# Latest

**URL:** https://discourse.nodered.org/latest.md?page=1141

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

**Page:** 1142

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## [MongoDb and Nodered](https://discourse.nodered.org/t/mongodb-and-nodered/22945)

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**Author:** [@bouali](https://discourse.nodered.org/u/bouali)\
**Replies:** 1\
**Last updated:** [10 March 2020 21:29 UTC](https://discourse.nodered.org/t/mongodb-and-nodered/22945 "2020-03-10T21:29:10Z")

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Hello I receive data in mongo db and i want to display this data in nodered dashboard any help please? Thank you

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## [New thing: Flow Inspector](https://discourse.nodered.org/t/new-thing-flow-inspector/20573)

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**Author:** [@knolleary](https://discourse.nodered.org/u/knolleary)\
**Replies:** 23\
**Last updated:** [10 March 2020 20:12 UTC](https://discourse.nodered.org/t/new-thing-flow-inspector/20573 "2020-03-10T20:12:46Z")

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We are all familiar with the issue of a flow being shared in the forum without any information about what it contains. It isn't easy to stare at the JSON to figure these things out. In particular, the question over what …

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## [How do I simulate a hexadecimal input to be parsed to string](https://discourse.nodered.org/t/how-do-i-simulate-a-hexadecimal-input-to-be-parsed-to-string/3228)

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**Author:** [@quique123](https://discourse.nodered.org/u/quique123)\
**Replies:** 8\
**Last updated:** [10 March 2020 20:06 UTC](https://discourse.nodered.org/t/how-do-i-simulate-a-hexadecimal-input-to-be-parsed-to-string/3228 "2020-03-10T20:06:16Z")

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I am trying to simulate data from a ble device receiving hex data. I need to parse it and display the string. How do I simulate that in node-red? So far I have an inject node, function node and debug node, but what do…

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## [Filter for time](https://discourse.nodered.org/t/filter-for-time/22818)

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**Author:** [@Assi](https://discourse.nodered.org/u/Assi)\
**Replies:** 3\
**Last updated:** [10 March 2020 19:44 UTC](https://discourse.nodered.org/t/filter-for-time/22818 "2020-03-10T19:44:15Z")

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Hello, I want to filter messages lets say for 30 minutes. If it comes in before it will be filtered out, the first message that comes after a 30 minute pause shall pass and reset the time again. Is there a library eleme…

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## [Need help with a sub-flow and dates (sorry folks)](https://discourse.nodered.org/t/need-help-with-a-sub-flow-and-dates-sorry-folks/22740)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 45\
**Last updated:** [10 March 2020 19:16 UTC](https://discourse.nodered.org/t/need-help-with-a-sub-flow-and-dates-sorry-folks/22740 "2020-03-10T19:16:20Z")

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Ok, I have shared a "node" (Sub-flow) recently which has three outputs. msg.payload that is suitable for use as a file name. msg.payload that is suitable for use as a path. msg.time which is suitable for use as a file…

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## [Trouble installing: node-red-contrib-serial-modbus Node](https://discourse.nodered.org/t/trouble-installing-node-red-contrib-serial-modbus-node/22937)

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**Author:** [@ThomE](https://discourse.nodered.org/u/ThomE)\
**Replies:** 2\
**Last updated:** [10 March 2020 18:40 UTC](https://discourse.nodered.org/t/trouble-installing-node-red-contrib-serial-modbus-node/22937 "2020-03-10T18:40:12Z")

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Hello, newbee here with a question that's been confounding me for two days now. First I'm running Node-Red in a windows 10 environment. install went, for the most part OK except not really because although I can run nod…

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## [Node-red unable to reach localhost:1880](https://discourse.nodered.org/t/node-red-unable-to-reach-localhost-1880/22939)

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**Author:** [@bastvdn](https://discourse.nodered.org/u/bastvdn)\
**Replies:** 2\
**Last updated:** [10 March 2020 17:33 UTC](https://discourse.nodered.org/t/node-red-unable-to-reach-localhost-1880/22939 "2020-03-10T17:33:47Z")

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Hello everyone, i'm currently working on a robotic project using node-red and ros, it was perfectly working until yesterday, now i cant even connect to the localhost page even tho the log tells me the nodes are working…

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## [Node-red-node-ui-table finding output of the node](https://discourse.nodered.org/t/node-red-node-ui-table-finding-output-of-the-node/22928)

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**Author:** [@Bond](https://discourse.nodered.org/u/Bond)\
**Replies:** 2\
**Last updated:** [10 March 2020 15:38 UTC](https://discourse.nodered.org/t/node-red-node-ui-table-finding-output-of-the-node/22928 "2020-03-10T15:38:42Z")

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Hello everyone, I'm new to node-red. I have an imported example in which the ui-table node has both input and output to be connected to. But in my palette, I only see the ui-table node that only has the input. I'm very…

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## [Influxdb database information being stored?](https://discourse.nodered.org/t/influxdb-database-information-being-stored/22930)

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**Author:** [@fjungen](https://discourse.nodered.org/u/fjungen)\
**Replies:** 1\
**Last updated:** [10 March 2020 16:22 UTC](https://discourse.nodered.org/t/influxdb-database-information-being-stored/22930 "2020-03-10T16:22:18Z")

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Hi All, using Node-Red in a docker container and would like to copy my backups (flows, database access information like user and password) into a new build image. It's working for the flows but not for the database infor…

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## [How to manually install a node into the library Android](https://discourse.nodered.org/t/how-to-manually-install-a-node-into-the-library-android/22936)

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**Author:** [@bracketmounts](https://discourse.nodered.org/u/bracketmounts)\
**Replies:** 0\
**Last updated:** [10 March 2020 16:19 UTC](https://discourse.nodered.org/t/how-to-manually-install-a-node-into-the-library-android/22936 "2020-03-10T16:19:12Z")

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Hi, I am installing Node Red on an android phone running Android 9. I have all my nodes loaded except Sqlite. I have Sqlite.zip downloaded and it is located at sdcard/download. I am a real novice at anything \*ix and ha…

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## [I can't access flow editor](https://discourse.nodered.org/t/i-cant-access-flow-editor/22863)

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**Author:** [@nahuavrilero](https://discourse.nodered.org/u/nahuavrilero)\
**Replies:** 5\
**Last updated:** [10 March 2020 16:09 UTC](https://discourse.nodered.org/t/i-cant-access-flow-editor/22863 "2020-03-10T16:09:12Z")

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Hi, I've been using node red on a raspberry pi. It worked just fine till today. I'm able to access the dashboard, but I can't access the flow editor. Whenever I try to open it, node red restart itself. I'm guessing it'…

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## [Mqtt client and mqtt broker connection](https://discourse.nodered.org/t/mqtt-client-and-mqtt-broker-connection/22868)

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**Author:** [@saeed1](https://discourse.nodered.org/u/saeed1)\
**Replies:** 6\
**Last updated:** [10 March 2020 16:06 UTC](https://discourse.nodered.org/t/mqtt-client-and-mqtt-broker-connection/22868 "2020-03-10T16:06:21Z")

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Hi, Case 1: My mqtt Client (Arduino+ethernetshield) and broker (PC) are connected to same netwerk with my home router. mqtt attemps work fine. Case 2: In this case my mqtt Client and mqtt broker are connected to 2 d…

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## [File downloaded on Mac OS](https://discourse.nodered.org/t/file-downloaded-on-mac-os/22833)

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**Author:** [@taminhhienmor](https://discourse.nodered.org/u/taminhhienmor)\
**Replies:** 7\
**Last updated:** [9 March 2020 17:43 UTC](https://discourse.nodered.org/t/file-downloaded-on-mac-os/22833 "2020-03-09T17:43:17Z")

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Where can I find file downloaded from node "file" on MAC OS. Thanks you

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## [Multiple readings](https://discourse.nodered.org/t/multiple-readings/22703)

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**Author:** [@Beefy\_carrot](https://discourse.nodered.org/u/Beefy_carrot)\
**Replies:** 5\
**Last updated:** [10 March 2020 13:24 UTC](https://discourse.nodered.org/t/multiple-readings/22703 "2020-03-10T13:24:56Z")

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Hi! i am trying to take in readings from a sensor and then send that data over to cloud. this process is fine. But to limit the transactions i want to send 10 readings at a time. I dont completely understand how to do th…

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## [Help why NR isn't starting](https://discourse.nodered.org/t/help-why-nr-isnt-starting/22907)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 10\
**Last updated:** [10 March 2020 10:25 UTC](https://discourse.nodered.org/t/help-why-nr-isnt-starting/22907 "2020-03-10T10:25:30Z")

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Yeah, I'm pushing the friendship with things recently. I was going through updating NR on some machines. Alas one is being annoying - as usual. I'm getting this error when it starts: TypeError: Cannot read property '…

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## [Dashboard ui\_dropdown behaviour](https://discourse.nodered.org/t/dashboard-ui-dropdown-behaviour/22825)

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**Author:** [@Bobo](https://discourse.nodered.org/u/Bobo)\
**Replies:** 2\
**Last updated:** [10 March 2020 09:32 UTC](https://discourse.nodered.org/t/dashboard-ui-dropdown-behaviour/22825 "2020-03-10T09:32:33Z")

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The behaviour of the ui\_dropdown that I see when an item is selected (the onclick event) is that msg.topic is not sent. To clarify, it appears this ONLY occurs when msg.topic is passed in, not when set in the dropdown e…

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## [Best practice for installation of node-red and custom node](https://discourse.nodered.org/t/best-practice-for-installation-of-node-red-and-custom-node/22850)

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**Author:** [@Maurice](https://discourse.nodered.org/u/Maurice)\
**Replies:** 2\
**Last updated:** [9 March 2020 20:52 UTC](https://discourse.nodered.org/t/best-practice-for-installation-of-node-red-and-custom-node/22850 "2020-03-09T20:52:05Z")

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Hello guys, I'll need your help today because I'm new in node app and node red and I have two big questions about how to correctly structure and where installed stuff that's I can't solve alone... First : I've seen one…

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## [How to get node red logs as a text file](https://discourse.nodered.org/t/how-to-get-node-red-logs-as-a-text-file/22904)

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**Author:** [@DemonKing](https://discourse.nodered.org/u/DemonKing)\
**Replies:** 3\
**Last updated:** [10 March 2020 08:36 UTC](https://discourse.nodered.org/t/how-to-get-node-red-logs-as-a-text-file/22904 "2020-03-10T08:36:07Z")

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Hi all I can saw the logs in command promt but i want that logs as a file fo debugging please let me know how to do that thanks

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## [Problems setting up NR environment in Suse](https://discourse.nodered.org/t/problems-setting-up-nr-environment-in-suse/22860)

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**Author:** [@nygma2004](https://discourse.nodered.org/u/nygma2004)\
**Replies:** 3\
**Last updated:** [10 March 2020 07:49 UTC](https://discourse.nodered.org/t/problems-setting-up-nr-environment-in-suse/22860 "2020-03-10T07:49:23Z")

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Hi All, I have tried asking around in many places - most probably wrong places - and I am still not able to resolve my issue. I am trying to set up a NR environment in Suse Linux server. All my Linux experience is with…

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## [Problem to create a overlay effect](https://discourse.nodered.org/t/problem-to-create-a-overlay-effect/22694)

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**Author:** [@jan-k](https://discourse.nodered.org/u/jan-k)\
**Replies:** 0\
**Last updated:** [6 March 2020 09:32 UTC](https://discourse.nodered.org/t/problem-to-create-a-overlay-effect/22694 "2020-03-06T09:32:46Z")

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Greetings, I had tried to do for a overlay effect on my node red dashboard to show disconnection. The method I do is using a template node and paste javascript code. And my problem is the overlay effect will run off whe…

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## [Change light temperature over time](https://discourse.nodered.org/t/change-light-temperature-over-time/22843)

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**Author:** [@ZionTucker](https://discourse.nodered.org/u/ZionTucker)\
**Replies:** 2\
**Last updated:** [10 March 2020 07:02 UTC](https://discourse.nodered.org/t/change-light-temperature-over-time/22843 "2020-03-10T07:02:19Z")

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While I've built an impressive amount of flows for my smart home, now is the time I need some extra brains to help me :slight\_smile: What I want: Change the light temperature of my living room lights from the time they …

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## [Is it possible to use NR-Editor and NR-Runtime in different servers?](https://discourse.nodered.org/t/is-it-possible-to-use-nr-editor-and-nr-runtime-in-different-servers/22718)

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**Author:** [@SunnyLeo](https://discourse.nodered.org/u/SunnyLeo)\
**Replies:** 8\
**Last updated:** [10 March 2020 05:22 UTC](https://discourse.nodered.org/t/is-it-possible-to-use-nr-editor-and-nr-runtime-in-different-servers/22718 "2020-03-10T05:22:23Z")

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sorry,a newbie here with a newbie question i noticed the latest version NR has split editor and runtime,that's awsone! Could I only deploy NR-Runtime on a device such like Raspberry Pi and deploy NR-Editor on my local …

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## [TCP Request VLC issue](https://discourse.nodered.org/t/tcp-request-vlc-issue/22895)

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**Author:** [@lopikamper](https://discourse.nodered.org/u/lopikamper)\
**Replies:** 3\
**Last updated:** [9 March 2020 23:15 UTC](https://discourse.nodered.org/t/tcp-request-vlc-issue/22895 "2020-03-09T23:15:02Z")

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Hi, I am trying to control VLC over remote control TCP or lua TCP with TCP nodes in node-red. I have succesfully created a connection between node-red TCP Request (TCP out) nodes and the listener on VLC side. The probl…

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## [setTimeout function timesout not the given time](https://discourse.nodered.org/t/settimeout-function-timesout-not-the-given-time/22888)

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**Author:** [@gschmidt](https://discourse.nodered.org/u/gschmidt)\
**Replies:** 8\
**Last updated:** [9 March 2020 22:19 UTC](https://discourse.nodered.org/t/settimeout-function-timesout-not-the-given-time/22888 "2020-03-09T22:19:30Z")

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Hi, In a Function Node I use the "setTimeout" function twice The first timeout takes exactly 2 seconds (2000 ms) The last timeout takes exactly 5 seconds, however I have have set it at 7 seconds (7000 ms) When I set …

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## [Unicode to number](https://discourse.nodered.org/t/unicode-to-number/22758)

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**Author:** [@StianB](https://discourse.nodered.org/u/StianB)\
**Replies:** 6\
**Last updated:** [9 March 2020 21:00 UTC](https://discourse.nodered.org/t/unicode-to-number/22758 "2020-03-09T21:00:35Z")

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Hi, I am having some issues to convert what appears to be unicode into number. I am running a python script from a exec module where the msg.payload returns a value which seems to be unicode(?) Adding a change node r…

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## [How to test for undefined in function node](https://discourse.nodered.org/t/how-to-test-for-undefined-in-function-node/19200)

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**Author:** [@Sean-McG](https://discourse.nodered.org/u/Sean-McG)\
**Replies:** 11\
**Last updated:** [9 March 2020 20:52 UTC](https://discourse.nodered.org/t/how-to-test-for-undefined-in-function-node/19200 "2020-03-09T20:52:00Z")

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I have a number of messages which share the same topic but with various payload objects, which vary from message to message. The code bellow does what I need when the relevant object is present in the message var1 = {p…

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## [Feature Request: Group node](https://discourse.nodered.org/t/feature-request-group-node/22857)

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**Author:** [@Mannshoch](https://discourse.nodered.org/u/Mannshoch)\
**Replies:** 4\
**Last updated:** [9 March 2020 20:27 UTC](https://discourse.nodered.org/t/feature-request-group-node/22857 "2020-03-09T20:27:49Z")

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Add a node which allow to simply Group a set of nodes or link to Flows/Subflows It would help to get a better overview, See Mockup:

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## [Reverse DNS Look Up](https://discourse.nodered.org/t/reverse-dns-look-up/22807)

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**Author:** [@nodecentral](https://discourse.nodered.org/u/nodecentral)\
**Replies:** 4\
**Last updated:** [9 March 2020 18:55 UTC](https://discourse.nodered.org/t/reverse-dns-look-up/22807 "2020-03-09T18:55:18Z")

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Hi I’m trying to get the IP address of a domain name, so I can add the IP to my firewall but I can’t seem to get the dns node to work - node-red-contrib-dns (node) - Node-RED Is anyone using this successfully for rever…

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## [New to node-red-contrib-ramp-thermostat](https://discourse.nodered.org/t/new-to-node-red-contrib-ramp-thermostat/22801)

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**Author:** [@shel](https://discourse.nodered.org/u/shel)\
**Replies:** 21\
**Last updated:** [9 March 2020 18:23 UTC](https://discourse.nodered.org/t/new-to-node-red-contrib-ramp-thermostat/22801 "2020-03-09T18:23:43Z")

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Totally new to this with little programming but want to try to use this node to control a terrarium. Found several threads that say this node can be programmed via the dashboard but I am unable to find the right wording.…

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## [Application Security (Flow)](https://discourse.nodered.org/t/application-security-flow/22853)

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**Author:** [@mribeiro](https://discourse.nodered.org/u/mribeiro)\
**Replies:** 1\
**Last updated:** [9 March 2020 18:22 UTC](https://discourse.nodered.org/t/application-security-flow/22853 "2020-03-09T18:22:11Z")

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Hello everyone, Very good to work with Node-RED, I am happy to enter this IOT world, I am not sure if this has already been discussed here, forgive me! I created a simple application in Node-RED, but just as everything…

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