# Latest

**URL:** https://discourse.nodered.org/latest.md?page=1090

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

**Page:** 1091

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## [Simulating Input registers in Modbus Server in Node-red](https://discourse.nodered.org/t/simulating-input-registers-in-modbus-server-in-node-red/26736)

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**Author:** [@saimohanty](https://discourse.nodered.org/u/saimohanty)\
**Replies:** 0\
**Last updated:** [16 May 2020 06:52 UTC](https://discourse.nodered.org/t/simulating-input-registers-in-modbus-server-in-node-red/26736 "2020-05-16T06:52:50Z")

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Hi All, I have created a modbus tcp server in node-red and using third party clienttool to read/write registers. I am able to write/read to holding registers and coils. But i want to simulate a particular input registe…

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## [Groundwater and Foul sump monitoring system](https://discourse.nodered.org/t/groundwater-and-foul-sump-monitoring-system/26677)

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**Author:** [@hazymat](https://discourse.nodered.org/u/hazymat)\
**Replies:** 4\
**Last updated:** [16 May 2020 06:07 UTC](https://discourse.nodered.org/t/groundwater-and-foul-sump-monitoring-system/26677 "2020-05-16T06:07:05Z")

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Hello all, thought I'd share my latest project with you. We are building a new home with basements, and as part of these basements we have installed sumps for groundwater and foul waste. UK building regulations stipulate…

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## [Communicate with an old device](https://discourse.nodered.org/t/communicate-with-an-old-device/25932)

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**Author:** [@maccoa](https://discourse.nodered.org/u/maccoa)\
**Replies:** 16\
**Last updated:** [16 May 2020 06:05 UTC](https://discourse.nodered.org/t/communicate-with-an-old-device/25932 "2020-05-16T06:05:07Z")

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Hello . at work, I try to communicate with a fairly old device. on a pc window I used a serial port monitor, to see what was going on. with the modbus RTU protocol: \[21/04/2020 20:34:30\] Modbus Request (COM4) Address…

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## [MongoError: docs parameter must be an array of documents (mongodb3)](https://discourse.nodered.org/t/mongoerror-docs-parameter-must-be-an-array-of-documents-mongodb3/18191)

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**Author:** [@dtuiot](https://discourse.nodered.org/u/dtuiot)\
**Replies:** 1\
**Last updated:** [16 May 2020 05:19 UTC](https://discourse.nodered.org/t/mongoerror-docs-parameter-must-be-an-array-of-documents-mongodb3/18191 "2020-05-16T05:19:08Z")

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Hi, We're experimenting with storing data to a MongoDB. As it is now, we can store data on the database, but it seems like only the 'msg.payload' is stored (as document) - and not the whole msg object. The flow is very…

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## [Inline keyboard chat](https://discourse.nodered.org/t/inline-keyboard-chat/26257)

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**Author:** [@Marty1982](https://discourse.nodered.org/u/Marty1982)\
**Replies:** 5\
**Last updated:** [15 May 2020 23:23 UTC](https://discourse.nodered.org/t/inline-keyboard-chat/26257 "2020-05-15T23:23:15Z")

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Hi all! I ask about how to generate a chat via telegram when something happens. For example, a certain node turn on the lights, when lights are on, i want to receive a telegram to choose what i want to do, Keep them ON …

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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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## [Dashbord automatisch umschalten](https://discourse.nodered.org/t/dashbord-automatisch-umschalten/26712)

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**Author:** [@rodnic](https://discourse.nodered.org/u/rodnic)\
**Replies:** 2\
**Last updated:** [15 May 2020 17:22 UTC](https://discourse.nodered.org/t/dashbord-automatisch-umschalten/26712 "2020-05-15T17:22:46Z")

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Hallo, ich habe nun mittlerweile drei Tabs mit Node Red erstellt. Diese möchte ich nun nicht nur über das Menü umschalten sondern auch über einen Button und automatisch nach ca. 10 Sekunden zum nächsten wechseln lassen…

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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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## [Add new button beside Deploy](https://discourse.nodered.org/t/add-new-button-beside-deploy/26702)

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**Author:** [@dhpatel177](https://discourse.nodered.org/u/dhpatel177)\
**Replies:** 2\
**Last updated:** [15 May 2020 13:36 UTC](https://discourse.nodered.org/t/add-new-button-beside-deploy/26702 "2020-05-15T13:36:12Z")

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Hello, can it be possible to put new button with name "save" besides Deploy button and on click of this button just want to fire some event and hide deploy button. Please guide me. Thanks.

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## [Change chart label to message topic](https://discourse.nodered.org/t/change-chart-label-to-message-topic/10546)

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**Author:** [@Louise](https://discourse.nodered.org/u/Louise)\
**Replies:** 5\
**Last updated:** [15 May 2020 13:27 UTC](https://discourse.nodered.org/t/change-chart-label-to-message-topic/10546 "2020-05-15T13:27:43Z")

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Hello, In my project I'm dealing with a lot of charts and my life would become a lot easier if I can change the chart label to my message topic so that the title displayed above my chart changes automatically depending …

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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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## [From msg.payload to table](https://discourse.nodered.org/t/from-msg-payload-to-table/26646)

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**Author:** [@Chorum](https://discourse.nodered.org/u/Chorum)\
**Replies:** 8\
**Last updated:** [15 May 2020 09:07 UTC](https://discourse.nodered.org/t/from-msg-payload-to-table/26646 "2020-05-15T09:07:27Z")

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Hello, i would like to learn how i can bring my payload into a table node. The flow i postet is only an example of what i wanna do. It doesnt work for me. My Input is a JSONObject and at that position i have only 1 se…

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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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## [Values color - gauge](https://discourse.nodered.org/t/values-color-gauge/8633)

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**Author:** [@aabbas](https://discourse.nodered.org/u/aabbas)\
**Replies:** 20\
**Last updated:** [15 May 2020 06:29 UTC](https://discourse.nodered.org/t/values-color-gauge/8633 "2020-05-15T06:29:12Z")

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Hi, I'm using some template as a gauge. I changed the text color but I need to change the values color. regards,

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## [Can I change background color without triggering button?](https://discourse.nodered.org/t/can-i-change-background-color-without-triggering-button/26685)

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**Author:** [@Nealix](https://discourse.nodered.org/u/Nealix)\
**Replies:** 2\
**Last updated:** [15 May 2020 06:27 UTC](https://discourse.nodered.org/t/can-i-change-background-color-without-triggering-button/26685 "2020-05-15T06:27:20Z")

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Is there a button node of some type where I can change the background color WITHOUT actually triggering the button? My use case is as follows; I want to push a button to send an HTTP message to a remote relay. (This…

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## [📆 Node-RED AMA session May 6th, 5pm BST, hosted by the OpenJS Foundation](https://discourse.nodered.org/t/node-red-ama-session-may-6th-5pm-bst-hosted-by-the-openjs-foundation/25874)

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**Author:** [@knolleary](https://discourse.nodered.org/u/knolleary)\
**Replies:** 27\
**Last updated:** [15 May 2020 04:43 UTC](https://discourse.nodered.org/t/node-red-ama-session-may-6th-5pm-bst-hosted-by-the-openjs-foundation/25874 "2020-05-15T04:43:29Z")

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Update: the replay is now available here: https://www.youtube.com/watch?v=gGr1SX7nxfw Next Wednesday (May 6th) at 5pm BST (9am PT), the OpenJS Foundation are hosting an Ask Me Anything session with @dceejay and me all…

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## [Keep showing msg.payload in debug node status even in object mode](https://discourse.nodered.org/t/keep-showing-msg-payload-in-debug-node-status-even-in-object-mode/26555)

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**Author:** [@cymplecy](https://discourse.nodered.org/u/cymplecy)\
**Replies:** 23\
**Last updated:** [14 May 2020 22:17 UTC](https://discourse.nodered.org/t/keep-showing-msg-payload-in-debug-node-status-even-in-object-mode/26555 "2020-05-14T22:17:53Z")

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When I've setup a standard debug node to show msg.payload in the status and then I decide I need the full message going to debug panel, it would be very nice to keep showing msg.payload in the node status, to save hav…

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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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## [Raspberry Pi Zero W: wow](https://discourse.nodered.org/t/raspberry-pi-zero-w-wow/26663)

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**Author:** [@Surefire01](https://discourse.nodered.org/u/Surefire01)\
**Replies:** 0\
**Last updated:** [14 May 2020 15:23 UTC](https://discourse.nodered.org/t/raspberry-pi-zero-w-wow/26663 "2020-05-14T15:23:39Z")

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More of an observation than a question really so here we go. From the first week of Covid-19 lock down I decided to increase my knowledge of all things IOT and have a go at automating my home heating system. I purchased…

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## [How to make a checklist form in dashboard?](https://discourse.nodered.org/t/how-to-make-a-checklist-form-in-dashboard/26661)

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**Author:** [@Zwaffie](https://discourse.nodered.org/u/Zwaffie)\
**Replies:** 0\
**Last updated:** [14 May 2020 14:24 UTC](https://discourse.nodered.org/t/how-to-make-a-checklist-form-in-dashboard/26661 "2020-05-14T14:24:12Z")

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Well hello, I'am using node red mainly for home automation. But I have a question about the dashboard. I want to make a checklist in Dashboard and submit this to a CSV file or SQL. First CSV. I have some switches and …

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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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