# Latest

**URL:** https://discourse.nodered.org/latest.md?page=843

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

**Page:** 844

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## [Variable value as part of name of the another variable](https://discourse.nodered.org/t/variable-value-as-part-of-name-of-the-another-variable/43793)

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**Author:** [@petrasl](https://discourse.nodered.org/u/petrasl)\
**Replies:** 4\
**Last updated:** [7 April 2021 15:47 UTC](https://discourse.nodered.org/t/variable-value-as-part-of-name-of-the-another-variable/43793 "2021-04-07T15:47:22Z")

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Hi, plese help a newbie which can't even formulate its questions properly :slight\_smile: I have two of them: Lets say i have a switch, which after action sends what was done like a confirmation that task was done: http…

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## [Problems to "read out" mqtt Payload from DHT11](https://discourse.nodered.org/t/problems-to-read-out-mqtt-payload-from-dht11/43807)

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**Author:** [@Bolle01](https://discourse.nodered.org/u/Bolle01)\
**Replies:** 5\
**Last updated:** [7 April 2021 14:28 UTC](https://discourse.nodered.org/t/problems-to-read-out-mqtt-payload-from-dht11/43807 "2021-04-07T14:28:37Z")

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Hi, i am new here and i can´t find my fault in a Function node. I want to read out the Temperature and Huminity from a Tasmota DHT11 Client. So i use the Function node to extract the Temperature and Huminity, but it will…

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## [Monitoring bot email](https://discourse.nodered.org/t/monitoring-bot-email/43812)

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**Author:** [@Biff\_The\_Banana](https://discourse.nodered.org/u/Biff_The_Banana)\
**Replies:** 2\
**Last updated:** [7 April 2021 13:28 UTC](https://discourse.nodered.org/t/monitoring-bot-email/43812 "2021-04-07T13:28:15Z")

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Hi there, I'm trying to run a small flow that monitors site uptime and sends emails if said site goes down. I'm trying to test right now but when I try to trigger the email out node it returns the following error: Erro…

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## [Node-red-contrib-cip-ethernet-ip Refresh only on change?](https://discourse.nodered.org/t/node-red-contrib-cip-ethernet-ip-refresh-only-on-change/43801)

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**Author:** [@GlobalAutomation](https://discourse.nodered.org/u/GlobalAutomation)\
**Replies:** 3\
**Last updated:** [7 April 2021 12:57 UTC](https://discourse.nodered.org/t/node-red-contrib-cip-ethernet-ip-refresh-only-on-change/43801 "2021-04-07T12:57:10Z")

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Hello, trying to use node-red-contrib-cip-ethernet-ip. Can read the tags OK but they don't refresh if there is no change?. Is this the only way this node can run? I would like to read the tags every 15 minutes whether th…

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## [Filter Options Node](https://discourse.nodered.org/t/filter-options-node/43803)

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**Author:** [@jake123](https://discourse.nodered.org/u/jake123)\
**Replies:** 3\
**Last updated:** [7 April 2021 12:31 UTC](https://discourse.nodered.org/t/filter-options-node/43803 "2021-04-07T12:31:53Z")

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Any idea why this code doesnt work? Until the commented part everything works. I get all the data from the api but cant filter it. fetch(url) .then((res) =\> res.json()) .then((data) =\> { …

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## [Read ECONNRESET at TCP.onStreamRead](https://discourse.nodered.org/t/read-econnreset-at-tcp-onstreamread/43746)

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**Author:** [@angrj](https://discourse.nodered.org/u/angrj)\
**Replies:** 4\
**Last updated:** [7 April 2021 11:49 UTC](https://discourse.nodered.org/t/read-econnreset-at-tcp-onstreamread/43746 "2021-04-07T11:49:52Z")

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Hello to all, I have a problem with Node-RED: continuously communicates with PLCs using node-red-contrib-s7, it worked well for a long time, once migrated Node.JS and Node-RED (without changes to the flows) from a mach…

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## [Custom socket node](https://discourse.nodered.org/t/custom-socket-node/43553)

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**Author:** [@jake123](https://discourse.nodered.org/u/jake123)\
**Replies:** 20\
**Last updated:** [7 April 2021 10:43 UTC](https://discourse.nodered.org/t/custom-socket-node/43553 "2021-04-07T10:43:00Z")

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How do I create code to listen to websocket server. For example: ws://example.com/webEvent I dont know how to create web socket or even how to listen to it . Any help would be much appriciated

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## [Filter sensor data](https://discourse.nodered.org/t/filter-sensor-data/43775)

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**Author:** [@biros](https://discourse.nodered.org/u/biros)\
**Replies:** 8\
**Last updated:** [7 April 2021 10:05 UTC](https://discourse.nodered.org/t/filter-sensor-data/43775 "2021-04-07T10:05:06Z")

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Hello, I have a sonoff th10 temperature and relay board flashed with tasmota (9.3.1). The one with the SI7021 sensor. I guess it's a firmware thing and or hardware problem, the measurements (on the tasmota web interface…

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## [A problem with redis nodes](https://discourse.nodered.org/t/a-problem-with-redis-nodes/43802)

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**Author:** [@vtgav](https://discourse.nodered.org/u/vtgav)\
**Replies:** 1\
**Last updated:** [7 April 2021 09:30 UTC](https://discourse.nodered.org/t/a-problem-with-redis-nodes/43802 "2021-04-07T09:30:17Z")

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Greetings, I've successfully used redis from node-red in the past, and have just started a new piece of work which again needs redis, I'm using nodes from node-red-contrib-redis 1.3.7 but I'm having a struggle getting st…

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## [Custom Dropdown Node](https://discourse.nodered.org/t/custom-dropdown-node/43800)

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**Author:** [@jake123](https://discourse.nodered.org/u/jake123)\
**Replies:** 2\
**Last updated:** [7 April 2021 09:28 UTC](https://discourse.nodered.org/t/custom-dropdown-node/43800 "2021-04-07T09:28:45Z")

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I created a custom dropdown node that gets the data from some API and stores it in the dropdown menu. If i select some of the option it all works fine.But then when i open the node the second time i dont know what i se…

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## [MQTT problems with mobile phone](https://discourse.nodered.org/t/mqtt-problems-with-mobile-phone/43728)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 15\
**Last updated:** [7 April 2021 09:25 UTC](https://discourse.nodered.org/t/mqtt-problems-with-mobile-phone/43728 "2021-04-07T09:25:12Z")

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I know I've asked before but this is the next step/stage. I use TASKER for my phone and apps. I've installed the MQTT part for it and things seem to work. But not always. The story: At certain battery levels the ph…

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## [Is there a better way to do this?](https://discourse.nodered.org/t/is-there-a-better-way-to-do-this/43785)

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**Author:** [@jcarreira](https://discourse.nodered.org/u/jcarreira)\
**Replies:** 2\
**Last updated:** [7 April 2021 06:54 UTC](https://discourse.nodered.org/t/is-there-a-better-way-to-do-this/43785 "2021-04-07T06:54:50Z")

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Maybe "better" isn't the right word... More native to NR, maybe? I'm trying to avoid dropping to code for everything, but this works... \[{"id":"449c809d.fec43","type":"hubitat hsm","z":"534682e6.98503c","name":"","serve…

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## [ts.startsWith is not a function](https://discourse.nodered.org/t/ts-startswith-is-not-a-function/43750)

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**Author:** [@Mark-Muc](https://discourse.nodered.org/u/Mark-Muc)\
**Replies:** 12\
**Last updated:** [7 April 2021 05:54 UTC](https://discourse.nodered.org/t/ts-startswith-is-not-a-function/43750 "2021-04-07T05:54:11Z")

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Hello to all!! I yesterday updated MQTT to Version 2.0.10 ,, so far averything was working fine. To day i updated all packages in Node-RED marked with update / newer version. After a reboot, Node-RED won't start anymo…

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## [Posted flow updates from github not working](https://discourse.nodered.org/t/posted-flow-updates-from-github-not-working/43735)

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**Author:** [@vlturner](https://discourse.nodered.org/u/vlturner)\
**Replies:** 2\
**Last updated:** [6 April 2021 21:29 UTC](https://discourse.nodered.org/t/posted-flow-updates-from-github-not-working/43735 "2021-04-06T21:29:30Z")

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I have updated my flow and edited the text and flow itself, but the update from githib fails to update or show the new update date. https://flows.nodered.org/flow/9ba46c350c8999eaf137b65055a7e784

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## [Updating mysql values](https://discourse.nodered.org/t/updating-mysql-values/43778)

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**Author:** [@Newbie01](https://discourse.nodered.org/u/Newbie01)\
**Replies:** 3\
**Last updated:** [6 April 2021 19:37 UTC](https://discourse.nodered.org/t/updating-mysql-values/43778 "2021-04-06T19:37:32Z")

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This works but should be a better way. Kinda new to node red but I have tried a Function node, a change node, and a Template node. Probably wrong but couldn't get any of them to work. Any help is greatly appreciated. \[{…

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## [Nodes disappear when importing subflows](https://discourse.nodered.org/t/nodes-disappear-when-importing-subflows/40737)

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**Author:** [@r0ller](https://discourse.nodered.org/u/r0ller)\
**Replies:** 10\
**Last updated:** [6 April 2021 16:09 UTC](https://discourse.nodered.org/t/nodes-disappear-when-importing-subflows/40737 "2021-04-06T16:09:15Z")

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Hi All, I'm using nodered 1.2.9 and imported quite a big flow (tab) which is a reengineered variant of an already existing flow (tab) so they have pretty much in common. After the import -no matter if I choose to replac…

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## [Closing file after use of node-red : file](https://discourse.nodered.org/t/closing-file-after-use-of-node-red-file/43763)

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**Author:** [@Dirk\_L](https://discourse.nodered.org/u/Dirk_L)\
**Replies:** 9\
**Last updated:** [6 April 2021 14:26 UTC](https://discourse.nodered.org/t/closing-file-after-use-of-node-red-file/43763 "2021-04-06T14:26:41Z")

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Hi @all out there! I am nearly new on red-node. Or it seems to me as if... I am using node-red : file to write data in a file. Fine and it works. But (There will allways be a but..). The file seems not to be updated …

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## [Converting UNIX format to normal human format](https://discourse.nodered.org/t/converting-unix-format-to-normal-human-format/43510)

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**Author:** [@Nikolay](https://discourse.nodered.org/u/Nikolay)\
**Replies:** 2\
**Last updated:** [6 April 2021 14:14 UTC](https://discourse.nodered.org/t/converting-unix-format-to-normal-human-format/43510 "2021-04-06T14:14:55Z")

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Hello to All, I dad issues when trying to display information from sqlite to a ui template as a table and one of the columns needed to be a readable timestamp. Because I saved the date with a timestamp inject or Date.no…

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## [Node-red Serial not showing data, but can see in putty or moserial](https://discourse.nodered.org/t/node-red-serial-not-showing-data-but-can-see-in-putty-or-moserial/43760)

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**Author:** [@vikingsraven](https://discourse.nodered.org/u/vikingsraven)\
**Replies:** 2\
**Last updated:** [6 April 2021 13:41 UTC](https://discourse.nodered.org/t/node-red-serial-not-showing-data-but-can-see-in-putty-or-moserial/43760 "2021-04-06T13:41:41Z")

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HI all, found an interesting issue (possibly), my friend purchased some Atlas Scientific modules and i was setting up a datalogger for him, but i couldnt get any data from the units over serial, this was remote so had p…

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## [Graphs showing no lines, only dots](https://discourse.nodered.org/t/graphs-showing-no-lines-only-dots/43300)

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**Author:** [@robinfripon123](https://discourse.nodered.org/u/robinfripon123)\
**Replies:** 4\
**Last updated:** [6 April 2021 13:10 UTC](https://discourse.nodered.org/t/graphs-showing-no-lines-only-dots/43300 "2021-04-06T13:10:44Z")

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I have 2 identical graphs (copy paste). I want to get 2 times line charts. One of them are only showing dots. The configuration is same. Any ideas?

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## [QR Code URI Image in ui table](https://discourse.nodered.org/t/qr-code-uri-image-in-ui-table/42541)

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**Author:** [@Chorum](https://discourse.nodered.org/u/Chorum)\
**Replies:** 5\
**Last updated:** [6 April 2021 11:11 UTC](https://discourse.nodered.org/t/qr-code-uri-image-in-ui-table/42541 "2021-04-06T11:11:00Z")

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Hello, I would like to convert a qr-code number (for instance 001001) to a URI Image and show that in a ui table. I would like to do that in "vanilla" javascript or with help from nodes. i can create a qr code with th…

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## [List node, get checkbox state](https://discourse.nodered.org/t/list-node-get-checkbox-state/42933)

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**Author:** [@bodagrave](https://discourse.nodered.org/u/bodagrave)\
**Replies:** 4\
**Last updated:** [6 April 2021 11:28 UTC](https://discourse.nodered.org/t/list-node-get-checkbox-state/42933 "2021-04-06T11:28:50Z")

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Hi all! I'm using node-red-node-ui-list for a groceries list. I'm working on a solution to delete an entry as soon as it is checked, or alternatively delete the checked entries as soon as I click on a button. Can anyon…

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## [Use of fs as a global module (best practice )](https://discourse.nodered.org/t/use-of-fs-as-a-global-module-best-practice/43663)

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**Author:** [@chrisn-au](https://discourse.nodered.org/u/chrisn-au)\
**Replies:** 6\
**Last updated:** [6 April 2021 11:24 UTC](https://discourse.nodered.org/t/use-of-fs-as-a-global-module-best-practice/43663 "2021-04-06T11:24:48Z")

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I am after some advice on best/appropriate practice. I am using the fantastic node-red-contrib-google-oauth2 node to connect to the google APIs to upload files to google drive. The v3 of the drive API requires that a Re…

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## [Fetch image and send to email](https://discourse.nodered.org/t/fetch-image-and-send-to-email/43738)

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**Author:** [@jcarreira](https://discourse.nodered.org/u/jcarreira)\
**Replies:** 7\
**Last updated:** [6 April 2021 11:11 UTC](https://discourse.nodered.org/t/fetch-image-and-send-to-email/43738 "2021-04-06T11:11:54Z")

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I'm trying to fetch a camera shot via the Fully Kiosk Browser REST API and send it via email. I can get it to send the email, but the attachment doesn't come through as a valid image. If I call the endpoint directly from…

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## [Cancel inputs for a period of time](https://discourse.nodered.org/t/cancel-inputs-for-a-period-of-time/43749)

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**Author:** [@luis](https://discourse.nodered.org/u/luis)\
**Replies:** 7\
**Last updated:** [6 April 2021 10:45 UTC](https://discourse.nodered.org/t/cancel-inputs-for-a-period-of-time/43749 "2021-04-06T10:45:50Z")

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Is there a way I can cancel inputs from other nods using a button until I press it again?

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## [How to get node id from syslog on crash](https://discourse.nodered.org/t/how-to-get-node-id-from-syslog-on-crash/43754)

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**Author:** [@r0ller](https://discourse.nodered.org/u/r0ller)\
**Replies:** 2\
**Last updated:** [6 April 2021 09:39 UTC](https://discourse.nodered.org/t/how-to-get-node-id-from-syslog-on-crash/43754 "2021-04-06T09:39:15Z")

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Hi All, I'd like to identify the node where my app crashes but I cannot really identify anything that could be used as a node id I could search for in the editor. Does anyone have any hint how to find the node responsi…

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## [ui\_Switch not working on iOS devices](https://discourse.nodered.org/t/ui-switch-not-working-on-ios-devices/43730)

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**Author:** [@wimphot](https://discourse.nodered.org/u/wimphot)\
**Replies:** 1\
**Last updated:** [6 April 2021 09:37 UTC](https://discourse.nodered.org/t/ui-switch-not-working-on-ios-devices/43730 "2021-04-06T09:37:27Z")

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OK time to take the plunge and ask my first question. I have Node-RED -vers 10.23.1 - I think, that's what I see under Node version in the Container Stack. I am tinkering with a Sonoff+MQTT, I have a ui\_switch which us…

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## [Processor architectire for node-red](https://discourse.nodered.org/t/processor-architectire-for-node-red/43741)

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**Author:** [@addi](https://discourse.nodered.org/u/addi)\
**Replies:** 2\
**Last updated:** [6 April 2021 09:29 UTC](https://discourse.nodered.org/t/processor-architectire-for-node-red/43741 "2021-04-06T09:29:58Z")

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Hello! Can somebody explain what kind of processor architectures node-red supports? It seems that only ARM Cortex Thaks in advance

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## [DWD Weather Node and variables](https://discourse.nodered.org/t/dwd-weather-node-and-variables/43589)

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**Author:** [@Nocoderactually](https://discourse.nodered.org/u/Nocoderactually)\
**Replies:** 1\
**Last updated:** [6 April 2021 08:18 UTC](https://discourse.nodered.org/t/dwd-weather-node-and-variables/43589 "2021-04-06T08:18:44Z")

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The DWD Weather node is a very usefull thing. However the mosixStation ID has to be entered statically. If I want to make a selection with a drop down menü to select between a couple of stations, I would like to use a v…

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## [Running python in virtual environment](https://discourse.nodered.org/t/running-python-in-virtual-environment/43744)

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**Author:** [@anguslou](https://discourse.nodered.org/u/anguslou)\
**Replies:** 0\
**Last updated:** [6 April 2021 07:38 UTC](https://discourse.nodered.org/t/running-python-in-virtual-environment/43744 "2021-04-06T07:38:42Z")

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I have some python scripts that want to run by Node-Red with a few questions: From Node-Red, how to pass A, B, C or D to specific functions in a Class? Python script (eg) Class math def multiply(A, B): print (A \* B…

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