# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=931

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

**Page:** 932

---

## [Access Node properties](https://discourse.nodered.org/t/access-node-properties/5445)

<div class="topic-metadata">

**Author:** [@Kampfwurst](https://discourse.nodered.org/u/Kampfwurst)\
**Replies:** 1\
**Last updated:** [3 December 2018 17:16 UTC](https://discourse.nodered.org/t/access-node-properties/5445 "2018-12-03T17:16:07Z")

</div>

Hi, I have a question. Im using the OPCUA IIoT Server ASO node. I would like to create a subflow and change the "Node-Id" and the "Reference Id" from outside of the subflow. How can i do this? Thanks Chris.

---

## [Serial && status node on boot / start](https://discourse.nodered.org/t/serial-status-node-on-boot-start/5419)

<div class="topic-metadata">

**Author:** [@RogierQ](https://discourse.nodered.org/u/RogierQ)\
**Replies:** 6\
**Last updated:** [3 December 2018 17:08 UTC](https://discourse.nodered.org/t/serial-status-node-on-boot-start/5419 "2018-12-03T17:08:06Z")

</div>

On boot of my raspberry and node red i want to know if my serial port is connected to my arduino. So i connected the status node to the serial port and to mqtt, but no output Then i connected the debug to the status no…

---

## [I have some questions relating database](https://discourse.nodered.org/t/i-have-some-questions-relating-database/2323)

<div class="topic-metadata">

**Author:** [@eleckits](https://discourse.nodered.org/u/eleckits)\
**Replies:** 57\
**Last updated:** [3 December 2018 12:41 UTC](https://discourse.nodered.org/t/i-have-some-questions-relating-database/2323 "2018-12-03T12:41:40Z")

</div>

Hi, there I am very new to node red and this is first message here I want to build database then want to store some values inside database and then want to read database and compare with inject value then if it is same…

---

## [Cannot access Mosquitto over Internet through cloudflare](https://discourse.nodered.org/t/cannot-access-mosquitto-over-internet-through-cloudflare/5413)

<div class="topic-metadata">

**Author:** [@Ian](https://discourse.nodered.org/u/Ian)\
**Replies:** 5\
**Last updated:** [3 December 2018 11:49 UTC](https://discourse.nodered.org/t/cannot-access-mosquitto-over-internet-through-cloudflare/5413 "2018-12-03T11:49:00Z")

</div>

Hi Possibly off topic but I struggling with a problem I have been unable to resolve. My setup:- Node-Red on a raspberry Pi. My mosquitto mqtt is on the same Pi. Emoncms self hosted on raspberry Pi. The access to bo…

---

## [README - no longer showing on node-red website](https://discourse.nodered.org/t/readme-no-longer-showing-on-node-red-website/5404)

<div class="topic-metadata">

**Author:** [@Sheaffy](https://discourse.nodered.org/u/Sheaffy)\
**Replies:** 1\
**Last updated:** [2 December 2018 21:22 UTC](https://discourse.nodered.org/t/readme-no-longer-showing-on-node-red-website/5404 "2018-12-02T21:22:48Z")

</div>

Hi! not sure what's happened here, however the readme is not showing on node-red (Link) it shows just fine on npm (Link). I only just noticed this morning. Does anyone have any ideas?

---

## [Http-request node in core produces fault](https://discourse.nodered.org/t/http-request-node-in-core-produces-fault/5270)

<div class="topic-metadata">

**Author:** [@hoekbrwr](https://discourse.nodered.org/u/hoekbrwr)\
**Replies:** 8\
**Last updated:** [2 December 2018 20:24 UTC](https://discourse.nodered.org/t/http-request-node-in-core-produces-fault/5270 "2018-12-02T20:24:15Z")

</div>

I have a node which has been broken. Now I get an error message like this: TypeError: tls.convertNPNProtocols is not a function I have done a full upgrade on my Raspi, but ran in the end into a few unsolvable problems a…

---

## [The best way to notice lack of message?](https://discourse.nodered.org/t/the-best-way-to-notice-lack-of-message/5282)

<div class="topic-metadata">

**Author:** [@Marooned](https://discourse.nodered.org/u/Marooned)\
**Replies:** 20\
**Last updated:** [2 December 2018 19:43 UTC](https://discourse.nodered.org/t/the-best-way-to-notice-lack-of-message/5282 "2018-12-02T19:43:57Z")

</div>

Hi there What will you propose to inform user if the message with known topic won't show for some time? I'm using rpi-ds18b20 node to periodically read all my DS' sensors. The network is quite big (I know, 1w was not d…

---

## [Export data to pdf file](https://discourse.nodered.org/t/export-data-to-pdf-file/5090)

<div class="topic-metadata">

**Author:** [@hathemi](https://discourse.nodered.org/u/hathemi)\
**Replies:** 3\
**Last updated:** [2 December 2018 19:35 UTC](https://discourse.nodered.org/t/export-data-to-pdf-file/5090 "2018-12-02T19:35:18Z")

</div>

i wonder if it's possible to save data typed from a modal to a pdf file ? i did something similar with .csv file. i have searched a lot about pdf in node-red but nothing is clear yet.

---

## [Using node-RED to mock out restful webservices](https://discourse.nodered.org/t/using-node-red-to-mock-out-restful-webservices/5414)

<div class="topic-metadata">

**Author:** [@anwarbashir](https://discourse.nodered.org/u/anwarbashir)\
**Replies:** 4\
**Last updated:** [2 December 2018 19:22 UTC](https://discourse.nodered.org/t/using-node-red-to-mock-out-restful-webservices/5414 "2018-12-02T19:22:26Z")

</div>

I am trying to create a restful webservice that returns parameters. I found a tutorial that I think would assist me but I am unable to find the file storage node, see point 3 https://www.arhs-group.com/using-node-red-to…

---

## [Reading max31855](https://discourse.nodered.org/t/reading-max31855/5394)

<div class="topic-metadata">

**Author:** [@mason08](https://discourse.nodered.org/u/mason08)\
**Replies:** 2\
**Last updated:** [2 December 2018 14:51 UTC](https://discourse.nodered.org/t/reading-max31855/5394 "2018-12-02T14:51:42Z")

</div>

im trying to use a max31855 with node red. Is there a node for it?

---

## [Data reading and plotting](https://discourse.nodered.org/t/data-reading-and-plotting/5401)

<div class="topic-metadata">

**Author:** [@IOT](https://discourse.nodered.org/u/IOT)\
**Replies:** 5\
**Last updated:** [2 December 2018 11:43 UTC](https://discourse.nodered.org/t/data-reading-and-plotting/5401 "2018-12-02T11:43:19Z")

</div>

Hello! I am working on a project in which i need to send analogue value with delay 1 ms to MQTT and plot that value into the graph but unfortunately i failed after several tries.Kindly help me how to solve this issue. …

---

## [On flow - multiple access](https://discourse.nodered.org/t/on-flow-multiple-access/5038)

<div class="topic-metadata">

**Author:** [@jhon.zambrano](https://discourse.nodered.org/u/jhon.zambrano)\
**Replies:** 1\
**Last updated:** [2 December 2018 11:35 UTC](https://discourse.nodered.org/t/on-flow-multiple-access/5038 "2018-12-02T11:35:21Z")

</div>

hi, i have a flow as show it, is a retransmision Lora messages schema. This flow no have GUI. i wanna know what happen if other flows access to this at the same time or while the schema is running? has nodered multi thre…

---

## [Resolve text from number](https://discourse.nodered.org/t/resolve-text-from-number/5177)

<div class="topic-metadata">

**Author:** [@martinschki](https://discourse.nodered.org/u/martinschki)\
**Replies:** 13\
**Last updated:** [2 December 2018 11:10 UTC](https://discourse.nodered.org/t/resolve-text-from-number/5177 "2018-12-02T11:10:57Z")

</div>

Hello, I receive a status info from my PLC in form of a number. How can I translate that number into a describing text for display? For example, I receive "140" and the corresponding info text is "Automatic Mode". How …

---

## [Retained message with msg.payload returns Function tried to send a message of type string](https://discourse.nodered.org/t/retained-message-with-msg-payload-returns-function-tried-to-send-a-message-of-type-string/5376)

<div class="topic-metadata">

**Author:** [@MANNAS3](https://discourse.nodered.org/u/MANNAS3)\
**Replies:** 5\
**Last updated:** [2 December 2018 09:13 UTC](https://discourse.nodered.org/t/retained-message-with-msg-payload-returns-function-tried-to-send-a-message-of-type-string/5376 "2018-12-02T09:13:58Z")

</div>

I have a dashboard button node in which it is connected to a function node and defined the context.global.stat to retain the state of the button across function node, also have another mqtt in node to gather sensor data …

---

## [Pause incoming payload with function and switch node](https://discourse.nodered.org/t/pause-incoming-payload-with-function-and-switch-node/5370)

<div class="topic-metadata">

**Author:** [@DevThePhoenix](https://discourse.nodered.org/u/DevThePhoenix)\
**Replies:** 5\
**Last updated:** [2 December 2018 06:21 UTC](https://discourse.nodered.org/t/pause-incoming-payload-with-function-and-switch-node/5370 "2018-12-02T06:21:58Z")

</div>

i want to Pause a payload coming from mqtt with a switch (Off mode), and want to continue payload coming from mqtt with switch (On mode)

---

## [Weird Problem With Deleted Flows](https://discourse.nodered.org/t/weird-problem-with-deleted-flows/5387)

<div class="topic-metadata">

**Author:** [@seth350](https://discourse.nodered.org/u/seth350)\
**Replies:** 3\
**Last updated:** [2 December 2018 04:53 UTC](https://discourse.nodered.org/t/weird-problem-with-deleted-flows/5387 "2018-12-02T04:53:13Z")

</div>

Hey guys, I am not sure how this happened or what could have caused this, so I will give you the sequence of events. Two RPis running the same flow, connected to the same network. I install another RPi running the sam…

---

## [Inject node with 1s interval not being launched 3600 times per hour](https://discourse.nodered.org/t/inject-node-with-1s-interval-not-being-launched-3600-times-per-hour/5332)

<div class="topic-metadata">

**Author:** [@abajolle](https://discourse.nodered.org/u/abajolle)\
**Replies:** 12\
**Last updated:** [1 December 2018 09:19 UTC](https://discourse.nodered.org/t/inject-node-with-1s-interval-not-being-launched-3600-times-per-hour/5332 "2018-12-01T09:19:21Z")

</div>

Hi Node-REDers ! On one of my flow I am using an inject node with an interval of 1s, to check the status of a machine and calculate later on some indicators like its availability. I have another inject node with an int…

---

## [Dim lights based on current intensity](https://discourse.nodered.org/t/dim-lights-based-on-current-intensity/5272)

<div class="topic-metadata">

**Author:** [@biochemguy](https://discourse.nodered.org/u/biochemguy)\
**Replies:** 10\
**Last updated:** [1 December 2018 04:01 UTC](https://discourse.nodered.org/t/dim-lights-based-on-current-intensity/5272 "2018-12-01T04:01:57Z")

</div>

Hi, I am new to Node-Red and have been able to do basic automations with home assistant. However, I am having trouble formatting a function to dim lights. Basically, I want to determine the current brightness of the lig…

---

## [Running a script using the exec node to reboot chromium!!](https://discourse.nodered.org/t/running-a-script-using-the-exec-node-to-reboot-chromium/5357)

<div class="topic-metadata">

**Author:** [@cjmaverickforever](https://discourse.nodered.org/u/cjmaverickforever)\
**Replies:** 2\
**Last updated:** [1 December 2018 02:30 UTC](https://discourse.nodered.org/t/running-a-script-using-the-exec-node-to-reboot-chromium/5357 "2018-12-01T02:30:50Z")

</div>

Using the exec node I'm able to run commands just fine, but when I try to run a script that loads chromium in kiosk mode using the matchbox window manager I get unable to open display errors. When I run the same script …

---

## [Where does the node-red store its credentials with azure-iot cloud?](https://discourse.nodered.org/t/where-does-the-node-red-store-its-credentials-with-azure-iot-cloud/5229)

<div class="topic-metadata">

**Author:** [@manal](https://discourse.nodered.org/u/manal)\
**Replies:** 1\
**Last updated:** [30 November 2018 22:33 UTC](https://discourse.nodered.org/t/where-does-the-node-red-store-its-credentials-with-azure-iot-cloud/5229 "2018-11-30T22:33:58Z")

</div>

Hey there, where does the node-red store its credentials, in particular with Azure IoT cloud? does it store all credentials in one place? thanks in advance

---

## [NodeRed thingspeak payload](https://discourse.nodered.org/t/nodered-thingspeak-payload/5330)

<div class="topic-metadata">

**Author:** [@yoyo89](https://discourse.nodered.org/u/yoyo89)\
**Replies:** 10\
**Last updated:** [30 November 2018 21:05 UTC](https://discourse.nodered.org/t/nodered-thingspeak-payload/5330 "2018-11-30T21:05:35Z")

</div>

Hello People im trying to send data from TTN to things speak but my payload is something like that {"payload":"F1:0.000,F2:0.000,F3:0.000,F4:0.000,"} ,thethingsspeak42 didnt work for me in node Red but i used something…

---

## [RFID-Locker (array-buffer, script)](https://discourse.nodered.org/t/rfid-locker-array-buffer-script/5333)

<div class="topic-metadata">

**Author:** [@Andre](https://discourse.nodered.org/u/Andre)\
**Replies:** 2\
**Last updated:** [30 November 2018 19:39 UTC](https://discourse.nodered.org/t/rfid-locker-array-buffer-script/5333 "2018-11-30T19:39:24Z")

</div>

Good day, I want to rebuild the locker at my gym from old-fashioned keys to RFID lockers. The necessary hardware is already installed with electric locks etc. The goal is that someone logs in with an rfid card, the nu…

---

## [ER\_HOST\_NOT\_PRIVILEGED](https://discourse.nodered.org/t/er-host-not-privileged/5359)

<div class="topic-metadata">

**Author:** [@zayas](https://discourse.nodered.org/u/zayas)\
**Replies:** 2\
**Last updated:** [30 November 2018 17:33 UTC](https://discourse.nodered.org/t/er-host-not-privileged/5359 "2018-11-30T17:33:23Z")

</div>

Hello, I am trying to communicate the node network with mysql and I get the following error: ER\_HOST\_NOT\_PRIVILEGED, why is it? In MySQL I have the users with all the privileges and I use it through the MySQL server, but…

---

## [MySQL node "connection refused" error](https://discourse.nodered.org/t/mysql-node-connection-refused-error/5342)

<div class="topic-metadata">

**Author:** [@aanand](https://discourse.nodered.org/u/aanand)\
**Replies:** 3\
**Last updated:** [30 November 2018 16:27 UTC](https://discourse.nodered.org/t/mysql-node-connection-refused-error/5342 "2018-11-30T16:27:47Z")

</div>

Guys, I have installed MYSQL node. After configuration of the details and deployment it will give "connection refused" error. Kindly help us to resolve this issue. Thanks & Regards, Aanand

---

## [Windows exec Node. start process in the foreground](https://discourse.nodered.org/t/windows-exec-node-start-process-in-the-foreground/5345)

<div class="topic-metadata">

**Author:** [@noemu](https://discourse.nodered.org/u/noemu)\
**Replies:** 4\
**Last updated:** [30 November 2018 16:09 UTC](https://discourse.nodered.org/t/windows-exec-node-start-process-in-the-foreground/5345 "2018-11-30T16:09:43Z")

</div>

hello, i want to launch some programs from my node-red server. My Problem is that the programs are running but i don't see the window. example: command: C:/WINDOWS/system32/notepad.exe i get a pid and if i lookup th…

---

## [Store Buffer to file](https://discourse.nodered.org/t/store-buffer-to-file/5351)

<div class="topic-metadata">

**Author:** [@abra](https://discourse.nodered.org/u/abra)\
**Replies:** 2\
**Last updated:** [30 November 2018 14:25 UTC](https://discourse.nodered.org/t/store-buffer-to-file/5351 "2018-11-30T14:25:51Z")

</div>

Is there any node that allows storing a Buffer to a file, keeping the binary format 1:1, without converting it to any JSON string or whatever?

---

## [Old Flow - New installation - Ghost nodes](https://discourse.nodered.org/t/old-flow-new-installation-ghost-nodes/5322)

<div class="topic-metadata">

**Author:** [@JoseGodinho](https://discourse.nodered.org/u/JoseGodinho)\
**Replies:** 20\
**Last updated:** [30 November 2018 13:17 UTC](https://discourse.nodered.org/t/old-flow-new-installation-ghost-nodes/5322 "2018-11-30T13:17:42Z")

</div>

Hello All Due to several issues I had to install a new Pi with a new installation. I am just using a old flow. for sure i am now installing the missing nodes. Node red is requiring nodes that albeit I had installed the…

---

## [Export flows into library creates file with out base name](https://discourse.nodered.org/t/export-flows-into-library-creates-file-with-out-base-name/5302)

<div class="topic-metadata">

**Author:** [@arunnattarayan](https://discourse.nodered.org/u/arunnattarayan)\
**Replies:** 3\
**Last updated:** [30 November 2018 12:48 UTC](https://discourse.nodered.org/t/export-flows-into-library-creates-file-with-out-base-name/5302 "2018-11-30T12:48:55Z")

</div>

Way to reproduce:- When we export a flow into the library and give file name with a trailing slash. That time Node-Red creates .json file with out base name. Impact We can't see the exported flow in import library optio…

---

## [How to optimize sending associativ array (filter payload)](https://discourse.nodered.org/t/how-to-optimize-sending-associativ-array-filter-payload/5246)

<div class="topic-metadata">

**Author:** [@dark\_vidor](https://discourse.nodered.org/u/dark_vidor)\
**Replies:** 7\
**Last updated:** [30 November 2018 09:58 UTC](https://discourse.nodered.org/t/how-to-optimize-sending-associativ-array-filter-payload/5246 "2018-11-30T09:58:06Z")

</div>

Hello, I have this payload (for exemple) : payload : \[\[0,"300",0,0,0,0,0\],\[0,0,0,0,0,0,0\]\] I would like to send : payload : {"0":{"1":300}} Also if my payload will be : payload : \[\[0,"300",0,"500",0,0,0\],\[0,0,"200",0,…

---

## [Exposing a HTTP node without SSL in secured NR](https://discourse.nodered.org/t/exposing-a-http-node-without-ssl-in-secured-nr/5300)

<div class="topic-metadata">

**Author:** [@lius](https://discourse.nodered.org/u/lius)\
**Replies:** 2\
**Last updated:** [30 November 2018 07:28 UTC](https://discourse.nodered.org/t/exposing-a-http-node-without-ssl-in-secured-nr/5300 "2018-11-30T07:28:21Z")

</div>

Dear Node-RED friends, Is it possible to expose an HTTP node in a secured Node-RED environment? Basically, I want to have all of NR's APIs and UI SSL-secured, but I need to make one particular endpoint available for a d…

[Previous page](https://discourse.nodered.org/c/general/7.md?page=930)

[Next page](https://discourse.nodered.org/c/general/7.md?page=932)