# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=543

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

**Page:** 544

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## [Python libraries in Node Red Flows](https://discourse.nodered.org/t/python-libraries-in-node-red-flows/46707)

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**Author:** [@cjbussey](https://discourse.nodered.org/u/cjbussey)\
**Replies:** 4\
**Last updated:** [5 June 2021 12:24 UTC](https://discourse.nodered.org/t/python-libraries-in-node-red-flows/46707 "2021-06-05T12:24:49Z")

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Hi All, I have a rotary encoder where the knob is illuminated by an RGB LED, both the encoder and the LED are controlled by a microcontroller connected to a Raspberry PI over i2c. The libraries supporting the rotary en…

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## [Open Chromium from EXEC node](https://discourse.nodered.org/t/open-chromium-from-exec-node/46734)

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**Author:** [@Nice\_to\_have](https://discourse.nodered.org/u/Nice_to_have)\
**Replies:** 0\
**Last updated:** [5 June 2021 12:07 UTC](https://discourse.nodered.org/t/open-chromium-from-exec-node/46734 "2021-06-05T12:07:44Z")

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Goodday, I know I can use the kiosk mode from startup, but I want to try it from the EXEC node in node red. I use this as the command: DISPLAY=:0 chromium-browser --kiosk --http://192.168.86.95:1880/worldmap --start-f…

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## [Grafana count entry](https://discourse.nodered.org/t/grafana-count-entry/46572)

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**Author:** [@vikozo](https://discourse.nodered.org/u/vikozo)\
**Replies:** 7\
**Last updated:** [5 June 2021 09:58 UTC](https://discourse.nodered.org/t/grafana-count-entry/46572 "2021-06-05T09:58:43Z")

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Hello i have again a Grafana Problem imagine time | status | Name solved John NOK vera solved John NOK John solved John solved vera so i would like to count on my database how many time Jo…

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## [Bug report, old version so maybe fixed, RPi3B](https://discourse.nodered.org/t/bug-report-old-version-so-maybe-fixed-rpi3b/46671)

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**Author:** [@tyeth](https://discourse.nodered.org/u/tyeth)\
**Replies:** 1\
**Last updated:** [5 June 2021 07:46 UTC](https://discourse.nodered.org/t/bug-report-old-version-so-maybe-fixed-rpi3b/46671 "2021-06-05T07:46:58Z")

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Apologies, I was half tempted to stick this on github but not sure if it's easily recreated, nor if it's a problem with the contrib module, is that possible? Anyway here's my rambling version: Importing some flows I've …

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## ["Search" - I'm not getting something](https://discourse.nodered.org/t/search-im-not-getting-something/46678)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 3\
**Last updated:** [4 June 2021 23:51 UTC](https://discourse.nodered.org/t/search-im-not-getting-something/46678 "2021-06-04T23:51:37Z")

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Hey folks. I am going through replacing a node with another one which is better suited. I search for it and the list of nodes is show. To keep things simple, I click on the top one, replace and repeat the search. Ok.…

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## [Debug buffer size](https://discourse.nodered.org/t/debug-buffer-size/46709)

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**Author:** [@ScheepersJohan](https://discourse.nodered.org/u/ScheepersJohan)\
**Replies:** 3\
**Last updated:** [4 June 2021 22:03 UTC](https://discourse.nodered.org/t/debug-buffer-size/46709 "2021-06-04T22:03:04Z")

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Hi, Are there a size limit for the debug buffer (amount of messages displayed in the debug)? If there is can it be adjusted? Thank you

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## [Value NaN on Node-red](https://discourse.nodered.org/t/value-nan-on-node-red/46665)

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**Author:** [@Alex95](https://discourse.nodered.org/u/Alex95)\
**Replies:** 1\
**Last updated:** [4 June 2021 21:16 UTC](https://discourse.nodered.org/t/value-nan-on-node-red/46665 "2021-06-04T21:16:22Z")

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Good evening to all. Before I tell you my problem I will tell you some details. Initially I have two Arduino which communicate with each other via LoRa due to the fact that I have connected them to two Dragino. So I have…

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## [Two instances of node red active](https://discourse.nodered.org/t/two-instances-of-node-red-active/46692)

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**Author:** [@CHLINDE](https://discourse.nodered.org/u/CHLINDE)\
**Replies:** 1\
**Last updated:** [4 June 2021 21:02 UTC](https://discourse.nodered.org/t/two-instances-of-node-red-active/46692 "2021-06-04T21:02:15Z")

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Hello! I got a raspberry pi for maintainance. To connect to the dashboard, I enter http://172.16.30.21: 1880 into firefox. Everything seems to be fine. But when I enter "http://172.16.30.21" without the port value, I r…

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## [Wifi not working when network cable is plugged in](https://discourse.nodered.org/t/wifi-not-working-when-network-cable-is-plugged-in/46660)

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**Author:** [@barry](https://discourse.nodered.org/u/barry)\
**Replies:** 8\
**Last updated:** [4 June 2021 20:31 UTC](https://discourse.nodered.org/t/wifi-not-working-when-network-cable-is-plugged-in/46660 "2021-06-04T20:31:42Z")

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Hi Guys I have a small network of click PLCs I'm monitoring inputs using Modbus My PLCc are addressed 192.168.11.--- The Server is addressed 192.168.63.1 I changed my Pie's Wan IP Address to 192.168.11.101 And I le…

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## [Unable to communicate with firestore](https://discourse.nodered.org/t/unable-to-communicate-with-firestore/46708)

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**Author:** [@alex1](https://discourse.nodered.org/u/alex1)\
**Replies:** 0\
**Last updated:** [4 June 2021 19:39 UTC](https://discourse.nodered.org/t/unable-to-communicate-with-firestore/46708 "2021-06-04T19:39:06Z")

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## [Merging 2 csv LEFT JOIN](https://discourse.nodered.org/t/merging-2-csv-left-join/46663)

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**Author:** [@madmax](https://discourse.nodered.org/u/madmax)\
**Replies:** 10\
**Last updated:** [4 June 2021 16:37 UTC](https://discourse.nodered.org/t/merging-2-csv-left-join/46663 "2021-06-04T16:37:33Z")

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Hello! I would like to merge two CSVs. With SQL, do this via a LEFT JOIN, is that also possible in node red?

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## [Signal when there is a change in status](https://discourse.nodered.org/t/signal-when-there-is-a-change-in-status/46705)

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**Author:** [@automati](https://discourse.nodered.org/u/automati)\
**Replies:** 1\
**Last updated:** [4 June 2021 14:45 UTC](https://discourse.nodered.org/t/signal-when-there-is-a-change-in-status/46705 "2021-06-04T14:45:22Z")

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Hello everybody I have a question: I have the following problem .. I have connected a Shelly to Nodered via MQTT, now I have the problem that I get the status from the Shelly about every 3 seconds ... Now I just want …

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## [Saving a single value to context](https://discourse.nodered.org/t/saving-a-single-value-to-context/46670)

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**Author:** [@Paul-Reed](https://discourse.nodered.org/u/Paul-Reed)\
**Replies:** 13\
**Last updated:** [4 June 2021 14:19 UTC](https://discourse.nodered.org/t/saving-a-single-value-to-context/46670 "2021-06-04T14:19:25Z")

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I'm saving a JSON object to file context similar to; { "192-168-1-10": \[ { "last\_on": 1622751269764 }, { "last\_off": 1622751272068 } \], "192-16-1-13": \[ { "last\_on": 162275177…

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## [How to use feezal](https://discourse.nodered.org/t/how-to-use-feezal/46688)

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**Author:** [@Suyens](https://discourse.nodered.org/u/Suyens)\
**Replies:** 1\
**Last updated:** [4 June 2021 12:07 UTC](https://discourse.nodered.org/t/how-to-use-feezal/46688 "2021-06-04T12:07:13Z")

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Hi, how to use feezal？

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## [Node red newby - change node - to string with payload parameter](https://discourse.nodered.org/t/node-red-newby-change-node-to-string-with-payload-parameter/46697)

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**Author:** [@spitzlbergerj](https://discourse.nodered.org/u/spitzlbergerj)\
**Replies:** 1\
**Last updated:** [4 June 2021 09:48 UTC](https://discourse.nodered.org/t/node-red-newby-change-node-to-string-with-payload-parameter/46697 "2021-06-04T09:48:37Z")

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Hi, I am new to node red (Raspberry Pi, Node Red v1.3.5), have already read many docs. However, I can't find an answer to my current problem, which I'm sure is very trivial.. I want to query the status of a device (3d …

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## [Writing tags to Allen Bradley Micrologix 1400](https://discourse.nodered.org/t/writing-tags-to-allen-bradley-micrologix-1400/43777)

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**Author:** [@dparib](https://discourse.nodered.org/u/dparib)\
**Replies:** 3\
**Last updated:** [4 June 2021 09:42 UTC](https://discourse.nodered.org/t/writing-tags-to-allen-bradley-micrologix-1400/43777 "2021-06-04T09:42:06Z")

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Hello Guys, I'm a beginner in the subject and I'm trying to write a simple variable in rockwell 1400. Unsuccessful for now, I'm a ladder programmer and I'm starting on node red now. could someone give me some reference…

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## [Slow down incoming values when the changes are not major](https://discourse.nodered.org/t/slow-down-incoming-values-when-the-changes-are-not-major/46689)

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**Author:** [@sfedo](https://discourse.nodered.org/u/sfedo)\
**Replies:** 3\
**Last updated:** [4 June 2021 07:30 UTC](https://discourse.nodered.org/t/slow-down-incoming-values-when-the-changes-are-not-major/46689 "2021-06-04T07:30:08Z")

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Hello, I get values for current from my Siemens PLC into nodered every second. I would like to slow down the input when the chnages are not that high. The actual value is jumping between 15.1 and 15.8 A. I dont need to …

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## [Please help at rbe](https://discourse.nodered.org/t/please-help-at-rbe/46672)

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**Author:** [@edstobi](https://discourse.nodered.org/u/edstobi)\
**Replies:** 1\
**Last updated:** [4 June 2021 01:11 UTC](https://discourse.nodered.org/t/please-help-at-rbe/46672 "2021-06-04T01:11:12Z")

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HI I have a mqtt input object topic: "hasp/plate01/state/json" payload: object event\_type: "button\_short\_press" event: "p\[1\].b\[8\]" value: "ON" qos: 0 retain: false \_msgid: "4f0d399e.cea398" the value can change from O…

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## [How can I resolve Unexpected token error using 2jcie ble node?](https://discourse.nodered.org/t/how-can-i-resolve-unexpected-token-error-using-2jcie-ble-node/46388)

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**Author:** [@hashimoto](https://discourse.nodered.org/u/hashimoto)\
**Replies:** 11\
**Last updated:** [4 June 2021 00:14 UTC](https://discourse.nodered.org/t/how-can-i-resolve-unexpected-token-error-using-2jcie-ble-node/46388 "2021-06-04T00:14:44Z")

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Hi, I want to use node, "@uhuru/node-red-contrib-omron-2jcie-bu-ble." However, when I deploy simple flow consists of three nodes, inject- ble - debug, error, such as "SyntaxError:Unexpected token u in JSON at pos…

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## [MQTT Nodes Connection Behaviour](https://discourse.nodered.org/t/mqtt-nodes-connection-behaviour/45954)

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**Author:** [@Siothrun](https://discourse.nodered.org/u/Siothrun)\
**Replies:** 24\
**Last updated:** [3 June 2021 23:24 UTC](https://discourse.nodered.org/t/mqtt-nodes-connection-behaviour/45954 "2021-06-03T23:24:26Z")

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Dear Forum I wanted to post my observations of the MQTT nodes connection behaviour. There is an approximately 20 minute delay from when internet access is lost (SIM card removed) to when the MQTT nodes show disconnect…

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## [Http output from msg.payload](https://discourse.nodered.org/t/http-output-from-msg-payload/46617)

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**Author:** [@Becker](https://discourse.nodered.org/u/Becker)\
**Replies:** 9\
**Last updated:** [3 June 2021 17:57 UTC](https://discourse.nodered.org/t/http-output-from-msg-payload/46617 "2021-06-03T17:57:04Z")

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Hallo, is it easy possible to get msg.payload from my flows as a http output like this (from my wallbox): without installing a webserver or similar :grimacing: greetings

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## [Mysql - multiple queries in one line](https://discourse.nodered.org/t/mysql-multiple-queries-in-one-line/46655)

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**Author:** [@chuckyro](https://discourse.nodered.org/u/chuckyro)\
**Replies:** 4\
**Last updated:** [3 June 2021 15:24 UTC](https://discourse.nodered.org/t/mysql-multiple-queries-in-one-line/46655 "2021-06-03T15:24:35Z")

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hi, simple question... is it possible to send to MySQL ... 2,3.. queries in one single line (topic) ? eg: msg.topic = "select 1 ; select 2; select 3;" // .. of course here I'll have something more complex... if I…

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## [Debugging and Notification issues](https://discourse.nodered.org/t/debugging-and-notification-issues/46652)

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**Author:** [@alamapstieks](https://discourse.nodered.org/u/alamapstieks)\
**Replies:** 6\
**Last updated:** [3 June 2021 14:08 UTC](https://discourse.nodered.org/t/debugging-and-notification-issues/46652 "2021-06-03T14:08:12Z")

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Hi chaps, I have Node Red running in HA, it installed version 1.3.5 in the add-on 9.1.3. I've been using NR for a few years and love it. Since this update my debugging stopped working as well as the notifications under …

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## [Start a executable from Docker cotainer](https://discourse.nodered.org/t/start-a-executable-from-docker-cotainer/46650)

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**Author:** [@RaducuP](https://discourse.nodered.org/u/RaducuP)\
**Replies:** 1\
**Last updated:** [3 June 2021 13:27 UTC](https://discourse.nodered.org/t/start-a-executable-from-docker-cotainer/46650 "2021-06-03T13:27:36Z")

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Hello, i use node-red on a Docker, and i want to connect to my pc to run a command on it . How can i do that? Thank you.

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## [Array dropping bits in change node](https://discourse.nodered.org/t/array-dropping-bits-in-change-node/46642)

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**Author:** [@JoshuaG](https://discourse.nodered.org/u/JoshuaG)\
**Replies:** 3\
**Last updated:** [3 June 2021 12:36 UTC](https://discourse.nodered.org/t/array-dropping-bits-in-change-node/46642 "2021-06-03T12:36:13Z")

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I'm having an issue where I am piping 16 bits of an arrange into a change node to give them English names but for some reason the output is only keeping the first 8 bits, or 8 statements and abandoning everything else. …

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## [Node-Red projects](https://discourse.nodered.org/t/node-red-projects/46458)

<div class="topic-metadata">

**Author:** [@magicman](https://discourse.nodered.org/u/magicman)\
**Replies:** 8\
**Last updated:** [3 June 2021 12:31 UTC](https://discourse.nodered.org/t/node-red-projects/46458 "2021-06-03T12:31:21Z")

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Hi i am very new to Node-Red , and loving it by the way! I have created my first project using my existing flows , if i decide to delete this project will my existing flows be deleted to?

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## [Node RED - Solution Deployment at Scale](https://discourse.nodered.org/t/node-red-solution-deployment-at-scale/46584)

<div class="topic-metadata">

**Author:** [@sathishkumarc14](https://discourse.nodered.org/u/sathishkumarc14)\
**Replies:** 3\
**Last updated:** [3 June 2021 11:37 UTC](https://discourse.nodered.org/t/node-red-solution-deployment-at-scale/46584 "2021-06-03T11:37:18Z")

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Hi, We developed a IIoT solution with node red. We have to deploy the application at scale say 50 PC (Windows). Is there any simplest way to install Node RED and solution at all systems?

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## [How to call the interface of the export function in nodered](https://discourse.nodered.org/t/how-to-call-the-interface-of-the-export-function-in-nodered/46341)

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**Author:** [@lei1](https://discourse.nodered.org/u/lei1)\
**Replies:** 8\
**Last updated:** [3 June 2021 02:29 UTC](https://discourse.nodered.org/t/how-to-call-the-interface-of-the-export-function-in-nodered/46341 "2021-06-03T02:29:09Z")

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Hello everyone. I want to use the "export" function in the upper right corner of nodered, where is this function and how to call it?

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## [Data to Graphite in Grafana](https://discourse.nodered.org/t/data-to-graphite-in-grafana/46585)

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**Author:** [@jackie7](https://discourse.nodered.org/u/jackie7)\
**Replies:** 6\
**Last updated:** [3 June 2021 08:19 UTC](https://discourse.nodered.org/t/data-to-graphite-in-grafana/46585 "2021-06-03T08:19:48Z")

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Hey there, I would like to send data to Graphite, which I'm using inside Grafana. How is that possible? Thanks!

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## [How to use Profinet between two Raspberry Pi](https://discourse.nodered.org/t/how-to-use-profinet-between-two-raspberry-pi/46591)

<div class="topic-metadata">

**Author:** [@quemf](https://discourse.nodered.org/u/quemf)\
**Replies:** 7\
**Last updated:** [3 June 2021 08:05 UTC](https://discourse.nodered.org/t/how-to-use-profinet-between-two-raspberry-pi/46591 "2021-06-03T08:05:41Z")

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Hello everyone, Does anyone know how to set communication between two Raspberry Pi using Profinet? I went to install profinet nodes, but I did not see anything Could anyone help me please? Thank you very much, Q.

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