# Latest

**URL:** https://discourse.nodered.org/latest.md?page=645

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

**Page:** 646

---

## [How does the flow context work in a subflow?](https://discourse.nodered.org/t/how-does-the-flow-context-work-in-a-subflow/57290)

<div class="topic-metadata">

**Author:** [@Timmiej93](https://discourse.nodered.org/u/Timmiej93)\
**Replies:** 9\
**Last updated:** [27 January 2022 13:08 UTC](https://discourse.nodered.org/t/how-does-the-flow-context-work-in-a-subflow/57290 "2022-01-27T13:08:20Z")

</div>

I found a couple of discussions about this, but the info is usually pretty unclear. I found this text: The nodes in a subflow can use flow context, bit it is scoped to the nodes in the subflow, not the flow the instance …

---

## [Protobuf encode/decode into JSON](https://discourse.nodered.org/t/protobuf-encode-decode-into-json/57276)

<div class="topic-metadata">

**Author:** [@SumeetBulani](https://discourse.nodered.org/u/SumeetBulani)\
**Replies:** 3\
**Last updated:** [27 January 2022 12:56 UTC](https://discourse.nodered.org/t/protobuf-encode-decode-into-json/57276 "2022-01-27T12:56:25Z")

</div>

Hello guys, I am trying to convert Proto format into JSON using the protobuf node. However, I am getting the error Illegal wire format, protobuf file not ready, Wire format is invalid: Error: illegal buffer. Any idea o…

---

## [Chrome can view Annke C800 IP camera image but HTTP Request gets 401 response](https://discourse.nodered.org/t/chrome-can-view-annke-c800-ip-camera-image-but-http-request-gets-401-response/57156)

<div class="topic-metadata">

**Author:** [@nygma2004](https://discourse.nodered.org/u/nygma2004)\
**Replies:** 40\
**Last updated:** [27 January 2022 11:45 UTC](https://discourse.nodered.org/t/chrome-can-view-annke-c800-ip-camera-image-but-http-request-gets-401-response/57156 "2022-01-27T11:45:27Z")

</div>

Hi Guys, This issue is with an Annke C800 IP camera. I am trying to access the still image using the HTTP URL. I tested this URL in Chrome, and also in Edge and it returns the still image: http://admin:password@192.168.…

---

## [Hide/Show elements in a pdf with node-red-contrib-pdfmake](https://discourse.nodered.org/t/hide-show-elements-in-a-pdf-with-node-red-contrib-pdfmake/57312)

<div class="topic-metadata">

**Author:** [@Lena](https://discourse.nodered.org/u/Lena)\
**Replies:** 3\
**Last updated:** [27 January 2022 10:43 UTC](https://discourse.nodered.org/t/hide-show-elements-in-a-pdf-with-node-red-contrib-pdfmake/57312 "2022-01-27T10:43:49Z")

</div>

Hello, I´m searching for a method to show/ hide elements in a pdf. I would like to create a pdf with 5 different "Data-Groups" the user can decide in the dashboard which data should be includes in the pdf report. Every…

---

## [Reading retained mqtt messages for use in function](https://discourse.nodered.org/t/reading-retained-mqtt-messages-for-use-in-function/57320)

<div class="topic-metadata">

**Author:** [@binderth](https://discourse.nodered.org/u/binderth)\
**Replies:** 3\
**Last updated:** [27 January 2022 10:33 UTC](https://discourse.nodered.org/t/reading-retained-mqtt-messages-for-use-in-function/57320 "2022-01-27T10:33:14Z")

</div>

In my use case I need to send two attributes to a receiver (a high and a low value). I get both values in two seperate (retained) MQTT messages in two topics. If either attribute changes, I want to send both to the recei…

---

## [Trivial problem getting INPUTs as UPDATE TO MSSQL](https://discourse.nodered.org/t/trivial-problem-getting-inputs-as-update-to-mssql/57317)

<div class="topic-metadata">

**Author:** [@Aimovoria](https://discourse.nodered.org/u/Aimovoria)\
**Replies:** 1\
**Last updated:** [27 January 2022 08:45 UTC](https://discourse.nodered.org/t/trivial-problem-getting-inputs-as-update-to-mssql/57317 "2022-01-27T08:45:47Z")

</div>

Hi there guys, I'm completely new to the world of Revolution PI and started to work my way thru and already got stopped on a kinda trivial problem that I can't pass :), BACKGROUND: I created database - RevPi with thre…

---

## [Generate CSV data file Every 30 minutes](https://discourse.nodered.org/t/generate-csv-data-file-every-30-minutes/57185)

<div class="topic-metadata">

**Author:** [@littlestupid](https://discourse.nodered.org/u/littlestupid)\
**Replies:** 17\
**Last updated:** [27 January 2022 08:29 UTC](https://discourse.nodered.org/t/generate-csv-data-file-every-30-minutes/57185 "2022-01-27T08:29:11Z")

</div>

Dear Node-RED colleague, I am not expert on Node-RED & other programming language. As per attach Flow I would like someone to enlighten me, is there any possible to create the folder every 30minutes? I need a clue Auto…

---

## [How to build simple spring boot application using Node-red](https://discourse.nodered.org/t/how-to-build-simple-spring-boot-application-using-node-red/57213)

<div class="topic-metadata">

**Author:** [@vinaykumar.v](https://discourse.nodered.org/u/vinaykumar.v)\
**Replies:** 3\
**Last updated:** [27 January 2022 08:13 UTC](https://discourse.nodered.org/t/how-to-build-simple-spring-boot-application-using-node-red/57213 "2022-01-27T08:13:54Z")

</div>

Hi I am Vinay, I did not understand how to run spring boot application using Node-red platform. Simple spring boot application code is shown in the link below I have downloaded " java function node " and " jar funct…

---

## [TypeError: Cannot read property 'schema' of undefined](https://discourse.nodered.org/t/typeerror-cannot-read-property-schema-of-undefined/57307)

<div class="topic-metadata">

**Author:** [@brudal1](https://discourse.nodered.org/u/brudal1)\
**Replies:** 2\
**Last updated:** [27 January 2022 07:53 UTC](https://discourse.nodered.org/t/typeerror-cannot-read-property-schema-of-undefined/57307 "2022-01-27T07:53:45Z")

</div>

Hello, i want to write some Values in a Influx Database (V1.8) If i send this, it works: { "\_msgid": "add6566.b6dd4a8", "payload": { "enaNewBatchData": true, "reqNewBatchData": false, "aknBatchData": false, …

---

## [How to create REST API that stores the payload to Kafka and send HTTP response only after successful storage?](https://discourse.nodered.org/t/how-to-create-rest-api-that-stores-the-payload-to-kafka-and-send-http-response-only-after-successful-storage/57255)

<div class="topic-metadata">

**Author:** [@aj\_dev](https://discourse.nodered.org/u/aj_dev)\
**Replies:** 9\
**Last updated:** [27 January 2022 07:28 UTC](https://discourse.nodered.org/t/how-to-create-rest-api-that-stores-the-payload-to-kafka-and-send-http-response-only-after-successful-storage/57255 "2022-01-27T07:28:32Z")

</div>

Hi I am new to node-red. I am using node-red to accept HTTP Post from another server. I need to respond to the with the success or failure status (200 or 400 response). If the received message is successfully stored to …

---

## [Warp Speed Indicator - Changing background colour according to payload value. CSS only](https://discourse.nodered.org/t/warp-speed-indicator-changing-background-colour-according-to-payload-value-css-only/57256)

<div class="topic-metadata">

**Author:** [@jbudd](https://discourse.nodered.org/u/jbudd)\
**Replies:** 8\
**Last updated:** [27 January 2022 07:22 UTC](https://discourse.nodered.org/t/warp-speed-indicator-changing-background-colour-according-to-payload-value-css-only/57256 "2022-01-27T07:22:32Z")

</div>

The background colour of this template smoothly transitions green - yellow - red as msg.payload varies from 0 to 10. Suggested use is as a weather station display, the colour reflecting the temperature. Would have to tw…

---

## [Possible issue with mySQL date column and JSONATA $spread() function](https://discourse.nodered.org/t/possible-issue-with-mysql-date-column-and-jsonata-spread-function/57257)

<div class="topic-metadata">

**Author:** [@rakgupta](https://discourse.nodered.org/u/rakgupta)\
**Replies:** 12\
**Last updated:** [26 January 2022 23:58 UTC](https://discourse.nodered.org/t/possible-issue-with-mysql-date-column-and-jsonata-spread-function/57257 "2022-01-26T23:58:44Z")

</div>

Apologies in advance for a the long post. My data is stored in a mySQL database with one of the fields being a date field (TIMESTAMP). My flow queries the database and returns the selected values that look like this: …

---

## [Exec node python \[Errno 13\] Permission denied - How to set execute permissions](https://discourse.nodered.org/t/exec-node-python-errno-13-permission-denied-how-to-set-execute-permissions/57293)

<div class="topic-metadata">

**Author:** [@luthis](https://discourse.nodered.org/u/luthis)\
**Replies:** 4\
**Last updated:** [26 January 2022 22:34 UTC](https://discourse.nodered.org/t/exec-node-python-errno-13-permission-denied-how-to-set-execute-permissions/57293 "2022-01-26T22:34:12Z")

</div>

Hi All, I think this is probably an easy solve. node-red is running as user node-js-node-red: \[st@luthis /\]$ ps -ef | grep node nodejs-+ 417957 1 0 09:47 ? 00:00:02 node-red I wrote a file out using w…

---

## [How to add the individual serial output into CSV. file](https://discourse.nodered.org/t/how-to-add-the-individual-serial-output-into-csv-file/57203)

<div class="topic-metadata">

**Author:** [@51fei](https://discourse.nodered.org/u/51fei)\
**Replies:** 7\
**Last updated:** [26 January 2022 21:57 UTC](https://discourse.nodered.org/t/how-to-add-the-individual-serial-output-into-csv-file/57203 "2022-01-26T21:57:44Z")

</div>

My project had serval sensors like humidity, temperature, and EC value. I want to store all the data one column by one column in an Excel sheet. I had followed this tutorial: Auto Logger: log data in daily CSV files (flo…

---

## [Modify datetime in array for proper chart ui output](https://discourse.nodered.org/t/modify-datetime-in-array-for-proper-chart-ui-output/57287)

<div class="topic-metadata">

**Author:** [@mfassier](https://discourse.nodered.org/u/mfassier)\
**Replies:** 3\
**Last updated:** [26 January 2022 21:50 UTC](https://discourse.nodered.org/t/modify-datetime-in-array-for-proper-chart-ui-output/57287 "2022-01-26T21:50:58Z")

</div>

I feel like this has been asked many times, yet none of the existing thread I could find speak to my issue specifically. There is something I don't understand in how to handle the data coming from an SQL query that I wan…

---

## [How to configure "config" properties for a subflow](https://discourse.nodered.org/t/how-to-configure-config-properties-for-a-subflow/57274)

<div class="topic-metadata">

**Author:** [@thib3113](https://discourse.nodered.org/u/thib3113)\
**Replies:** 4\
**Last updated:** [26 January 2022 21:42 UTC](https://discourse.nodered.org/t/how-to-configure-config-properties-for-a-subflow/57274 "2022-01-26T21:42:48Z")

</div>

Hello all, I'm trying to create some subflow for my new node . My problem was, one of my node need a "config" property (a global configuration node) . Can I use this configuration node in the subflow properties ? I d…

---

## [Payload concatenate from slider input](https://discourse.nodered.org/t/payload-concatenate-from-slider-input/57281)

<div class="topic-metadata">

**Author:** [@SoxxZ](https://discourse.nodered.org/u/SoxxZ)\
**Replies:** 4\
**Last updated:** [26 January 2022 20:06 UTC](https://discourse.nodered.org/t/payload-concatenate-from-slider-input/57281 "2022-01-26T20:06:45Z")

</div>

i have 3 sliders on the node red dashboard. one for brightness, one for saturation, and one for speed, of a rgb strip animation(done outside node red). i want to get these 3 values, and concatenate them into one payload …

---

## [Password management with nodered](https://discourse.nodered.org/t/password-management-with-nodered/56447)

<div class="topic-metadata">

**Author:** [@denissanga](https://discourse.nodered.org/u/denissanga)\
**Replies:** 3\
**Last updated:** [26 January 2022 20:01 UTC](https://discourse.nodered.org/t/password-management-with-nodered/56447 "2022-01-26T20:01:41Z")

</div>

I would create a node red project for password management using an encrypted db have some one a tutorial? many thanks

---

## [How I can trigger inject node with input signal?](https://discourse.nodered.org/t/how-i-can-trigger-inject-node-with-input-signal/57229)

<div class="topic-metadata">

**Author:** [@maliheh.amirfakhry](https://discourse.nodered.org/u/maliheh.amirfakhry)\
**Replies:** 2\
**Last updated:** [26 January 2022 19:53 UTC](https://discourse.nodered.org/t/how-i-can-trigger-inject-node-with-input-signal/57229 "2022-01-26T19:53:20Z")

</div>

Hi, First of all, I have to say thank you for accepting me to this forum and sorry if my English is bad. I have a project with node-red and raspberry pi, I want to send an input signal to raspberry pi from a PLC and see…

---

## [Allow to get comms connections by Module APIs to send notifications to client](https://discourse.nodered.org/t/allow-to-get-comms-connections-by-module-apis-to-send-notifications-to-client/56530)

<div class="topic-metadata">

**Author:** [@bubus](https://discourse.nodered.org/u/bubus)\
**Replies:** 6\
**Last updated:** [26 January 2022 19:00 UTC](https://discourse.nodered.org/t/allow-to-get-comms-connections-by-module-apis-to-send-notifications-to-client/56530 "2022-01-26T19:00:11Z")

</div>

Hello, Is it possible to add getter for connections inside @node-red/runtime/lib/api/comms.js or is there some reason why it is not implemented? The getter is as simple as getConnections: function() { return co…

---

## [Loading CSV Files from a network drive](https://discourse.nodered.org/t/loading-csv-files-from-a-network-drive/57268)

<div class="topic-metadata">

**Author:** [@pete\_hart](https://discourse.nodered.org/u/pete_hart)\
**Replies:** 1\
**Last updated:** [26 January 2022 18:46 UTC](https://discourse.nodered.org/t/loading-csv-files-from-a-network-drive/57268 "2022-01-26T18:46:53Z")

</div>

Hey All, Looking to use NR to monitor a network folder, and when a csv (of a known name) is loaded in that folder, use the File-In node to load that file. I have tried everything I can thing to access this network file,…

---

## [Cycle through outputs](https://discourse.nodered.org/t/cycle-through-outputs/57261)

<div class="topic-metadata">

**Author:** [@vantech](https://discourse.nodered.org/u/vantech)\
**Replies:** 5\
**Last updated:** [26 January 2022 18:26 UTC](https://discourse.nodered.org/t/cycle-through-outputs/57261 "2022-01-26T18:26:54Z")

</div>

Hi, I am trying to program the below scenario which in essence fires a different output every time a button is pressed, in a loop - the purpose is for scene selection with a Shelly device. Button press 1 (this is a she…

---

## [Stop ui-table from auto-numbering column](https://discourse.nodered.org/t/stop-ui-table-from-auto-numbering-column/57159)

<div class="topic-metadata">

**Author:** [@Jdo300](https://discourse.nodered.org/u/Jdo300)\
**Replies:** 8\
**Last updated:** [26 January 2022 18:07 UTC](https://discourse.nodered.org/t/stop-ui-table-from-auto-numbering-column/57159 "2022-01-26T18:07:18Z")

</div>

I'm using the ui-table node to create a sorted list of electrical loads for a dashboard display. The first column in the table is the Priority number, which is loaded from another source for display. The priority number …

---

## [Convert number into binary, then split in half and convert again](https://discourse.nodered.org/t/convert-number-into-binary-then-split-in-half-and-convert-again/57279)

<div class="topic-metadata">

**Author:** [@json\_lame](https://discourse.nodered.org/u/json_lame)\
**Replies:** 2\
**Last updated:** [26 January 2022 18:03 UTC](https://discourse.nodered.org/t/convert-number-into-binary-then-split-in-half-and-convert-again/57279 "2022-01-26T18:03:10Z")

</div>

Hi there I've got that number: 11580 In binary this is: 0010 1101 0011 1100 Now I need to split this in half, like this: 0010 1101 and 0011 1100, then decode this into decimal and it should be 45 and 60. Could someon…

---

## [NBrowser / Node Red Out](https://discourse.nodered.org/t/nbrowser-node-red-out/57263)

<div class="topic-metadata">

**Author:** [@Lafayette](https://discourse.nodered.org/u/Lafayette)\
**Replies:** 5\
**Last updated:** [26 January 2022 16:02 UTC](https://discourse.nodered.org/t/nbrowser-node-red-out/57263 "2022-01-26T16:02:42Z")

</div>

Hi, Since I have installed the node-red-contrib-nbrowser node Node Red doesn't start. I have this message : node-red-docker@2.1.4 start node $NODE\_OPTIONS node\_modules/node-red/red.js $FLOWS "--userDir" "/data" /usr…

---

## [Sum up values based on date](https://discourse.nodered.org/t/sum-up-values-based-on-date/57235)

<div class="topic-metadata">

**Author:** [@mfassier](https://discourse.nodered.org/u/mfassier)\
**Replies:** 6\
**Last updated:** [26 January 2022 15:51 UTC](https://discourse.nodered.org/t/sum-up-values-based-on-date/57235 "2022-01-26T15:51:03Z")

</div>

Hi. A simple issue that eludes my meager knowledge: User inputs a number (egg count). The input is timestamped and is recalled for display in a chart (Show how many eggs for the last 10 days, per day). This works well, a…

---

## [Node-red-contrib-alexa-remote2 migration](https://discourse.nodered.org/t/node-red-contrib-alexa-remote2-migration/57212)

<div class="topic-metadata">

**Author:** [@ghayne](https://discourse.nodered.org/u/ghayne)\
**Replies:** 11\
**Last updated:** [26 January 2022 14:53 UTC](https://discourse.nodered.org/t/node-red-contrib-alexa-remote2-migration/57212 "2022-01-26T14:53:38Z")

</div>

I am currently using this (It still works for me!) on A Raspberry Pi. And want to migrate to this on an Ubuntu PC. I'm moving all the nodes to the new machine. My question: Can I install the "applestrudel" versio…

---

## [Accessing the runtime settings from a function node](https://discourse.nodered.org/t/accessing-the-runtime-settings-from-a-function-node/57242)

<div class="topic-metadata">

**Author:** [@davec1001](https://discourse.nodered.org/u/davec1001)\
**Replies:** 8\
**Last updated:** [26 January 2022 14:45 UTC](https://discourse.nodered.org/t/accessing-the-runtime-settings-from-a-function-node/57242 "2022-01-26T14:45:53Z")

</div>

Hi, Another quick obscure question (Sorry!) Is it possible to access the settings (from settings.js) in a function node? I am trying to use the httpAdmin api to get current list of flows and I need the port for the U…

---

## [Simply Convert Decimal To Hex](https://discourse.nodered.org/t/simply-convert-decimal-to-hex/57264)

<div class="topic-metadata">

**Author:** [@Limninzz](https://discourse.nodered.org/u/Limninzz)\
**Replies:** 2\
**Last updated:** [26 January 2022 14:32 UTC](https://discourse.nodered.org/t/simply-convert-decimal-to-hex/57264 "2022-01-26T14:32:07Z")

</div>

Hello, I'm currently new at this and any form of coding language. I've been searching online about the answers and stuck. Could someone teach me how to simply change a Dec Output number to Hex ? Thank you.

---

## [Omron FINS Write & Buffer-Parser String](https://discourse.nodered.org/t/omron-fins-write-buffer-parser-string/57246)

<div class="topic-metadata">

**Author:** [@Javier](https://discourse.nodered.org/u/Javier)\
**Replies:** 2\
**Last updated:** [26 January 2022 11:15 UTC](https://discourse.nodered.org/t/omron-fins-write-buffer-parser-string/57246 "2022-01-26T11:15:46Z")

</div>

Hi all, I am trying to send 1 string variable to an omron "CP1L" PLC My goal in this test is to send 8 characters: "abcdefghij" to the 5 memory channels D2110...D2114 2 characters on each channel However, I only mana…

[Previous page](https://discourse.nodered.org/latest.md?page=644)

[Next page](https://discourse.nodered.org/latest.md?page=646)