# General **URL:** https://discourse.nodered.org/c/general/7.md?page=944 [Latest](https://discourse.nodered.org/latest.md) · [Categories](https://discourse.nodered.org/categories.md) · [Tags](https://discourse.nodered.org/tags.md) **Page:** 945 --- ## [How to use array element to define another multi-dimension array?](https://discourse.nodered.org/t/how-to-use-array-element-to-define-another-multi-dimension-array/3555)
**Author:** [@Alexwuhamilton](https://discourse.nodered.org/u/Alexwuhamilton)\ **Replies:** 11\ **Last updated:** [4 October 2018 14:38 UTC](https://discourse.nodered.org/t/how-to-use-array-element-to-define-another-multi-dimension-array/3555 "2018-10-04T14:38:40Z")
Hello, I am stuck with these following code for a while. Thanks in advance for any help! I try to use msg.payload\[i\]\[j\].labels\[i\] to represent msg.payload\[i\]\[j\].com16\_19 and msg.payload\[i\]\[j\].com16\_16. here is my code … --- ## [Open Windows File](https://discourse.nodered.org/t/open-windows-file/3671)
**Author:** [@ryanjohnson00](https://discourse.nodered.org/u/ryanjohnson00)\ **Replies:** 3\ **Last updated:** [4 October 2018 05:53 UTC](https://discourse.nodered.org/t/open-windows-file/3671 "2018-10-04T05:53:33Z")
We have code almost working to open an external file. The code below strips out the second colon. If I put in the second colon manually then I can get the file to open. Is there any way to get this to work? var http … --- ## [Performance quesrion re date and time in lots of flows](https://discourse.nodered.org/t/performance-quesrion-re-date-and-time-in-lots-of-flows/3504)
**Author:** [@craigcurtin](https://discourse.nodered.org/u/craigcurtin)\ **Replies:** 9\ **Last updated:** [3 October 2018 23:50 UTC](https://discourse.nodered.org/t/performance-quesrion-re-date-and-time-in-lots-of-flows/3504 "2018-10-03T23:50:12Z")
Guys, If i end up with lots of lfows that are accessing Date and or time for functions and for logging etc - am i better off having a single Node on a flow that sets a global date and time object (in my desirred format… --- ## [Execution of Node when previous node output is Undefined](https://discourse.nodered.org/t/execution-of-node-when-previous-node-output-is-undefined/3665)
**Author:** [@jewendt](https://discourse.nodered.org/u/jewendt)\ **Replies:** 5\ **Last updated:** [3 October 2018 21:55 UTC](https://discourse.nodered.org/t/execution-of-node-when-previous-node-output-is-undefined/3665 "2018-10-03T21:55:07Z")
Is is normal behavior for a node node not to operate if a previous node is sending a payload that is undefined? I my case there is a node that I am using that's output is 'undefined'. I have linked that change node how… --- ## [Used Websockets](https://discourse.nodered.org/t/used-websockets/3648)
**Author:** [@MarkusR](https://discourse.nodered.org/u/MarkusR)\ **Replies:** 4\ **Last updated:** [3 October 2018 20:38 UTC](https://discourse.nodered.org/t/used-websockets/3648 "2018-10-03T20:38:33Z")
hello, does node-red v0.19.4 using regular web sockets? (it runs at my raspberry pi 3) i am using basic for android and this webview ui control show just a white page of my "home page", only notifys pop up. in a brows… --- ## [Eufy Lumos node](https://discourse.nodered.org/t/eufy-lumos-node/3285)
**Author:** [@Flixm](https://discourse.nodered.org/u/Flixm)\ **Replies:** 7\ **Last updated:** [3 October 2018 18:44 UTC](https://discourse.nodered.org/t/eufy-lumos-node/3285 "2018-10-03T18:44:10Z")
Hi, Today I receive a Eufy Lumos smart bulb. Anyone knows if there's a node to trigger and check the status of that bulb? Eufy is the smart product part from Anker. Maybe there's a node for products from the same manuf… --- ## [Button to trigger snmpset](https://discourse.nodered.org/t/button-to-trigger-snmpset/3540)
**Author:** [@RackIoT](https://discourse.nodered.org/u/RackIoT)\ **Replies:** 5\ **Last updated:** [3 October 2018 08:37 UTC](https://discourse.nodered.org/t/button-to-trigger-snmpset/3540 "2018-10-03T08:37:21Z")
HI All I am a real noob at pi/node-red, so please excuse what may seem quite simple, but I have tried every way I can research to get this working but cant find a solution. I need to do a simple thing. Click a button … --- ## [Push a flow as a nodeJS CF app](https://discourse.nodered.org/t/push-a-flow-as-a-nodejs-cf-app/3646)
**Author:** [@troyibm](https://discourse.nodered.org/u/troyibm)\ **Replies:** 1\ **Last updated:** [3 October 2018 06:03 UTC](https://discourse.nodered.org/t/push-a-flow-as-a-nodejs-cf-app/3646 "2018-10-03T06:03:23Z")
Hi, I'm wondering if there is a way that I can take a node-red json of a flow and create a nodeJS application from it. :slight\_smile: Or maybe more reasonable would be to push the node-red runtime (editor off) with the… --- ## [Not possible to communicate via com port with rfxcom](https://discourse.nodered.org/t/not-possible-to-communicate-via-com-port-with-rfxcom/1909)
**Author:** [@koentje84](https://discourse.nodered.org/u/koentje84)\ **Replies:** 7\ **Last updated:** [2 October 2018 21:52 UTC](https://discourse.nodered.org/t/not-possible-to-communicate-via-com-port-with-rfxcom/1909 "2018-10-02T21:52:41Z")
Hi, I have an issue when I wan to use the node-red-contribit-rfcom node. It doesn't want to communicate with the RFXcom device. It complains over ReadIOCompletion. If I use the software that comes with the RFXcom ever… --- ## [Node-red-contrib-usbhid raspberry PI 3](https://discourse.nodered.org/t/node-red-contrib-usbhid-raspberry-pi-3/3532)
**Author:** [@jewendt](https://discourse.nodered.org/u/jewendt)\ **Replies:** 5\ **Last updated:** [2 October 2018 20:34 UTC](https://discourse.nodered.org/t/node-red-contrib-usbhid-raspberry-pi-3/3532 "2018-10-02T20:34:18Z")
I am trying to utilize this node on a Raspberry PI 3 however it errors during install of the node. I traced it back to the original usbhid not being compiled for the PI3 arm chip. Can someone help me figure out how to … --- ## [Extract different values from a multiline string](https://discourse.nodered.org/t/extract-different-values-from-a-multiline-string/3577)
**Author:** [@AD3D](https://discourse.nodered.org/u/AD3D)\ **Replies:** 24\ **Last updated:** [2 October 2018 19:02 UTC](https://discourse.nodered.org/t/extract-different-values-from-a-multiline-string/3577 "2018-10-02T19:02:49Z")
I have a device that shows a webpage with some info. (see picture) I found two ways to get info from that webpage. 1: and 2: Because I am just new to this and learning, (much to learn, I know) I am not sure what wou… --- ## [Save data from a knx energy saver](https://discourse.nodered.org/t/save-data-from-a-knx-energy-saver/3630)
**Author:** [@aabbas](https://discourse.nodered.org/u/aabbas)\ **Replies:** 1\ **Last updated:** [2 October 2018 15:41 UTC](https://discourse.nodered.org/t/save-data-from-a-knx-energy-saver/3630 "2018-10-02T15:41:25Z")
I am currently using a kes - knx energy saver, I would like some ideas as I am new to this area. Would it be possible for me to save the data obtained by the energy saver at a certain time in a file ? Thank you for inta… --- ## [Execute a http request on specific time](https://discourse.nodered.org/t/execute-a-http-request-on-specific-time/3624)
**Author:** [@rednode](https://discourse.nodered.org/u/rednode)\ **Replies:** 6\ **Last updated:** [2 October 2018 14:36 UTC](https://discourse.nodered.org/t/execute-a-http-request-on-specific-time/3624 "2018-10-02T14:36:08Z")
Hi, i have some cronjobs which i want to migrate to nodered. i am very new to nodered and have no idea how to execute an http request on a predefined time. what i have done is, ive created a timestamp injection and ref… --- ## [Esri Map Services](https://discourse.nodered.org/t/esri-map-services/3604)
**Author:** [@smulberry](https://discourse.nodered.org/u/smulberry)\ **Replies:** 5\ **Last updated:** [2 October 2018 13:47 UTC](https://discourse.nodered.org/t/esri-map-services/3604 "2018-10-02T13:47:01Z")
New to Node-RED and am tooling around with the WorldMap Node. I'm interested to see if I can overlay this map service: https://nowcoast.noaa.gov/arcgis/rest/services/nowcoast/radar\_meteo\_imagery\_nexrad\_time/MapServer Th… --- ## [SNMP-SET not showing during an SNMPWalk](https://discourse.nodered.org/t/snmp-set-not-showing-during-an-snmpwalk/1339)
**Author:** [@desertadmin](https://discourse.nodered.org/u/desertadmin)\ **Replies:** 0\ **Last updated:** [4 July 2018 23:31 UTC](https://discourse.nodered.org/t/snmp-set-not-showing-during-an-snmpwalk/1339 "2018-07-04T23:31:02Z")
So we are using the SNMP-SET but it does not appear to open the SNMP server service on our Raspberry Pi 3. So we started the local SNMP and that works when we do a SNMPWalk but… I am not sure how to see our OID or how t… --- ## [Can I control the multiple gpio pins of range pi through the internet?](https://discourse.nodered.org/t/can-i-control-the-multiple-gpio-pins-of-range-pi-through-the-internet/3621)
**Author:** [@vincitygialam](https://discourse.nodered.org/u/vincitygialam)\ **Replies:** 1\ **Last updated:** [2 October 2018 10:25 UTC](https://discourse.nodered.org/t/can-i-control-the-multiple-gpio-pins-of-range-pi-through-the-internet/3621 "2018-10-02T10:25:32Z")
Can I control the multiple gpio pins of range pi through the internet? --- ## [Stop actors at night](https://discourse.nodered.org/t/stop-actors-at-night/3616)
**Author:** [@SirNoob](https://discourse.nodered.org/u/SirNoob)\ **Replies:** 4\ **Last updated:** [2 October 2018 10:06 UTC](https://discourse.nodered.org/t/stop-actors-at-night/3616 "2018-10-02T10:06:58Z")
Hi, I want to make a flow which turns on the light when it gets too dark. But only at the day, in the night I want to make a node, which stops the light to turn on. But the sensor should still gather the lux data. So… --- ## [Problem after clean install nodered all modules erased](https://discourse.nodered.org/t/problem-after-clean-install-nodered-all-modules-erased/3600)
**Author:** [@Giaitzoglou](https://discourse.nodered.org/u/Giaitzoglou)\ **Replies:** 2\ **Last updated:** [2 October 2018 07:51 UTC](https://discourse.nodered.org/t/problem-after-clean-install-nodered-all-modules-erased/3600 "2018-10-02T07:51:19Z")
Hi so I have been using nodered with Jessie on my raspberry pi 3 for almost a year now no problem but I decided to make a new install using stretch so I did I firstly downloaded raspbian and after dietpi .At my first att… --- ## [ThankYou ThankYou ThankYou for extra function](https://discourse.nodered.org/t/thankyou-thankyou-thankyou-for-extra-function/3602)
**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\ **Replies:** 0\ **Last updated:** [1 October 2018 23:49 UTC](https://discourse.nodered.org/t/thankyou-thankyou-thankyou-for-extra-function/3602 "2018-10-01T23:49:20Z")
I know it has been out for a while and I maybe should have seen it sooner. But thanks very much for the extra "function" that when you are editing code in a node (say Function node) there is the little button to maximis… --- ## [Function node: output labels](https://discourse.nodered.org/t/function-node-output-labels/3598)
**Author:** [@Sineos](https://discourse.nodered.org/u/Sineos)\ **Replies:** 1\ **Last updated:** [1 October 2018 21:33 UTC](https://discourse.nodered.org/t/function-node-output-labels/3598 "2018-10-01T21:33:40Z")
Is it possible to dynamically assign labels for (multiple) outputs in a functions node? --- ## [Catch node not catching](https://discourse.nodered.org/t/catch-node-not-catching/3414)
**Author:** [@wb666greene](https://discourse.nodered.org/u/wb666greene)\ **Replies:** 17\ **Last updated:** [1 October 2018 19:05 UTC](https://discourse.nodered.org/t/catch-node-not-catching/3414 "2018-10-01T19:05:04Z")
This is still the ongoing issue I raised here: Memory leak, what am I doing wrong? Basically my node-red flow uses all the memory and my instance is terminated by the OOM killer. The "will" message to the MQTT server … --- ## [Node-red-contrib-ttn wont install](https://discourse.nodered.org/t/node-red-contrib-ttn-wont-install/3588)
**Author:** [@Gert-Jan](https://discourse.nodered.org/u/Gert-Jan)\ **Replies:** 1\ **Last updated:** [1 October 2018 18:38 UTC](https://discourse.nodered.org/t/node-red-contrib-ttn-wont-install/3588 "2018-10-01T18:38:00Z")
When i whant to install the node-red-contrib-ttn library bye the pallet i get the an error. It seems there is now library at this path? npm ERR! Error while executing: npm ERR! undefined ls-remote -h -t https://github… --- ## [Running on windows server 2012 r2](https://discourse.nodered.org/t/running-on-windows-server-2012-r2/3586)
**Author:** [@Andres](https://discourse.nodered.org/u/Andres)\ **Replies:** 8\ **Last updated:** [1 October 2018 14:32 UTC](https://discourse.nodered.org/t/running-on-windows-server-2012-r2/3586 "2018-10-01T14:32:55Z")
Hi everyone, so as the title suggest, i'm running node-red on windows server. The server reboots it self every night at some fixed time, and when it "comes back" does not start the session, but it starts all the services… --- ## [Convert date time to readable date time](https://discourse.nodered.org/t/convert-date-time-to-readable-date-time/3573)
**Author:** [@RogierQ](https://discourse.nodered.org/u/RogierQ)\ **Replies:** 3\ **Last updated:** [1 October 2018 13:21 UTC](https://discourse.nodered.org/t/convert-date-time-to-readable-date-time/3573 "2018-10-01T13:21:32Z")
from my database i get to the date and time like this : 2018-09-30T20:36:41.000Z but i want to to it nice and sexy in a html email like 30 september 2018, 20.36 i tried the format node and some examples from google lik… --- ## [Is Changing Node-RED starter app name not allowed on IBM Cloud?](https://discourse.nodered.org/t/is-changing-node-red-starter-app-name-not-allowed-on-ibm-cloud/3584)
**Author:** [@kenta\_okumura](https://discourse.nodered.org/u/kenta_okumura)\ **Replies:** 8\ **Last updated:** [1 October 2018 10:48 UTC](https://discourse.nodered.org/t/is-changing-node-red-starter-app-name-not-allowed-on-ibm-cloud/3584 "2018-10-01T10:48:48Z")
I created Node-RED starter app and created the flow by flow editor. I could access the flow editor and URL defined in the app correctly. But after I changed Node-RED starter app name on IBM Cloud and restarted, the ap… --- ## [See HTTP request in browser inspector or other way of verbose debug](https://discourse.nodered.org/t/see-http-request-in-browser-inspector-or-other-way-of-verbose-debug/3535)
**Author:** [@Marooned](https://discourse.nodered.org/u/Marooned)\ **Replies:** 3\ **Last updated:** [28 September 2018 16:23 UTC](https://discourse.nodered.org/t/see-http-request-in-browser-inspector-or-other-way-of-verbose-debug/3535 "2018-09-28T16:23:57Z")
Hi there I'm trying to get some data from API endpoint that is not well documented but it has been reverse engineered. I can easily make proper call using any known tool as curl or browser inspector. However, when I'm … --- ## [Create flow on Win10, send to Raspberry Pi](https://discourse.nodered.org/t/create-flow-on-win10-send-to-raspberry-pi/3571)
**Author:** [@EskiDad1](https://discourse.nodered.org/u/EskiDad1)\ **Replies:** 3\ **Last updated:** [30 September 2018 21:29 UTC](https://discourse.nodered.org/t/create-flow-on-win10-send-to-raspberry-pi/3571 "2018-09-30T21:29:11Z")
Hi Everyone, I am just starting to learn Node Red. I would like to develop a flow on my Win10 PC and transfer the flow to a Raspberry Pi. Is that possible? If so, is there a good place to look up the procedure? Than… --- ## [Function extract value help](https://discourse.nodered.org/t/function-extract-value-help/3563)
**Author:** [@cismarine](https://discourse.nodered.org/u/cismarine)\ **Replies:** 13\ **Last updated:** [30 September 2018 17:26 UTC](https://discourse.nodered.org/t/function-extract-value-help/3563 "2018-09-30T17:26:39Z")
hi guys, I have simple question. working on some rough data and want to extract just the value in function node: {"topic":"xiaomi/lounge/th","payload":{"cmd":"report","model":"weather.v1","sid":"158d000201b16a","short… --- ## [Telegram bot to channel](https://discourse.nodered.org/t/telegram-bot-to-channel/3547)
**Author:** [@mshaz](https://discourse.nodered.org/u/mshaz)\ **Replies:** 3\ **Last updated:** [30 September 2018 14:29 UTC](https://discourse.nodered.org/t/telegram-bot-to-channel/3547 "2018-09-30T14:29:04Z")
Hi I managed to post to telegram using telegram node but how to post in channel or group? I tried adding bot to channel but nothing happens? Do i set to post to channel from nodered? Thank you. --- ## [Rate Limit questions and Midi question](https://discourse.nodered.org/t/rate-limit-questions-and-midi-question/3557)
**Author:** [@johncohn](https://discourse.nodered.org/u/johncohn)\ **Replies:** 8\ **Last updated:** [30 September 2018 09:08 UTC](https://discourse.nodered.org/t/rate-limit-questions-and-midi-question/3557 "2018-09-30T09:08:19Z")
Hi friends.. I'm in need of a quick solution. I'm trying to change the tempo of MIDI music programmatically . The idea is to queue up all the midi notes from a fast playing input midi node and then rate limit them to sl… [Previous page](https://discourse.nodered.org/c/general/7.md?page=943) [Next page](https://discourse.nodered.org/c/general/7.md?page=945)