# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=802

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

**Page:** 803

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## [Alarm from time captured in Google](https://discourse.nodered.org/t/alarm-from-time-captured-in-google/20783)

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**Author:** [@slurpey](https://discourse.nodered.org/u/slurpey)\
**Replies:** 10\
**Last updated:** [28 January 2020 03:17 UTC](https://discourse.nodered.org/t/alarm-from-time-captured-in-google/20783 "2020-01-28T03:17:10Z")

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In short: I have a time that comes as a spoken decimal "9.51" and I need to Convert in a time (solved below) Check time "now" and convert to 24hrs if needed (if time now is earlier than 9, then leave it as is, else, ad…

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## [MQTT Server Connectivity from Podman](https://discourse.nodered.org/t/mqtt-server-connectivity-from-podman/20943)

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**Author:** [@mattp](https://discourse.nodered.org/u/mattp)\
**Replies:** 0\
**Last updated:** [28 January 2020 01:39 UTC](https://discourse.nodered.org/t/mqtt-server-connectivity-from-podman/20943 "2020-01-28T01:39:46Z")

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Hi everyone, have been tearing my hair out over this one, and wondering if anyone has seen it. I am in the process of migrating my home automation setup from Centos 7 / Docker to Centos 8 / Podman and are testing my set…

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## [Save changes on node from sidebar](https://discourse.nodered.org/t/save-changes-on-node-from-sidebar/20818)

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**Author:** [@tanya](https://discourse.nodered.org/u/tanya)\
**Replies:** 4\
**Last updated:** [28 January 2020 00:30 UTC](https://discourse.nodered.org/t/save-changes-on-node-from-sidebar/20818 "2020-01-28T00:30:33Z")

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hi, i want to update on nodes from sidebar palette how can i do it?

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## [Ok, I have to ask: What's the difference between an externally written node and a subflow?](https://discourse.nodered.org/t/ok-i-have-to-ask-whats-the-difference-between-an-externally-written-node-and-a-subflow/20938)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 1\
**Last updated:** [28 January 2020 00:10 UTC](https://discourse.nodered.org/t/ok-i-have-to-ask-whats-the-difference-between-an-externally-written-node-and-a-subflow/20938 "2020-01-28T00:10:29Z")

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The title kind of speaks for itself. But I was just wondering what the difference is. A subflow is limited to 1 input. I'm not exactly sure a node is. Not that I have ever really seen any nodes with more than 1 input…

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## [Changes to Context Flow Variable also changes source array it was extracted from](https://discourse.nodered.org/t/changes-to-context-flow-variable-also-changes-source-array-it-was-extracted-from/17070)

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**Author:** [@IanH](https://discourse.nodered.org/u/IanH)\
**Replies:** 8\
**Last updated:** [27 January 2020 23:17 UTC](https://discourse.nodered.org/t/changes-to-context-flow-variable-also-changes-source-array-it-was-extracted-from/17070 "2020-01-27T23:17:27Z")

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I have found what I think is anomalous behavior (from what I expected) when changing an element in a context Flow Object Variable that was itself extracted as one object in an array of objects from a object in Context F…

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## [Powershell payload](https://discourse.nodered.org/t/powershell-payload/19613)

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**Author:** [@KevinPamu](https://discourse.nodered.org/u/KevinPamu)\
**Replies:** 4\
**Last updated:** [27 January 2020 22:14 UTC](https://discourse.nodered.org/t/powershell-payload/19613 "2020-01-27T22:14:32Z")

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Hello, I am running the powershell script on a windows machine using the powershell node. https://flows.nodered.org/node/node-red-contrib-powershell I get a payload that comes back when I change the debug node to msg…

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## [Maniuplating a msg:string so I can make it a msg.payload?](https://discourse.nodered.org/t/maniuplating-a-msg-string-so-i-can-make-it-a-msg-payload/20934)

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**Author:** [@WalterWhite](https://discourse.nodered.org/u/WalterWhite)\
**Replies:** 1\
**Last updated:** [27 January 2020 21:51 UTC](https://discourse.nodered.org/t/maniuplating-a-msg-string-so-i-can-make-it-a-msg-payload/20934 "2020-01-27T21:51:18Z")

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I have a payload that gets returned from a powershell node, which produces data as requested. However, the debug shows the format as msg:string I've been unsuccessful finding any documentations on how to point to this,…

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## [What's wrong in my flow](https://discourse.nodered.org/t/whats-wrong-in-my-flow/20927)

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**Author:** [@devifast](https://discourse.nodered.org/u/devifast)\
**Replies:** 1\
**Last updated:** [27 January 2020 21:00 UTC](https://discourse.nodered.org/t/whats-wrong-in-my-flow/20927 "2020-01-27T21:00:30Z")

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Im verry new in node red . I can't figure out where I'm wrong in this simple flow. sorry for my bad english. \[ { "id": "db1e7864.8ec9b8", "type": "tab", "label": "Flow 1", "disabled": false, "info": "" }, { "i…

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## [Node-Red \*CPU load\* -- wierd things going on](https://discourse.nodered.org/t/node-red-cpu-load-wierd-things-going-on/20856)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 18\
**Last updated:** [27 January 2020 20:44 UTC](https://discourse.nodered.org/t/node-red-cpu-load-wierd-things-going-on/20856 "2020-01-27T20:44:37Z")

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(Yeah, I'm a gluten for this.) Just mentioning. If anyone knows something, I'm interested. But more so it is a statement. My system: Intel NUC I5 CPU. 15 Gig or RAM. 500 G SSD. Ubuntu 18.04 LTS. NR 1.0.3 Firefo…

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## [Update text / gauge when load the page with latest value](https://discourse.nodered.org/t/update-text-gauge-when-load-the-page-with-latest-value/20925)

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**Author:** [@lucianv](https://discourse.nodered.org/u/lucianv)\
**Replies:** 3\
**Last updated:** [27 January 2020 20:04 UTC](https://discourse.nodered.org/t/update-text-gauge-when-load-the-page-with-latest-value/20925 "2020-01-27T20:04:30Z")

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Hi, I have a simple flow which is an mqtt in node which is read by a gauge and also by a function that insert into db the temp value received on the mqtt topic. If I have the page opened and mqtt receive a temp then the…

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## [Can Bus -- Schneider PLC](https://discourse.nodered.org/t/can-bus-schneider-plc/20922)

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**Author:** [@mastin\_zgz](https://discourse.nodered.org/u/mastin_zgz)\
**Replies:** 0\
**Last updated:** [27 January 2020 18:16 UTC](https://discourse.nodered.org/t/can-bus-schneider-plc/20922 "2020-01-27T18:16:16Z")

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Good afternoon, I introduce myself, I am new to node red, I have a project in mind and I don't know if it would be possible to do it, so I ask for help from those who know. I have a device with Can bus connectivity, an…

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## [How to track temperature trend](https://discourse.nodered.org/t/how-to-track-temperature-trend/20546)

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**Author:** [@mobamoba](https://discourse.nodered.org/u/mobamoba)\
**Replies:** 37\
**Last updated:** [27 January 2020 17:59 UTC](https://discourse.nodered.org/t/how-to-track-temperature-trend/20546 "2020-01-27T17:59:10Z")

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I can't quite figure out how to do something in Node Red so thought I'd ask here. I have a networked thermometer in my fridge and I'm trying to have Node Red send me an alert if the following two conditions are both met…

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## [Function to convert sensor resistance to temperature](https://discourse.nodered.org/t/function-to-convert-sensor-resistance-to-temperature/20861)

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**Author:** [@seattlebiker](https://discourse.nodered.org/u/seattlebiker)\
**Replies:** 14\
**Last updated:** [27 January 2020 17:12 UTC](https://discourse.nodered.org/t/function-to-convert-sensor-resistance-to-temperature/20861 "2020-01-27T17:12:07Z")

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Please forgive the long and an apparent off-topic post, but I'm at my wits end trying to figure out a math function node. I have a temperature/humidity sensor from MetOne Instruments that I'm trying to come up with a fu…

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## [\[Question\] Best way to install modules to an offline pc](https://discourse.nodered.org/t/question-best-way-to-install-modules-to-an-offline-pc/20902)

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**Author:** [@Nxito](https://discourse.nodered.org/u/Nxito)\
**Replies:** 11\
**Last updated:** [27 January 2020 16:22 UTC](https://discourse.nodered.org/t/question-best-way-to-install-modules-to-an-offline-pc/20902 "2020-01-27T16:22:21Z")

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Hi, to start, i'm using windows 10 : The problem is: what is the best way to install a module such as node-red-contrib-s7 (for example) on a computer without internet connection? On this offline device I have copied m…

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## [MySQL Node - change Host Variable](https://discourse.nodered.org/t/mysql-node-change-host-variable/20903)

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**Author:** [@jlb](https://discourse.nodered.org/u/jlb)\
**Replies:** 5\
**Last updated:** [27 January 2020 15:15 UTC](https://discourse.nodered.org/t/mysql-node-change-host-variable/20903 "2020-01-27T15:15:56Z")

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Hello, i'm using the MySql node with the ui node for inputs and results display. I have a dropdown list filled with all the possible database to connect. How can i send the selected database from the dropdown list to t…

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## [Simple JSON input string to LEDs on dash](https://discourse.nodered.org/t/simple-json-input-string-to-leds-on-dash/20003)

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**Author:** [@deelerke](https://discourse.nodered.org/u/deelerke)\
**Replies:** 20\
**Last updated:** [27 January 2020 12:54 UTC](https://discourse.nodered.org/t/simple-json-input-string-to-leds-on-dash/20003 "2020-01-27T12:54:03Z")

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hello, taking my first steps into Node-RED, I'm running into what seems a simple problem. I have an existing home automation system that outputs a JSON string with the status of every light in the house. The output loo…

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## [E-mail in node preferences](https://discourse.nodered.org/t/e-mail-in-node-preferences/20898)

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**Author:** [@risquare](https://discourse.nodered.org/u/risquare)\
**Replies:** 1\
**Last updated:** [27 January 2020 08:38 UTC](https://discourse.nodered.org/t/e-mail-in-node-preferences/20898 "2020-01-27T08:38:20Z")

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Trying to setup the "e-mail-in node" to pick up e-mails only that are originated by one particular sender. There is no such criteria in the menu, however there is an intriguing criteria set from msg.criteria - How do…

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## [Function node vs change node. I'm missing something](https://discourse.nodered.org/t/function-node-vs-change-node-im-missing-something/20888)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 6\
**Last updated:** [27 January 2020 00:02 UTC](https://discourse.nodered.org/t/function-node-vs-change-node-im-missing-something/20888 "2020-01-27T00:02:31Z")

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(look at my name) This flow: \[{"id":"35d675e4.2ad77a","type":"function","z":"184dc884.7aba5f","name":"","func":"delete msg.payload;\\nmsg.payload.COMMAND = \\"Command\\";\\nreturn msg;","outputs":1,"noerr":0,"x":220,"y":34…

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## [Link from subflow to 'normal' flow](https://discourse.nodered.org/t/link-from-subflow-to-normal-flow/20814)

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**Author:** [@techtimo](https://discourse.nodered.org/u/techtimo)\
**Replies:** 2\
**Last updated:** [26 January 2020 21:01 UTC](https://discourse.nodered.org/t/link-from-subflow-to-normal-flow/20814 "2020-01-26T21:01:51Z")

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Hi guys, I would like to start a flow out of a subflow. I have stored some parameters in the global object and a subflow that uses them and changes them a little depending from where the subflow is called. Now it happ…

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## [Light flow times and sun](https://discourse.nodered.org/t/light-flow-times-and-sun/20860)

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**Author:** [@oddmn](https://discourse.nodered.org/u/oddmn)\
**Replies:** 3\
**Last updated:** [26 January 2020 13:44 UTC](https://discourse.nodered.org/t/light-flow-times-and-sun/20860 "2020-01-26T13:44:57Z")

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Hello. Trying to create a flow that dim lights at different times (ok). In the same flow i want to add my lux (fibaro motion sensor) reader to turn off/on light if it is light outside is bright. here is my flow. flows…

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## [The \`change\` node..... Checking what I expect to what it does](https://discourse.nodered.org/t/the-change-node-checking-what-i-expect-to-what-it-does/20829)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 21\
**Last updated:** [26 January 2020 08:12 UTC](https://discourse.nodered.org/t/the-change-node-checking-what-i-expect-to-what-it-does/20829 "2020-01-26T08:12:30Z")

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I don't know what is happening or why I am doing this/these things. I am trying to get things working and when I rationalise it down to a small flow and try to test things: it gets nasty. What exactly does a change no…

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## [Insert data in sqlite without inject node](https://discourse.nodered.org/t/insert-data-in-sqlite-without-inject-node/20836)

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**Author:** [@NODE777](https://discourse.nodered.org/u/NODE777)\
**Replies:** 3\
**Last updated:** [26 January 2020 08:01 UTC](https://discourse.nodered.org/t/insert-data-in-sqlite-without-inject-node/20836 "2020-01-26T08:01:40Z")

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Hi There ! Can someone help me to review the function node code I've implemented to insert the two variables values hp and lp coming from a Particle Photon? The idea is not two use inject node but the subscription n…

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## [\`moment\` node, times and date stamps](https://discourse.nodered.org/t/moment-node-times-and-date-stamps/20826)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 6\
**Last updated:** [25 January 2020 23:04 UTC](https://discourse.nodered.org/t/moment-node-times-and-date-stamps/20826 "2020-01-25T23:04:00Z")

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Yeah, I'm still not getting it. I've looked back on this thread. Some help. Moment node But I am (typically) missing something. Adding slight insult to injury it is 11:49 here and I am not really wanting to wait 1:…

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## [Data segregation and display in different ui text](https://discourse.nodered.org/t/data-segregation-and-display-in-different-ui-text/20847)

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**Author:** [@Allappamp](https://discourse.nodered.org/u/Allappamp)\
**Replies:** 1\
**Last updated:** [25 January 2020 19:36 UTC](https://discourse.nodered.org/t/data-segregation-and-display-in-different-ui-text/20847 "2020-01-25T19:36:44Z")

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Hello, I have one problem please help me to solve that i have a serial data ex: "Device ID | Device Data" "1|232" and "2|232" and "3|232" i want to segregate data and place the data into separate ui text outputs. if …

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## [IKEA motion sensor](https://discourse.nodered.org/t/ikea-motion-sensor/20781)

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**Author:** [@BrianD](https://discourse.nodered.org/u/BrianD)\
**Replies:** 9\
**Last updated:** [25 January 2020 19:31 UTC](https://discourse.nodered.org/t/ikea-motion-sensor/20781 "2020-01-25T19:31:13Z")

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I have a Ikea motion sensor the output from which I can access in Node-Red using zigbee2mqtt. 23/01/2020, 17:05:34node: 475f9e2.959efe zigbee2mqtt/pirsensor : msg.payload : Object object occupancy: false linkquality…

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## [Bash script and Raspbian install issues again :(](https://discourse.nodered.org/t/bash-script-and-raspbian-install-issues-again/20752)

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**Author:** [@wb666greene](https://discourse.nodered.org/u/wb666greene)\
**Replies:** 13\
**Last updated:** [25 January 2020 18:49 UTC](https://discourse.nodered.org/t/bash-script-and-raspbian-install-issues-again/20752 "2020-01-25T18:49:46Z")

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Virgin Raspbian "Buster" install, 2019-09-26-raspbian-buster-full.zip. I setup OpenVINO and Coral Edgetpu support and verified that my AI code runs. My goal is to document the steps for my GitHub. All seems well. Ins…

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## [Help tracking this error - oops](https://discourse.nodered.org/t/help-tracking-this-error-oops/20525)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 17\
**Last updated:** [24 January 2020 23:29 UTC](https://discourse.nodered.org/t/help-tracking-this-error-oops/20525 "2020-01-24T23:29:05Z")

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This is a repost of what I accidentally deleted. This is what I had found and I deleted the question a bit too quickly. I found the problem, and edited the node to stop the error. Why wasn't the node's name shown? (T…

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## [VITA-49 Decoding](https://discourse.nodered.org/t/vita-49-decoding/20792)

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**Author:** [@n61ab](https://discourse.nodered.org/u/n61ab)\
**Replies:** 6\
**Last updated:** [24 January 2020 21:46 UTC](https://discourse.nodered.org/t/vita-49-decoding/20792 "2020-01-24T21:46:44Z")

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I have a Flex SDR Ham Radio Transceiver. I have used Node-Red to access its API for several very useful applications. This one has me stumped. I want to get the internal voltage from the radio. I subscribed to the …

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## [(Reproducable) Installed node-red-contrib-chatbot which disable/messed up projects](https://discourse.nodered.org/t/reproducable-installed-node-red-contrib-chatbot-which-disable-messed-up-projects/20580)

<div class="topic-metadata">

**Author:** [@zenofmud](https://discourse.nodered.org/u/zenofmud)\
**Replies:** 22\
**Last updated:** [24 January 2020 15:22 UTC](https://discourse.nodered.org/t/reproducable-installed-node-red-contrib-chatbot-which-disable-messed-up-projects/20580 "2020-01-24T15:22:18Z")

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OS: macOS 10.14.6 Node-red: v1.0.3 Node.js: v12.13.0 Running projects. So I was trying to look into an issue for a user. Somewhere in the process of installing start/stopping NR and removing the node, it lost the con…

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## [Routing external HTTP message to Node Red](https://discourse.nodered.org/t/routing-external-http-message-to-node-red/20800)

<div class="topic-metadata">

**Author:** [@Shakey7](https://discourse.nodered.org/u/Shakey7)\
**Replies:** 4\
**Last updated:** [24 January 2020 13:39 UTC](https://discourse.nodered.org/t/routing-external-http-message-to-node-red/20800 "2020-01-24T13:39:02Z")

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Hi All Glad to jump in this forum for my first topic I installed Nod-red on external virtual machine on Ubuntu 18 at @IP node-red-machine I want to route http message to my node-red machine to be handled by a HTTP IN…

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