# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=531

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

**Page:** 532

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

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**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)

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**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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## [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)

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

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**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)

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**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)

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

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**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)

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**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)

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**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)

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**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)

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**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)

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**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)

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**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)

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**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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## [Esportare un grafico in .pdf](https://discourse.nodered.org/t/esportare-un-grafico-in-pdf/47664)

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**Author:** [@ultim0](https://discourse.nodered.org/u/ultim0)\
**Replies:** 1\
**Last updated:** [25 June 2021 23:24 UTC](https://discourse.nodered.org/t/esportare-un-grafico-in-pdf/47664 "2021-06-25T23:24:49Z")

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Ho trovato questo codice, che esporta un grafico in .pdf. Io però vorrei esportare un grafico linea, come posso modificarlo? Grazie per l'aiuto \[{"id":"dd81d49.28f2728","type":"tab","label":"Flow 9","disabled":false,"…

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## [How to persist a message property between nodes?](https://discourse.nodered.org/t/how-to-persist-a-message-property-between-nodes/47553)

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**Author:** [@rudaNode](https://discourse.nodered.org/u/rudaNode)\
**Replies:** 11\
**Last updated:** [25 June 2021 22:24 UTC](https://discourse.nodered.org/t/how-to-persist-a-message-property-between-nodes/47553 "2021-06-25T22:24:40Z")

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I am trying to read a file and process each record as shown below. But before I process the file, I want to get the current processing time and add it to the message object so that I can later retrieve it and use later s…

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## [Context get and set performance](https://discourse.nodered.org/t/context-get-and-set-performance/47665)

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**Author:** [@tcr000](https://discourse.nodered.org/u/tcr000)\
**Replies:** 10\
**Last updated:** [25 June 2021 19:52 UTC](https://discourse.nodered.org/t/context-get-and-set-performance/47665 "2021-06-25T19:52:05Z")

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I am trying to structure some data I save to global context. When I do a global.get() in a function node, is a copy of the object made or just a reference returned? If a copy is made, it might be better to have a larger …

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## [Upload PWS data to pwsweather](https://discourse.nodered.org/t/upload-pws-data-to-pwsweather/47347)

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**Author:** [@bkenobi](https://discourse.nodered.org/u/bkenobi)\
**Replies:** 12\
**Last updated:** [25 June 2021 18:40 UTC](https://discourse.nodered.org/t/upload-pws-data-to-pwsweather/47347 "2021-06-25T18:40:48Z")

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I assumed this would be a more popular topic, but I haven't seen anything in the forum. I am trying to upload my PWS data (Acurite 5in1) to pwsweather so I can use it with my sprinkler system. Apparently, Orbit B Hyve …

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## [Messages distribution](https://discourse.nodered.org/t/messages-distribution/47524)

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**Author:** [@usmanEmder](https://discourse.nodered.org/u/usmanEmder)\
**Replies:** 9\
**Last updated:** [25 June 2021 16:41 UTC](https://discourse.nodered.org/t/messages-distribution/47524 "2021-06-25T16:41:43Z")

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I have "text input" node and I need that the 1st message appear in Output 1, then 2nd message in output 2 and so on. And after 4 messages, the 5th message will again in output 1. Below picture shows how the sketch will …

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## [How to access the hostname of the machine running Home Assistant?](https://discourse.nodered.org/t/how-to-access-the-hostname-of-the-machine-running-home-assistant/47055)

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**Author:** [@steve2020](https://discourse.nodered.org/u/steve2020)\
**Replies:** 12\
**Last updated:** [25 June 2021 16:19 UTC](https://discourse.nodered.org/t/how-to-access-the-hostname-of-the-machine-running-home-assistant/47055 "2021-06-25T16:19:21Z")

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How can I access the hostname of the machine running Home Assistant from within HA? I have a dashboard showing the status of all the computers on my network, so I’d like to have my HA host provide the hostname via MQTT. …

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## [Error: ENOENT: no such file or directory, open 'privkey.pem'](https://discourse.nodered.org/t/error-enoent-no-such-file-or-directory-open-privkey-pem/47651)

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**Author:** [@richardche](https://discourse.nodered.org/u/richardche)\
**Replies:** 2\
**Last updated:** [25 June 2021 15:55 UTC](https://discourse.nodered.org/t/error-enoent-no-such-file-or-directory-open-privkey-pem/47651 "2021-06-25T15:55:59Z")

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I installed the Node-Red docker (version 1.3.5) into QNAP NAS container station successfully, but have not managed to make the https function work yet. I mapped the "/data" folder of the docker to "/share/Storage/NASSoft…

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## [Process one message at a time](https://discourse.nodered.org/t/process-one-message-at-a-time/47551)

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**Author:** [@ScheepersJohan](https://discourse.nodered.org/u/ScheepersJohan)\
**Replies:** 19\
**Last updated:** [25 June 2021 13:27 UTC](https://discourse.nodered.org/t/process-one-message-at-a-time/47551 "2021-06-25T13:27:37Z")

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Hi, I have a flow were I have a msg. come in from MQTT, this msg. is processed and stored in a DB. How do I delay the second message to wait until the first one processing and stored in the DB, before it gets proces…

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## [Using environment variables in mongo db node](https://discourse.nodered.org/t/using-environment-variables-in-mongo-db-node/47659)

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**Author:** [@OmkarNodered](https://discourse.nodered.org/u/OmkarNodered)\
**Replies:** 1\
**Last updated:** [25 June 2021 13:14 UTC](https://discourse.nodered.org/t/using-environment-variables-in-mongo-db-node/47659 "2021-06-25T13:14:24Z")

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Hello, I have created a flow which is having mongo db node-red-contrib-mongodb2 node . So, I have set environment variables in settings.js file as process.env.host="127.0.0.1"; process.env.port = 27017; process.env.d…

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## [Function node - Connect output to input](https://discourse.nodered.org/t/function-node-connect-output-to-input/47633)

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**Author:** [@wangnick](https://discourse.nodered.org/u/wangnick)\
**Replies:** 3\
**Last updated:** [25 June 2021 09:39 UTC](https://discourse.nodered.org/t/function-node-connect-output-to-input/47633 "2021-06-25T09:39:51Z")

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I'm implementing a valve check for my irrigation system. Basically I'm switching valves on and off in a certain sequence and timing, and I'm monitoring the water consumption in between, using mqtt in and out messages. Im…

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## [Node properties stored in external json file](https://discourse.nodered.org/t/node-properties-stored-in-external-json-file/47638)

<div class="topic-metadata">

**Author:** [@OmkarNodered](https://discourse.nodered.org/u/OmkarNodered)\
**Replies:** 11\
**Last updated:** [25 June 2021 10:05 UTC](https://discourse.nodered.org/t/node-properties-stored-in-external-json-file/47638 "2021-06-25T10:05:24Z")

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I have created a flow which reads the data from mongo db and dump them into csv file. I want to configure any of node's property which resides in the external json. So what I would like to do is read the properties from…

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## [Context variable holding other context variables](https://discourse.nodered.org/t/context-variable-holding-other-context-variables/47624)

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**Author:** [@krambriw](https://discourse.nodered.org/u/krambriw)\
**Replies:** 13\
**Last updated:** [25 June 2021 09:39 UTC](https://discourse.nodered.org/t/context-variable-holding-other-context-variables/47624 "2021-06-25T09:39:11Z")

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I have a context variable and would like to create a JSON object as a new context variable where the previous context variable value is inserted. How should that be written? Imagine the simple example below The first i…

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## [Interaction between Node-RED Editor and Runtime](https://discourse.nodered.org/t/interaction-between-node-red-editor-and-runtime/47639)

<div class="topic-metadata">

**Author:** [@boehand](https://discourse.nodered.org/u/boehand)\
**Replies:** 0\
**Last updated:** [25 June 2021 09:28 UTC](https://discourse.nodered.org/t/interaction-between-node-red-editor-and-runtime/47639 "2021-06-25T09:28:50Z")

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Hi Nick, hi Node-RED-Developers, maybe you could help me and share with me some backgrounds of Node-RED. My question is: How is the interaction between the Node-RED-Editor and the Node-RED-Runtime? As I understood rig…

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## [Two input node tnen use one node to write two value to array?](https://discourse.nodered.org/t/two-input-node-tnen-use-one-node-to-write-two-value-to-array/47635)

<div class="topic-metadata">

**Author:** [@jlian168](https://discourse.nodered.org/u/jlian168)\
**Replies:** 1\
**Last updated:** [25 June 2021 08:52 UTC](https://discourse.nodered.org/t/two-input-node-tnen-use-one-node-to-write-two-value-to-array/47635 "2021-06-25T08:52:51Z")

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Dear Sir : Like Title, My mean is : I hv twoo input is ina and inb. When I input a value to ina and inb. Then I press a node that the two value can into array then send out. I dont know what kind of node I can use or…

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