# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=404

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**Page:** 405

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## [Nodered and zigbee gateway E180-DTU(ZG120-ETH)](https://discourse.nodered.org/t/nodered-and-zigbee-gateway-e180-dtu-zg120-eth/59947)

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**Author:** [@mikear](https://discourse.nodered.org/u/mikear)\
**Replies:** 8\
**Last updated:** [16 March 2022 23:27 UTC](https://discourse.nodered.org/t/nodered-and-zigbee-gateway-e180-dtu-zg120-eth/59947 "2022-03-16T23:27:29Z")

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Is it possible to control zigbee devices through an E180-DTU(ZG120-ETH) gateway using the Zigbee2mqtt bridge? My NodeRED server is located at a place where there is limited space for a USB gateway and I actually have no…

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## [Top Banner Bar Scrolling Text (right to left or top to bottom)](https://discourse.nodered.org/t/top-banner-bar-scrolling-text-right-to-left-or-top-to-bottom/59956)

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**Author:** [@aa0z](https://discourse.nodered.org/u/aa0z)\
**Replies:** 0\
**Last updated:** [16 March 2022 22:12 UTC](https://discourse.nodered.org/t/top-banner-bar-scrolling-text-right-to-left-or-top-to-bottom/59956 "2022-03-16T22:12:41Z")

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I found this golden nugget of code which displays the date/time in the upper right hand corner. https://flows.nodered.org/flow/7e4bb517ce3a75add0083642ef03e9d8 It got me thinking. There is so much wasted space on the t…

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## [Triggering a flow only the second time a message is received](https://discourse.nodered.org/t/triggering-a-flow-only-the-second-time-a-message-is-received/59944)

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**Author:** [@Passi](https://discourse.nodered.org/u/Passi)\
**Replies:** 1\
**Last updated:** [16 March 2022 21:40 UTC](https://discourse.nodered.org/t/triggering-a-flow-only-the-second-time-a-message-is-received/59944 "2022-03-16T21:40:16Z")

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Hello first, I'm Pascal and I'm 19 years young. At the moment I only have experience with blockly in iobroker, but I have now switched to homeassist and since note red plays an important role there, I have been trying to…

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## [MQTT QoS 1 not working](https://discourse.nodered.org/t/mqtt-qos-1-not-working/59616)

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**Author:** [@WhiteLion](https://discourse.nodered.org/u/WhiteLion)\
**Replies:** 14\
**Last updated:** [16 March 2022 21:13 UTC](https://discourse.nodered.org/t/mqtt-qos-1-not-working/59616 "2022-03-16T21:13:15Z")

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Hi folks, since my home automation / IoT devices grows I get the problem that mqtt messages get dropped. So I switched all mqtt nodes from QoS 0 to QoS 1 and hoped to get an easy fix. -\> fail. I am unsure why this does…

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## [How to receive multicast messages in dockerized Node-Red](https://discourse.nodered.org/t/how-to-receive-multicast-messages-in-dockerized-node-red/59952)

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**Author:** [@rucksman007](https://discourse.nodered.org/u/rucksman007)\
**Replies:** 1\
**Last updated:** [16 March 2022 21:04 UTC](https://discourse.nodered.org/t/how-to-receive-multicast-messages-in-dockerized-node-red/59952 "2022-03-16T21:04:05Z")

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There is a device on my network that sends out multicast messages to a specific port (9522) and a specific IP address (239.12.255.254). I want to receive these messages in my dockerized Node-Red. But after configuring th…

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## [Node-red s7 mpi installation error](https://discourse.nodered.org/t/node-red-s7-mpi-installation-error/59951)

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**Author:** [@Rantur](https://discourse.nodered.org/u/Rantur)\
**Replies:** 0\
**Last updated:** [16 March 2022 20:51 UTC](https://discourse.nodered.org/t/node-red-s7-mpi-installation-error/59951 "2022-03-16T20:51:12Z")

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Hello Experts, I am trying to install node-red MPI S7. Below are the errors. Kindly help to solve it. npm ERR! code 1 npm ERR! path C:\\Users\\Admin\\node\_modules@gfcittolin\\usb npm ERR! command failed npm ERR! command…

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## [How to send output of one python script to another in Node-RED?](https://discourse.nodered.org/t/how-to-send-output-of-one-python-script-to-another-in-node-red/59936)

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**Author:** [@hkayan](https://discourse.nodered.org/u/hkayan)\
**Replies:** 3\
**Last updated:** [16 March 2022 19:49 UTC](https://discourse.nodered.org/t/how-to-send-output-of-one-python-script-to-another-in-node-red/59936 "2022-03-16T19:49:45Z")

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Sorry if this is too trivial. I have the following proof-of-concept scenario: Both scripts run continuously. Script 1: while True: print("Hello ") Script 2: while True: print("World") The script 2 will on…

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## [Flows not deploying](https://discourse.nodered.org/t/flows-not-deploying/59945)

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**Author:** [@deedos](https://discourse.nodered.org/u/deedos)\
**Replies:** 0\
**Last updated:** [16 March 2022 19:24 UTC](https://discourse.nodered.org/t/flows-not-deploying/59945 "2022-03-16T19:24:45Z")

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When deploying changes to a gitted project, the button gets greyed out and not deploys at all (waiting forever...) That started to happen after a very small change so I do not believed is related to code change inside pr…

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## [My big trouble with Wireguard (Pls help me bevor I need a therapists!)](https://discourse.nodered.org/t/my-big-trouble-with-wireguard-pls-help-me-bevor-i-need-a-therapists/59107)

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**Author:** [@WhiteLion](https://discourse.nodered.org/u/WhiteLion)\
**Replies:** 7\
**Last updated:** [16 March 2022 17:32 UTC](https://discourse.nodered.org/t/my-big-trouble-with-wireguard-pls-help-me-bevor-i-need-a-therapists/59107 "2022-03-16T17:32:19Z")

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hello friends, I ve Wireguard running on my Raspi 4 4GB and only get a connection after a period of time and / or many tries. This makes me crazy and I cannot find a solution or reason for this. I am willed to pay money…

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## [Continuous/reactive deployment on node creation](https://discourse.nodered.org/t/continuous-reactive-deployment-on-node-creation/59885)

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**Author:** [@pablo](https://discourse.nodered.org/u/pablo)\
**Replies:** 5\
**Last updated:** [16 March 2022 14:09 UTC](https://discourse.nodered.org/t/continuous-reactive-deployment-on-node-creation/59885 "2022-03-16T14:09:36Z")

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I understand that when you create a new node, then you press "deploy" to generate the workflow and run it. But, is it possible to make a reactive workflow where the options (template) of one custom node depends on the pr…

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## [Control lights via HTTP API on a Dali IOT Gateway](https://discourse.nodered.org/t/control-lights-via-http-api-on-a-dali-iot-gateway/59924)

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**Author:** [@BWTH](https://discourse.nodered.org/u/BWTH)\
**Replies:** 2\
**Last updated:** [16 March 2022 11:53 UTC](https://discourse.nodered.org/t/control-lights-via-http-api-on-a-dali-iot-gateway/59924 "2022-03-16T11:53:28Z")

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Hi i am new on node red, absloute beginner, node red is set up on raspberry, i have an iot gateway to control lights, so i wan´t to control it over node red over the api commands i can controll it, who could this work…

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## [Win 7 - Not Suported by NodeJS](https://discourse.nodered.org/t/win-7-not-suported-by-nodejs/59922)

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**Author:** [@Paul49](https://discourse.nodered.org/u/Paul49)\
**Replies:** 5\
**Last updated:** [16 March 2022 11:52 UTC](https://discourse.nodered.org/t/win-7-not-suported-by-nodejs/59922 "2022-03-16T11:52:35Z")

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Trying to Install on Win 7 https://nodered.org/docs/getting-started/windows This link indicates it should be possible get up and running on win 7. :slight\_smile: First step. Installing NodeJS from the link provided. D…

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## [iEM3255 no connect to 2 slave power meter](https://discourse.nodered.org/t/iem3255-no-connect-to-2-slave-power-meter/59906)

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**Author:** [@Ibnu](https://discourse.nodered.org/u/Ibnu)\
**Replies:** 14\
**Last updated:** [16 March 2022 11:04 UTC](https://discourse.nodered.org/t/iem3255-no-connect-to-2-slave-power-meter/59906 "2022-03-16T11:04:51Z")

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Hello everyone i have a problem integrated 2 unit power meter Schneider iEM3255 with node-red. node-red can only read 1 device power meter. i have a trial with wiring parrarel not sloved. Has anyone here experienced …

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## [Rate Limit per topic, releasing first message](https://discourse.nodered.org/t/rate-limit-per-topic-releasing-first-message/9669)

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**Author:** [@marcusone](https://discourse.nodered.org/u/marcusone)\
**Replies:** 5\
**Last updated:** [16 March 2022 09:19 UTC](https://discourse.nodered.org/t/rate-limit-per-topic-releasing-first-message/9669 "2022-03-16T09:19:41Z")

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I have a need to rate limit a notification message, by topic. So I setup the delay node to do that. However, I want only 1 message per day per topic. Unfortunately, the Delay node will "delay" 1 day before sending the…

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## [How to obtain binary output with hex string](https://discourse.nodered.org/t/how-to-obtain-binary-output-with-hex-string/15051)

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**Author:** [@mike829](https://discourse.nodered.org/u/mike829)\
**Replies:** 22\
**Last updated:** [16 March 2022 08:58 UTC](https://discourse.nodered.org/t/how-to-obtain-binary-output-with-hex-string/15051 "2022-03-16T08:58:25Z")

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Hello Everybody, I just extracted a value from a string, and thanks to this forum for this. Now I would like to convert the value in substring n.5 (the value is in hex, so n.4 bit) in binary and obtain n.4 outputs like…

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## [RSS Feed - only get the latest entry](https://discourse.nodered.org/t/rss-feed-only-get-the-latest-entry/59805)

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**Author:** [@pitheway](https://discourse.nodered.org/u/pitheway)\
**Replies:** 17\
**Last updated:** [16 March 2022 07:44 UTC](https://discourse.nodered.org/t/rss-feed-only-get-the-latest-entry/59805 "2022-03-16T07:44:09Z")

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Noob question. I am using NodeRed to read youtube rss and post the results to chat bot. I have noticed that when the node red server goes offline or gets rebooted the entire feed going back many entries gets reposted. q…

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## [Node-RED docker with persistent themes](https://discourse.nodered.org/t/node-red-docker-with-persistent-themes/59911)

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**Author:** [@szafran81](https://discourse.nodered.org/u/szafran81)\
**Replies:** 1\
**Last updated:** [16 March 2022 07:27 UTC](https://discourse.nodered.org/t/node-red-docker-with-persistent-themes/59911 "2022-03-16T07:27:25Z")

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Hi, I've just moved from Home Assistant OS to a dockerized installation. Just finishing the configs now. I'm wondering is there a way to make installed themes persistent? Now after executing "docker-compose up" and us…

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## [Problema con un flow](https://discourse.nodered.org/t/problema-con-un-flow/59067)

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**Author:** [@ivanpesenti](https://discourse.nodered.org/u/ivanpesenti)\
**Replies:** 25\
**Last updated:** [16 March 2022 07:17 UTC](https://discourse.nodered.org/t/problema-con-un-flow/59067 "2022-03-16T07:17:53Z")

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buongiorno sono un principante premetto , avrei bisogno di un aiuto . Tentando di scrivere un valore negativo su una variabile s7 write mi genera questo errore :"RangeError: The value of "value" is out of range. It must …

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## [How to stop embedded Node-RED?](https://discourse.nodered.org/t/how-to-stop-embedded-node-red/59904)

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**Author:** [@SebCanet](https://discourse.nodered.org/u/SebCanet)\
**Replies:** 0\
**Last updated:** [15 March 2022 23:44 UTC](https://discourse.nodered.org/t/how-to-stop-embedded-node-red/59904 "2022-03-15T23:44:26Z")

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Hello everyone, I am developing software to help program microcontroller boards and I want to integrate Node-RED into my Electron application to retrieve data sent by my boards. I used the example code (https://nodered…

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## [Jdbc driver files](https://discourse.nodered.org/t/jdbc-driver-files/59897)

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**Author:** [@toddwarrington](https://discourse.nodered.org/u/toddwarrington)\
**Replies:** 5\
**Last updated:** [15 March 2022 22:23 UTC](https://discourse.nodered.org/t/jdbc-driver-files/59897 "2022-03-15T22:23:57Z")

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I am trying to figure out where to put my jdbc driver .jar files, so Node-RED can find them when using node-red-contrib-jdbc node.

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## [Text editor contents in node red](https://discourse.nodered.org/t/text-editor-contents-in-node-red/59858)

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**Author:** [@maliheh.amirfakhry](https://discourse.nodered.org/u/maliheh.amirfakhry)\
**Replies:** 4\
**Last updated:** [15 March 2022 19:01 UTC](https://discourse.nodered.org/t/text-editor-contents-in-node-red/59858 "2022-03-15T19:01:47Z")

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Hi guys, Can you please let me know how I can read the text editor contents in Node-Red? (My project is about reading a barcode scanner and sending the data to a server. )

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## [Node-red in docker container - apt command not found](https://discourse.nodered.org/t/node-red-in-docker-container-apt-command-not-found/59895)

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**Author:** [@lab](https://discourse.nodered.org/u/lab)\
**Replies:** 1\
**Last updated:** [15 March 2022 17:30 UTC](https://discourse.nodered.org/t/node-red-in-docker-container-apt-command-not-found/59895 "2022-03-15T17:30:30Z")

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I have node-red installed on my docker server running on ubuntu 21.10: docker run -it -p 1880:1880 -v node\_red\_data:/data --name mynodered nodered/node-red And wanted to install the imagemagick software in the same con…

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## [Utf8 decoding from serial buffer](https://discourse.nodered.org/t/utf8-decoding-from-serial-buffer/59884)

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**Author:** [@leifnel](https://discourse.nodered.org/u/leifnel)\
**Replies:** 4\
**Last updated:** [15 March 2022 16:24 UTC](https://discourse.nodered.org/t/utf8-decoding-from-serial-buffer/59884 "2022-03-15T16:24:09Z")

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I'm getting data from a serial port., including danish characters æøå = c6 f8 c5 I need to convert this to c3 a6 c3 b8 c3 a5 If i send the data through the iconv node, set the encoding to utf8, I just get \<?\> character…

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## [Help cumulative values](https://discourse.nodered.org/t/help-cumulative-values/59882)

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**Author:** [@CelioRodrigues](https://discourse.nodered.org/u/CelioRodrigues)\
**Replies:** 5\
**Last updated:** [15 March 2022 14:22 UTC](https://discourse.nodered.org/t/help-cumulative-values/59882 "2022-03-15T14:22:18Z")

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I'm kind of new to node-red and JS. I've been trying to create a cumulative function to help with industrial monitoring. We have some variables that we bring with PLC node, we want know how many % per day the machine pa…

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## [Using projects as a back up?](https://discourse.nodered.org/t/using-projects-as-a-back-up/59844)

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**Author:** [@magicman](https://discourse.nodered.org/u/magicman)\
**Replies:** 8\
**Last updated:** [15 March 2022 14:19 UTC](https://discourse.nodered.org/t/using-projects-as-a-back-up/59844 "2022-03-15T14:19:43Z")

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May i ask if i transfer my flows to a project then commit the project from my linux server can i then pull back the flows onto my windows PC and run node-red with these flows or is it more complicated that that? and if i…

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## [Using Subflows within Node-RED unit tests (node-red-node-test-helper) does NOT work](https://discourse.nodered.org/t/using-subflows-within-node-red-unit-tests-node-red-node-test-helper-does-not-work/59081)

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**Author:** [@BeginnerNode](https://discourse.nodered.org/u/BeginnerNode)\
**Replies:** 6\
**Last updated:** [15 March 2022 14:19 UTC](https://discourse.nodered.org/t/using-subflows-within-node-red-unit-tests-node-red-node-test-helper-does-not-work/59081 "2022-03-15T14:19:42Z")

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Hello together, I have created several unit tests using node-red-node-test-helper to have end-to-end tests of my flow containg 4 nodes: A input B function C function D output Test worked without any problems for th…

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## [Projects - diff - is there a way to limit to filter to only what changed?](https://discourse.nodered.org/t/projects-diff-is-there-a-way-to-limit-to-filter-to-only-what-changed/59859)

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**Author:** [@SandeepA](https://discourse.nodered.org/u/SandeepA)\
**Replies:** 6\
**Last updated:** [15 March 2022 14:17 UTC](https://discourse.nodered.org/t/projects-diff-is-there-a-way-to-limit-to-filter-to-only-what-changed/59859 "2022-03-15T14:17:32Z")

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Hi , I started using the Projects feature of NR recently. And i am amazed at it. Thank You for this splendid feature. In past i had asked for versioning and diff to be added to v3 - but now i can see Projects already …

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## [Struggling receiving MQTT messages in Node Red](https://discourse.nodered.org/t/struggling-receiving-mqtt-messages-in-node-red/59878)

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**Author:** [@pabutterworth](https://discourse.nodered.org/u/pabutterworth)\
**Replies:** 4\
**Last updated:** [15 March 2022 14:01 UTC](https://discourse.nodered.org/t/struggling-receiving-mqtt-messages-in-node-red/59878 "2022-03-15T14:01:02Z")

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Hi, I'm developing a garage door controller in Node-red running on a piZero under Dietpi that I want to connect to my Home Assistant instance using MQTT. I have the Mosquitto broker installed on the Home Assistance inst…

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## [Run Node-red on Windows10](https://discourse.nodered.org/t/run-node-red-on-windows10/59816)

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**Author:** [@fredshortlv129bis](https://discourse.nodered.org/u/fredshortlv129bis)\
**Replies:** 8\
**Last updated:** [15 March 2022 11:47 UTC](https://discourse.nodered.org/t/run-node-red-on-windows10/59816 "2022-03-15T11:47:53Z")

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After a while of inactivity, I try to connect to Node-Red again, but I cannot access Node-Red and my previous flows. I accidentally deleted my desktop shortcuts. http://127.0.0.1:1880 does not help. I cannot find my p…

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## [Message Payload Limitations](https://discourse.nodered.org/t/message-payload-limitations/59711)

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**Author:** [@StevenMurray2022](https://discourse.nodered.org/u/StevenMurray2022)\
**Replies:** 23\
**Last updated:** [15 March 2022 11:43 UTC](https://discourse.nodered.org/t/message-payload-limitations/59711 "2022-03-15T11:43:09Z")

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I'm trying to pass a message from a mobile using 'SMS Receiver'--\>--'String'--\>--'Serial Output' nodes, but Node red seems to truncate the message after 153 Characters.. The below message is what I'm trying to pass, but…

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