# Latest

**URL:** https://discourse.nodered.org/latest.md?page=1032

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

**Page:** 1033

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## [Change Node: Default or Else?](https://discourse.nodered.org/t/change-node-default-or-else/30696)

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**Author:** [@SteveMann](https://discourse.nodered.org/u/SteveMann)\
**Replies:** 5\
**Last updated:** [25 July 2020 22:06 UTC](https://discourse.nodered.org/t/change-node-default-or-else/30696 "2020-07-25T22:06:23Z")

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How would you do a default or else in a change node? I have a few values that if matched in the change node, get set to a text value. What I would like is for non-matching codes to default to "0". Any ideas, or should…

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## [Tellstick on buster](https://discourse.nodered.org/t/tellstick-on-buster/30507)

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**Author:** [@Hylsan79](https://discourse.nodered.org/u/Hylsan79)\
**Replies:** 16\
**Last updated:** [25 July 2020 21:51 UTC](https://discourse.nodered.org/t/tellstick-on-buster/30507 "2020-07-25T21:51:50Z")

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I know this is a longshot but thought I throw it out here and see if I could get som help. My Pi2 crashed (SD-card), so I thought it was time to upgrade to a Pi4 while at it. Installed my Tellstick and everything is wor…

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## [Inject nodes not firing on boot up of Raspberry Pi 4](https://discourse.nodered.org/t/inject-nodes-not-firing-on-boot-up-of-raspberry-pi-4/30675)

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**Author:** [@davej](https://discourse.nodered.org/u/davej)\
**Replies:** 21\
**Last updated:** [25 July 2020 21:40 UTC](https://discourse.nodered.org/t/inject-nodes-not-firing-on-boot-up-of-raspberry-pi-4/30675 "2020-07-25T21:40:17Z")

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I seem to be having a major brain issue with Inject nodes of all things. I have a simple inject node set to fire after 0.1 seconds . All it does it trigger an Exec node that simply issues a hostname -I in order to get t…

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## [\`slider\` question with the \`msg.enabled\` option](https://discourse.nodered.org/t/slider-question-with-the-msg-enabled-option/30689)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 2\
**Last updated:** [25 July 2020 21:15 UTC](https://discourse.nodered.org/t/slider-question-with-the-msg-enabled-option/30689 "2020-07-25T21:15:50Z")

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I want to make sure I am not going nuts. This keeps biting me and I think I now have the cause. I have a slider and it has a value of 6 as an example. I send the node a message: msg.enabled = false This stops the s…

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## [\[Minor Bug\]Debug gives error if msg.payload is null](https://discourse.nodered.org/t/minor-bug-debug-gives-error-if-msg-payload-is-null/30698)

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**Author:** [@cymplecy](https://discourse.nodered.org/u/cymplecy)\
**Replies:** 1\
**Last updated:** [25 July 2020 21:01 UTC](https://discourse.nodered.org/t/minor-bug-debug-gives-error-if-msg-payload-is-null/30698 "2020-07-25T21:01:30Z")

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If node status is enabled and msg.payload is null - you get this error showing in Debug - its fine with it unticked Now back to why I'm getting a null payload in one of my flows.....

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## [Using the change node](https://discourse.nodered.org/t/using-the-change-node/30128)

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**Author:** [@jgerardi](https://discourse.nodered.org/u/jgerardi)\
**Replies:** 12\
**Last updated:** [25 July 2020 21:00 UTC](https://discourse.nodered.org/t/using-the-change-node/30128 "2020-07-25T21:00:55Z")

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I am trying to extract one part of a mqtt message and use it as a payload in a node. The incoming payload is {time:"00:02"} and i would like to use just the 00:02 for my new payload. I tried the change node by setting …

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## [\[ANNOUNCE\] node-red-contrib-ui-contextmenu - typedinputs](https://discourse.nodered.org/t/announce-node-red-contrib-ui-contextmenu-typedinputs/29973)

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**Author:** [@BartButenaers](https://discourse.nodered.org/u/BartButenaers)\
**Replies:** 6\
**Last updated:** [25 July 2020 19:51 UTC](https://discourse.nodered.org/t/announce-node-red-contrib-ui-contextmenu-typedinputs/29973 "2020-07-25T19:51:41Z")

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Hi folks, In another discussion we had an agreement to send a msg.event property on some of the UI nodes. So I also implemented that change in version 2.0.0 of the SVG node, which is not on NPM yet (which will be relea…

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## [Button Press Next Color](https://discourse.nodered.org/t/button-press-next-color/30674)

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**Author:** [@Lethal83](https://discourse.nodered.org/u/Lethal83)\
**Replies:** 1\
**Last updated:** [25 July 2020 19:40 UTC](https://discourse.nodered.org/t/button-press-next-color/30674 "2020-07-25T19:40:59Z")

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Hi All New to Node Red but enjoying it as I'm starting to get my head around it. I have the 5 button Ikea Tradfi remote that the kids use in their room with a Tasmota flash RGBW globe. Im also using Home assistant. I …

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## [Dashboard, switch to start and stop python program](https://discourse.nodered.org/t/dashboard-switch-to-start-and-stop-python-program/30637)

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**Author:** [@KenjiRed](https://discourse.nodered.org/u/KenjiRed)\
**Replies:** 5\
**Last updated:** [25 July 2020 17:15 UTC](https://discourse.nodered.org/t/dashboard-switch-to-start-and-stop-python-program/30637 "2020-07-25T17:15:59Z")

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I want to make a switch which python program starts running on Raspberry Pi when it is ON and stops running when it is OFF. I took Dashboard-Switch, Function-Switch and 2 Exec nodes. At Dashboard-Switch I set Boolean T…

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## [Stuck setting up remote branch](https://discourse.nodered.org/t/stuck-setting-up-remote-branch/30686)

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**Author:** [@pjratl](https://discourse.nodered.org/u/pjratl)\
**Replies:** 1\
**Last updated:** [25 July 2020 16:11 UTC](https://discourse.nodered.org/t/stuck-setting-up-remote-branch/30686 "2020-07-25T16:11:05Z")

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I have some existing local flows I wish to place on github using the project capability. I "believe" I have set it up correctly but probably not :slight\_smile: here is where I am stuck I then click remote node and g…

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## [Quick note if you're a) reading multiple ds18b20's with a raspberry pi and b) struggling with flow stalls](https://discourse.nodered.org/t/quick-note-if-youre-a-reading-multiple-ds18b20s-with-a-raspberry-pi-and-b-struggling-with-flow-stalls/25747)

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**Author:** [@jcims](https://discourse.nodered.org/u/jcims)\
**Replies:** 21\
**Last updated:** [25 July 2020 16:09 UTC](https://discourse.nodered.org/t/quick-note-if-youre-a-reading-multiple-ds18b20s-with-a-raspberry-pi-and-b-struggling-with-flow-stalls/25747 "2020-07-25T16:09:30Z")

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I'd been using the node-red-contrib-ds18b20-sensor node to read 4 ds18b20's directly from gpio4 on my raspberry pi. Unfortunately this seemed to cause the flow to stall for 2-3 seconds while the pi was bit banging the 1…

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## [Tello drone control flow available?](https://discourse.nodered.org/t/tello-drone-control-flow-available/6753)

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**Author:** [@tcdjmek](https://discourse.nodered.org/u/tcdjmek)\
**Replies:** 2\
**Last updated:** [25 July 2020 15:30 UTC](https://discourse.nodered.org/t/tello-drone-control-flow-available/6753 "2020-07-25T15:30:22Z")

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Anyone know if there's a Node-Red flow to control tello drones? Ramping up on Node-Red now (total noob here). I see where there's flows for the parrot drones, don't have one of those. Thanks

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## [Background on BlueMix](https://discourse.nodered.org/t/background-on-bluemix/234)

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**Author:** [@mammoet](https://discourse.nodered.org/u/mammoet)\
**Replies:** 9\
**Last updated:** [25 July 2020 05:33 UTC](https://discourse.nodered.org/t/background-on-bluemix/234 "2020-07-25T05:33:08Z")

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Oke so i figuered out how i needed to create a background in my dashboard. now i was wondering how i can do the same on blue mix.

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## [PID for pump using node-red-contrib-pid](https://discourse.nodered.org/t/pid-for-pump-using-node-red-contrib-pid/30421)

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**Author:** [@torrent](https://discourse.nodered.org/u/torrent)\
**Replies:** 10\
**Last updated:** [25 July 2020 14:09 UTC](https://discourse.nodered.org/t/pid-for-pump-using-node-red-contrib-pid/30421 "2020-07-25T14:09:59Z")

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Hi everyone, I am a newbie with Node-Red and I am trying to make 2 pumps balance. The first pump can be controlled by slider in Node-Red. The second pump muss try to reach same pressure as first one. My idea is using PI…

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## [Read Variables OMRON NJ101 or NJ301](https://discourse.nodered.org/t/read-variables-omron-nj101-or-nj301/30600)

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**Author:** [@ARP](https://discourse.nodered.org/u/ARP)\
**Replies:** 3\
**Last updated:** [25 July 2020 11:29 UTC](https://discourse.nodered.org/t/read-variables-omron-nj101-or-nj301/30600 "2020-07-25T11:29:52Z")

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How can I read data from an NJ301 or NJ101 OMRON PLC from node-red? I am trying to use the "FINS Read" node of https://flows.nodered.org/node/node-red-contrib-omron-fins. In the GitHub description https://github.com/St…

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## [How to read file line by line](https://discourse.nodered.org/t/how-to-read-file-line-by-line/29931)

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**Author:** [@AnusudhanK7](https://discourse.nodered.org/u/AnusudhanK7)\
**Replies:** 21\
**Last updated:** [25 July 2020 10:17 UTC](https://discourse.nodered.org/t/how-to-read-file-line-by-line/29931 "2020-07-25T10:17:25Z")

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Hello, I am working on Datalogger using Node red programming tool. Project scenario: Process 1: Read Data from serial node -\> Store parameters in a csv formatted file. Process 2: Read data from Csv formatted file …

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## [Any "change node" for JSON object](https://discourse.nodered.org/t/any-change-node-for-json-object/30661)

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**Author:** [@AK51](https://discourse.nodered.org/u/AK51)\
**Replies:** 4\
**Last updated:** [25 July 2020 09:05 UTC](https://discourse.nodered.org/t/any-change-node-for-json-object/30661 "2020-07-25T09:05:50Z")

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Hi, I have tried to use "change node" to replace the comma (i.e. ',' to '|' for example) but it does not work with json object. If I change the json object to json string using "json node", the string creates many comma.…

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## [Having some troubles with dashboard notification node](https://discourse.nodered.org/t/having-some-troubles-with-dashboard-notification-node/30682)

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**Author:** [@BartButenaers](https://discourse.nodered.org/u/BartButenaers)\
**Replies:** 3\
**Last updated:** [25 July 2020 08:28 UTC](https://discourse.nodered.org/t/having-some-troubles-with-dashboard-notification-node/30682 "2020-07-25T08:28:19Z")

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Hi folks, Long time ago that I have been using the Dashboard Notification node, and now I'm having some troubles while using it: Had forgotten meanwhile that the notification title can be hardcoded on the config scr…

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## [Dashboard view on WEB](https://discourse.nodered.org/t/dashboard-view-on-web/30129)

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**Author:** [@nmwakde](https://discourse.nodered.org/u/nmwakde)\
**Replies:** 2\
**Last updated:** [25 July 2020 08:03 UTC](https://discourse.nodered.org/t/dashboard-view-on-web/30129 "2020-07-25T08:03:37Z")

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Hi! This side Nitin Wakde. I'm basically a PLC programmer. I'm able to read the PLC values in Node-red on my local computer ( http://127.0.0.1:1880/ui). but I want to see this dashboard out of my local network. pleas…

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## [OPC UA dynamical namespaces index](https://discourse.nodered.org/t/opc-ua-dynamical-namespaces-index/30613)

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**Author:** [@pfe](https://discourse.nodered.org/u/pfe)\
**Replies:** 2\
**Last updated:** [25 July 2020 07:54 UTC](https://discourse.nodered.org/t/opc-ua-dynamical-namespaces-index/30613 "2020-07-25T07:54:18Z")

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Hello Forum, I search a way to define the nodeid dynamically in a read flow for a OPC client . instead of ( fixed ns index) ns=10;s=Devices.CmdChangeRequest something like: global.get('namespace');s=s=Devices.CmdChan…

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## [Combining payload msg to google sheet](https://discourse.nodered.org/t/combining-payload-msg-to-google-sheet/30676)

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**Author:** [@mshaz](https://discourse.nodered.org/u/mshaz)\
**Replies:** 1\
**Last updated:** [25 July 2020 07:44 UTC](https://discourse.nodered.org/t/combining-payload-msg-to-google-sheet/30676 "2020-07-25T07:44:29Z")

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Hi I need help I want to combine the msg.payload to one row in google sheet. Currently it fills the rows alternately as in the image. Hope anyone can help. Thank you. Google form http url: https://docs.google.com/for…

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## [How to create a config node that contains credentials](https://discourse.nodered.org/t/how-to-create-a-config-node-that-contains-credentials/30664)

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**Author:** [@davehorton](https://discourse.nodered.org/u/davehorton)\
**Replies:** 5\
**Last updated:** [25 July 2020 07:11 UTC](https://discourse.nodered.org/t/how-to-create-a-config-node-that-contains-credentials/30664 "2020-07-25T07:11:31Z")

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I am creating a config node to be used in some of my other nodes. The information includes a url and an auth token which is not something I want exposed, so I designed the config node to store this information as creden…

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## [Raspberry pi sense hat - No topic dialog](https://discourse.nodered.org/t/raspberry-pi-sense-hat-no-topic-dialog/30524)

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**Author:** [@jfk](https://discourse.nodered.org/u/jfk)\
**Replies:** 15\
**Last updated:** [25 July 2020 02:53 UTC](https://discourse.nodered.org/t/raspberry-pi-sense-hat-no-topic-dialog/30524 "2020-07-25T02:53:42Z")

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Hi, The sense hat appeared to install ok, however in the property sheets there is no opportunity to edit the topic or the payload. Is this a common config issue or not? please pi@raspberrypi:~/.node-red/node\_modules p…

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## [How to start a dashboard with some group hiden](https://discourse.nodered.org/t/how-to-start-a-dashboard-with-some-group-hiden/30570)

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**Author:** [@douglassinji](https://discourse.nodered.org/u/douglassinji)\
**Replies:** 4\
**Last updated:** [24 July 2020 23:56 UTC](https://discourse.nodered.org/t/how-to-start-a-dashboard-with-some-group-hiden/30570 "2020-07-24T23:56:21Z")

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Hello, I'm new in here and as used of the node-red, I've been facing a problem trying to hide so groups of my dashboard when I first start my dashboard... I would like to see if anyone could help me. I'm dashboard is ho…

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## [Aviso de luz encendida - 'Light on' warning](https://discourse.nodered.org/t/aviso-de-luz-encendida-light-on-warning/30671)

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**Author:** [@Luckyluck7777](https://discourse.nodered.org/u/Luckyluck7777)\
**Replies:** 2\
**Last updated:** [24 July 2020 22:52 UTC](https://discourse.nodered.org/t/aviso-de-luz-encendida-light-on-warning/30671 "2020-07-24T22:52:08Z")

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Hola, soy nuevo por aquí... Quiero hacer un flow en que me avise de si me dejó una luz encendida más de 3min estando de día. Tengo un sensor que me dice si está de día o está de noche, binary\_sensor.luminosidad Y una …

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## [Message queue problem](https://discourse.nodered.org/t/message-queue-problem/30665)

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**Author:** [@lalo](https://discourse.nodered.org/u/lalo)\
**Replies:** 2\
**Last updated:** [24 July 2020 20:59 UTC](https://discourse.nodered.org/t/message-queue-problem/30665 "2020-07-24T20:59:52Z")

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Hi, I'm having issues with a payload so basically I have an rbe node and I have two statments in a function node. My statments are "OPEN" and "Close" so basically is for a valve with the MQTT out node to full open and fu…

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## [Node-RED on Openmediavault](https://discourse.nodered.org/t/node-red-on-openmediavault/30666)

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**Author:** [@stefan24](https://discourse.nodered.org/u/stefan24)\
**Replies:** 0\
**Last updated:** [24 July 2020 20:49 UTC](https://discourse.nodered.org/t/node-red-on-openmediavault/30666 "2020-07-24T20:49:59Z")

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I started with Node-RED 1.0.6 on a Raspi 3, but decided to try out other systems, too, and have managed to install it on a Openmediavault (OMV) NAS version 4.1.35-1 and also the new 5.5.4. www.openmediavault.org Since …

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## [Can't find ID shown in node-red-log](https://discourse.nodered.org/t/cant-find-id-shown-in-node-red-log/30660)

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**Author:** [@dudleyjosh](https://discourse.nodered.org/u/dudleyjosh)\
**Replies:** 5\
**Last updated:** [24 July 2020 20:41 UTC](https://discourse.nodered.org/t/cant-find-id-shown-in-node-red-log/30660 "2020-07-24T20:41:16Z")

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I'm looking at the node-red-log and I am getting the following info... "\[info\] \[range:a8e61fec.d9baa\] Not a number: NaN" But if I search for that id "a8e61fec.d9baa" it doesn't find anything? Any ideas?

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## [How to count all used nodes](https://discourse.nodered.org/t/how-to-count-all-used-nodes/30652)

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**Author:** [@stefan24](https://discourse.nodered.org/u/stefan24)\
**Replies:** 3\
**Last updated:** [24 July 2020 19:49 UTC](https://discourse.nodered.org/t/how-to-count-all-used-nodes/30652 "2020-07-24T19:49:23Z")

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Hi! How do I count the nodes, I'm using in my flows? A (xx) behind the flow name in the new information view and the sum of all nodes behind the "Flows" would be nice.

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## [Remove JSON array items whose CreatedDate is not within last 5 minutes](https://discourse.nodered.org/t/remove-json-array-items-whose-createddate-is-not-within-last-5-minutes/30657)

<div class="topic-metadata">

**Author:** [@Honer08](https://discourse.nodered.org/u/Honer08)\
**Replies:** 5\
**Last updated:** [24 July 2020 18:45 UTC](https://discourse.nodered.org/t/remove-json-array-items-whose-createddate-is-not-within-last-5-minutes/30657 "2020-07-24T18:45:26Z")

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I have a function ("get only the recent") to filter out JSON items from JSON array where CreatedDate was not created within the last 5 minutes. OR to put it in another perspective....... keep all JSON array items that …

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