# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=726

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

**Page:** 727

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## [Node Red sleeping on OrangePi](https://discourse.nodered.org/t/node-red-sleeping-on-orangepi/29029)

<div class="topic-metadata">

**Author:** [@a1419797](https://discourse.nodered.org/u/a1419797)\
**Replies:** 5\
**Last updated:** [27 June 2020 03:29 UTC](https://discourse.nodered.org/t/node-red-sleeping-on-orangepi/29029 "2020-06-27T03:29:29Z")

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Hello. Debian + Mosqitto + Node-Red + PM2 is installed on OrangePi and everything works well, MQTT handles Old, Node-Red draws graphs. But it’s worth leaving it overnight and connecting to the Web interface the next day…

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## [Low.js for NR runtime on ESP32](https://discourse.nodered.org/t/low-js-for-nr-runtime-on-esp32/29001)

<div class="topic-metadata">

**Author:** [@Luckyboy](https://discourse.nodered.org/u/Luckyboy)\
**Replies:** 14\
**Last updated:** [27 June 2020 00:07 UTC](https://discourse.nodered.org/t/low-js-for-nr-runtime-on-esp32/29001 "2020-06-27T00:07:38Z")

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Hi, Is it possible to use low.js on esp32 for NR runtime? Thanks!

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## [If excel cell value changes, copy value to node red](https://discourse.nodered.org/t/if-excel-cell-value-changes-copy-value-to-node-red/29021)

<div class="topic-metadata">

**Author:** [@SATHYA\_JAPAN](https://discourse.nodered.org/u/SATHYA_JAPAN)\
**Replies:** 3\
**Last updated:** [26 June 2020 21:26 UTC](https://discourse.nodered.org/t/if-excel-cell-value-changes-copy-value-to-node-red/29021 "2020-06-26T21:26:51Z")

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Hello, I need your advice on below points I want to read the data in cell A1(numeric value) from excel sheet whenever the data in cell A1 has changed , I need to trigger event in Node red and send email notificati…

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## [Moving Flows From One Instance To Another?](https://discourse.nodered.org/t/moving-flows-from-one-instance-to-another/28972)

<div class="topic-metadata">

**Author:** [@Nodi.Rubrum](https://discourse.nodered.org/u/Nodi.Rubrum)\
**Replies:** 8\
**Last updated:** [26 June 2020 21:21 UTC](https://discourse.nodered.org/t/moving-flows-from-one-instance-to-another/28972 "2020-06-26T21:21:57Z")

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When moving flows from one instance of node-red to another? How do I avoid orphaning the UI elements, dashboard elements. I was doing exports and imports of flows, but I discovered the dashboard elements are orphaned. …

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## [Parsing an object, when part of it isn't "object-y"](https://discourse.nodered.org/t/parsing-an-object-when-part-of-it-isnt-object-y/29043)

<div class="topic-metadata">

**Author:** [@impvan](https://discourse.nodered.org/u/impvan)\
**Replies:** 2\
**Last updated:** [26 June 2020 21:00 UTC](https://discourse.nodered.org/t/parsing-an-object-when-part-of-it-isnt-object-y/29043 "2020-06-26T21:00:07Z")

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Received MQTT message is converted using the JSON node and gives this output: tele/Hetty/SENSOR : msg.payload : Object object Time: "2020-06-26T20:36:58" DS18B20-1: object Id: "030197946C6B" Temperature: 21.…

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## [Pull request proposal - Expand the copy path tooltip to include the path](https://discourse.nodered.org/t/pull-request-proposal-expand-the-copy-path-tooltip-to-include-the-path/29046)

<div class="topic-metadata">

**Author:** [@ghayne](https://discourse.nodered.org/u/ghayne)\
**Replies:** 2\
**Last updated:** [26 June 2020 20:53 UTC](https://discourse.nodered.org/t/pull-request-proposal-expand-the-copy-path-tooltip-to-include-the-path/29046 "2020-06-26T20:53:01Z")

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I posted a similar suggestion a while back, but got little feedback. Simply expand the Copy Path tooltip to include the path being copied.

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## [Uibuilder : range slider on mobile phone](https://discourse.nodered.org/t/uibuilder-range-slider-on-mobile-phone/28953)

<div class="topic-metadata">

**Author:** [@t\_ho](https://discourse.nodered.org/u/t_ho)\
**Replies:** 11\
**Last updated:** [26 June 2020 19:27 UTC](https://discourse.nodered.org/t/uibuilder-range-slider-on-mobile-phone/28953 "2020-06-26T19:27:50Z")

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I am having an issue using a range slider in uibuilder on a mobile phone. The aim is to change the brightness of an ikea-tradfri-bulb. This is mainly working using a Desktop-Browser or a Nexus-Tablet. It does not work…

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## [Write a Coil in Modbus](https://discourse.nodered.org/t/write-a-coil-in-modbus/29042)

<div class="topic-metadata">

**Author:** [@jrahumadag](https://discourse.nodered.org/u/jrahumadag)\
**Replies:** 0\
**Last updated:** [26 June 2020 19:33 UTC](https://discourse.nodered.org/t/write-a-coil-in-modbus/29042 "2020-06-26T19:33:57Z")

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Hi, A few words before: I new in Node-Red (and in the world of programming). I'm, doing a little project that consist in to read a Moxa Iologik with AI (4-20mA), DI and DO; then i'm connecting the signals to ubidots. I…

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## [MQTT. Thingspeak](https://discourse.nodered.org/t/mqtt-thingspeak/28898)

<div class="topic-metadata">

**Author:** [@Martin10](https://discourse.nodered.org/u/Martin10)\
**Replies:** 17\
**Last updated:** [26 June 2020 15:00 UTC](https://discourse.nodered.org/t/mqtt-thingspeak/28898 "2020-06-26T15:00:59Z")

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Hi. Recently i made a flow, which allow me to sent sensor data to thingspeak via http. But now i try to make a flow to help me sent sensor data to thingspeak via mqtt (mqtt.thingspeak.com). Any help?

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## [Payload array - how to sort?](https://discourse.nodered.org/t/payload-array-how-to-sort/29018)

<div class="topic-metadata">

**Author:** [@Mckenzi](https://discourse.nodered.org/u/Mckenzi)\
**Replies:** 8\
**Last updated:** [26 June 2020 14:24 UTC](https://discourse.nodered.org/t/payload-array-how-to-sort/29018 "2020-06-26T14:24:32Z")

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I'm looking for a way to play with data from ERP system. Idea is to create a dashboard which shows list of customers and status/qty of orders. I was able to get the data from Excel file to NR. Structure of excel table a…

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## [Node-RED crash.es due to zlib error](https://discourse.nodered.org/t/node-red-crash-es-due-to-zlib-error/29008)

<div class="topic-metadata">

**Author:** [@RogerioCassares](https://discourse.nodered.org/u/RogerioCassares)\
**Replies:** 7\
**Last updated:** [26 June 2020 14:17 UTC](https://discourse.nodered.org/t/node-red-crash-es-due-to-zlib-error/29008 "2020-06-26T14:17:32Z")

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Hi all! For some reason i cannot know why, my node-red instance crashes untipically an the only error i can see at logs are: 24 Jun 04:22:13 - \[red\] Uncaught Exception: 24 Jun 04:22:13 - TypeError: Cannot read propert…

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## [Bad form probably, but is this true about context variables](https://discourse.nodered.org/t/bad-form-probably-but-is-this-true-about-context-variables/29006)

<div class="topic-metadata">

**Author:** [@tmichaeltx](https://discourse.nodered.org/u/tmichaeltx)\
**Replies:** 5\
**Last updated:** [26 June 2020 13:44 UTC](https://discourse.nodered.org/t/bad-form-probably-but-is-this-true-about-context-variables/29006 "2020-06-26T13:44:59Z")

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When I first started to use context variables, I was only saving primitives and so to change them I had sequences like this: flow.set("stored number",1) //other code temp = flow.get("stored number") temp = temp + 1 flow…

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## [AlaSQL working with msg.payload](https://discourse.nodered.org/t/alasql-working-with-msg-payload/28964)

<div class="topic-metadata">

**Author:** [@mpxd](https://discourse.nodered.org/u/mpxd)\
**Replies:** 18\
**Last updated:** [26 June 2020 13:14 UTC](https://discourse.nodered.org/t/alasql-working-with-msg-payload/28964 "2020-06-26T13:14:51Z")

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Hello there, did anyone here already try to inject a msg.payload into an AlaSQL node ? Excerpt from the documentation: Refer to input data in msg.payload with $0 in your SQL. If msg.payload is an array the first value…

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## [MQTT.FX Thingspeak](https://discourse.nodered.org/t/mqtt-fx-thingspeak/28830)

<div class="topic-metadata">

**Author:** [@Martin10](https://discourse.nodered.org/u/Martin10)\
**Replies:** 12\
**Last updated:** [26 June 2020 12:37 UTC](https://discourse.nodered.org/t/mqtt-fx-thingspeak/28830 "2020-06-26T12:37:21Z")

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I try to do this project, but with DHT sensors, and i've got this error. Any help? https://flows.nodered.org/flow/00e8c4223c3a4e6539b75a7541abfef2 I use MQTT.fx broker (With thingspeak) and all settings (pub/sub) i…

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## [Server blocked deploy not possible](https://discourse.nodered.org/t/server-blocked-deploy-not-possible/28906)

<div class="topic-metadata">

**Author:** [@cigno](https://discourse.nodered.org/u/cigno)\
**Replies:** 9\
**Last updated:** [26 June 2020 08:55 UTC](https://discourse.nodered.org/t/server-blocked-deploy-not-possible/28906 "2020-06-26T08:55:43Z")

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Hello everyone . Can anyone tell me why the server crashed? as soon as I deploy this message appears to me. Thanks in advance.

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## [Adding a payload to a varible](https://discourse.nodered.org/t/adding-a-payload-to-a-varible/28939)

<div class="topic-metadata">

**Author:** [@rmystique](https://discourse.nodered.org/u/rmystique)\
**Replies:** 3\
**Last updated:** [26 June 2020 07:46 UTC](https://discourse.nodered.org/t/adding-a-payload-to-a-varible/28939 "2020-06-26T07:46:01Z")

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I am trying to take an input payload and add to it a varible that is stored and output a combined value using a function node with the following: msg.payload = msg.payload + flow.delay return msg; But i get a debug ou…

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## [Trouble testing for undefined](https://discourse.nodered.org/t/trouble-testing-for-undefined/28973)

<div class="topic-metadata">

**Author:** [@thebaldgeek](https://discourse.nodered.org/u/thebaldgeek)\
**Replies:** 26\
**Last updated:** [26 June 2020 06:57 UTC](https://discourse.nodered.org/t/trouble-testing-for-undefined/28973 "2020-06-26T06:57:10Z")

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Been at this for a few hours and have plumbed the depths of these forums, but I am still stuck..... Doing a select on a MySQL database and if some of the results are missing from the database, I get a TypeError undefine…

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## [Change value: 1 to true](https://discourse.nodered.org/t/change-value-1-to-true/28861)

<div class="topic-metadata">

**Author:** [@carmar19](https://discourse.nodered.org/u/carmar19)\
**Replies:** 5\
**Last updated:** [26 June 2020 06:40 UTC](https://discourse.nodered.org/t/change-value-1-to-true/28861 "2020-06-26T06:40:22Z")

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good night i am new to this program and i find it very interesting i am learning from the good going to the problem and connected a nano plc and i want to activate the output the registry votes me a value 1 but i want to…

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## [How to align the time in different charts in one dashboard?](https://discourse.nodered.org/t/how-to-align-the-time-in-different-charts-in-one-dashboard/28860)

<div class="topic-metadata">

**Author:** [@AK51](https://discourse.nodered.org/u/AK51)\
**Replies:** 3\
**Last updated:** [26 June 2020 06:33 UTC](https://discourse.nodered.org/t/how-to-align-the-time-in-different-charts-in-one-dashboard/28860 "2020-06-26T06:33:07Z")

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Hi, I have data in several MYSQL tables. when I get the data out and plot to the charts, because the Timestamp in each table are not the same, the starting time and range are not the same. e.g. newMsg.topic = "SELECT …

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## [Tail node using UNC path](https://discourse.nodered.org/t/tail-node-using-unc-path/28914)

<div class="topic-metadata">

**Author:** [@gbos3415](https://discourse.nodered.org/u/gbos3415)\
**Replies:** 14\
**Last updated:** [25 June 2020 20:12 UTC](https://discourse.nodered.org/t/tail-node-using-unc-path/28914 "2020-06-25T20:12:03Z")

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Hello, how can i use the tail node with a shared unc path? im getting "File not found: \\\\10.0.0.174\\Logs\\RuleSystem.log" i already set shared permission.

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## [Efficient Database Updates](https://discourse.nodered.org/t/efficient-database-updates/28965)

<div class="topic-metadata">

**Author:** [@ddelapasse](https://discourse.nodered.org/u/ddelapasse)\
**Replies:** 7\
**Last updated:** [25 June 2020 19:38 UTC](https://discourse.nodered.org/t/efficient-database-updates/28965 "2020-06-25T19:38:39Z")

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Hi, I have a few hundred rows in Mongodb that I need extract on a scheduled basis, run each row through some functions and then update the database. I grabbed Mongodb3 connector because it allowed BulkWrite and UpdateM…

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## [Make my own node](https://discourse.nodered.org/t/make-my-own-node/28854)

<div class="topic-metadata">

**Author:** [@lalo](https://discourse.nodered.org/u/lalo)\
**Replies:** 10\
**Last updated:** [25 June 2020 19:07 UTC](https://discourse.nodered.org/t/make-my-own-node/28854 "2020-06-25T19:07:35Z")

</div>

I want to build my own Node any guide?

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## [Authentication issues](https://discourse.nodered.org/t/authentication-issues/28997)

<div class="topic-metadata">

**Author:** [@Joaovitor](https://discourse.nodered.org/u/Joaovitor)\
**Replies:** 0\
**Last updated:** [25 June 2020 18:30 UTC](https://discourse.nodered.org/t/authentication-issues/28997 "2020-06-25T18:30:58Z")

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I read the security documentation of the publisher and decided to implement password and user through AdminAuth. However, I'm having problems: no matter how much I write the same information as the registry, I still have…

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## [Using a string as hex not as string](https://discourse.nodered.org/t/using-a-string-as-hex-not-as-string/28974)

<div class="topic-metadata">

**Author:** [@Bond246](https://discourse.nodered.org/u/Bond246)\
**Replies:** 2\
**Last updated:** [25 June 2020 18:18 UTC](https://discourse.nodered.org/t/using-a-string-as-hex-not-as-string/28974 "2020-06-25T18:18:11Z")

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Hello, in my flow i'm working with xml-files. The xml-file is translated to json so every xml-tag is already a json-key with string-value. One of the xml-values should not be a string-type it shout be hex: 31343a31353…

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## [Beginner - button on web page to control relay](https://discourse.nodered.org/t/beginner-button-on-web-page-to-control-relay/28896)

<div class="topic-metadata">

**Author:** [@henryammons](https://discourse.nodered.org/u/henryammons)\
**Replies:** 3\
**Last updated:** [25 June 2020 17:27 UTC](https://discourse.nodered.org/t/beginner-button-on-web-page-to-control-relay/28896 "2020-06-25T17:27:25Z")

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Hello, I am new to Node-Red. I have a relay attached to a Pi using GPIO, pin 26. I am trying to create a basic web page (UI) with a button, that when pressed, sends a '1' to the relay turning it on, then when the butt…

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## [Cursor in wrong position](https://discourse.nodered.org/t/cursor-in-wrong-position/27217)

<div class="topic-metadata">

**Author:** [@Yo-Pappie](https://discourse.nodered.org/u/Yo-Pappie)\
**Replies:** 8\
**Last updated:** [25 June 2020 17:20 UTC](https://discourse.nodered.org/t/cursor-in-wrong-position/27217 "2020-06-25T17:20:46Z")

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Good day I am new to Node Red, I have only been playing around for the past month or so. I have a Raspberry Pi 3 setup with Node Red installed on it with the following Nodes installed: node-red-contrib-amazon-echo no…

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## [HueMagic Problem](https://discourse.nodered.org/t/huemagic-problem/28937)

<div class="topic-metadata">

**Author:** [@MAaron](https://discourse.nodered.org/u/MAaron)\
**Replies:** 26\
**Last updated:** [25 June 2020 17:13 UTC](https://discourse.nodered.org/t/huemagic-problem/28937 "2020-06-25T17:13:52Z")

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Hi there! I have a huge problem... I have Philips Hue bulbs, and for the past 3 days, after I updated the nodepalette for huemagic, my nodes don't work as they used to... The problem is with the function node. I had t…

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## [How to build a modal switch](https://discourse.nodered.org/t/how-to-build-a-modal-switch/28986)

<div class="topic-metadata">

**Author:** [@Noh](https://discourse.nodered.org/u/Noh)\
**Replies:** 0\
**Last updated:** [25 June 2020 16:47 UTC](https://discourse.nodered.org/t/how-to-build-a-modal-switch/28986 "2020-06-25T16:47:11Z")

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I have built an Arduino based humidity switch for my bathroom fan: Arduino1 + humidity sensor, publishing humidity value on MQTT Arduino2 + relay, connected to fan & subscribing to fanState ("ON"/"OFF") Raspberry Pi + …

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## [Multiple Nodes In One Module/Package?](https://discourse.nodered.org/t/multiple-nodes-in-one-module-package/28853)

<div class="topic-metadata">

**Author:** [@Nodi.Rubrum](https://discourse.nodered.org/u/Nodi.Rubrum)\
**Replies:** 24\
**Last updated:** [25 June 2020 13:49 UTC](https://discourse.nodered.org/t/multiple-nodes-in-one-module-package/28853 "2020-06-25T13:49:02Z")

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How does one configure the package.json, and respective js and html files to have multiple nodes defined in one module/package? I took a crack at it, and I am getting a really, at least to me odd error in the manage pal…

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## [Write data to Influxdb 2.0 with Node Red- Type Error](https://discourse.nodered.org/t/write-data-to-influxdb-2-0-with-node-red-type-error/28950)

<div class="topic-metadata">

**Author:** [@neelanjan](https://discourse.nodered.org/u/neelanjan)\
**Replies:** 6\
**Last updated:** [25 June 2020 13:14 UTC](https://discourse.nodered.org/t/write-data-to-influxdb-2-0-with-node-red-type-error/28950 "2020-06-25T13:14:30Z")

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Hi, I have been using Nodered to write data influxdb 1.7 and thats running perfectly. Now, I am trying to write the same data using the same format that used with Influxdb 1.7, I am getting Type Error :- On the Influx…

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