# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=572

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

**Page:** 573

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## [Message counter help](https://discourse.nodered.org/t/message-counter-help/43934)

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**Author:** [@biros](https://discourse.nodered.org/u/biros)\
**Replies:** 7\
**Last updated:** [10 April 2021 13:13 UTC](https://discourse.nodered.org/t/message-counter-help/43934 "2021-04-10T13:13:00Z")

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Hello, I am catching the string "null" from a msg and i am incrementing a counter every time it shows up (normally there is a number), at least i'm trying to. But the output counts up until a random number, then it sta…

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## [Need a "general" advice for a way to go](https://discourse.nodered.org/t/need-a-general-advice-for-a-way-to-go/43935)

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**Author:** [@sfedo](https://discourse.nodered.org/u/sfedo)\
**Replies:** 2\
**Last updated:** [10 April 2021 11:38 UTC](https://discourse.nodered.org/t/need-a-general-advice-for-a-way-to-go/43935 "2021-04-10T11:38:06Z")

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Hello everyone, I'm asking this question here in the community, because people here know a lot about node-red, but also have a lot of experience with different hardware. I need advice on a way to achieve what I have pl…

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## [Latest dashboard (2.28.2) not installing - I think](https://discourse.nodered.org/t/latest-dashboard-2-28-2-not-installing-i-think/43806)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 31\
**Last updated:** [10 April 2021 11:17 UTC](https://discourse.nodered.org/t/latest-dashboard-2-28-2-not-installing-i-think/43806 "2021-04-10T11:17:29Z")

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I invoked the update but it seems to have not happened. I saw it wrote stuff to a log file. (It's big) But this is the last bit: 3724 warn node-red-contrib-ui-led@0.3.3 requires a peer of node-red-dashboard@2.23.x bu…

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## [Node-red-contrib-sonos-plus](https://discourse.nodered.org/t/node-red-contrib-sonos-plus/43010)

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**Author:** [@pvanklink](https://discourse.nodered.org/u/pvanklink)\
**Replies:** 7\
**Last updated:** [10 April 2021 09:52 UTC](https://discourse.nodered.org/t/node-red-contrib-sonos-plus/43010 "2021-04-10T09:52:41Z")

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With one of the latest updates, my sonos flow does not work anymore... When an eveent occurred, my sonos flow must play a file on my nas... it worked some weeks ago, and now i dont hear the file playing and i have an e…

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## [Loading ncd-red-wireless on Windows](https://discourse.nodered.org/t/loading-ncd-red-wireless-on-windows/43896)

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**Author:** [@ozchemist](https://discourse.nodered.org/u/ozchemist)\
**Replies:** 5\
**Last updated:** [10 April 2021 03:26 UTC](https://discourse.nodered.org/t/loading-ncd-red-wireless-on-windows/43896 "2021-04-10T03:26:55Z")

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Hi - I'm new to node-red I'm new to the ncd.io hardware environment I have NO idea about install loaders or what makes them fail. I'm trying to install the ncd-red-wireless module (V1.5.31) and the load is failing. E…

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## [How to create an array with flow variables](https://discourse.nodered.org/t/how-to-create-an-array-with-flow-variables/43941)

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**Author:** [@BrokenBeat](https://discourse.nodered.org/u/BrokenBeat)\
**Replies:** 3\
**Last updated:** [9 April 2021 23:13 UTC](https://discourse.nodered.org/t/how-to-create-an-array-with-flow-variables/43941 "2021-04-09T23:13:40Z")

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I am developing a function node where I perform operations with flow variables, as you can see in the image, each operation performed depends on a flow variable saved a couple of lines before. The first problem is that …

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## [Dockerfile with 'projects' deployment](https://discourse.nodered.org/t/dockerfile-with-projects-deployment/43938)

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**Author:** [@supercross99](https://discourse.nodered.org/u/supercross99)\
**Replies:** 0\
**Last updated:** [9 April 2021 20:19 UTC](https://discourse.nodered.org/t/dockerfile-with-projects-deployment/43938 "2021-04-09T20:19:45Z")

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I'm trying to build a custom NR docker image that does a few things: Begins with nodered/node-red base image Clones a git repo that has my flows and packages (preferrably to /data/projects/myproject) Installs packages …

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## [Write and Read an editable table](https://discourse.nodered.org/t/write-and-read-an-editable-table/43524)

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**Author:** [@Simone](https://discourse.nodered.org/u/Simone)\
**Replies:** 10\
**Last updated:** [9 April 2021 18:11 UTC](https://discourse.nodered.org/t/write-and-read-an-editable-table/43524 "2021-04-09T18:11:39Z")

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Hi Guys, I'm looking for a node with an editable table that can be write, like the node-red-contrib-ui-etable but with the option to get data from the table. What I need to do is to compile a table and save data (i.e. …

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## [Make a backup BEFORE upgrading](https://discourse.nodered.org/t/make-a-backup-before-upgrading/43875)

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**Author:** [@cymplecy](https://discourse.nodered.org/u/cymplecy)\
**Replies:** 15\
**Last updated:** [9 April 2021 17:18 UTC](https://discourse.nodered.org/t/make-a-backup-before-upgrading/43875 "2021-04-09T17:18:50Z")

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Note to self: I MUST remember to make a full backup of the SD card BEFORE attempting to upgrade a 4 year old Jessie NR install Or in fact DON'T DO IT!!!! :frowning:

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## [Error detecting Watson IoT](https://discourse.nodered.org/t/error-detecting-watson-iot/43932)

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**Author:** [@BrianMcDonagh](https://discourse.nodered.org/u/BrianMcDonagh)\
**Replies:** 0\
**Last updated:** [9 April 2021 16:30 UTC](https://discourse.nodered.org/t/error-detecting-watson-iot/43932 "2021-04-09T16:30:32Z")

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Hi, I am attempting to connect a device which I have linked to IBM Watson IoT to Cloudant through Node Red. The issue I am having is that although Watson IoT shows that the device is connected, Node Red does not.. I kno…

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## [Stream analytics](https://discourse.nodered.org/t/stream-analytics/43721)

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**Author:** [@Alex95](https://discourse.nodered.org/u/Alex95)\
**Replies:** 39\
**Last updated:** [9 April 2021 15:46 UTC](https://discourse.nodered.org/t/stream-analytics/43721 "2021-04-09T15:46:10Z")

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Hello everyone. I have the following problem: i want to send data (temperature,humidity and water level) in Stream Analytics of Azure IoT Hub and after Stream analytics, in power bi. Everytime i send it, the stream anal…

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## [Comment modifier la priorité d'exécution du plusieurs node "execute"](https://discourse.nodered.org/t/comment-modifier-la-priorite-dexecution-du-plusieurs-node-execute/43929)

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**Author:** [@aymen](https://discourse.nodered.org/u/aymen)\
**Replies:** 0\
**Last updated:** [9 April 2021 15:42 UTC](https://discourse.nodered.org/t/comment-modifier-la-priorite-dexecution-du-plusieurs-node-execute/43929 "2021-04-09T15:42:27Z")

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Bonjour à tous, Je voudrais exécuter plusieurs fichiers mp3 en utilisant le node "inject" comme entrée et plusieurs nodes "execute" en sortie . Comment modifier la priorité d'exécution de chaque commande d'exécution ? …

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## [How is the best environnement](https://discourse.nodered.org/t/how-is-the-best-environnement/43927)

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**Author:** [@hassengh](https://discourse.nodered.org/u/hassengh)\
**Replies:** 3\
**Last updated:** [9 April 2021 15:16 UTC](https://discourse.nodered.org/t/how-is-the-best-environnement/43927 "2021-04-09T15:16:26Z")

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hi all , what is the best environment to deploy a node Red professional project: PC (windows 10) or Raspberry ?

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## [Mail-Node Attachement unreadable](https://discourse.nodered.org/t/mail-node-attachement-unreadable/43873)

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**Author:** [@jsail](https://discourse.nodered.org/u/jsail)\
**Replies:** 4\
**Last updated:** [9 April 2021 14:17 UTC](https://discourse.nodered.org/t/mail-node-attachement-unreadable/43873 "2021-04-09T14:17:56Z")

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I am stock with the node attachements. first I used the file-node to "/home/pi/helloWorld.txt" and send it to the mail-node. The Mail arrives and the attachement is ok. When I send "/home/pi/helloWorld.zip" attached, t…

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## [Speedtest that isn't useless?](https://discourse.nodered.org/t/speedtest-that-isnt-useless/43884)

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**Author:** [@jcarreira](https://discourse.nodered.org/u/jcarreira)\
**Replies:** 5\
**Last updated:** [9 April 2021 13:00 UTC](https://discourse.nodered.org/t/speedtest-that-isnt-useless/43884 "2021-04-09T13:00:57Z")

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So I've been looking at the speedtest nodes available and they're... not good. If I go to Speedtest.net I'll get something around the 400MBps I'm supposed to, but the speedtest nodes here will give me like 20MBps. That d…

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## [Ui\_table doesn't display new data](https://discourse.nodered.org/t/ui-table-doesnt-display-new-data/43919)

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**Author:** [@multixz](https://discourse.nodered.org/u/multixz)\
**Replies:** 0\
**Last updated:** [9 April 2021 12:06 UTC](https://discourse.nodered.org/t/ui-table-doesnt-display-new-data/43919 "2021-04-09T12:06:52Z")

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Hello Forum I have a project and for that I need to transfer one flow into a subflow. The problem is that the Subflow doesn't behave like the flow. I just transfered it into a subflow and changed the global variable nam…

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## [Help with Nodes Pi Keyboard and contrib sonos plus](https://discourse.nodered.org/t/help-with-nodes-pi-keyboard-and-contrib-sonos-plus/43916)

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**Author:** [@ttavlis](https://discourse.nodered.org/u/ttavlis)\
**Replies:** 0\
**Last updated:** [9 April 2021 11:45 UTC](https://discourse.nodered.org/t/help-with-nodes-pi-keyboard-and-contrib-sonos-plus/43916 "2021-04-09T11:45:15Z")

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Hallo all, I have a usb rfid reader and as soon as I read a rfid Tag it is setup to play a music in sonos. The pi keyboard node reads the tag and via a switch linked to the Sonos node it plays the song. I wanted to do…

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## [Advice on using SNMP](https://discourse.nodered.org/t/advice-on-using-snmp/43862)

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**Author:** [@Colin](https://discourse.nodered.org/u/Colin)\
**Replies:** 6\
**Last updated:** [9 April 2021 11:44 UTC](https://discourse.nodered.org/t/advice-on-using-snmp/43862 "2021-04-09T11:44:46Z")

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A bit off topic, but I would be using node-red for collecting the data so maybe not too far off. I have about a dozen assorted devices that I would like to monitor various aspects of and am wondering whether using SNMP…

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## [Ui\_table custom validator](https://discourse.nodered.org/t/ui-table-custom-validator/43342)

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**Author:** [@multixz](https://discourse.nodered.org/u/multixz)\
**Replies:** 1\
**Last updated:** [9 April 2021 11:37 UTC](https://discourse.nodered.org/t/ui-table-custom-validator/43342 "2021-04-09T11:37:10Z")

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Hello Forum I want to add a custom validator to my ui\_table. (Tabulator) The validator should only allow numbers smaller than the next number. I wrote this function for that: function(cell){ if (parseInt(cell.getRo…

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## [UTC vs Local time - Inject Node 'at a specific time'](https://discourse.nodered.org/t/utc-vs-local-time-inject-node-at-a-specific-time/43903)

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**Author:** [@MarkC](https://discourse.nodered.org/u/MarkC)\
**Replies:** 8\
**Last updated:** [9 April 2021 11:03 UTC](https://discourse.nodered.org/t/utc-vs-local-time-inject-node-at-a-specific-time/43903 "2021-04-09T11:03:57Z")

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Hello, I have been through a number of old topics, but the 'correct' time behavior is not totally clear to me. I am using NodeRED embedded into a device, and am having some difficulties with my logic since NodeRED seem…

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## [Store Temporary Data](https://discourse.nodered.org/t/store-temporary-data/12890)

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**Author:** [@jason\_tien](https://discourse.nodered.org/u/jason_tien)\
**Replies:** 16\
**Last updated:** [9 April 2021 10:36 UTC](https://discourse.nodered.org/t/store-temporary-data/12890 "2021-04-09T10:36:35Z")

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Hi everyone, It is posible I dont want using any database to store the data? Now I tried to use the getter and setter to store the temporary data. I dont know why the node red cannot get the previous data. If current mi…

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## [Connecting OpenPLC to Node RED](https://discourse.nodered.org/t/connecting-openplc-to-node-red/43899)

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**Author:** [@zeldakun](https://discourse.nodered.org/u/zeldakun)\
**Replies:** 3\
**Last updated:** [9 April 2021 10:11 UTC](https://discourse.nodered.org/t/connecting-openplc-to-node-red/43899 "2021-04-09T10:11:06Z")

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Hello Guys, Im trying to connecting my OpenPLC on Raspi with Nodered. so i decided to install OpenPLC pallete on Node-red. I always aget this error when i try to install openplc for node-red (node-red-contrib-openplc) f…

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## [Starter Kit on the IBMCLOUD](https://discourse.nodered.org/t/starter-kit-on-the-ibmcloud/43609)

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**Author:** [@Andrew4891](https://discourse.nodered.org/u/Andrew4891)\
**Replies:** 2\
**Last updated:** [9 April 2021 09:33 UTC](https://discourse.nodered.org/t/starter-kit-on-the-ibmcloud/43609 "2021-04-09T09:33:10Z")

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Hi to everybody, I am trying to import in the IBM Cloud the starter kit for the Node Red. I tried many way around, but seems it is impossible to correctly create the Deployment tool and the Toolchain. So basically, wh…

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## [Need help with sorting a string for dates](https://discourse.nodered.org/t/need-help-with-sorting-a-string-for-dates/43902)

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**Author:** [@monsivar](https://discourse.nodered.org/u/monsivar)\
**Replies:** 7\
**Last updated:** [9 April 2021 09:24 UTC](https://discourse.nodered.org/t/need-help-with-sorting-a-string-for-dates/43902 "2021-04-09T09:24:38Z")

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Hi I'm trying to sort an string of dates and then split the string and send the first date as payload. The business case is that i got a json file from my renovation company that contains pickup dates for my different …

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## [Raspberry and PLC S7](https://discourse.nodered.org/t/raspberry-and-plc-s7/43815)

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**Author:** [@achref46](https://discourse.nodered.org/u/achref46)\
**Replies:** 1\
**Last updated:** [9 April 2021 08:04 UTC](https://discourse.nodered.org/t/raspberry-and-plc-s7/43815 "2021-04-09T08:04:03Z")

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i want to connect my raspberry in virtuel machine with PLC S7 1500 in tia portal ? Any solution ??

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## [unique.Time() in Node red](https://discourse.nodered.org/t/unique-time-in-node-red/43878)

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**Author:** [@vkuehn](https://discourse.nodered.org/u/vkuehn)\
**Replies:** 3\
**Last updated:** [9 April 2021 07:00 UTC](https://discourse.nodered.org/t/unique-time-in-node-red/43878 "2021-04-09T07:00:41Z")

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unique.Time() did not work in a function node so I tried let time = new Date().getTime().toLocaleString(); time = time.replaceAll(",",""); to do something similar but replaceAll is also complained. what would be the…

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## [Listener for sensor value change and save it in BD](https://discourse.nodered.org/t/listener-for-sensor-value-change-and-save-it-in-bd/43890)

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**Author:** [@vpnob](https://discourse.nodered.org/u/vpnob)\
**Replies:** 7\
**Last updated:** [9 April 2021 00:03 UTC](https://discourse.nodered.org/t/listener-for-sensor-value-change-and-save-it-in-bd/43890 "2021-04-09T00:03:55Z")

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Hello, i will have a utility meter to monitor my power consumption but i want to save it in a tablet. There is any way to detect any change of value and save it on my tablet? Thanks

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## [Populate text area or something similar](https://discourse.nodered.org/t/populate-text-area-or-something-similar/43844)

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**Author:** [@jake123](https://discourse.nodered.org/u/jake123)\
**Replies:** 4\
**Last updated:** [8 April 2021 22:06 UTC](https://discourse.nodered.org/t/populate-text-area-or-something-similar/43844 "2021-04-08T22:06:14Z")

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I made a custom node that gets some data and populates the select tag with it. For now i have 8 options. Later on i will have like 50 of them and i want to keep track of which 1 i have selected. Any idea how would i do t…

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## [Monitoring of change of value](https://discourse.nodered.org/t/monitoring-of-change-of-value/43851)

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**Author:** [@GTiglio](https://discourse.nodered.org/u/GTiglio)\
**Replies:** 4\
**Last updated:** [8 April 2021 19:53 UTC](https://discourse.nodered.org/t/monitoring-of-change-of-value/43851 "2021-04-08T19:53:34Z")

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Hi all, I have power-values available in Nodered, that I store in a database. I want to use this power-values to monitor a special event: if everything works fine, the value changes each 5 min or so for a certain amount…

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## [How to apply "Switch case"](https://discourse.nodered.org/t/how-to-apply-switch-case/43839)

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**Author:** [@BrokenBeat](https://discourse.nodered.org/u/BrokenBeat)\
**Replies:** 7\
**Last updated:** [8 April 2021 19:06 UTC](https://discourse.nodered.org/t/how-to-apply-switch-case/43839 "2021-04-08T19:06:54Z")

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The flow that I am developing begins by receiving test data (measurements) in a function node to save them in different flow variables, it is later when I have the problem. I use a function node to process the variables…

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