# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=880

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

**Page:** 881

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## [Why did some address on modbus affect another address on node red GUI](https://discourse.nodered.org/t/why-did-some-address-on-modbus-affect-another-address-on-node-red-gui/11764)

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**Author:** [@afiqkimii](https://discourse.nodered.org/u/afiqkimii)\
**Replies:** 4\
**Last updated:** [2 June 2019 16:27 UTC](https://discourse.nodered.org/t/why-did-some-address-on-modbus-affect-another-address-on-node-red-gui/11764 "2019-06-02T16:27:39Z")

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Hi this is my project using digital modbus using rs485 connection to fanless pc. This is the dasboard gui.DI1,DI2,DI3,DI4 all to respective address as in the manual of modbus configuration of rs485 connection. As you…

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## [Node-Red and Watson Assistant](https://discourse.nodered.org/t/node-red-and-watson-assistant/11769)

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**Author:** [@EmilyLarkin00](https://discourse.nodered.org/u/EmilyLarkin00)\
**Replies:** 0\
**Last updated:** [2 June 2019 15:54 UTC](https://discourse.nodered.org/t/node-red-and-watson-assistant/11769 "2019-06-02T15:54:54Z")

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Hi, Please bare with me, this is my first time posting and I'm not sure where else to go for help. I've made a Node-Red flow that talks to my Chatbot in Watson Assistant. The actual talking works perfectly. What I am …

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## [Alexa-home-conf - Error: connect ECONNREFUSED 34.240.81.189:888](https://discourse.nodered.org/t/alexa-home-conf-error-connect-econnrefused-34-240-81-189-888/11765)

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**Author:** [@jaeti01](https://discourse.nodered.org/u/jaeti01)\
**Replies:** 0\
**Last updated:** [2 June 2019 15:06 UTC](https://discourse.nodered.org/t/alexa-home-conf-error-connect-econnrefused-34-240-81-189-888/11765 "2019-06-02T15:06:29Z")

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Anyone here using node-red-contrib-alexa-home-skill? I configured a simple flow with it and it keeps disconnecting. node-red log shows: 2 Jun 14:58:45 - \[error\] \[alexa-home-conf:c05e67ac.2ebed8\] Error: connect ECONNRE…

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## [HELP!@ where did those files go](https://discourse.nodered.org/t/help-where-did-those-files-go/11740)

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**Author:** [@Bazmundi](https://discourse.nodered.org/u/Bazmundi)\
**Replies:** 17\
**Last updated:** [2 June 2019 10:17 UTC](https://discourse.nodered.org/t/help-where-did-those-files-go/11740 "2019-06-02T10:17:43Z")

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I installed node-red-contrib-simple-weekly-scheduler from "Manage Palette". Now it didn't offer a means to add event titles so I thought I would hack the source in situ to add a prompt to add an event title during event…

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## [Inject node at a specific time](https://discourse.nodered.org/t/inject-node-at-a-specific-time/11747)

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**Author:** [@ALOKA1432](https://discourse.nodered.org/u/ALOKA1432)\
**Replies:** 5\
**Last updated:** [2 June 2019 07:24 UTC](https://discourse.nodered.org/t/inject-node-at-a-specific-time/11747 "2019-06-02T07:24:45Z")

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The inject node shows the GMT when checked by just injecting timestamp to a debug node. I wanted to trigger an event at a specific time (for my case the calculated IST (Indian Standard Time) time which is GMT+5:30 Hrs). …

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## [Error: getaddrinfo ENOTFOUND](https://discourse.nodered.org/t/error-getaddrinfo-enotfound/11754)

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**Author:** [@HKKKK](https://discourse.nodered.org/u/HKKKK)\
**Replies:** 4\
**Last updated:** [2 June 2019 06:09 UTC](https://discourse.nodered.org/t/error-getaddrinfo-enotfound/11754 "2019-06-02T06:09:02Z")

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In node-red, when using the http-request node with the following url http://dccxc072.pok.ibm.com:4001/demo, I get the following error Error: getaddrinfo ENOTFOUND dccxc072.pok.ibm.com dccxc072.pok.ibm.com:4001 Any idea…

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## [Sensor trigger camera issue](https://discourse.nodered.org/t/sensor-trigger-camera-issue/11567)

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**Author:** [@mshaz](https://discourse.nodered.org/u/mshaz)\
**Replies:** 2\
**Last updated:** [1 June 2019 21:29 UTC](https://discourse.nodered.org/t/sensor-trigger-camera-issue/11567 "2019-06-01T21:29:53Z")

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Hi I need help , I have a sensor that triggers camera when value is high but since i get the data by polling every few seconds, it will keep on triggering the camera while sensors are high state. I only want to trigger…

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## [IoT readings not returned to zero when no power](https://discourse.nodered.org/t/iot-readings-not-returned-to-zero-when-no-power/11756)

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**Author:** [@mshaz](https://discourse.nodered.org/u/mshaz)\
**Replies:** 1\
**Last updated:** [1 June 2019 21:29 UTC](https://discourse.nodered.org/t/iot-readings-not-returned-to-zero-when-no-power/11756 "2019-06-01T21:29:35Z")

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Hi I have data coming from thingspeak and when I pull the power off the data not returned to zero bcos of delay in sending data to node-red platform. How do I fix this ?

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## [Testing the trigger node](https://discourse.nodered.org/t/testing-the-trigger-node/11752)

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**Author:** [@Andrei](https://discourse.nodered.org/u/Andrei)\
**Replies:** 2\
**Last updated:** [1 June 2019 19:06 UTC](https://discourse.nodered.org/t/testing-the-trigger-node/11752 "2019-06-01T19:06:00Z")

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I am running Node-REd v1 beta.2. I wonder if anyone can do a real quick testing to double check the behavior of the trigger node. I noticed that the blue square indicator in the trigger node will appear only the very fi…

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## [Node-red docker gui wont load after updating module(s)](https://discourse.nodered.org/t/node-red-docker-gui-wont-load-after-updating-module-s/11744)

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**Author:** [@marcusone](https://discourse.nodered.org/u/marcusone)\
**Replies:** 5\
**Last updated:** [1 June 2019 16:50 UTC](https://discourse.nodered.org/t/node-red-docker-gui-wont-load-after-updating-module-s/11744 "2019-06-01T16:50:16Z")

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Running node-red via docker (latest) and up to date as of April last release (v0.20.5). Works fine, however, went to update my modules, even just doing one, causes node-red to fail to load again, and I have to revert ba…

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## [Node-red performance with and without the editor](https://discourse.nodered.org/t/node-red-performance-with-and-without-the-editor/11717)

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**Author:** [@dennishvo](https://discourse.nodered.org/u/dennishvo)\
**Replies:** 3\
**Last updated:** [1 June 2019 06:36 UTC](https://discourse.nodered.org/t/node-red-performance-with-and-without-the-editor/11717 "2019-06-01T06:36:29Z")

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Is there a significant performance impact on flows by the mere fact that the node-red editor is running? I'm asking out of curiosity. If there's any documentation available that explains the interaction between nodejs an…

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## [Help! Buffer array, SQL insert help](https://discourse.nodered.org/t/help-buffer-array-sql-insert-help/11737)

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**Author:** [@haroon-rehman](https://discourse.nodered.org/u/haroon-rehman)\
**Replies:** 1\
**Last updated:** [1 June 2019 05:43 UTC](https://discourse.nodered.org/t/help-buffer-array-sql-insert-help/11737 "2019-06-01T05:43:28Z")

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Help!!! Stuck on this for past 1 day! Hi I'm trying to save a buffer array to SQL msg.payload : buffer\[211584\] \[ 37, 80, 68, 70 ...\] I'm using the MSSQL node to insert this data in a table in the varbinary(max) colum…

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## [Trigger node help - please](https://discourse.nodered.org/t/trigger-node-help-please/11728)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 10\
**Last updated:** [1 June 2019 00:21 UTC](https://discourse.nodered.org/t/trigger-node-help-please/11728 "2019-06-01T00:21:18Z")

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Forgive me if I've asked this before, but from what I remember it was the DELAY node, not the TRIGGER node. Here's the part of the flow..... \[{"id":"178ae8cd.12b0d7","type":"trigger","z":"15af81c5.64999e","op1":"","op2…

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## [Payload Timer preferably with UI](https://discourse.nodered.org/t/payload-timer-preferably-with-ui/11733)

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**Author:** [@Ianszh](https://discourse.nodered.org/u/Ianszh)\
**Replies:** 6\
**Last updated:** [31 May 2019 18:58 UTC](https://discourse.nodered.org/t/payload-timer-preferably-with-ui/11733 "2019-05-31T18:58:29Z")

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Hello, I have built yet another watering system which has 4 capacitive moisture sensors, 4 water solenoids, 1 pump, and 5 relays. Everything's working fine, the "brains" is Node Red and I'm sending the sensor readings …

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## [PiSense HAT Disconnected - both ends!](https://discourse.nodered.org/t/pisense-hat-disconnected-both-ends/6935)

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**Author:** [@baqwas](https://discourse.nodered.org/u/baqwas)\
**Replies:** 9\
**Last updated:** [31 May 2019 16:44 UTC](https://discourse.nodered.org/t/pisense-hat-disconnected-both-ends/6935 "2019-05-31T16:44:36Z")

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Hello, The "connection lost" issue at https://discourse.nodered.org/t/node-red-connection-lost/1724 does not apply to my situation. I'm using node (v11.6.0) and npm (6.5.0-next.0) and stretch will all updates/upgrades a…

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## [Node Red Serial Com trouble](https://discourse.nodered.org/t/node-red-serial-com-trouble/11711)

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**Author:** [@ablinkin28](https://discourse.nodered.org/u/ablinkin28)\
**Replies:** 6\
**Last updated:** [31 May 2019 13:26 UTC](https://discourse.nodered.org/t/node-red-serial-com-trouble/11711 "2019-05-31T13:26:54Z")

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Hello this is my first post so let me know what info i am missing. I am currently using the node red serial nodes to communicate to a Haas machine to get data out. I am using node red on a RPI3 with a USB serial adapter.…

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## [Stopwatch event for a newbie](https://discourse.nodered.org/t/stopwatch-event-for-a-newbie/11696)

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**Author:** [@orandaadnaro](https://discourse.nodered.org/u/orandaadnaro)\
**Replies:** 5\
**Last updated:** [31 May 2019 12:55 UTC](https://discourse.nodered.org/t/stopwatch-event-for-a-newbie/11696 "2019-05-31T12:55:47Z")

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I'm new to node red and javascript, so forgive me if this has already been covered elsewhere. Im trying to record the length of time a boiler is switched on. I intend to store and or display the duration into a graph (…

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## [My Node has not been indexed by NodeFlow](https://discourse.nodered.org/t/my-node-has-not-been-indexed-by-nodeflow/11727)

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**Author:** [@jmcanterafonseca](https://discourse.nodered.org/u/jmcanterafonseca)\
**Replies:** 2\
**Last updated:** [31 May 2019 12:04 UTC](https://discourse.nodered.org/t/my-node-has-not-been-indexed-by-nodeflow/11727 "2019-05-31T12:04:51Z")

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Hi there, any ideas about could be happening? Thanks

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## [RFID Tag Scanner to enable buttons/menus](https://discourse.nodered.org/t/rfid-tag-scanner-to-enable-buttons-menus/11695)

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**Author:** [@lozzer65](https://discourse.nodered.org/u/lozzer65)\
**Replies:** 11\
**Last updated:** [31 May 2019 11:47 UTC](https://discourse.nodered.org/t/rfid-tag-scanner-to-enable-buttons-menus/11695 "2019-05-31T11:47:48Z")

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Hi I am trying to disable a button until an RFID tag is scanned with a valid code on it. I am struggling with this as I am fairly new to Node-Red. The RFID scanner acts just like a keyboard. I have had it scan into a …

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## [Interaction between node-red and nodejs app](https://discourse.nodered.org/t/interaction-between-node-red-and-nodejs-app/11656)

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**Author:** [@hathemi](https://discourse.nodered.org/u/hathemi)\
**Replies:** 20\
**Last updated:** [31 May 2019 08:28 UTC](https://discourse.nodered.org/t/interaction-between-node-red-and-nodejs-app/11656 "2019-05-31T08:28:56Z")

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i have a NR flow contains an s7 node. Any tips to guide me how to display data sent from my flow to nodejs app ? i have tried this example https://nodered.org/docs/embedding and i'am stuck on how to use data sent from m…

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## [“msgpack” & “zlib” & “http” example](https://discourse.nodered.org/t/msgpack-zlib-http-example/11712)

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**Author:** [@ExpZeros](https://discourse.nodered.org/u/ExpZeros)\
**Replies:** 1\
**Last updated:** [31 May 2019 08:21 UTC](https://discourse.nodered.org/t/msgpack-zlib-http-example/11712 "2019-05-31T08:21:47Z")

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I would like to send a JSON package that gets “msgpack” and then compressed down using “zlib” down a post message to a server. I tried to find examples online (here in the forum and on the internet) and could not find o…

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## [Npm error when installing beta](https://discourse.nodered.org/t/npm-error-when-installing-beta/11710)

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**Author:** [@pvanklink](https://discourse.nodered.org/u/pvanklink)\
**Replies:** 2\
**Last updated:** [31 May 2019 07:58 UTC](https://discourse.nodered.org/t/npm-error-when-installing-beta/11710 "2019-05-31T07:58:38Z")

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Hi i installed node-red version v 0.20.5 on a raspberry pi 3b+ with the latest raspbian stretch desktop with this command: bash \<(curl -sL https://raw.githubusercontent.com/node-red/raspbian-deb-package/master/resource…

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## [Multiple Y axis in chart (line graph)](https://discourse.nodered.org/t/multiple-y-axis-in-chart-line-graph/1051)

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**Author:** [@imadouino](https://discourse.nodered.org/u/imadouino)\
**Replies:** 4\
**Last updated:** [31 May 2019 06:01 UTC](https://discourse.nodered.org/t/multiple-y-axis-in-chart-line-graph/1051 "2019-05-31T06:01:10Z")

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Im looking to display multiple y axis on a chart with the chart in node-red: topic: 1 Ymin and Ymax (0-10) topic: 2 Ymin and Ymax (0-1000) Thank you for your help.

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## [How to get the node-red and drag the event of the node](https://discourse.nodered.org/t/how-to-get-the-node-red-and-drag-the-event-of-the-node/11661)

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**Author:** [@limengsong](https://discourse.nodered.org/u/limengsong)\
**Replies:** 1\
**Last updated:** [29 May 2019 09:09 UTC](https://discourse.nodered.org/t/how-to-get-the-node-red-and-drag-the-event-of-the-node/11661 "2019-05-29T09:09:05Z")

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I want to get the node-red and drag the event of the node. such as: There are some nodes that can be dragged to the workspace, and some nodes are forbidden to drag to the workspace. Do not know how to judge? Request …

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## [This is a new (weird) error](https://discourse.nodered.org/t/this-is-a-new-weird-error/3675)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 8\
**Last updated:** [30 May 2019 20:03 UTC](https://discourse.nodered.org/t/this-is-a-new-weird-error/3675 "2019-05-30T20:03:40Z")

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While optimising some flows, etc, I got this error: FileError: 'http://192.168.0.99:1880/ui/css/app.min.less' wasn't found (0) in app.min.less Google isn't that helpful. Anyone?

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## [Subflows stopped working suddenly](https://discourse.nodered.org/t/subflows-stopped-working-suddenly/11703)

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**Author:** [@albydnc](https://discourse.nodered.org/u/albydnc)\
**Replies:** 6\
**Last updated:** [30 May 2019 19:41 UTC](https://discourse.nodered.org/t/subflows-stopped-working-suddenly/11703 "2019-05-30T19:41:18Z")

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Hi, today my subflows stopped working without any reason. This is the feedback from the console. NodeRED 0.19.6 on AWS EC2 Ubuntu instance TypeError: Cannot read property 'id' of undefined at createSubflow (/usr/lib/…

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## [Serialport fails with Arduino mega](https://discourse.nodered.org/t/serialport-fails-with-arduino-mega/11689)

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**Author:** [@vitorbarao](https://discourse.nodered.org/u/vitorbarao)\
**Replies:** 3\
**Last updated:** [30 May 2019 17:28 UTC](https://discourse.nodered.org/t/serialport-fails-with-arduino-mega/11689 "2019-05-30T17:28:25Z")

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Hi friends, could you help me please? Very annoying problem that I can't solve even after reading hundreds of posts here: I have a flow that reads data from an Arduino mega via Serialport in, processes them and send s…

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## [Formatting a date with Angular inside a Template table](https://discourse.nodered.org/t/formatting-a-date-with-angular-inside-a-template-table/11621)

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**Author:** [@Bobo](https://discourse.nodered.org/u/Bobo)\
**Replies:** 6\
**Last updated:** [30 May 2019 16:06 UTC](https://discourse.nodered.org/t/formatting-a-date-with-angular-inside-a-template-table/11621 "2019-05-30T16:06:18Z")

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I was hoping to format a date inside a table in the Template node using the following code: \<td\>{{msg.payload\[$index\].alarm\_date | date: 'MMM d, y H:mm:ss' : '+1200' }}\</td\> The part of the code that does NOT work is t…

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## [Topic getting lost/overridden](https://discourse.nodered.org/t/topic-getting-lost-overridden/11611)

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**Author:** [@jamestutton](https://discourse.nodered.org/u/jamestutton)\
**Replies:** 9\
**Last updated:** [30 May 2019 14:50 UTC](https://discourse.nodered.org/t/topic-getting-lost-overridden/11611 "2019-05-30T14:50:05Z")

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Have a strange issue. Broke it down to a fairly basic example. Below. Node red version Using v0.20.5. Now when It comes out of first node I get 2 msgs as expected in the debug with the 2 topics. But when it goes throu…

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## [Turn on Hue light(s) on schedule based on presence](https://discourse.nodered.org/t/turn-on-hue-light-s-on-schedule-based-on-presence/11701)

<div class="topic-metadata">

**Author:** [@techdesk](https://discourse.nodered.org/u/techdesk)\
**Replies:** 1\
**Last updated:** [30 May 2019 14:31 UTC](https://discourse.nodered.org/t/turn-on-hue-light-s-on-schedule-based-on-presence/11701 "2019-05-30T14:31:31Z")

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Have a Hue light connected via home assistant. I Can turn hue light on using light scheduler no problem. Want to only turn the light on according to the schedule if the person is home. Have presence working already an…

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