# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=725

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

**Page:** 726

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## [\[Solved\] Ok, loaded node-red-dashboard, but no ui\_table object?](https://discourse.nodered.org/t/solved-ok-loaded-node-red-dashboard-but-no-ui-table-object/29093)

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**Author:** [@Nodi.Rubrum](https://discourse.nodered.org/u/Nodi.Rubrum)\
**Replies:** 7\
**Last updated:** [28 June 2020 15:11 UTC](https://discourse.nodered.org/t/solved-ok-loaded-node-red-dashboard-but-no-ui-table-object/29093 "2020-06-28T15:11:24Z")

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Ok, loaded node-red-dashboard, but no ui\_table object? Log file just says node-red is waiting for ui\_table node. Pop up dialog states that ui\_table node is missing as well. Tried uninstall and reinstall of package, sa…

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## [I need a sanity check](https://discourse.nodered.org/t/i-need-a-sanity-check/29113)

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**Author:** [@injector22](https://discourse.nodered.org/u/injector22)\
**Replies:** 2\
**Last updated:** [28 June 2020 14:27 UTC](https://discourse.nodered.org/t/i-need-a-sanity-check/29113 "2020-06-28T14:27:05Z")

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I think I'm either going nuts or I'm missing something obvious. I have a relay board that returns a string 0 or 1 based on the relay state. I'm trying to convert the "int" to on/off and pass it as the payload to a switch…

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## [Advice on Database Design for Home Automation](https://discourse.nodered.org/t/advice-on-database-design-for-home-automation/29078)

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**Author:** [@martynwheeler](https://discourse.nodered.org/u/martynwheeler)\
**Replies:** 6\
**Last updated:** [28 June 2020 13:25 UTC](https://discourse.nodered.org/t/advice-on-database-design-for-home-automation/29078 "2020-06-28T13:25:24Z")

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Hi, I have just discovered node red and it seems fantastic. I am trying to put together a smart home system and it seems really quick to do development. At the moment I am just in the process of setting up various sen…

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## [How to use a core node inside of a custom node implementation](https://discourse.nodered.org/t/how-to-use-a-core-node-inside-of-a-custom-node-implementation/28565)

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**Author:** [@framp](https://discourse.nodered.org/u/framp)\
**Replies:** 63\
**Last updated:** [28 June 2020 12:34 UTC](https://discourse.nodered.org/t/how-to-use-a-core-node-inside-of-a-custom-node-implementation/28565 "2020-06-28T12:34:53Z")

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I stumbled upon NodeRed when I searched for an alternative to openHAB to control my 433MHz switches. openHAB ist too heavyweight for my use case. I detected NodeRed and created a NodeRed Flow with a dashboard in a couple…

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## [Log is seen as an Error](https://discourse.nodered.org/t/log-is-seen-as-an-error/29107)

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**Author:** [@nicolae.zidaru](https://discourse.nodered.org/u/nicolae.zidaru)\
**Replies:** 3\
**Last updated:** [28 June 2020 11:19 UTC](https://discourse.nodered.org/t/log-is-seen-as-an-error/29107 "2020-06-28T11:19:43Z")

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Hello , I have this code and Error and I need to make this proiect done by today. I have a Temp sensor on arduino how is connect with raspberry pi 4 and node red Thx

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## [Newbie DHT11 question](https://discourse.nodered.org/t/newbie-dht11-question/29103)

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**Author:** [@Rog\_Red](https://discourse.nodered.org/u/Rog_Red)\
**Replies:** 8\
**Last updated:** [28 June 2020 10:36 UTC](https://discourse.nodered.org/t/newbie-dht11-question/29103 "2020-06-28T10:36:06Z")

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Hi All.. I'm new to Node Red and I am trying to figure out why my DHT11 payload is only whole numbers. Not so much that I miss the decimal point (accuracy is not that good anyway) but is this something that is coded in…

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## [How to send Data from CVS File to Azure IotHub](https://discourse.nodered.org/t/how-to-send-data-from-cvs-file-to-azure-iothub/29096)

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**Author:** [@MalZai](https://discourse.nodered.org/u/MalZai)\
**Replies:** 0\
**Last updated:** [28 June 2020 06:27 UTC](https://discourse.nodered.org/t/how-to-send-data-from-cvs-file-to-azure-iothub/29096 "2020-06-28T06:27:53Z")

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Hi there, I'm a beginner here and trying to play around with Azure IotHub for anomalies detection. I've been able to import my data from CVS file into Node-red and I've been able to display the data sequentially with del…

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## [Deep Copy of Arrays and Objects using RED.util.cloneMessage()](https://discourse.nodered.org/t/deep-copy-of-arrays-and-objects-using-red-util-clonemessage/29040)

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**Author:** [@tmichaeltx](https://discourse.nodered.org/u/tmichaeltx)\
**Replies:** 3\
**Last updated:** [28 June 2020 01:04 UTC](https://discourse.nodered.org/t/deep-copy-of-arrays-and-objects-using-red-util-clonemessage/29040 "2020-06-28T01:04:16Z")

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Having opened my eyes to the need to be very intentional on if I am using a copy of a msg or a reference to the message, I have started using RED.util.cloneMessage() when I need a copy to manipulate that won't maninpulat…

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## [While starting node-red getting exception in ubuntu snappy](https://discourse.nodered.org/t/while-starting-node-red-getting-exception-in-ubuntu-snappy/16682)

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**Author:** [@VIKRAMAS](https://discourse.nodered.org/u/VIKRAMAS)\
**Replies:** 14\
**Last updated:** [27 June 2020 21:43 UTC](https://discourse.nodered.org/t/while-starting-node-red-getting-exception-in-ubuntu-snappy/16682 "2020-06-27T21:43:16Z")

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In ubuntu snappy OS I have installed the node-red but while starting I'm getting exception like: Oct 14 10:12:23 admin node-red.node-red\[3741\]: Welcome to Node-RED Oct 14 10:12:23 admin node-red.node-red\[3741\]: ========…

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## [Creating a node for sending / receiving data via sound card!](https://discourse.nodered.org/t/creating-a-node-for-sending-receiving-data-via-sound-card/28399)

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**Author:** [@lizzardguki](https://discourse.nodered.org/u/lizzardguki)\
**Replies:** 50\
**Last updated:** [27 June 2020 21:43 UTC](https://discourse.nodered.org/t/creating-a-node-for-sending-receiving-data-via-sound-card/28399 "2020-06-27T21:43:04Z")

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Hello fellow members, after the whole night of thinking, first I want to thank @cinhcent for explaining to me why Quiet-bundle won\`t work for this node! Node idea: The nodes should function exactly like this webpage! …

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## [Check out the last two minutes](https://discourse.nodered.org/t/check-out-the-last-two-minutes/29036)

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**Author:** [@Hasan90](https://discourse.nodered.org/u/Hasan90)\
**Replies:** 6\
**Last updated:** [27 June 2020 20:08 UTC](https://discourse.nodered.org/t/check-out-the-last-two-minutes/29036 "2020-06-27T20:08:47Z")

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Hi, At a certain point in my flow and Code, I would like to know if the machine is working for the last two minutes or not I have Machine status tag: 1=OFF 0=ON how can I do that?

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## [Filter for Payload message](https://discourse.nodered.org/t/filter-for-payload-message/29067)

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**Author:** [@Flixm](https://discourse.nodered.org/u/Flixm)\
**Replies:** 5\
**Last updated:** [27 June 2020 19:35 UTC](https://discourse.nodered.org/t/filter-for-payload-message/29067 "2020-06-27T19:35:15Z")

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Hi, i need some help to filter only the "illuminance\_lux":xxx value. the message that i receive looks like this: payload: "illuminance":20935,"illuminance\_lux":123,"linkquality":0,"battery":100,"voltage":3100}" and i…

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## [Should the node-red install script not handle upgrade of node.js from ARM v6 to ARM v7 instruction set?](https://discourse.nodered.org/t/should-the-node-red-install-script-not-handle-upgrade-of-node-js-from-arm-v6-to-arm-v7-instruction-set/29076)

<div class="topic-metadata">

**Author:** [@Nodi.Rubrum](https://discourse.nodered.org/u/Nodi.Rubrum)\
**Replies:** 4\
**Last updated:** [27 June 2020 18:35 UTC](https://discourse.nodered.org/t/should-the-node-red-install-script-not-handle-upgrade-of-node-js-from-arm-v6-to-arm-v7-instruction-set/29076 "2020-06-27T18:35:42Z")

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Should the node-red install script not handle upgrade of node.js from ARM v6 to ARM v7? I was expecting this to be the case, but if not just want to confirm the behavior I have seen. Installed node-red on ARM v6 based…

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## [Is the following web page current and correct?](https://discourse.nodered.org/t/is-the-following-web-page-current-and-correct/29049)

<div class="topic-metadata">

**Author:** [@Nodi.Rubrum](https://discourse.nodered.org/u/Nodi.Rubrum)\
**Replies:** 5\
**Last updated:** [27 June 2020 18:33 UTC](https://discourse.nodered.org/t/is-the-following-web-page-current-and-correct/29049 "2020-06-27T18:33:45Z")

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Is the following web page current and correct? Specifically the web page states the 'libs' directory should be backed up, but on my node-red installation I only find a 'lib' directory under .node-red. Is this a typo? …

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## [Completely remove Node-RED](https://discourse.nodered.org/t/completely-remove-node-red/19821)

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**Author:** [@npburns224](https://discourse.nodered.org/u/npburns224)\
**Replies:** 6\
**Last updated:** [27 June 2020 17:04 UTC](https://discourse.nodered.org/t/completely-remove-node-red/19821 "2020-06-27T17:04:10Z")

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I installed Node-RED using this install script and am now looking to remove it from my system: bash \<(curl -sL https://raw.githubusercontent.com/node-red/linux-installers/master/deb/update-nodejs-and-nodered) How wou…

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## [Passing through input message stops join node](https://discourse.nodered.org/t/passing-through-input-message-stops-join-node/28909)

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**Author:** [@element22](https://discourse.nodered.org/u/element22)\
**Replies:** 23\
**Last updated:** [27 June 2020 17:27 UTC](https://discourse.nodered.org/t/passing-through-input-message-stops-join-node/28909 "2020-06-27T17:27:02Z")

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Hello! I was wondering whether anyone could take a look at the below and let me know what I'm doing wrong please? I am using the join node to combine each complete message to create a key/value object. I am sending the…

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## [Looks Like I Broken Node-Red Restoring Flows To Different Instance?](https://discourse.nodered.org/t/looks-like-i-broken-node-red-restoring-flows-to-different-instance/29072)

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**Author:** [@Nodi.Rubrum](https://discourse.nodered.org/u/Nodi.Rubrum)\
**Replies:** 9\
**Last updated:** [27 June 2020 16:44 UTC](https://discourse.nodered.org/t/looks-like-i-broken-node-red-restoring-flows-to-different-instance/29072 "2020-06-27T16:44:17Z")

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Looks like I broken node-red restoring flows to different instance? I backed up the flows on node-red instance A, then restored flows to node-red B. I had already changed the settings.js file to not use hostname as par…

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## [Can't run node-red](https://discourse.nodered.org/t/cant-run-node-red/2019)

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**Author:** [@Uspinhal](https://discourse.nodered.org/u/Uspinhal)\
**Replies:** 39\
**Last updated:** [27 June 2020 16:25 UTC](https://discourse.nodered.org/t/cant-run-node-red/2019 "2020-06-27T16:25:04Z")

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Hi everyone. I'm starting with Node-RED on a RPi 3 running Raspbian Scratch, and I just can't start Node-red. I tried with node-red-start command and with sudo systemctl start nodered.service Both ways return somethin…

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## [Using fs module but it isn't installed!](https://discourse.nodered.org/t/using-fs-module-but-it-isnt-installed/29073)

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**Author:** [@Colin](https://discourse.nodered.org/u/Colin)\
**Replies:** 12\
**Last updated:** [27 June 2020 16:21 UTC](https://discourse.nodered.org/t/using-fs-module-but-it-isnt-installed/29073 "2020-06-27T16:21:37Z")

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In settings.js, functionGlobalContext I have fs: require('fs') and I am able to use it in a function node by: const fs = context.global.fs; then use fs.readdir and it works fine. However when I run, from .node-red d…

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## [Turn on/ off with switch node a zigbee device](https://discourse.nodered.org/t/turn-on-off-with-switch-node-a-zigbee-device/28881)

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**Author:** [@get-command](https://discourse.nodered.org/u/get-command)\
**Replies:** 15\
**Last updated:** [27 June 2020 13:24 UTC](https://discourse.nodered.org/t/turn-on-off-with-switch-node-a-zigbee-device/28881 "2020-06-27T13:24:09Z")

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Hello I need your help again :slight\_smile: I have built e simple flow. Inject-node -\> switch-node -\> Action (e.g. light on/off). this function very well: but i change the nodes lights with a "osram zigbee light", …

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## [Enabling CORS for node-red running on ibm cloud](https://discourse.nodered.org/t/enabling-cors-for-node-red-running-on-ibm-cloud/29077)

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**Author:** [@mst](https://discourse.nodered.org/u/mst)\
**Replies:** 2\
**Last updated:** [27 June 2020 15:59 UTC](https://discourse.nodered.org/t/enabling-cors-for-node-red-running-on-ibm-cloud/29077 "2020-06-27T15:59:07Z")

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Hello , emphasized text have a created node-red flow on IBM cloud lite account.I am using a Visual recognition node in it & displaying its result/ class score in a separate url page- /trp in json format using Now i wa…

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## [How to send acknowledgement in tcp](https://discourse.nodered.org/t/how-to-send-acknowledgement-in-tcp/29074)

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**Author:** [@VIKRAMAS](https://discourse.nodered.org/u/VIKRAMAS)\
**Replies:** 0\
**Last updated:** [27 June 2020 15:29 UTC](https://discourse.nodered.org/t/how-to-send-acknowledgement-in-tcp/29074 "2020-06-27T15:29:06Z")

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I am having three node cluster of node-red and having a tcp listening node. So, whenever the I'll receive the first packet I have to send the acknowledgment message for the socket and also I need to store this deviceid a…

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## [Role based access](https://discourse.nodered.org/t/role-based-access/28666)

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**Author:** [@sarosh](https://discourse.nodered.org/u/sarosh)\
**Replies:** 5\
**Last updated:** [27 June 2020 15:15 UTC](https://discourse.nodered.org/t/role-based-access/28666 "2020-06-27T15:15:14Z")

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Hi, I wanted to know is there Role based access control in node red? Can we give permissions based on user roles?

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## [Easy way of adding only mytimes to a msg](https://discourse.nodered.org/t/easy-way-of-adding-only-mytimes-to-a-msg/28683)

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**Author:** [@cymplecy](https://discourse.nodered.org/u/cymplecy)\
**Replies:** 12\
**Last updated:** [27 June 2020 15:09 UTC](https://discourse.nodered.org/t/easy-way-of-adding-only-mytimes-to-a-msg/28683 "2020-06-27T15:09:23Z")

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The node-red-contrib-simpletime does what its says on the packet and returns the current (DST corrected) time Instead of writing my own boiler plate code to add hh:mm:ss to status/logging messages I'd thought I'd just…

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## [Node-red-contrib i2c : can it work with a i2c-gpio bus?](https://discourse.nodered.org/t/node-red-contrib-i2c-can-it-work-with-a-i2c-gpio-bus/28836)

<div class="topic-metadata">

**Author:** [@nordseele](https://discourse.nodered.org/u/nordseele)\
**Replies:** 11\
**Last updated:** [27 June 2020 10:23 UTC](https://discourse.nodered.org/t/node-red-contrib-i2c-can-it-work-with-a-i2c-gpio-bus/28836 "2020-06-27T10:23:41Z")

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Hi, I understand that the i2c-contrib node doesn't permit the use of another bus than the default one which is /dev/i2c-1 on a Pi3 . This node only works for newer version of Pi where the i2c driver is on /dev/i2c-1, …

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## [Node-red i2c installation error](https://discourse.nodered.org/t/node-red-i2c-installation-error/29005)

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**Author:** [@Hariprabu94](https://discourse.nodered.org/u/Hariprabu94)\
**Replies:** 8\
**Last updated:** [27 June 2020 12:16 UTC](https://discourse.nodered.org/t/node-red-i2c-installation-error/29005 "2020-06-27T12:16:23Z")

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Hi, i tried to install i2c bus through node-red dashboard and npm command. But am getting error with installation. Kindly assist Thank you.

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## [Correct the values of a measurement](https://discourse.nodered.org/t/correct-the-values-of-a-measurement/29045)

<div class="topic-metadata">

**Author:** [@volker1078](https://discourse.nodered.org/u/volker1078)\
**Replies:** 5\
**Last updated:** [27 June 2020 10:01 UTC](https://discourse.nodered.org/t/correct-the-values-of-a-measurement/29045 "2020-06-27T10:01:53Z")

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Hello, I built a measuring device with which I can measure the insulation in MOhm. Up to a value of 10MOhm, the device is very precise, the only way to make it more and more inaccurate. from a measured value of 10, the …

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## [Problems creating the password hash](https://discourse.nodered.org/t/problems-creating-the-password-hash/29050)

<div class="topic-metadata">

**Author:** [@Joaovitor](https://discourse.nodered.org/u/Joaovitor)\
**Replies:** 1\
**Last updated:** [27 June 2020 06:19 UTC](https://discourse.nodered.org/t/problems-creating-the-password-hash/29050 "2020-06-27T06:19:21Z")

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Well, I followed the instructions and installed the node-RED administrator. I'm running it on the windows 10 CMD. The problem is this: when I request a password hash by the command "node-red-admin hash-pw" a gap to ent…

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## [Raspberry Pi Email Notifications](https://discourse.nodered.org/t/raspberry-pi-email-notifications/14862)

<div class="topic-metadata">

**Author:** [@MNiehaus](https://discourse.nodered.org/u/MNiehaus)\
**Replies:** 11\
**Last updated:** [27 June 2020 05:50 UTC](https://discourse.nodered.org/t/raspberry-pi-email-notifications/14862 "2020-06-27T05:50:30Z")

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Hi guys.. I need some help. I'm pretty new to Node-RED. I watched a tutorial on "sending Email using Node-RED" on youtube. Thats the eaxt title if you are interested. I set it up exactly how the tutorial described, but I…

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## [Updating to PowerShell v7 (slightly offtopic perhaps)](https://discourse.nodered.org/t/updating-to-powershell-v7-slightly-offtopic-perhaps/29034)

<div class="topic-metadata">

**Author:** [@TotallyInformation](https://discourse.nodered.org/u/TotallyInformation)\
**Replies:** 1\
**Last updated:** [27 June 2020 04:19 UTC](https://discourse.nodered.org/t/updating-to-powershell-v7-slightly-offtopic-perhaps/29034 "2020-06-27T04:19:50Z")

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As I've only just got round to looking at this myself (thanks to a bunch of senior people not attending a project meeting - a sternly worded email is on its way!), I thought I'd just let people know about PowerShell v7 s…

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