/26598)

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**Author:** [@HELPME](https://discourse.nodered.org/u/HELPME)\
**Replies:** 1\
**Last updated:** [13 May 2020 19:40 UTC](https://discourse.nodered.org/t/i-cant-send-email/26598 "2020-05-13T19:40:01Z")

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Hi, I want to try to send email, I watched a lot video, but it doesn't work. Can you help me please? I just have a timestamp which connected to the e-mail node. The e-mail node: To: receiveemailfromnodered@gmail.com …

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## [MQTT Node: Subscribing to \`+/+/$homie\` does not work?](https://discourse.nodered.org/t/mqtt-node-subscribing-to-homie-does-not-work/26522)

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**Author:** [@TotallyInformation](https://discourse.nodered.org/u/TotallyInformation)\
**Replies:** 43\
**Last updated:** [13 May 2020 19:31 UTC](https://discourse.nodered.org/t/mqtt-node-subscribing-to-homie-does-not-work/26522 "2020-05-13T19:31:40Z")

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Hi, I'm trying to get to grips with Homie better in Node-RED. The Homie convention says that controllers must subscribe to +/+/$homie in order to auto-discover the homie root topic. Unfortunately, using the MQTT-in nod…

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## [CANopen protocol nodes](https://discourse.nodered.org/t/canopen-protocol-nodes/11501)

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**Author:** [@Aleksejevs](https://discourse.nodered.org/u/Aleksejevs)\
**Replies:** 8\
**Last updated:** [13 May 2020 18:30 UTC](https://discourse.nodered.org/t/canopen-protocol-nodes/11501 "2020-05-13T18:30:24Z")

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Hello everyone, Who can help with advice. I have MSI controller (Node-Red inside) with CanBus port. Are there special nodes for CanOpen? I need connect Joystick(CANopen) and radio control (CANopen). Thank you!

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## [How to decide between template and ui-template nodes](https://discourse.nodered.org/t/how-to-decide-between-template-and-ui-template-nodes/26553)

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**Author:** [@cadu](https://discourse.nodered.org/u/cadu)\
**Replies:** 2\
**Last updated:** [13 May 2020 16:40 UTC](https://discourse.nodered.org/t/how-to-decide-between-template-and-ui-template-nodes/26553 "2020-05-13T16:40:36Z")

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Hello! I'm fairly new to Node-RED and I need to send an email with basic HTML in a flow. However, it does have tables and some logic to hide a few elements if needed. As I'd never used the mustache syntax, when I read …

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## [How to add slider on map sensor once on click it should do some action](https://discourse.nodered.org/t/how-to-add-slider-on-map-sensor-once-on-click-it-should-do-some-action/8700)

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**Author:** [@VIKRAMAS](https://discourse.nodered.org/u/VIKRAMAS)\
**Replies:** 13\
**Last updated:** [13 May 2020 16:14 UTC](https://discourse.nodered.org/t/how-to-add-slider-on-map-sensor-once-on-click-it-should-do-some-action/8700 "2020-05-13T16:14:59Z")

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In node-red I wanted to add slider on the dashboard world map, and once the user clicks on sensor mapped on world map it should show slider on tool tip.I wanted to control sensor based on that slider action is that possi…

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## [Grab text value from HTML](https://discourse.nodered.org/t/grab-text-value-from-html/26502)

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**Author:** [@Frank\_R](https://discourse.nodered.org/u/Frank_R)\
**Replies:** 8\
**Last updated:** [13 May 2020 16:05 UTC](https://discourse.nodered.org/t/grab-text-value-from-html/26502 "2020-05-13T16:05:04Z")

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Hi, im pretty new to node red and trying for a while now to grab some data from an internal webinterface. I could not get the HTTP request node to work as authentication will fail. I tried all combinations but no luck.…

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## [Setting up node-red-auth-github](https://discourse.nodered.org/t/setting-up-node-red-auth-github/6868)

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**Author:** [@SteveDonie](https://discourse.nodered.org/u/SteveDonie)\
**Replies:** 3\
**Last updated:** [13 May 2020 15:45 UTC](https://discourse.nodered.org/t/setting-up-node-red-auth-github/6868 "2020-05-13T15:45:27Z")

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I am trying to follow the instructions at https://www.npmjs.com/package/node-red-auth-github, but I am unclear on one thing - when I register the new application with github I am not sure what to put in the "Authorizatio…

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## [Get value from local webpage](https://discourse.nodered.org/t/get-value-from-local-webpage/26324)

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**Author:** [@nick](https://discourse.nodered.org/u/nick)\
**Replies:** 13\
**Last updated:** [13 May 2020 15:44 UTC](https://discourse.nodered.org/t/get-value-from-local-webpage/26324 "2020-05-13T15:44:21Z")

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Hi all, i have a local network with a device that has a webpage to show some status value's of it. now am i trying to get that information to a raspberry pi using node red. in the pictures below you will find the code…

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