# Latest

**URL:** https://discourse.nodered.org/latest.md?page=1222

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

**Page:** 1223

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## [Weekly Time scheduler](https://discourse.nodered.org/t/weekly-time-scheduler/16110)

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**Author:** [@klakier2121](https://discourse.nodered.org/u/klakier2121)\
**Replies:** 3\
**Last updated:** [1 October 2019 06:52 UTC](https://discourse.nodered.org/t/weekly-time-scheduler/16110 "2019-10-01T06:52:32Z")

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Hello! I am new in Node-RED and I wanna ask something. Is it possible to design something like on the screen? I found a lot of timers and schedules, but all of them are bad for my purposes . I want to user decide wh…

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## [Split input on character is not working with a serial port](https://discourse.nodered.org/t/split-input-on-character-is-not-working-with-a-serial-port/16018)

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**Author:** [@aargollo](https://discourse.nodered.org/u/aargollo)\
**Replies:** 13\
**Last updated:** [1 October 2019 01:27 UTC](https://discourse.nodered.org/t/split-input-on-character-is-not-working-with-a-serial-port/16018 "2019-10-01T01:27:56Z")

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Hi Guys, I´m working on parsing bytes from the Zigbee radio (NXP JN5168) connected directly on the Rpi3 serial port and I have some problem with split input using the SERIAL NODE configured as /dev/ttyAMA0, at some mome…

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## [Uwamp SQL ER\_PARSE\_ERROR when trying to send data from OPCUA to my local sql database](https://discourse.nodered.org/t/uwamp-sql-er-parse-error-when-trying-to-send-data-from-opcua-to-my-local-sql-database/16116)

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**Author:** [@echowhiskey94](https://discourse.nodered.org/u/echowhiskey94)\
**Replies:** 0\
**Last updated:** [30 September 2019 23:49 UTC](https://discourse.nodered.org/t/uwamp-sql-er-parse-error-when-trying-to-send-data-from-opcua-to-my-local-sql-database/16116 "2019-09-30T23:49:19Z")

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Hey Everyone! I've been trying to send a value from an OPCUA Server to my local database in Uwamp. In my 'Insert Query' node, I want to send the value to the database when the payload is not equal to 0. I tried using …

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## [Testing Http In node with node-red-test-helper](https://discourse.nodered.org/t/testing-http-in-node-with-node-red-test-helper/16114)

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**Author:** [@chandlpa](https://discourse.nodered.org/u/chandlpa)\
**Replies:** 0\
**Last updated:** [30 September 2019 22:22 UTC](https://discourse.nodered.org/t/testing-http-in-node-with-node-red-test-helper/16114 "2019-09-30T22:22:20Z")

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Hi. Do you have any advice or reference code on testing http in with the node-test-helper? I was trying something like this … const flow = \[ { id: "n1", type: "http in", …

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## [Vacation-timer questions](https://discourse.nodered.org/t/vacation-timer-questions/16068)

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**Author:** [@hepcat72](https://discourse.nodered.org/u/hepcat72)\
**Replies:** 3\
**Last updated:** [30 September 2019 18:44 UTC](https://discourse.nodered.org/t/vacation-timer-questions/16068 "2019-09-30T18:44:25Z")

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I just finished tweaking my vacation-timer setup. When I last used it, I remember seeing a little status message appear below each vacation-timer node. However, now that I've set up a mechanism to automatically activat…

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## [Connect multiple different DB tables with dashDB](https://discourse.nodered.org/t/connect-multiple-different-db-tables-with-dashdb/16094)

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**Author:** [@Meng](https://discourse.nodered.org/u/Meng)\
**Replies:** 3\
**Last updated:** [30 September 2019 15:34 UTC](https://discourse.nodered.org/t/connect-multiple-different-db-tables-with-dashdb/16094 "2019-09-30T15:34:38Z")

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Hi I want to change the table name of dash db, I am using a ? and parameters markers for the table name and the following error occurs An unexpected token "?" was found following "INSERT INTO ". Expected tokens may inc…

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## [Function node with zero outputs](https://discourse.nodered.org/t/function-node-with-zero-outputs/16077)

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**Author:** [@johanon](https://discourse.nodered.org/u/johanon)\
**Replies:** 3\
**Last updated:** [30 September 2019 15:02 UTC](https://discourse.nodered.org/t/function-node-with-zero-outputs/16077 "2019-09-30T15:02:08Z")

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Minor thought. Sometimes I use the function node without outputs. It is all fine to write a 0 as valid number of outputs in the properties dialog. But using arrow selector seems to be limited to 1 on the low side. Perhap…

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## [Docker on synology - node-red user](https://discourse.nodered.org/t/docker-on-synology-node-red-user/16097)

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**Author:** [@hhinma](https://discourse.nodered.org/u/hhinma)\
**Replies:** 0\
**Last updated:** [30 September 2019 14:40 UTC](https://discourse.nodered.org/t/docker-on-synology-node-red-user/16097 "2019-09-30T14:40:21Z")

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I'm sure this is a simple question stemming from my lack of Unix literacy. Installed NR in docker on Synology NAS. I needed flow/module data to persist outside docker, so used a volume mapping to the main filesystem. …

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## [Node-Red don't open anymore](https://discourse.nodered.org/t/node-red-dont-open-anymore/16088)

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**Author:** [@Andrefs](https://discourse.nodered.org/u/Andrefs)\
**Replies:** 5\
**Last updated:** [30 September 2019 14:14 UTC](https://discourse.nodered.org/t/node-red-dont-open-anymore/16088 "2019-09-30T14:14:07Z")

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Anyone knows what the problem? Thanks

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## [Node Red Projects and GitHub/Balena](https://discourse.nodered.org/t/node-red-projects-and-github-balena/16003)

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**Author:** [@GregorR1](https://discourse.nodered.org/u/GregorR1)\
**Replies:** 1\
**Last updated:** [30 September 2019 12:37 UTC](https://discourse.nodered.org/t/node-red-projects-and-github-balena/16003 "2019-09-30T12:37:32Z")

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I'm trying to connect up my Development Device to my Balena so I can git push to deploy my program. The issue I'm having is that I can't get the Balena integration to work. Ive created my SSH key and I've added it into…

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## [Sensing AC switches and buttons states](https://discourse.nodered.org/t/sensing-ac-switches-and-buttons-states/15960)

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**Author:** [@Vittorio](https://discourse.nodered.org/u/Vittorio)\
**Replies:** 24\
**Last updated:** [30 September 2019 12:37 UTC](https://discourse.nodered.org/t/sensing-ac-switches-and-buttons-states/15960 "2019-09-30T12:37:12Z")

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Hello everyone ! I'm in the process of building my home automation system: I have a relay shield and I'm going to control it via the GPIOs of the same Raspberry pi that runs Node Red (I'll eventually have to use some mu…

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## [How to make custom UI widgets](https://discourse.nodered.org/t/how-to-make-custom-ui-widgets/15340)

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**Author:** [@limengsong](https://discourse.nodered.org/u/limengsong)\
**Replies:** 8\
**Last updated:** [30 September 2019 12:35 UTC](https://discourse.nodered.org/t/how-to-make-custom-ui-widgets/15340 "2019-09-30T12:35:28Z")

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How to make custom UI widgets in node-red. Just like TypedInput, EditableList, etc. Is there a tutorial for reference?

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## [Set Value on Windhager Heating System](https://discourse.nodered.org/t/set-value-on-windhager-heating-system/15476)

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**Author:** [@ebnerjoh](https://discourse.nodered.org/u/ebnerjoh)\
**Replies:** 17\
**Last updated:** [30 September 2019 12:25 UTC](https://discourse.nodered.org/t/set-value-on-windhager-heating-system/15476 "2019-09-30T12:25:59Z")

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Hi, I got a new Heating System from the Austrian Company "Windhager". They use a controling System called "Infinity" which includes a WEbServer. It is possible to use http request to get values from the system. E.g.: …

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## [Json array help](https://discourse.nodered.org/t/json-array-help/15884)

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**Author:** [@DillonW](https://discourse.nodered.org/u/DillonW)\
**Replies:** 2\
**Last updated:** [30 September 2019 10:58 UTC](https://discourse.nodered.org/t/json-array-help/15884 "2019-09-30T10:58:20Z")

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Hi, I am trying to use a function to access an outside defined ML model based on IBM. The requested format is specified as -d '{"input\_data": \[{"fields": \["SENSOROUTPUTSTATUS", "TEMP", "HUMIDITY", "TIME"\],"values": \[$AR…

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## [Node-RED on IBM Bluemix for IBM Watson IoT Platform](https://discourse.nodered.org/t/node-red-on-ibm-bluemix-for-ibm-watson-iot-platform/16079)

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**Author:** [@imdkthr](https://discourse.nodered.org/u/imdkthr)\
**Replies:** 1\
**Last updated:** [30 September 2019 09:46 UTC](https://discourse.nodered.org/t/node-red-on-ibm-bluemix-for-ibm-watson-iot-platform/16079 "2019-09-30T09:46:21Z")

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Using an unsupported version of Node.js You should upgrade to the latest Node.js LTS release whenever i open my node red ibm bluemix i have having these errors. it covers my flow tabs please provide a solution for thes…

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## [Validators depending oneditprepare](https://discourse.nodered.org/t/validators-depending-oneditprepare/2398)

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**Author:** [@Sineos](https://discourse.nodered.org/u/Sineos)\
**Replies:** 2\
**Last updated:** [30 September 2019 05:43 UTC](https://discourse.nodered.org/t/validators-depending-oneditprepare/2398 "2019-09-30T05:43:54Z")

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With oneditprepare I switch the html form elements: oneditprepare: function() { $("#node-input-ThresholdType").change(function() { if ($(this).val() === "fixed") { $(".form-row-ThresholdTypeFixed").show(); …

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## [Host web application in custom node](https://discourse.nodered.org/t/host-web-application-in-custom-node/16060)

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**Author:** [@BartButenaers](https://discourse.nodered.org/u/BartButenaers)\
**Replies:** 10\
**Last updated:** [29 September 2019 23:40 UTC](https://discourse.nodered.org/t/host-web-application-in-custom-node/16060 "2019-09-29T23:40:55Z")

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Hi folks, We need to develop a new node that is able to host a web application. The (third-party) web application consists out of a number of files: Would like to build a custom node that allows users to start/stop …

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## [TRIGGER NODE to set TOPIC also](https://discourse.nodered.org/t/trigger-node-to-set-topic-also/16043)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 9\
**Last updated:** [29 September 2019 16:53 UTC](https://discourse.nodered.org/t/trigger-node-to-set-topic-also/16043 "2019-09-29T16:53:21Z")

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I know it could be rare, but I guess this is one of those times. I am kind of using a trigger node as a watchdog kind of thing. It needs to send a message with a topic if something goes wrong. Alas there is no way to …

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## [Permission error when trying to install nodes](https://discourse.nodered.org/t/permission-error-when-trying-to-install-nodes/12310)

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**Author:** [@Juhputti](https://discourse.nodered.org/u/Juhputti)\
**Replies:** 8\
**Last updated:** [29 September 2019 21:56 UTC](https://discourse.nodered.org/t/permission-error-when-trying-to-install-nodes/12310 "2019-09-29T21:56:50Z")

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I did a clean OS X install. I installed node and node red as before and back then I didn't have any problems. Now with this fresh installation I cannot install anything from manage palettes or using npm install command. …

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## [How to import subscribe message into C program?](https://discourse.nodered.org/t/how-to-import-subscribe-message-into-c-program/16032)

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**Author:** [@rcbuck](https://discourse.nodered.org/u/rcbuck)\
**Replies:** 8\
**Last updated:** [29 September 2019 20:58 UTC](https://discourse.nodered.org/t/how-to-import-subscribe-message-into-c-program/16032 "2019-09-29T20:58:27Z")

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I have a system designed using an ESP32 control board and Node-Red for the web interface. The system has an alarm that can be armed from either the Raspberry Pi running Node-Red or from the ESP32 board. There is an LED o…

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## [Show/Hide or Enable/Disable a Dashboard switch](https://discourse.nodered.org/t/show-hide-or-enable-disable-a-dashboard-switch/16012)

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**Author:** [@nicedevil](https://discourse.nodered.org/u/nicedevil)\
**Replies:** 3\
**Last updated:** [29 September 2019 19:06 UTC](https://discourse.nodered.org/t/show-hide-or-enable-disable-a-dashboard-switch/16012 "2019-09-29T19:06:15Z")

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Hey guys, I'm back with new questions :slight\_smile: I managed to get a PIN pad on my dashboard. I have one switch that should not accidentialy pressed while doing finger stuff on my smartphone :stuck\_out\_tongue: So my…

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## [How to retrieve "Site Sizes" from my custom node source code](https://discourse.nodered.org/t/how-to-retrieve-site-sizes-from-my-custom-node-source-code/9681)

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**Author:** [@Thierry](https://discourse.nodered.org/u/Thierry)\
**Replies:** 22\
**Last updated:** [29 September 2019 17:43 UTC](https://discourse.nodered.org/t/how-to-retrieve-site-sizes-from-my-custom-node-source-code/9681 "2019-09-29T17:43:52Z")

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Hello, I am creating a custom dashboard node (custom chart based on d3 library) by using addWidget API. To get my chart displayed correctly inside the group (meaning to avoid my chart being too big and displayed the scro…

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## [Cannot install "node-red" snap](https://discourse.nodered.org/t/cannot-install-node-red-snap/16055)

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**Author:** [@pmrit](https://discourse.nodered.org/u/pmrit)\
**Replies:** 1\
**Last updated:** [29 September 2019 15:21 UTC](https://discourse.nodered.org/t/cannot-install-node-red-snap/16055 "2019-09-29T15:21:15Z")

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HI As you noticed I am new in this forum. But reason why O am writing is a preoblem what I having during installation. I have installed Ububtu 18 LTS. Ihave onstalled snap and after "snap install node-red" command I ha…

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## [SWITCH node - bug?](https://discourse.nodered.org/t/switch-node-bug/16058)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 5\
**Last updated:** [29 September 2019 14:12 UTC](https://discourse.nodered.org/t/switch-node-bug/16058 "2019-09-29T14:12:31Z")

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(Ok, no more "bug" section) I am using a few switch nodes. Alas they are BIG. Well, just now I am up to 14 outputs. Recently when I open them, scrolling inside them is painful. From memory the list starts at the bo…

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## [Cannot hide a dashboard TAB that has a spacer](https://discourse.nodered.org/t/cannot-hide-a-dashboard-tab-that-has-a-spacer/16045)

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**Author:** [@Andrei](https://discourse.nodered.org/u/Andrei)\
**Replies:** 1\
**Last updated:** [29 September 2019 13:22 UTC](https://discourse.nodered.org/t/cannot-hide-a-dashboard-tab-that-has-a-spacer/16045 "2019-09-29T13:22:47Z")

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This particular environment: 28 Sep 23:07:55 - \[info\] Node-RED version: v0.20.7 28 Sep 23:07:55 - \[info\] Node.js version: v8.11.1 28 Sep 23:07:55 - \[info\] Windows\_NT 10.0.17763 x64 LE 28 Sep 23:08:03 - \[info\] Dashbo…

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## [Designing a Node-RED "Twitter Wall"](https://discourse.nodered.org/t/designing-a-node-red-twitter-wall/16031)

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**Author:** [@hazymat](https://discourse.nodered.org/u/hazymat)\
**Replies:** 13\
**Last updated:** [29 September 2019 13:02 UTC](https://discourse.nodered.org/t/designing-a-node-red-twitter-wall/16031 "2019-09-29T13:02:24Z")

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Aim: a school we work with wants to see photos and text from the last e.g. 4 tweets, to be displayed on a large screen in the entrance foyer. I'd like to do this using Node-RED because it's familiar to me, and I like the…

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## [Pulling apart message arrays](https://discourse.nodered.org/t/pulling-apart-message-arrays/16041)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 9\
**Last updated:** [29 September 2019 10:23 UTC](https://discourse.nodered.org/t/pulling-apart-message-arrays/16041 "2019-09-29T10:23:58Z")

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Ok, I'm stuck. Messing around with a message which looks like: n,r,g,b (String but the values are numbers) n ranges from 0 to 7. the others from 0 to 256. (Guess what I am doing - rhetorical) Because I am curious …

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## [Who wants to do a proof read on some notes I made?](https://discourse.nodered.org/t/who-wants-to-do-a-proof-read-on-some-notes-i-made/16044)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 1\
**Last updated:** [29 September 2019 12:09 UTC](https://discourse.nodered.org/t/who-wants-to-do-a-proof-read-on-some-notes-i-made/16044 "2019-09-29T12:09:04Z")

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I've just bashed out a bit of stuff on how to use Node-Red. I don't want to put it here now as is, as I am sure I will get torn apart. I'd prefer only a couple of people have a check read of it first.

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## [Stuck simulating errors. (try 2)](https://discourse.nodered.org/t/stuck-simulating-errors-try-2/16050)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 3\
**Last updated:** [29 September 2019 11:50 UTC](https://discourse.nodered.org/t/stuck-simulating-errors-try-2/16050 "2019-09-29T11:50:35Z")

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I have had a few problems recently and it is the routine that has bitten me on the b\*m. And typically it is the error routine which is at fault. To try and catch the error, and find the problem I separated the two part…

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## [LINK nodes.... Viability question](https://discourse.nodered.org/t/link-nodes-viability-question/16042)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 3\
**Last updated:** [29 September 2019 10:30 UTC](https://discourse.nodered.org/t/link-nodes-viability-question/16042 "2019-09-29T10:30:39Z")

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I'm just wondering. Say I have a link out node going to other flows. Or more so for this question: To another flow at multiple locations. That is: on the other flow there are several link in nodes which link back …

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