# Latest

**URL:** https://discourse.nodered.org/latest.md?page=784

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

**Page:** 785

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## [How many msg.name?](https://discourse.nodered.org/t/how-many-msg-name/47726)

<div class="topic-metadata">

**Author:** [@jlian168](https://discourse.nodered.org/u/jlian168)\
**Replies:** 8\
**Last updated:** [28 June 2021 07:15 UTC](https://discourse.nodered.org/t/how-many-msg-name/47726 "2021-06-28T07:15:06Z")

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Dear All : how many msg.name? and how to use? Thank u.

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## [How to deleted it?](https://discourse.nodered.org/t/how-to-deleted-it/47723)

<div class="topic-metadata">

**Author:** [@jlian168](https://discourse.nodered.org/u/jlian168)\
**Replies:** 3\
**Last updated:** [28 June 2021 06:52 UTC](https://discourse.nodered.org/t/how-to-deleted-it/47723 "2021-06-28T06:52:36Z")

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Dear All : How to deleted red circle data? Thank u.

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## [Email node configuration by input message](https://discourse.nodered.org/t/email-node-configuration-by-input-message/47670)

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**Author:** [@Swen](https://discourse.nodered.org/u/Swen)\
**Replies:** 4\
**Last updated:** [28 June 2021 06:49 UTC](https://discourse.nodered.org/t/email-node-configuration-by-input-message/47670 "2021-06-28T06:49:04Z")

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Hi and "moin moin" to everybody. This is my first entry in this user forum. I seriously played around wih node-red for a few months now. I developed several flows with an email sending node from the "node-red-node-ema…

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## [Node prometheus export - Values from Temp sensors on Arduino](https://discourse.nodered.org/t/node-prometheus-export-values-from-temp-sensors-on-arduino/47529)

<div class="topic-metadata">

**Author:** [@mluz](https://discourse.nodered.org/u/mluz)\
**Replies:** 4\
**Last updated:** [28 June 2021 06:35 UTC](https://discourse.nodered.org/t/node-prometheus-export-values-from-temp-sensors-on-arduino/47529 "2021-06-28T06:35:21Z")

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I'am using Node-Red V1.3.5 on Windows10. I'am collecting values from a temperature sensor taken from Arduino. Its easy to collect values from Serialport to Node-Red. But I really can't understand how to configure "No…

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## [Some usage issues with Node-Red1.3.3](https://discourse.nodered.org/t/some-usage-issues-with-node-red1-3-3/47461)

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**Author:** [@MaoMao](https://discourse.nodered.org/u/MaoMao)\
**Replies:** 14\
**Last updated:** [28 June 2021 06:23 UTC](https://discourse.nodered.org/t/some-usage-issues-with-node-red1-3-3/47461 "2021-06-28T06:23:48Z")

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Recently I had a problem. My interface was always disconnected. I don't know what caused this phenomenon, and I don't know if anyone else had similar problems. I use PM2 to control Node-red on a centos7 system. I see in…

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## [FlexDash: towards a new dashboard for Node-Red](https://discourse.nodered.org/t/flexdash-towards-a-new-dashboard-for-node-red/45879)

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**Author:** [@tve](https://discourse.nodered.org/u/tve)\
**Replies:** 66\
**Last updated:** [28 June 2021 02:05 UTC](https://discourse.nodered.org/t/flexdash-towards-a-new-dashboard-for-node-red/45879 "2021-06-28T02:05:53Z")

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Over the past few weeks I've been working on a new dashboard. Initially my goal was to throw something together I could use to replace my use of the standard NR dashboard because I've outgrown it. But as I dove into it, …

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## [Compare Variables](https://discourse.nodered.org/t/compare-variables/47713)

<div class="topic-metadata">

**Author:** [@Automationguy](https://discourse.nodered.org/u/Automationguy)\
**Replies:** 4\
**Last updated:** [27 June 2021 22:22 UTC](https://discourse.nodered.org/t/compare-variables/47713 "2021-06-27T22:22:32Z")

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Hi All, Complete newbie to node red, so please excuse my basic question. I have a variable I’m converting to a message. If 0 == message 1 If \< 20 message 2 If \> 20 message 3 The problem I have is I don’t want to in…

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## [Retaining last payload](https://discourse.nodered.org/t/retaining-last-payload/47714)

<div class="topic-metadata">

**Author:** [@Automationguy](https://discourse.nodered.org/u/Automationguy)\
**Replies:** 1\
**Last updated:** [27 June 2021 20:58 UTC](https://discourse.nodered.org/t/retaining-last-payload/47714 "2021-06-27T20:58:05Z")

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Hi all, I have a tcp modbus device that communicates to other devices via rf. on occasion we have rf interference causing communication dropouts. Each payload is sent to a cloud. When the drop out occurs msg.payload w…

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## [PWM fan control over GPIO](https://discourse.nodered.org/t/pwm-fan-control-over-gpio/47682)

<div class="topic-metadata">

**Author:** [@Becker](https://discourse.nodered.org/u/Becker)\
**Replies:** 5\
**Last updated:** [27 June 2021 20:30 UTC](https://discourse.nodered.org/t/pwm-fan-control-over-gpio/47682 "2021-06-27T20:30:01Z")

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Hi, i want to obstruct the originally pwm fan you can activate it by OS, but only on/off at 60°C over pwm gpio. can I set the pwm by using gpio out: I'm not sure, because you should only set it up to a maximum of …

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## [Fail to start nodered.service on raspberry pi](https://discourse.nodered.org/t/fail-to-start-nodered-service-on-raspberry-pi/47668)

<div class="topic-metadata">

**Author:** [@2E3](https://discourse.nodered.org/u/2E3)\
**Replies:** 6\
**Last updated:** [27 June 2021 20:29 UTC](https://discourse.nodered.org/t/fail-to-start-nodered-service-on-raspberry-pi/47668 "2021-06-27T20:29:50Z")

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Hi, I am having some issues with the nodered.service Node-RED version: v1.3.5 Node.js version: v14.17.0 Linux 5.4.51+ arm LE raspberry pi Zero W I can start node-red-pi as user (2E3) without problems. However whe…

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## [Beaglebone green wireless gateway and node-red](https://discourse.nodered.org/t/beaglebone-green-wireless-gateway-and-node-red/47721)

<div class="topic-metadata">

**Author:** [@Aivaras](https://discourse.nodered.org/u/Aivaras)\
**Replies:** 0\
**Last updated:** [27 June 2021 16:42 UTC](https://discourse.nodered.org/t/beaglebone-green-wireless-gateway-and-node-red/47721 "2021-06-27T16:42:16Z")

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I have a problem with beaglebone green wireless gateway and node-red. I am trying to read analog sensor with johnny five protocol node-red-contrib-johnny5 (node) - Node-RED Problem - Node-red crashes then I am trying t…

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## [Debug message are being displayed](https://discourse.nodered.org/t/debug-message-are-being-displayed/47716)

<div class="topic-metadata">

**Author:** [@mike6283](https://discourse.nodered.org/u/mike6283)\
**Replies:** 3\
**Last updated:** [27 June 2021 16:24 UTC](https://discourse.nodered.org/t/debug-message-are-being-displayed/47716 "2021-06-27T16:24:11Z")

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Since latest update 9.1.4 in HA no message are displayed in Debug display. There is no information as to a reason in the logs. Any ideas as to why ?

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## [How to pass a context value to ui-table](https://discourse.nodered.org/t/how-to-pass-a-context-value-to-ui-table/47709)

<div class="topic-metadata">

**Author:** [@Nasro](https://discourse.nodered.org/u/Nasro)\
**Replies:** 2\
**Last updated:** [27 June 2021 11:08 UTC](https://discourse.nodered.org/t/how-to-pass-a-context-value-to-ui-table/47709 "2021-06-27T11:08:46Z")

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Hi I have this tabulator config how can I pass a value to this function I try this but dosen't work for me i am using function node that inject this msg to ui-table node var min\_justifi=flow.get("min\_justifi"); msg.…

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## [Execute node giving error 1 on including import cv2 in python file](https://discourse.nodered.org/t/execute-node-giving-error-1-on-including-import-cv2-in-python-file/47703)

<div class="topic-metadata">

**Author:** [@Rexyfur](https://discourse.nodered.org/u/Rexyfur)\
**Replies:** 2\
**Last updated:** [27 June 2021 04:44 UTC](https://discourse.nodered.org/t/execute-node-giving-error-1-on-including-import-cv2-in-python-file/47703 "2021-06-27T04:44:39Z")

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Running a python file (using exec node) which consists of importing cv2 library gives error 1. Running same file without the 'import cv2' command gives a correct output on node-red. Do note that the python file is runnin…

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## [Low Power Wireless Sensor and Gateway using Node-RED](https://discourse.nodered.org/t/low-power-wireless-sensor-and-gateway-using-node-red/44668)

<div class="topic-metadata">

**Author:** [@davidz](https://discourse.nodered.org/u/davidz)\
**Replies:** 25\
**Last updated:** [27 June 2021 03:31 UTC](https://discourse.nodered.org/t/low-power-wireless-sensor-and-gateway-using-node-red/44668 "2021-06-27T03:31:20Z")

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I have been working on low power wireless sensor development in the past five years and would like to share some design experience with Node-RED. The wireless sensors are ultra low power. For example, the temperature sen…

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## [Google Home - continue playing music after an alert](https://discourse.nodered.org/t/google-home-continue-playing-music-after-an-alert/47698)

<div class="topic-metadata">

**Author:** [@Paul-Reed](https://discourse.nodered.org/u/Paul-Reed)\
**Replies:** 2\
**Last updated:** [26 June 2021 21:56 UTC](https://discourse.nodered.org/t/google-home-continue-playing-music-after-an-alert/47698 "2021-06-26T21:56:18Z")

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It has been raised a number of times in the forum, that whilst casting/playing music on a Google speaker, any interruption such as a doorbell alert will stop the music and will not restart playing it again after the aler…

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## [Utc number to time](https://discourse.nodered.org/t/utc-number-to-time/47552)

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**Author:** [@vikozo](https://discourse.nodered.org/u/vikozo)\
**Replies:** 12\
**Last updated:** [26 June 2021 20:12 UTC](https://discourse.nodered.org/t/utc-number-to-time/47552 "2021-06-26T20:12:34Z")

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hello i call up a page and i got a objekt back payload.passes\[0\].startUTC: 1624496900 in the node red debug it is possible to click a cuple of time to get 24.6.2021, 03:08:20 \[UTC+2\] but just to send this to telgram…

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## [Deepstack Error: Input buffer contains unsupported image format](https://discourse.nodered.org/t/deepstack-error-input-buffer-contains-unsupported-image-format/47704)

<div class="topic-metadata">

**Author:** [@niclas.w82](https://discourse.nodered.org/u/niclas.w82)\
**Replies:** 0\
**Last updated:** [26 June 2021 20:04 UTC](https://discourse.nodered.org/t/deepstack-error-input-buffer-contains-unsupported-image-format/47704 "2021-06-26T20:04:52Z")

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Hi. A new deepstack problem. Running this on a Nvidia Jetson. If I send a picture using a http request node and a function node it's working perfect. But when I use node-red-contrib-deepstack I get Input buffer cont…

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## [JSON Node - Schema validation - ID problem](https://discourse.nodered.org/t/json-node-schema-validation-id-problem/47364)

<div class="topic-metadata">

**Author:** [@H3llsing](https://discourse.nodered.org/u/H3llsing)\
**Replies:** 4\
**Last updated:** [26 June 2021 17:56 UTC](https://discourse.nodered.org/t/json-node-schema-validation-id-problem/47364 "2021-06-26T17:56:08Z")

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Hey, finally i found the root cause of this topic's problem. But the thread is closed :frowning: JSON Node - Schema validation The reason why i couldn't validate a schema with $id more than once is the missing option i…

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## [TCP Server in Node-Red](https://discourse.nodered.org/t/tcp-server-in-node-red/47688)

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**Author:** [@faiaz](https://discourse.nodered.org/u/faiaz)\
**Replies:** 10\
**Last updated:** [26 June 2021 15:21 UTC](https://discourse.nodered.org/t/tcp-server-in-node-red/47688 "2021-06-26T15:21:26Z")

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Dear All I am trying to create a use case, where I have a multiple TCP devices and these devices are sending data to a TCP server which is written in C#. I want to receive that data directly into node-red by pointing …

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## [Editor this.changed == true but not sure why?](https://discourse.nodered.org/t/editor-this-changed-true-but-not-sure-why/47679)

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**Author:** [@TotallyInformation](https://discourse.nodered.org/u/TotallyInformation)\
**Replies:** 6\
**Last updated:** [26 June 2021 13:18 UTC](https://discourse.nodered.org/t/editor-this-changed-true-but-not-sure-why/47679 "2021-06-26T13:18:09Z")

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I seem to have done something silly in uibuilder. If you open the config in the Editor and press "Done" - even if you haven't made any changes - this.changed is set which adds a blue circle to the node. this.dirty isn't…

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## [Quo Vadis: Function nodes with multible outputs](https://discourse.nodered.org/t/quo-vadis-function-nodes-with-multible-outputs/47681)

<div class="topic-metadata">

**Author:** [@RonMa](https://discourse.nodered.org/u/RonMa)\
**Replies:** 9\
**Last updated:** [26 June 2021 12:02 UTC](https://discourse.nodered.org/t/quo-vadis-function-nodes-with-multible-outputs/47681 "2021-06-26T12:02:13Z")

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Hi guys, again probably a really simple question, but, again, I can´t figure it how somehow :roll\_eyes: Here is what I want to accomplish. I have a function node which is triggered when my outdoor light sensor falls u…

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## [Converting Decimal to Hex](https://discourse.nodered.org/t/converting-decimal-to-hex/47600)

<div class="topic-metadata">

**Author:** [@Apple](https://discourse.nodered.org/u/Apple)\
**Replies:** 27\
**Last updated:** [26 June 2021 11:28 UTC](https://discourse.nodered.org/t/converting-decimal-to-hex/47600 "2021-06-26T11:28:33Z")

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Hi there I'm trying to convert Decimal to Hex with raw code as a challenge someone gave me but im struggling to figure out why the the payload that's shown in the debug node is "undefined". Thank you in advance for the…

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## [RFID is not detected in Node Red](https://discourse.nodered.org/t/rfid-is-not-detected-in-node-red/47685)

<div class="topic-metadata">

**Author:** [@nurulh1909](https://discourse.nodered.org/u/nurulh1909)\
**Replies:** 12\
**Last updated:** [26 June 2021 10:54 UTC](https://discourse.nodered.org/t/rfid-is-not-detected-in-node-red/47685 "2021-06-26T10:54:22Z")

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Hi, my project is about the RFID it will detected by the MQTT node named RFID Collection. But My RFID is run with NodeMCU and has been coded as below using Arduino and it works well as displayed in the COM Serial, the R…

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## [Issue chatbot and node-red](https://discourse.nodered.org/t/issue-chatbot-and-node-red/47693)

<div class="topic-metadata">

**Author:** [@Folgore](https://discourse.nodered.org/u/Folgore)\
**Replies:** 1\
**Last updated:** [26 June 2021 10:09 UTC](https://discourse.nodered.org/t/issue-chatbot-and-node-red/47693 "2021-06-26T10:09:24Z")

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Hi. I have a BIG problem and I don't know if the problem is in node-red (1.3.3) or chatbot (0.19.7). I have a VM with node-red, chatbot and telegrambot. In this system I have: 1 bot with chatbot. 2 bot with telegrambo…

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## [HTTP request with imagefile](https://discourse.nodered.org/t/http-request-with-imagefile/47673)

<div class="topic-metadata">

**Author:** [@CodingMonkey](https://discourse.nodered.org/u/CodingMonkey)\
**Replies:** 4\
**Last updated:** [26 June 2021 09:44 UTC](https://discourse.nodered.org/t/http-request-with-imagefile/47673 "2021-06-26T09:44:26Z")

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Hello, how can I set up a HTTP request node to send an image file, according to this curl request? curl -F "imagefile=@/data/image.jpg" http://localhost:5003/process Is that possible?

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## [Add payload to an array](https://discourse.nodered.org/t/add-payload-to-an-array/47652)

<div class="topic-metadata">

**Author:** [@uselucoustic](https://discourse.nodered.org/u/uselucoustic)\
**Replies:** 3\
**Last updated:** [26 June 2021 07:04 UTC](https://discourse.nodered.org/t/add-payload-to-an-array/47652 "2021-06-26T07:04:35Z")

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I have issue getting more quotation every time new new payload pushed to an array. The flow is working fine without connecting to csv node. Please advise flows (12).json (3.4 KB) .

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## [Define msg.cc for node-red-contrib-email-out](https://discourse.nodered.org/t/define-msg-cc-for-node-red-contrib-email-out/47634)

<div class="topic-metadata">

**Author:** [@UweG](https://discourse.nodered.org/u/UweG)\
**Replies:** 6\
**Last updated:** [26 June 2021 06:31 UTC](https://discourse.nodered.org/t/define-msg-cc-for-node-red-contrib-email-out/47634 "2021-06-26T06:31:57Z")

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I am trying to create a cc in NodeRed to send mail. My attempt: msg.to = msg.MailDaten.An; msg.cc = "Test1Mail@gmx.net,Test2Mail@gmx.net"; msg.topic = msg.MailDaten.Betreff; msg.attachments =…

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## [\`catch\` node is subflows - help please](https://discourse.nodered.org/t/catch-node-is-subflows-help-please/47689)

<div class="topic-metadata">

**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 1\
**Last updated:** [26 June 2021 05:54 UTC](https://discourse.nodered.org/t/catch-node-is-subflows-help-please/47689 "2021-06-26T05:54:04Z")

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Reading the docs, I see this: If an error is logged from inside a subflow, the runtime will first check for any Catch nodes inside the subflow. If there are none there, the error will propagate up to the flow containing…

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## [Read and write String data type in S7 plc with S7 node](https://discourse.nodered.org/t/read-and-write-string-data-type-in-s7-plc-with-s7-node/47585)

<div class="topic-metadata">

**Author:** [@usmanEmder](https://discourse.nodered.org/u/usmanEmder)\
**Replies:** 1\
**Last updated:** [25 June 2021 23:59 UTC](https://discourse.nodered.org/t/read-and-write-string-data-type-in-s7-plc-with-s7-node/47585 "2021-06-25T23:59:41Z")

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I want to read and write String data type in S7 plc with S7 node. I tried it in TIA portal I assigned a variable with "string data type" and it shows me the address with "P#DB1.DBX0.0", while in the description of S7 nod…

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