# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=916

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

**Page:** 917

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## [(Off topic but please) RPI VLAN How?](https://discourse.nodered.org/t/off-topic-but-please-rpi-vlan-how/7546)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 3\
**Last updated:** [5 February 2019 03:27 UTC](https://discourse.nodered.org/t/off-topic-but-please-rpi-vlan-how/7546 "2019-02-05T03:27:36Z")

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I am sorry for this. But I really am at wit's end Recently I was going through the sudo apt update and sudo apt upgrade on a working RPI. It had WAP and a lot of other stuff working. After the updates, the WAP stopp…

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## [NLC node fails to connect NLC instance on IBM Cloud](https://discourse.nodered.org/t/nlc-node-fails-to-connect-nlc-instance-on-ibm-cloud/7064)

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**Author:** [@oosawak1975](https://discourse.nodered.org/u/oosawak1975)\
**Replies:** 3\
**Last updated:** [5 February 2019 00:41 UTC](https://discourse.nodered.org/t/nlc-node-fails-to-connect-nlc-instance-on-ibm-cloud/7064 "2019-02-05T00:41:09Z")

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Starting from around Jan 11th, 2019, NLC node fails to connect NLC instance on IBM Cloud. It was working until Dec 2018. This issue happens on multiple NLC instances on IBM Cloud. Here is the step to reproduce. Deploy…

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## [I've lost control of Node Red, how can I control it back?](https://discourse.nodered.org/t/ive-lost-control-of-node-red-how-can-i-control-it-back/7586)

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**Author:** [@Barabba11](https://discourse.nodered.org/u/Barabba11)\
**Replies:** 5\
**Last updated:** [4 February 2019 19:06 UTC](https://discourse.nodered.org/t/ive-lost-control-of-node-red-how-can-i-control-it-back/7586 "2019-02-04T19:06:59Z")

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Hi, I've latest firefox, Java, RAM is ok, internet and connection ok, all is fine. I think I've mad a mistake in my flow, maybe recursive messages are looping, I was very careful but it can happen I made mistake, when I…

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## [\[Solved\] Struggling with msg comparaison](https://discourse.nodered.org/t/solved-struggling-with-msg-comparaison/7576)

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**Author:** [@merlusse](https://discourse.nodered.org/u/merlusse)\
**Replies:** 3\
**Last updated:** [4 February 2019 16:02 UTC](https://discourse.nodered.org/t/solved-struggling-with-msg-comparaison/7576 "2019-02-04T16:02:23Z")

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Hello floks, I discoverd node red a week ago and it's seems perfect for my home control dream with my low programation knowledge... I'm trying to control a gpio from my raspberry to start and stop at a certain time I s…

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## [ERROR: Cannot open serial port /dev/ttyAMC0. Error code 2](https://discourse.nodered.org/t/error-cannot-open-serial-port-dev-ttyamc0-error-code-2/7570)

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**Author:** [@juntiedt](https://discourse.nodered.org/u/juntiedt)\
**Replies:** 4\
**Last updated:** [4 February 2019 15:19 UTC](https://discourse.nodered.org/t/error-cannot-open-serial-port-dev-ttyamc0-error-code-2/7570 "2019-02-04T15:19:36Z")

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I have installed z-wave library and open Z-Wave. No problems. When I start node-red I get the following error message: 2019-02-04 12:23:39.398 Error, ERROR: Cannot open serial port /dev/ttyAMC0. Error code 2 I don't u…

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## [Capturing an HTTP Response](https://discourse.nodered.org/t/capturing-an-http-response/7581)

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**Author:** [@Lee](https://discourse.nodered.org/u/Lee)\
**Replies:** 5\
**Last updated:** [4 February 2019 14:59 UTC](https://discourse.nodered.org/t/capturing-an-http-response/7581 "2019-02-04T14:59:36Z")

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I have a flow set up that begins with HTTP in node that receives requests from a .NET client. The parameters on the GET request are processed through a function node and then passed into an HTTP request node with authent…

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## [Linking nodered with FRED cloud](https://discourse.nodered.org/t/linking-nodered-with-fred-cloud/7575)

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**Author:** [@alia](https://discourse.nodered.org/u/alia)\
**Replies:** 0\
**Last updated:** [4 February 2019 13:06 UTC](https://discourse.nodered.org/t/linking-nodered-with-fred-cloud/7575 "2019-02-04T13:06:45Z")

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Hey, I linked the local nodered to FRED and just want the local nodered to be "informed" whenever FRED server has a fault or malfunctions. Any ideas (or nodes that you can share with me) about this? Thanks in advance :…

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## [Node red in docker](https://discourse.nodered.org/t/node-red-in-docker/7513)

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**Author:** [@ttquattroman](https://discourse.nodered.org/u/ttquattroman)\
**Replies:** 9\
**Last updated:** [4 February 2019 13:06 UTC](https://discourse.nodered.org/t/node-red-in-docker/7513 "2019-02-04T13:06:15Z")

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I have loaded Node-Red onto my QNAP NAS using container and hence docker. When I open node red I do not see the option to “ Manage Pallett” . Anyone know how to resolve this. Thanks

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## [Codings form native UTF8 to windows1250 (iconv)](https://discourse.nodered.org/t/codings-form-native-utf8-to-windows1250-iconv/7515)

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**Author:** [@Vladimirbuta](https://discourse.nodered.org/u/Vladimirbuta)\
**Replies:** 7\
**Last updated:** [4 February 2019 12:13 UTC](https://discourse.nodered.org/t/codings-form-native-utf8-to-windows1250-iconv/7515 "2019-02-04T12:13:07Z")

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Hi, I need make same changes in a text file with windows 1250 encoding. To decoding to UTF-8 I use node-red-contrib-iconv https://flows.nodered.org/node/node-red-contrib-iconv and works fine, but iconv is only to decodi…

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## [Questions about "Sub-Flows" I may be missing something](https://discourse.nodered.org/t/questions-about-sub-flows-i-may-be-missing-something/7545)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 6\
**Last updated:** [4 February 2019 07:59 UTC](https://discourse.nodered.org/t/questions-about-sub-flows-i-may-be-missing-something/7545 "2019-02-04T07:59:30Z")

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I'm a bit stuck. I get that subflows are a kind of Macro of a group of nodes. They are limited to one input and I am not exactly sure about outputs. (But I'll look into that.) So, I have a group of nodes which is re…

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## [How to convert node red completed project into product or work without node red or just want to work with custom server](https://discourse.nodered.org/t/how-to-convert-node-red-completed-project-into-product-or-work-without-node-red-or-just-want-to-work-with-custom-server/7553)

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**Author:** [@Muruganandham18](https://discourse.nodered.org/u/Muruganandham18)\
**Replies:** 2\
**Last updated:** [4 February 2019 07:34 UTC](https://discourse.nodered.org/t/how-to-convert-node-red-completed-project-into-product-or-work-without-node-red-or-just-want-to-work-with-custom-server/7553 "2019-02-04T07:34:17Z")

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How to convert node red completed project into product or work without node red or just want to work with the custom server.

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## [Node Editor theming with Angular 6](https://discourse.nodered.org/t/node-editor-theming-with-angular-6/7542)

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**Author:** [@hmzhdd](https://discourse.nodered.org/u/hmzhdd)\
**Replies:** 2\
**Last updated:** [4 February 2019 00:04 UTC](https://discourse.nodered.org/t/node-editor-theming-with-angular-6/7542 "2019-02-04T00:04:03Z")

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Hello, I would make modification to the Node Red Editor , is it possible to redesign the interface ? I would use Angular framework. Thanks

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## [Http request Node stopped working with cyrillic](https://discourse.nodered.org/t/http-request-node-stopped-working-with-cyrillic/7313)

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**Author:** [@Sergii](https://discourse.nodered.org/u/Sergii)\
**Replies:** 1\
**Last updated:** [3 February 2019 19:46 UTC](https://discourse.nodered.org/t/http-request-node-stopped-working-with-cyrillic/7313 "2019-02-03T19:46:08Z")

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This code has always worked: Summary\[{"id":"2305c42f.da47a4","type":"http request","z":"37a4cfd0.689588","name":"TEST DOOR","method&qu…

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## [Node-red Exec node python code with Mac](https://discourse.nodered.org/t/node-red-exec-node-python-code-with-mac/7520)

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**Author:** [@soushah](https://discourse.nodered.org/u/soushah)\
**Replies:** 5\
**Last updated:** [3 February 2019 14:54 UTC](https://discourse.nodered.org/t/node-red-exec-node-python-code-with-mac/7520 "2019-02-03T14:54:35Z")

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Hello everyone i am working on a project where i have data from a sensor reading by arduino and arduino process the data using python and want to communicate with node-red what i am trying to do is i am using a mac i wa…

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## [Tcp request node, host/port via flow works only once](https://discourse.nodered.org/t/tcp-request-node-host-port-via-flow-works-only-once/4104)

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**Author:** [@Mumin](https://discourse.nodered.org/u/Mumin)\
**Replies:** 20\
**Last updated:** [3 February 2019 01:20 UTC](https://discourse.nodered.org/t/tcp-request-node-host-port-via-flow-works-only-once/4104 "2019-02-03T01:20:43Z")

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Hi, I use the "tcp request node" because host/port will change and this node allows to pass in both via flow. I see the following effect and believe its a bug: node ist not connected I pass in an empty msg with host a…

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## [Setting Node Red SSL on Docker](https://discourse.nodered.org/t/setting-node-red-ssl-on-docker/5491)

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**Author:** [@luisgcu](https://discourse.nodered.org/u/luisgcu)\
**Replies:** 7\
**Last updated:** [2 February 2019 22:41 UTC](https://discourse.nodered.org/t/setting-node-red-ssl-on-docker/5491 "2019-02-02T22:41:10Z")

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Hi guys, I am trying to set https secure connection with node red , I have generated the certificates following this tutorial NODE\_RED SSL, on settings.js uncomented the follwing: var fs = require("fs"); https: { …

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## [Asking for help](https://discourse.nodered.org/t/asking-for-help/7509)

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**Author:** [@chappy](https://discourse.nodered.org/u/chappy)\
**Replies:** 4\
**Last updated:** [2 February 2019 15:30 UTC](https://discourse.nodered.org/t/asking-for-help/7509 "2019-02-02T15:30:31Z")

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Dear Node-Red users, I am new for node-red but I have a strong interest to learn about it. Here is my challenge as a beginner. I was installing serial port pallets to communicate with the Arduino board. Mistakenly I eit…

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## [Write Slide Value](https://discourse.nodered.org/t/write-slide-value/7450)

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**Author:** [@rogier](https://discourse.nodered.org/u/rogier)\
**Replies:** 4\
**Last updated:** [2 February 2019 12:32 UTC](https://discourse.nodered.org/t/write-slide-value/7450 "2019-02-02T12:32:54Z")

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can anyone help me with this one? i have a DDC controller, i can write value with this request: http://192.168.1.240/root?resource=WriteProperty&jsoncode={"index"%3A335938824%2C"property"%3A85%2C"value"%3A45}&callback=…

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## [Node-red-contrib-canbus install failed](https://discourse.nodered.org/t/node-red-contrib-canbus-install-failed/7160)

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**Author:** [@Bobet21](https://discourse.nodered.org/u/Bobet21)\
**Replies:** 3\
**Last updated:** [1 February 2019 18:39 UTC](https://discourse.nodered.org/t/node-red-contrib-canbus-install-failed/7160 "2019-02-01T18:39:49Z")

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Hello, I am trying to re install the node-red-contrib-canbus which was working fine previoulsy, they made some changes on the Git source and since then it seems I am not able to install that node. I belive the node red …

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## [How to query Watson IoT historical data](https://discourse.nodered.org/t/how-to-query-watson-iot-historical-data/7483)

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**Author:** [@KenioCarvalho](https://discourse.nodered.org/u/KenioCarvalho)\
**Replies:** 0\
**Last updated:** [1 February 2019 14:43 UTC](https://discourse.nodered.org/t/how-to-query-watson-iot-historical-data/7483 "2019-02-01T14:43:38Z")

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I setup Watson IoT to send data to cloudant DB. Cloudant create a new database for every week. How can i query all databases for device events using Cloudant Node?

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## [Picking platform for home server... (BBB or rPi3?)](https://discourse.nodered.org/t/picking-platform-for-home-server-bbb-or-rpi3/745)

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**Author:** [@VoltVisionFrenchy](https://discourse.nodered.org/u/VoltVisionFrenchy)\
**Replies:** 8\
**Last updated:** [1 February 2019 13:36 UTC](https://discourse.nodered.org/t/picking-platform-for-home-server-bbb-or-rpi3/745 "2019-02-01T13:36:20Z")

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Hello all. I would like to setup a home “edge server” running Node-Red for various things… I have both a BBB (Beaglebone Black) and an rPi3 sitting here. Which one do you recommend for best learning/support and various…

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## [Beginner Question - Openhab - Phillips Hue](https://discourse.nodered.org/t/beginner-question-openhab-phillips-hue/7476)

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**Author:** [@linsenpago](https://discourse.nodered.org/u/linsenpago)\
**Replies:** 1\
**Last updated:** [1 February 2019 12:28 UTC](https://discourse.nodered.org/t/beginner-question-openhab-phillips-hue/7476 "2019-02-01T12:28:29Z")

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Hello there! I am just beginning to explore the functionalities in Node-Red. I was able to setup the connection to my openhab installation and also to connect to my Phillips Hue Hub and i am able to select scenes and t…

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## [Updates - node-red-contrib-bigtimer - HELP](https://discourse.nodered.org/t/updates-node-red-contrib-bigtimer-help/7475)

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**Author:** [@scargill](https://discourse.nodered.org/u/scargill)\
**Replies:** 1\
**Last updated:** [1 February 2019 12:23 UTC](https://discourse.nodered.org/t/updates-node-red-contrib-bigtimer-help/7475 "2019-02-01T12:23:32Z")

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This morning I've updated node-red-contrib-bigtimer to get rid of a nasty bug in moonrise-moonset detection (the module suncalc (getMoonTimes.alwaysUp and alwaysDown don't seem to correctly support FALSE) - fixed and I'm…

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## [DHTT22 zero values](https://discourse.nodered.org/t/dhtt22-zero-values/7465)

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**Author:** [@lowcbk](https://discourse.nodered.org/u/lowcbk)\
**Replies:** 2\
**Last updated:** [1 February 2019 10:38 UTC](https://discourse.nodered.org/t/dhtt22-zero-values/7465 "2019-02-01T10:38:54Z")

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Have been using node-red-contrib-dht-sensor with DHT22 sensor showing zero values in temperature and humidity : (object \_msgid: "2bea0790.4d4168" topic: "rpi-dht22" payload: "0.00" humidity: "0.00" isValid: false …

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## [Trigger nodes not doing the same on different machines](https://discourse.nodered.org/t/trigger-nodes-not-doing-the-same-on-different-machines/7468)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 0\
**Last updated:** [1 February 2019 10:13 UTC](https://discourse.nodered.org/t/trigger-nodes-not-doing-the-same-on-different-machines/7468 "2019-02-01T10:13:52Z")

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Sorry, I thought I had resolved this the other day with the trigger node, but I haven't. Here are two examples of basically the same code on two machines. One it doesn't "work" and on the other it does. Idea: BigTime…

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## [Function node - what happens if I don't "return" anything?](https://discourse.nodered.org/t/function-node-what-happens-if-i-dont-return-anything/7457)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 4\
**Last updated:** [1 February 2019 09:26 UTC](https://discourse.nodered.org/t/function-node-what-happens-if-i-dont-return-anything/7457 "2019-02-01T09:26:06Z")

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I know I am asking for it by asking, but in light of wanting to learn..... It probably isn't the reason, but I want to be sure. My poor RPI is (I am told) running way to hard (60-70% load peaking.) Now and then it goe…

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## [How to use node-red API](https://discourse.nodered.org/t/how-to-use-node-red-api/7413)

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**Author:** [@krunal](https://discourse.nodered.org/u/krunal)\
**Replies:** 5\
**Last updated:** [1 February 2019 09:07 UTC](https://discourse.nodered.org/t/how-to-use-node-red-api/7413 "2019-02-01T09:07:57Z")

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Hello Team, I am trying to use vue Js as frontend and node-red as backend , May I know how to access node-red api or any other to establish connection between them. Thanks, Krunal Trivedi

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## [Dmxusbpro - node red flows stopped due to missing node types](https://discourse.nodered.org/t/dmxusbpro-node-red-flows-stopped-due-to-missing-node-types/7462)

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**Author:** [@Erbachm](https://discourse.nodered.org/u/Erbachm)\
**Replies:** 1\
**Last updated:** [1 February 2019 09:02 UTC](https://discourse.nodered.org/t/dmxusbpro-node-red-flows-stopped-due-to-missing-node-types/7462 "2019-02-01T09:02:33Z")

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I've tried installing dmxusbpro as a potential replace for the Ola bridge. Unfortunately I get the error "node red flows stopped due to missing node types" whenever I try to use it. Any suggestions appreciated.

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## [Pythonshell help? "exit code: -4058"](https://discourse.nodered.org/t/pythonshell-help-exit-code-4058/7419)

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**Author:** [@LuluMomo](https://discourse.nodered.org/u/LuluMomo)\
**Replies:** 17\
**Last updated:** [1 February 2019 03:47 UTC](https://discourse.nodered.org/t/pythonshell-help-exit-code-4058/7419 "2019-02-01T03:47:02Z")

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Hello, I'm new to NodeRed and Pythonshell in general so forgive me if this question sounds "noob-ish". I tried to display a message using Pythonshell from "test.py" whose content is just: print("Hello.") I'm expecting …

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## [Format timestamp in $now() function inside JSONata Expression Editor](https://discourse.nodered.org/t/format-timestamp-in-now-function-inside-jsonata-expression-editor/7440)

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**Author:** [@jhmluna](https://discourse.nodered.org/u/jhmluna)\
**Replies:** 4\
**Last updated:** [1 February 2019 01:34 UTC](https://discourse.nodered.org/t/format-timestamp-in-now-function-inside-jsonata-expression-editor/7440 "2019-02-01T01:34:13Z")

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Hello guys. I'm starting to learn the things involved in Node Red, including JavaScript and JSON. Today, using the JSONata Expression Editor in Change Node to define a message, I tried to put the optional parameters fo…

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