# Latest

**URL:** https://discourse.nodered.org/latest.md?page=1100

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

**Page:** 1101

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## [Extract html input field value to payload](https://discourse.nodered.org/t/extract-html-input-field-value-to-payload/4568)

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**Author:** [@jmacle](https://discourse.nodered.org/u/jmacle)\
**Replies:** 14\
**Last updated:** [3 May 2020 13:34 UTC](https://discourse.nodered.org/t/extract-html-input-field-value-to-payload/4568 "2020-05-03T13:34:06Z")

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Hey all, I've created an input field in the template node and I just want to extract it to use in my flows. Here's the basic input field (without the brackets): input type="text" name="joel" And then I'd like to take …

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## [Don't know how to use pcf8574 cluster node](https://discourse.nodered.org/t/dont-know-how-to-use-pcf8574-cluster-node/25992)

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**Author:** [@Kiwi\_gamer01](https://discourse.nodered.org/u/Kiwi_gamer01)\
**Replies:** 3\
**Last updated:** [3 May 2020 13:11 UTC](https://discourse.nodered.org/t/dont-know-how-to-use-pcf8574-cluster-node/25992 "2020-05-03T13:11:06Z")

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In a python script i would write this: bus.write\_byte(0x20, 0x02) to send a command to a pin of the expansion board(PCF8574). How do you have to fill out the cluster node and the cluster configure to do the same?

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## [Chart options: mixed charts and bars and multi axes](https://discourse.nodered.org/t/chart-options-mixed-charts-and-bars-and-multi-axes/25814)

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**Author:** [@rwmingis](https://discourse.nodered.org/u/rwmingis)\
**Replies:** 7\
**Last updated:** [3 May 2020 12:03 UTC](https://discourse.nodered.org/t/chart-options-mixed-charts-and-bars-and-multi-axes/25814 "2020-05-03T12:03:34Z")

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Does anyone have a good example how to add attributes to the different datasets going to a chart. I have seen how to add a second y axes to a chart, but I don't know how to tell the chart on which axis to put which seri…

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## [Node not updated in palette manager](https://discourse.nodered.org/t/node-not-updated-in-palette-manager/10354)

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**Author:** [@gablau](https://discourse.nodered.org/u/gablau)\
**Replies:** 6\
**Last updated:** [3 May 2020 10:45 UTC](https://discourse.nodered.org/t/node-not-updated-in-palette-manager/10354 "2020-05-03T10:45:05Z")

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Hello, yesterday morning I updated my node node-red-contrib-blynk-ws but today I still don't see it updated in the palette manager and not even in flows.nodered.org why? how often are they updated? Of course the packag…

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## [The end of Darksky?](https://discourse.nodered.org/t/the-end-of-darksky/24003)

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**Author:** [@Paul-Reed](https://discourse.nodered.org/u/Paul-Reed)\
**Replies:** 31\
**Last updated:** [3 May 2020 10:29 UTC](https://discourse.nodered.org/t/the-end-of-darksky/24003 "2020-05-03T10:29:41Z")

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Topic moved to it's own thread from https://discourse.nodered.org/t/the-end-of-weather-underground/409

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## [Aggregate using join node](https://discourse.nodered.org/t/aggregate-using-join-node/25975)

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**Author:** [@dathor](https://discourse.nodered.org/u/dathor)\
**Replies:** 6\
**Last updated:** [3 May 2020 10:24 UTC](https://discourse.nodered.org/t/aggregate-using-join-node/25975 "2020-05-03T10:24:31Z")

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Hello, I am looking for any suggestions as to whether my approach to aggregating xml could be improved. Firstly, in a plc i am formatting data in xml and sending it out a tcp/ip socket. In my node-red app I am using t…

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## [\[Function\] Sleep Timer](https://discourse.nodered.org/t/function-sleep-timer/25964)

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**Author:** [@fizzyade](https://discourse.nodered.org/u/fizzyade)\
**Replies:** 0\
**Last updated:** [2 May 2020 23:03 UTC](https://discourse.nodered.org/t/function-sleep-timer/25964 "2020-05-02T23:03:17Z")

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Sorry if this isn’t the appropriate place, but no other category seems to be applicable.... I’ve been unable to find a function that operates as a sleep timer, so I wrote the following function (again, I really should c…

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## [Best practices for extending a node’s functionality at runtime/configuration time](https://discourse.nodered.org/t/best-practices-for-extending-a-node-s-functionality-at-runtime-configuration-time/25980)

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**Author:** [@afelix](https://discourse.nodered.org/u/afelix)\
**Replies:** 0\
**Last updated:** [3 May 2020 09:14 UTC](https://discourse.nodered.org/t/best-practices-for-extending-a-node-s-functionality-at-runtime-configuration-time/25980 "2020-05-03T09:14:31Z")

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I’m working on designing a node that functions as an API client to a specific website. I’ve actually written several essays on how this website is as if they tried to put together a practical guide of worst practices for…

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## [UI-Template msg.payload handling (Solved)](https://discourse.nodered.org/t/ui-template-msg-payload-handling-solved/25914)

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**Author:** [@bdbell](https://discourse.nodered.org/u/bdbell)\
**Replies:** 2\
**Last updated:** [3 May 2020 08:55 UTC](https://discourse.nodered.org/t/ui-template-msg-payload-handling-solved/25914 "2020-05-03T08:55:04Z")

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I am trying to use an array sent as msg.payload in a ui\_template node - have looked everywhere but can't quite figure this out. I am creating a HTML table in the ui\_template node, its for scheduling - I want to be able …

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## [Node-red-contrib-broadlink-control v2.1.0 Release](https://discourse.nodered.org/t/node-red-contrib-broadlink-control-v2-1-0-release/25972)

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**Author:** [@mlfunston](https://discourse.nodered.org/u/mlfunston)\
**Replies:** 2\
**Last updated:** [3 May 2020 06:06 UTC](https://discourse.nodered.org/t/node-red-contrib-broadlink-control-v2-1-0-release/25972 "2020-05-03T06:06:23Z")

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Adds support for Base64 encoded data as used in Home Assistant and other home automation systems for IR Data.

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## [Toggle button reset to off after trigger finished](https://discourse.nodered.org/t/toggle-button-reset-to-off-after-trigger-finished/25856)

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**Author:** [@Thewaver](https://discourse.nodered.org/u/Thewaver)\
**Replies:** 2\
**Last updated:** [3 May 2020 05:49 UTC](https://discourse.nodered.org/t/toggle-button-reset-to-off-after-trigger-finished/25856 "2020-05-03T05:49:18Z")

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I've been trying to work out how to turn a device on for a set time by using a toggle switch (slide to turn on) and reset to toggle switch back to the off position after the trigger has completed. This is what I have do…

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## [DarkSky Weather no longer accepting new accounts](https://discourse.nodered.org/t/darksky-weather-no-longer-accepting-new-accounts/25967)

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**Author:** [@topcorner18](https://discourse.nodered.org/u/topcorner18)\
**Replies:** 1\
**Last updated:** [3 May 2020 00:39 UTC](https://discourse.nodered.org/t/darksky-weather-no-longer-accepting-new-accounts/25967 "2020-05-03T00:39:29Z")

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Went to sign-up for the DarkSky API and found the below message as of March 31, 2020 and it appears will cease to function in 2021. Recommended alternatives? Thank you TimC By Adam Grossman on March 31, 2020. Today…

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## [Read from text file?](https://discourse.nodered.org/t/read-from-text-file/25963)

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**Author:** [@asdf123](https://discourse.nodered.org/u/asdf123)\
**Replies:** 3\
**Last updated:** [2 May 2020 23:29 UTC](https://discourse.nodered.org/t/read-from-text-file/25963 "2020-05-02T23:29:44Z")

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Hi, I'd like to ask for help on how to extract certain lines from a txt file. The text file is like: "attackComplexity" : "LOW",\\r\\n "privilegesRequired" : "NONE",\\r\\n "userInteraction" : "NONE",\\r\\n…

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## [Xiaomi BLE Sensor Temperature and Humitity](https://discourse.nodered.org/t/xiaomi-ble-sensor-temperature-and-humitity/25860)

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**Author:** [@McRMX](https://discourse.nodered.org/u/McRMX)\
**Replies:** 1\
**Last updated:** [2 May 2020 22:41 UTC](https://discourse.nodered.org/t/xiaomi-ble-sensor-temperature-and-humitity/25860 "2020-05-02T22:41:20Z")

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Hi, I have a raspberry with NODE-RED and Homebridge Node RED 1.0.6 NodeJS v14.1.0 (with npm 6.14.4 When I install the node "node-red-contrib-xiaomi-ble" I try to connect a Xiaomi Mijia Bluetooth Temperature Humidity…

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## [Dashboard button link to url](https://discourse.nodered.org/t/dashboard-button-link-to-url/25958)

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**Author:** [@micle](https://discourse.nodered.org/u/micle)\
**Replies:** 1\
**Last updated:** [2 May 2020 21:29 UTC](https://discourse.nodered.org/t/dashboard-button-link-to-url/25958 "2020-05-02T21:29:18Z")

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Hello guys. id like to link url using button, don't use template i dont find any way. help me finally, when i click to button(in dashboard button) ==\> open url(ex. google.com or others url)

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## [UI\_form formElement Date off -1 day](https://discourse.nodered.org/t/ui-form-formelement-date-off-1-day/25945)

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**Author:** [@warnert](https://discourse.nodered.org/u/warnert)\
**Replies:** 13\
**Last updated:** [2 May 2020 21:20 UTC](https://discourse.nodered.org/t/ui-form-formelement-date-off-1-day/25945 "2020-05-02T21:20:30Z")

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I need two dates as start and endpoint for my graphs from the database. I use date picker Form Element type Date Now I found out that if I select 2020-05-02 the resulting output is 2020-05-01T22:00:00Z. I now crop off…

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## [Raspberry Pi 4+](https://discourse.nodered.org/t/raspberry-pi-4/16075)

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**Author:** [@dynamicdave](https://discourse.nodered.org/u/dynamicdave)\
**Replies:** 132\
**Last updated:** [2 May 2020 20:39 UTC](https://discourse.nodered.org/t/raspberry-pi-4/16075 "2020-05-02T20:39:27Z")

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Don't know if this topic is appropriate here, but here goes... Just received a 'shiny new' Raspberry Pi 4+ and must say it is VERRRRRRRYYYYY fast. The special HDMI cable was out of stock so I set the Pi up in 'headless…

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## [Ui-Builder with Mysql](https://discourse.nodered.org/t/ui-builder-with-mysql/25897)

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**Author:** [@OmarDev](https://discourse.nodered.org/u/OmarDev)\
**Replies:** 5\
**Last updated:** [2 May 2020 20:31 UTC](https://discourse.nodered.org/t/ui-builder-with-mysql/25897 "2020-05-02T20:31:41Z")

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Hi everyone, i need to example, using ui-Builder with mysql? thanks

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## [How to watch a Payload - Response when change](https://discourse.nodered.org/t/how-to-watch-a-payload-response-when-change/25950)

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**Author:** [@Flixm](https://discourse.nodered.org/u/Flixm)\
**Replies:** 2\
**Last updated:** [2 May 2020 19:54 UTC](https://discourse.nodered.org/t/how-to-watch-a-payload-response-when-change/25950 "2020-05-02T19:54:59Z")

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Hi there, i'd like to get a response when a payload change to another (not known). In my case i´d like to send me a pushover Message when i get a new public IP adress ... is there a node to watch if there something cha…

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## [Http request keeps requesting, kills Node-RED server](https://discourse.nodered.org/t/http-request-keeps-requesting-kills-node-red-server/25854)

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**Author:** [@cow\_n\_berg](https://discourse.nodered.org/u/cow_n_berg)\
**Replies:** 4\
**Last updated:** [2 May 2020 19:13 UTC](https://discourse.nodered.org/t/http-request-keeps-requesting-kills-node-red-server/25854 "2020-05-02T19:13:35Z")

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Hello, my http request keeps the status "requesting" and will eventually kill the Node-RED server on my Raspberry Pi. So far I built two other http request flows, to get data from websites. Those are running very happil…

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## [Door & Window sensor logic](https://discourse.nodered.org/t/door-window-sensor-logic/25911)

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**Author:** [@StevenLangdale](https://discourse.nodered.org/u/StevenLangdale)\
**Replies:** 3\
**Last updated:** [2 May 2020 19:08 UTC](https://discourse.nodered.org/t/door-window-sensor-logic/25911 "2020-05-02T19:08:28Z")

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I'm trying to use Node-RED for some automation logic. Got a window sensor & door sensor and I want to trigger something when both are open (true) for x period of time. I'm currently using the and gate out of node-red-c…

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## [NR as Modbus TCP Server cannot write self register](https://discourse.nodered.org/t/nr-as-modbus-tcp-server-cannot-write-self-register/25928)

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**Author:** [@17greesm](https://discourse.nodered.org/u/17greesm)\
**Replies:** 4\
**Last updated:** [2 May 2020 17:44 UTC](https://discourse.nodered.org/t/nr-as-modbus-tcp-server-cannot-write-self-register/25928 "2020-05-02T17:44:45Z")

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I am not able to write address from modbus write flex node. But I can easily write data from client side. Please Note: Node-Red is configured as Modbus TCP Server and used " node-red-contrib-modbus" \[{"id":"53780dc1.dc…

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## [How to read a string of Tagnames from a csv file](https://discourse.nodered.org/t/how-to-read-a-string-of-tagnames-from-a-csv-file/25925)

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**Author:** [@Munier](https://discourse.nodered.org/u/Munier)\
**Replies:** 1\
**Last updated:** [2 May 2020 17:24 UTC](https://discourse.nodered.org/t/how-to-read-a-string-of-tagnames-from-a-csv-file/25925 "2020-05-02T17:24:32Z")

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Hello all Can you please help me on how I can read the string of the id as in the table below? I want to find a way to make the function node read the string for the id for example E01 to read as E01\_UA, E02 to read …

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## [New to Node Red and coding](https://discourse.nodered.org/t/new-to-node-red-and-coding/25902)

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**Author:** [@MrDoggss](https://discourse.nodered.org/u/MrDoggss)\
**Replies:** 3\
**Last updated:** [2 May 2020 17:19 UTC](https://discourse.nodered.org/t/new-to-node-red-and-coding/25902 "2020-05-02T17:19:40Z")

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Hello all! Just getting started with Node Red, and I have a couple newbie questions. I'm using an Arduino with a simple LED blink flow. (Not my creation) The dashboard shows the state as true/ false. I've been messin…

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## [Mongodb aggregate data](https://discourse.nodered.org/t/mongodb-aggregate-data/25233)

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**Author:** [@apex](https://discourse.nodered.org/u/apex)\
**Replies:** 1\
**Last updated:** [2 May 2020 16:20 UTC](https://discourse.nodered.org/t/mongodb-aggregate-data/25233 "2020-05-02T16:20:37Z")

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how can i aggregate the data in node red? i am using node-red-contrib-mongodb2 \[{"id":"a5d3fca9.1d6fb","type":"mongodb2 in","z":"17988aef.77ac65","service":"\_ext\_","configNode":"60e6b2b.5c7bc4c","name":"","collectio…

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## [Mongodb3 sort command to find maximum value](https://discourse.nodered.org/t/mongodb3-sort-command-to-find-maximum-value/25936)

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**Author:** [@divyansh](https://discourse.nodered.org/u/divyansh)\
**Replies:** 0\
**Last updated:** [2 May 2020 16:14 UTC](https://discourse.nodered.org/t/mongodb3-sort-command-to-find-maximum-value/25936 "2020-05-02T16:14:22Z")

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Hi, I am unable to understand, the functioning of mongodb3 package. I am trying to get max value , using following. msg.operation="findOne"; msg.sort={\_id:-1}; msg.limit=1; return msg; However this command runs perfe…

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## [Error: Permission denied, cannot open /dev/ttyr0](https://discourse.nodered.org/t/error-permission-denied-cannot-open-dev-ttyr0/25148)

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**Author:** [@maccoa](https://discourse.nodered.org/u/maccoa)\
**Replies:** 4\
**Last updated:** [2 May 2020 14:56 UTC](https://discourse.nodered.org/t/error-permission-denied-cannot-open-dev-ttyr0/25148 "2020-05-02T14:56:49Z")

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Hello everyone I try to communicate via rs232 over tcp / ip. I installed the NPort 5110 drivers (1-port RS-232 serial device server) but in node I don't have the rights. in a terminal I try to understand why. ls -l …

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## [Node-red webpage enables prevent-sleep in OSX/Firefox](https://discourse.nodered.org/t/node-red-webpage-enables-prevent-sleep-in-osx-firefox/25796)

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**Author:** [@gekkie](https://discourse.nodered.org/u/gekkie)\
**Replies:** 11\
**Last updated:** [2 May 2020 13:57 UTC](https://discourse.nodered.org/t/node-red-webpage-enables-prevent-sleep-in-osx-firefox/25796 "2020-05-02T13:57:29Z")

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Hi All, After breaking my head on why my macbook would not sleep I figured out Node-red is the culprite. I use 1.0.6 right now but this was also there in 1.0.2 Firefox version 75.0 When I open the node-red web page th…

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## [Save data in local Mongodb](https://discourse.nodered.org/t/save-data-in-local-mongodb/25919)

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**Author:** [@MoMo](https://discourse.nodered.org/u/MoMo)\
**Replies:** 0\
**Last updated:** [2 May 2020 12:13 UTC](https://discourse.nodered.org/t/save-data-in-local-mongodb/25919 "2020-05-02T12:13:16Z")

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Hi everybody, I'm struggeling with mongodb. How can i save Data in my mongodb on my PC? I installed the mongodb2 at node-red and also locally on my PC. When i deploy and push the inject node, there is a debugging outpu…

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## [\[Flow\] Display Message On Emby](https://discourse.nodered.org/t/flow-display-message-on-emby/25918)

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**Author:** [@fizzyade](https://discourse.nodered.org/u/fizzyade)\
**Replies:** 0\
**Last updated:** [2 May 2020 12:04 UTC](https://discourse.nodered.org/t/flow-display-message-on-emby/25918 "2020-05-02T12:04:58Z")

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I have been setting up a whole load of automation for various things, we use emby for both media playback and live tv around our house, we use no other sources. We use NVIDIA shields as devices, and the new remote is aw…

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