# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=460

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

**Page:** 461

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## [Looping problem for modbus](https://discourse.nodered.org/t/looping-problem-for-modbus/54356)

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**Author:** [@patfrench](https://discourse.nodered.org/u/patfrench)\
**Replies:** 11\
**Last updated:** [28 November 2021 21:00 UTC](https://discourse.nodered.org/t/looping-problem-for-modbus/54356 "2021-11-28T21:00:13Z")

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Hi all I would like to increment the addresses but I can't. \[ { "id": "f4b3eb2c38e0f0f1", "type": "inject", "z": "cde86a8aacec4fc2", "name": "", "props": \[ { …

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## [Node-Red Home assistant](https://discourse.nodered.org/t/node-red-home-assistant/54408)

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**Author:** [@Sebastien78](https://discourse.nodered.org/u/Sebastien78)\
**Replies:** 1\
**Last updated:** [28 November 2021 19:41 UTC](https://discourse.nodered.org/t/node-red-home-assistant/54408 "2021-11-28T19:41:44Z")

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Good evening. My name is Sébastien and I am new to residential home automation. I installed Home Assistant on my Synology NAS with a Conbee2 USB key. I have access to my Home assistant interface without problem. I se…

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## [How do you know what JSON properties a service/entity supports?](https://discourse.nodered.org/t/how-do-you-know-what-json-properties-a-service-entity-supports/54411)

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**Author:** [@voidpointer](https://discourse.nodered.org/u/voidpointer)\
**Replies:** 1\
**Last updated:** [28 November 2021 19:03 UTC](https://discourse.nodered.org/t/how-do-you-know-what-json-properties-a-service-entity-supports/54411 "2021-11-28T19:03:50Z")

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Suppose I have a zwave smart plug and I want to control it from Node Red. How do you know what JSON properties it supports when I invoke the "call service node" on it? To me, this needs an API definition per-device so yo…

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## [Smart wifi socket thermostat from Könighaus in Nodered?](https://discourse.nodered.org/t/smart-wifi-socket-thermostat-from-konighaus-in-nodered/54395)

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**Author:** [@pinie\_pinie](https://discourse.nodered.org/u/pinie_pinie)\
**Replies:** 5\
**Last updated:** [28 November 2021 15:59 UTC](https://discourse.nodered.org/t/smart-wifi-socket-thermostat-from-konighaus-in-nodered/54395 "2021-11-28T15:59:20Z")

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Hello, I have a smart wifi socket thermostat from the Könighaus company to control my Infaroth heating. There is an app for control. Now I would like to integrate the control at least to switch it on and off in Nodered…

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## [Filter a single value from an object list](https://discourse.nodered.org/t/filter-a-single-value-from-an-object-list/54354)

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**Author:** [@Domotix](https://discourse.nodered.org/u/Domotix)\
**Replies:** 2\
**Last updated:** [28 November 2021 14:27 UTC](https://discourse.nodered.org/t/filter-a-single-value-from-an-object-list/54354 "2021-11-28T14:27:55Z")

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Hi everyone, I have recently started programming with node red. I should filter in this list of values, only the given temperature of the new state. excluding all the others.

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## [RPI sometimes reporting low supply voltage](https://discourse.nodered.org/t/rpi-sometimes-reporting-low-supply-voltage/54392)

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**Author:** [@henkkas](https://discourse.nodered.org/u/henkkas)\
**Replies:** 4\
**Last updated:** [28 November 2021 14:26 UTC](https://discourse.nodered.org/t/rpi-sometimes-reporting-low-supply-voltage/54392 "2021-11-28T14:26:44Z")

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Sometimes when I open VNC viewer on my RPI I get low voltage report. I have measured supply voltage several times, but always measure bit more then 5 volts. I don't know what to think. My question is: Is there a way to …

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## [UK: The Product Security and Telecommunications Infrastructure (PSTI) Bill](https://discourse.nodered.org/t/uk-the-product-security-and-telecommunications-infrastructure-psti-bill/54398)

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**Author:** [@marcus-j-davies](https://discourse.nodered.org/u/marcus-j-davies)\
**Replies:** 7\
**Last updated:** [28 November 2021 14:24 UTC](https://discourse.nodered.org/t/uk-the-product-security-and-telecommunications-infrastructure-psti-bill/54398 "2021-11-28T14:24:20Z")

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This might warrant some discussion? it includes 'smart home assistants' & 'Internet of Things base stations and hubs to which multiple devices connect' Admittedly its only the UK - but may need to be addressed, i.e fo…

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## [Trouble getting started with Alexa-remote](https://discourse.nodered.org/t/trouble-getting-started-with-alexa-remote/54254)

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**Author:** [@haegar33](https://discourse.nodered.org/u/haegar33)\
**Replies:** 33\
**Last updated:** [28 November 2021 13:46 UTC](https://discourse.nodered.org/t/trouble-getting-started-with-alexa-remote/54254 "2021-11-28T13:46:36Z")

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Well I just started today exploiting this Alexa node (so I gues 5.0.7 is the latest Apfelstrudel :wink: ) but I cannot get any spoke Alexa command in NR (using the example flow above from @dynamicdave ). I am using my …

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## [Creating a dropdown with a button that has the same function to inject](https://discourse.nodered.org/t/creating-a-dropdown-with-a-button-that-has-the-same-function-to-inject/54401)

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**Author:** [@nqtrung248](https://discourse.nodered.org/u/nqtrung248)\
**Replies:** 0\
**Last updated:** [28 November 2021 12:14 UTC](https://discourse.nodered.org/t/creating-a-dropdown-with-a-button-that-has-the-same-function-to-inject/54401 "2021-11-28T12:14:32Z")

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Hi, i'm new here Just want to ask something: so if i want to make a dropdown and a button that have the same fucntion to the inject node, what topic and payload should i set to both the dropdown and the button

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## [Non-http transport requested](https://discourse.nodered.org/t/non-http-transport-requested/4639)

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**Author:** [@zapicoj](https://discourse.nodered.org/u/zapicoj)\
**Replies:** 7\
**Last updated:** [28 November 2021 11:12 UTC](https://discourse.nodered.org/t/non-http-transport-requested/4639 "2021-11-28T11:12:33Z")

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Hi, I am trying to get xml data from a weather web server. When I use this URL in a browser it works fine and I receive the xml data. URL:https://api.weatherlink.com/v1/StationStatus.xml?user=001D0A00DE6A&pass=DEMO&api…

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## [Downloading pdf file from internet](https://discourse.nodered.org/t/downloading-pdf-file-from-internet/54324)

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**Author:** [@henkkas](https://discourse.nodered.org/u/henkkas)\
**Replies:** 4\
**Last updated:** [28 November 2021 08:04 UTC](https://discourse.nodered.org/t/downloading-pdf-file-from-internet/54324 "2021-11-28T08:04:36Z")

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Maybe anyone can help me with this problem. I am trying to download a pdf file from a web address and store it on RPI. THis file is not secured, I think. I can normally download it my self from the web. But If I downloa…

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## [Linking tuya web platform devices](https://discourse.nodered.org/t/linking-tuya-web-platform-devices/54341)

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**Author:** [@LHPDM](https://discourse.nodered.org/u/LHPDM)\
**Replies:** 6\
**Last updated:** [28 November 2021 00:42 UTC](https://discourse.nodered.org/t/linking-tuya-web-platform-devices/54341 "2021-11-28T00:42:31Z")

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I'm using the node-red-contrib-homebridge-automation since month. in the last days I can switch with the hb-control node the lights on and off, but if someone switches the light at the switch, over home bridge or HomeKit…

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## [How do I check that a device is online?](https://discourse.nodered.org/t/how-do-i-check-that-a-device-is-online/54189)

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**Author:** [@Sprocket-N](https://discourse.nodered.org/u/Sprocket-N)\
**Replies:** 3\
**Last updated:** [27 November 2021 21:31 UTC](https://discourse.nodered.org/t/how-do-i-check-that-a-device-is-online/54189 "2021-11-27T21:31:38Z")

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Hello, To control my outside lights and also monitor my greenhouse and garage temperatures. I have three ESP32 dev boards which communicate with Node-RED via a Mosquito server running on a Raspberry Pi4B. I have both m…

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## [Warning email alert send multiple warn!(how to send only 1 warn ?)](https://discourse.nodered.org/t/warning-email-alert-send-multiple-warn-how-to-send-only-1-warn/54374)

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**Author:** [@puteramelaka](https://discourse.nodered.org/u/puteramelaka)\
**Replies:** 8\
**Last updated:** [27 November 2021 20:37 UTC](https://discourse.nodered.org/t/warning-email-alert-send-multiple-warn-how-to-send-only-1-warn/54374 "2021-11-27T20:37:46Z")

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Hello dear community, i have developed a warning system for a accelerometer built in phone which data recieved via MQTT. The problem is the email warning triggered for multiple times.How do i send only 1 warning that i…

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## [If 1 = true -\> check if 2 = True -\> if both true = True , Else = False](https://discourse.nodered.org/t/if-1-true-check-if-2-true-if-both-true-true-else-false/54359)

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**Author:** [@LostiLama](https://discourse.nodered.org/u/LostiLama)\
**Replies:** 4\
**Last updated:** [27 November 2021 20:20 UTC](https://discourse.nodered.org/t/if-1-true-check-if-2-true-if-both-true-true-else-false/54359 "2021-11-27T20:20:30Z")

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Hello i m want a simple if else sircet but instad of switches with buttons so i select number 2 so Button 2 is true than thats saved for 5 second and when in this time a aktivations switch is pressed its true. but im no…

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## [Getting error when copying/pasting nodes](https://discourse.nodered.org/t/getting-error-when-copying-pasting-nodes/54380)

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**Author:** [@jmorris644](https://discourse.nodered.org/u/jmorris644)\
**Replies:** 2\
**Last updated:** [27 November 2021 19:21 UTC](https://discourse.nodered.org/t/getting-error-when-copying-pasting-nodes/54380 "2021-11-27T19:21:12Z")

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I am on version 2.1.3 of NR. This is a brand new installation. When I try and copy/paste a node I get the error when pasting it ERROR: TypeError: Cannot set properties of undefined (setting 'label')

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## [How to store & update NMEA-AIS data?](https://discourse.nodered.org/t/how-to-store-update-nmea-ais-data/54350)

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**Author:** [@Nice\_to\_have](https://discourse.nodered.org/u/Nice_to_have)\
**Replies:** 7\
**Last updated:** [27 November 2021 17:30 UTC](https://discourse.nodered.org/t/how-to-store-update-nmea-ais-data/54350 "2021-11-27T17:30:53Z")

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Hi Guys, I've been on this problem for a while and I can't think of a way to make this work. I am no programmer, I have learned what I know on this forum (Thank you all for that). I am recieving NMEA AIS data. I calcu…

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## [Something curious happen with an Exported/Imported flow](https://discourse.nodered.org/t/something-curious-happen-with-an-exported-imported-flow/54375)

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**Author:** [@xytsrm](https://discourse.nodered.org/u/xytsrm)\
**Replies:** 9\
**Last updated:** [27 November 2021 16:53 UTC](https://discourse.nodered.org/t/something-curious-happen-with-an-exported-imported-flow/54375 "2021-11-27T16:53:50Z")

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CONTEXT: Running some test flows between two PC's. PC1: MQTT Broker with several clients; Client 1 sends messages to Client 2. Clients 1 & 2 very simple five node groups Exported Client 1 as JSON file and Imported it t…

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## [Show wear level of SDcard + SSD (RPi)](https://discourse.nodered.org/t/show-wear-level-of-sdcard-ssd-rpi/54370)

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**Author:** [@PizzaProgram](https://discourse.nodered.org/u/PizzaProgram)\
**Replies:** 16\
**Last updated:** [27 November 2021 16:31 UTC](https://discourse.nodered.org/t/show-wear-level-of-sdcard-ssd-rpi/54370 "2021-11-27T16:31:16Z")

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How do I get the value of the wear level of my: SSD and SDCard ? on Raspberry Pi? (I've seen someone a year ago on a dashboard to showing this value, but can not find where it was.) Would be important to auto-send a…

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## [Day 1 of using Docker/Node Red - How to Uninstall a Node](https://discourse.nodered.org/t/day-1-of-using-docker-node-red-how-to-uninstall-a-node/54373)

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**Author:** [@Busta999](https://discourse.nodered.org/u/Busta999)\
**Replies:** 8\
**Last updated:** [27 November 2021 15:41 UTC](https://discourse.nodered.org/t/day-1-of-using-docker-node-red-how-to-uninstall-a-node/54373 "2021-11-27T15:41:57Z")

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Please excuse if this is a stupid question... I have Node Red running and added three Nodes. One for Hubitat another for Hue and the are working great - the third is for Plex - running into a lot of issues and just wan…

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## [Unable to find Sense hat library](https://discourse.nodered.org/t/unable-to-find-sense-hat-library/54275)

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**Author:** [@Loonhaunt](https://discourse.nodered.org/u/Loonhaunt)\
**Replies:** 17\
**Last updated:** [27 November 2021 14:30 UTC](https://discourse.nodered.org/t/unable-to-find-sense-hat-library/54275 "2021-11-27T14:30:57Z")

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2021-11-25T14:03:00Z (UTC) I was preparing to work with Rpi Sense Hat. I haven't actually gotten so far as to utilize the Sense Hat Library in Node-RED so...Maybe it works? However while updating Node-Red I was provi…

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## [Mqtt connecting](https://discourse.nodered.org/t/mqtt-connecting/54369)

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**Author:** [@LostiLama](https://discourse.nodered.org/u/LostiLama)\
**Replies:** 5\
**Last updated:** [27 November 2021 14:33 UTC](https://discourse.nodered.org/t/mqtt-connecting/54369 "2021-11-27T14:33:53Z")

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Hello i have a problem with Mosquitto or Mqtt it isnt conecting what can i do

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## [Integration with Homewhiz Appliances?](https://discourse.nodered.org/t/integration-with-homewhiz-appliances/54364)

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**Author:** [@linker3000](https://discourse.nodered.org/u/linker3000)\
**Replies:** 0\
**Last updated:** [27 November 2021 09:23 UTC](https://discourse.nodered.org/t/integration-with-homewhiz-appliances/54364 "2021-11-27T09:23:53Z")

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I have just bought a washer-dryer that supports the Homewhiz (https://www.homewhiz.com/) remote communications protocol...see where I am going!? My machine's interface is Bluetooth although I believe wifi is also used …

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## [ESP32 CAM and facial recognition in node red](https://discourse.nodered.org/t/esp32-cam-and-facial-recognition-in-node-red/54338)

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**Author:** [@rt54321](https://discourse.nodered.org/u/rt54321)\
**Replies:** 2\
**Last updated:** [27 November 2021 09:02 UTC](https://discourse.nodered.org/t/esp32-cam-and-facial-recognition-in-node-red/54338 "2021-11-27T09:02:16Z")

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Greetings All! I know that there are many resources about facial recognition using the RPi camera. I'm using the ESP camera, and I'm trying to do an image capture for comparison. Steps: Get the ESP32 CAM node up an…

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## [NodeRED Metric Logs Memory Unit](https://discourse.nodered.org/t/nodered-metric-logs-memory-unit/54360)

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**Author:** [@akashtalole](https://discourse.nodered.org/u/akashtalole)\
**Replies:** 2\
**Last updated:** [27 November 2021 08:51 UTC](https://discourse.nodered.org/t/nodered-metric-logs-memory-unit/54360 "2021-11-27T08:51:14Z")

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Hi, What is the unit of memory in metric. Is it in MB or Bytes? 25 Nov 20:59:47 - \[metric\] {"level":99,"event":"runtime.memory.rss","value":88543232,"timestamp":1637873987643} 25 Nov 20:59:47 - \[metric\] {"level":99,"ev…

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## [Telegram All ID users](https://discourse.nodered.org/t/telegram-all-id-users/54362)

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**Author:** [@gleba](https://discourse.nodered.org/u/gleba)\
**Replies:** 0\
**Last updated:** [27 November 2021 06:56 UTC](https://discourse.nodered.org/t/telegram-all-id-users/54362 "2021-11-27T06:56:07Z")

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Looking at the Telegram apiS I do not find anything that I can return to an array containing the IDs of the users of a group. Reading on the net, however, I see that the pyton APIs allow you to do it. I would like to kno…

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## [Push local project into remote github repository (Username and password issue)](https://discourse.nodered.org/t/push-local-project-into-remote-github-repository-username-and-password-issue/54346)

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**Author:** [@findoctorlin](https://discourse.nodered.org/u/findoctorlin)\
**Replies:** 4\
**Last updated:** [27 November 2021 03:15 UTC](https://discourse.nodered.org/t/push-local-project-into-remote-github-repository-username-and-password-issue/54346 "2021-11-27T03:15:56Z")

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Hi guys! I have been trying to push my local project into my github remote repository. My workflow is like: "change the parameter in settings.js from 'false' to 'true' " -\> create a new local project -\> click "+ all" b…

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## [How to convert the IR sensor values into appropriate payload values (which were to be sent via mqtt)](https://discourse.nodered.org/t/how-to-convert-the-ir-sensor-values-into-appropriate-payload-values-which-were-to-be-sent-via-mqtt/54305)

<div class="topic-metadata">

**Author:** [@KevinGallardo619](https://discourse.nodered.org/u/KevinGallardo619)\
**Replies:** 27\
**Last updated:** [27 November 2021 02:24 UTC](https://discourse.nodered.org/t/how-to-convert-the-ir-sensor-values-into-appropriate-payload-values-which-were-to-be-sent-via-mqtt/54305 "2021-11-27T02:24:23Z")

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hello this is my first post, I hope you can understand me and help me. I want to control the leds of a partner through mqtt, this previously I had already achieved but this time I want to do it through an infrared senso…

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## [Stuck with message properties. \`q-gate\` node](https://discourse.nodered.org/t/stuck-with-message-properties-q-gate-node/54203)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 17\
**Last updated:** [26 November 2021 20:49 UTC](https://discourse.nodered.org/t/stuck-with-message-properties-q-gate-node/54203 "2021-11-26T20:49:22Z")

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This bit of code is working. \[{"id":"3c80536c.fdeb74","type":"q-gate","z":"f9420cde.5b8bb8","name":"","controlTopic":"CONTROL","defaultState":"queueing","openCmd":"Go","closeCmd":"Stop","toggleCmd":"toggle","queueCmd":"…

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## [Help with generating a jpg from raw mqtt data and sending via telegam](https://discourse.nodered.org/t/help-with-generating-a-jpg-from-raw-mqtt-data-and-sending-via-telegam/54333)

<div class="topic-metadata">

**Author:** [@Yonny24](https://discourse.nodered.org/u/Yonny24)\
**Replies:** 6\
**Last updated:** [26 November 2021 18:58 UTC](https://discourse.nodered.org/t/help-with-generating-a-jpg-from-raw-mqtt-data-and-sending-via-telegam/54333 "2021-11-26T18:58:17Z")

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I really hope someone can help me here as I'm stuck..(before I pull more hair out). Got mqtt snapshot data coming in and I can preview the image with the view node. But how do I render those raw data bytes to send as a…

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