# Latest

**URL:** https://discourse.nodered.org/latest.md?page=1223

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

**Page:** 1224

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## [If I start node-red in safe mode, how do I stop it?](https://discourse.nodered.org/t/if-i-start-node-red-in-safe-mode-how-do-i-stop-it/16046)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 0\
**Last updated:** [29 September 2019 08:51 UTC](https://discourse.nodered.org/t/if-i-start-node-red-in-safe-mode-how-do-i-stop-it/16046 "2019-09-29T08:51:03Z")

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Something weird has happened - but for me that is normal. I've rolled back to a "last working" flow set. I'm starting in safe mode only as a precaution. I start node-red in safe mode. node-red --safe It loads and I …

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## [SNMP-set node issue](https://discourse.nodered.org/t/snmp-set-node-issue/16028)

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**Author:** [@kresten88](https://discourse.nodered.org/u/kresten88)\
**Replies:** 4\
**Last updated:** [29 September 2019 07:45 UTC](https://discourse.nodered.org/t/snmp-set-node-issue/16028 "2019-09-29T07:45:40Z")

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For some reason, which I cannot find, an SNMP set from a simple dropdown list works perfect. The same does not work when I use a dropdown list with data from a DBquery. Here is the working debug msg after my function (…

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## [\[Announce\] uibuilder v2.0.4 published](https://discourse.nodered.org/t/announce-uibuilder-v2-0-4-published/16040)

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**Author:** [@TotallyInformation](https://discourse.nodered.org/u/TotallyInformation)\
**Replies:** 0\
**Last updated:** [28 September 2019 22:43 UTC](https://discourse.nodered.org/t/announce-uibuilder-v2-0-4-published/16040 "2019-09-28T22:43:52Z")

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2.0.4 - 2019-09-28 Added uib icon (blue node-red icon) to the detailed information page (uibindex) & logo to README Look for the package.json browser property not just main and display it on the uibuindex page if a…

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## [Node-RED version string from within a custom node](https://discourse.nodered.org/t/node-red-version-string-from-within-a-custom-node/16033)

<div class="topic-metadata">

**Author:** [@TotallyInformation](https://discourse.nodered.org/u/TotallyInformation)\
**Replies:** 2\
**Last updated:** [28 September 2019 21:04 UTC](https://discourse.nodered.org/t/node-red-version-string-from-within-a-custom-node/16033 "2019-09-28T21:04:20Z")

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Hi all, Does anyone know of a way to get hold of the Node-RED version string from within a custom node? e.g. something on the RED object or an API call? I want to pass it through to an API that uibuilder sets up that d…

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## [Create SteppedLine Chart for digital data](https://discourse.nodered.org/t/create-steppedline-chart-for-digital-data/15996)

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**Author:** [@thomaspz](https://discourse.nodered.org/u/thomaspz)\
**Replies:** 2\
**Last updated:** [28 September 2019 11:55 UTC](https://discourse.nodered.org/t/create-steppedline-chart-for-digital-data/15996 "2019-09-28T11:55:16Z")

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Is there a way to set the chart.js option "steppedLine" to the dashboard graph, to view digital data. I tried it like this with a line chart, but I have to set the steppedLine Option, to view it like "real" digital data…

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## [Can I add a pop-ups related to a specific workflow tab when push a button on the navigator?](https://discourse.nodered.org/t/can-i-add-a-pop-ups-related-to-a-specific-workflow-tab-when-push-a-button-on-the-navigator/16021)

<div class="topic-metadata">

**Author:** [@HannanKan](https://discourse.nodered.org/u/HannanKan)\
**Replies:** 5\
**Last updated:** [28 September 2019 10:42 UTC](https://discourse.nodered.org/t/can-i-add-a-pop-ups-related-to-a-specific-workflow-tab-when-push-a-button-on-the-navigator/16021 "2019-09-28T10:42:19Z")

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As you can see in the question, I want to I want to add a button on the navigator of nodered I want to add a pop-ups when I push the button.

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## [Emotiv with node red](https://discourse.nodered.org/t/emotiv-with-node-red/16005)

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**Author:** [@ferasj22](https://discourse.nodered.org/u/ferasj22)\
**Replies:** 5\
**Last updated:** [28 September 2019 00:15 UTC](https://discourse.nodered.org/t/emotiv-with-node-red/16005 "2019-09-28T00:15:19Z")

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My project is using the Emotiv Epoc+ 14 channel headset to detect the EEG signals (brain signals) and send it to the node-RED. Then, the EEG signals will be sent to the Arduino board to control the motion of the robot. …

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## [Knowing when a node is done - new node API](https://discourse.nodered.org/t/knowing-when-a-node-is-done-new-node-api/15737)

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**Author:** [@knolleary](https://discourse.nodered.org/u/knolleary)\
**Replies:** 12\
**Last updated:** [27 September 2019 22:36 UTC](https://discourse.nodered.org/t/knowing-when-a-node-is-done-new-node-api/15737 "2019-09-27T22:36:53Z")

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If you have created your own nodes, there's a new callback function signature being introduced in Node-RED 1.0 that will allow the runtime to keep better track of when nodes are done with a message. This is what drives …

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## [\_msgid being saved to object in context](https://discourse.nodered.org/t/msgid-being-saved-to-object-in-context/16016)

<div class="topic-metadata">

**Author:** [@m\_elias](https://discourse.nodered.org/u/m_elias)\
**Replies:** 4\
**Last updated:** [27 September 2019 21:31 UTC](https://discourse.nodered.org/t/msgid-being-saved-to-object-in-context/16016 "2019-09-27T21:31:48Z")

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I have a simple inject-\>function flow to recreate an object in the flow context for when I mess it up in my other flows. For some reason, it saves a \_msgid to that object. It's the same \_msgid as the function node automa…

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## [Nicedevil's Starting Questions](https://discourse.nodered.org/t/nicedevils-starting-questions/14454)

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**Author:** [@nicedevil](https://discourse.nodered.org/u/nicedevil)\
**Replies:** 95\
**Last updated:** [27 September 2019 20:26 UTC](https://discourse.nodered.org/t/nicedevils-starting-questions/14454 "2019-09-27T20:26:02Z")

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Hey guys, I started with my homeautomation just today. My Node-Red is up and running and I did a few basic stuffs. Now I have a little problem where I don't know what I have to google for. Tryed out something like this…

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## [Error detecting really not "working"](https://discourse.nodered.org/t/error-detecting-really-not-working/15994)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 8\
**Last updated:** [27 September 2019 16:29 UTC](https://discourse.nodered.org/t/error-detecting-really-not-working/15994 "2019-09-27T16:29:09Z")

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Sorry folks, but I really am stuck with what is going on with error trapping. To the best of my knowledge things are ok as they were. Me, every wanting to stir the hornet's nest, I am trying to make the flow better. T…

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## [Can you assign a base http path context to a project?](https://discourse.nodered.org/t/can-you-assign-a-base-http-path-context-to-a-project/15983)

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**Author:** [@johnlongo](https://discourse.nodered.org/u/johnlongo)\
**Replies:** 3\
**Last updated:** [27 September 2019 15:14 UTC](https://discourse.nodered.org/t/can-you-assign-a-base-http-path-context-to-a-project/15983 "2019-09-27T15:14:32Z")

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Was wondering if you can assign a base http path context to a project. Example: project 1 http path starts with "/path1/" project 2 http path starts with "/path2/" so when I make a http request to http://node-red-hos…

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## [\[SOLVED\] Node-red-contrib-mssql-plus](https://discourse.nodered.org/t/solved-node-red-contrib-mssql-plus/15956)

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**Author:** [@Francesco](https://discourse.nodered.org/u/Francesco)\
**Replies:** 6\
**Last updated:** [27 September 2019 13:49 UTC](https://discourse.nodered.org/t/solved-node-red-contrib-mssql-plus/15956 "2019-09-27T13:49:30Z")

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Hi all. I have problems connecting to a mssql database. I'm using the following node "node-red-contrib-mssql-plus 0.30". The db is accessible with other programs and when I try to run a query I get this error: {"\_msg…

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## [Install node-red 1.0. on new pi](https://discourse.nodered.org/t/install-node-red-1-0-on-new-pi/15998)

<div class="topic-metadata">

**Author:** [@Dave](https://discourse.nodered.org/u/Dave)\
**Replies:** 2\
**Last updated:** [27 September 2019 13:07 UTC](https://discourse.nodered.org/t/install-node-red-1-0-on-new-pi/15998 "2019-09-27T13:07:10Z")

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I am installing to a new raspberry pi I read to install nr 1.0. use sudo npm install -g --unsafe-perm node-red@next but is that to upgrade from say 0.20.7 do I need to use bash \<(curl -sL https://raw.githubuserc…

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## [Alexa... Turn on Christmas (Neopixels) \<\< revisited](https://discourse.nodered.org/t/alexa-turn-on-christmas-neopixels-revisited/15786)

<div class="topic-metadata">

**Author:** [@dynamicdave](https://discourse.nodered.org/u/dynamicdave)\
**Replies:** 0\
**Last updated:** [22 September 2019 17:07 UTC](https://discourse.nodered.org/t/alexa-turn-on-christmas-neopixels-revisited/15786 "2019-09-22T17:07:26Z")

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One of my IoT students has been working on controlling a strip of Neopixels using Alexa. It basically takes some parts from the projects: Controlling a Neopixel strip Alexa... turn on Christmas Then joins them togeth…

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## [Hik Camera Node](https://discourse.nodered.org/t/hik-camera-node/15989)

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**Author:** [@ChrisO](https://discourse.nodered.org/u/ChrisO)\
**Replies:** 4\
**Last updated:** [27 September 2019 12:46 UTC](https://discourse.nodered.org/t/hik-camera-node/15989 "2019-09-27T12:46:31Z")

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We have a HIK IP Camera at work, and I have found https://flows.nodered.org/node/node-red-contrib-hikcamera. But there isn't a great deal of info with it. Would anyone have any examples of how to use it. I have suppli…

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## [Node-Red scalability ](https://discourse.nodered.org/t/node-red-scalability/15938)

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**Author:** [@khalilx3](https://discourse.nodered.org/u/khalilx3)\
**Replies:** 7\
**Last updated:** [27 September 2019 11:41 UTC](https://discourse.nodered.org/t/node-red-scalability/15938 "2019-09-27T11:41:08Z")

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Hello guys ! I'm working on an IoT project, and i'm planning to use NODE-RED for prototyping. But i think thad with Node-Red, I would be limited in scalability for my testing. What do you guys think about it ? Did you…

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## [Email multiple files as attachments dynamically in email node](https://discourse.nodered.org/t/email-multiple-files-as-attachments-dynamically-in-email-node/15968)

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**Author:** [@bmansour](https://discourse.nodered.org/u/bmansour)\
**Replies:** 9\
**Last updated:** [27 September 2019 10:56 UTC](https://discourse.nodered.org/t/email-multiple-files-as-attachments-dynamically-in-email-node/15968 "2019-09-27T10:56:02Z")

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Hi guys, quick one I'm trying to send more than one file as attachements using the email node. This is how I was doing it and working well. const date = new Date(msg.payload) return { topic: 'Daily reports: ' + dat…

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## [Machine with Node-Red custom UI \[Dashboard template\]](https://discourse.nodered.org/t/machine-with-node-red-custom-ui-dashboard-template/15946)

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**Author:** [@josemansilva22](https://discourse.nodered.org/u/josemansilva22)\
**Replies:** 2\
**Last updated:** [27 September 2019 10:07 UTC](https://discourse.nodered.org/t/machine-with-node-red-custom-ui-dashboard-template/15946 "2019-09-27T10:07:35Z")

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Hi everyone, I discovered Node-Red a few months ago and I just love it, this was the first project, a machine with an interactive look all made in node-red, hope you like it

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## [Serialport issue](https://discourse.nodered.org/t/serialport-issue/15980)

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**Author:** [@ndex11](https://discourse.nodered.org/u/ndex11)\
**Replies:** 2\
**Last updated:** [27 September 2019 08:15 UTC](https://discourse.nodered.org/t/serialport-issue/15980 "2019-09-27T08:15:54Z")

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Hi, I am trying to read data from serial port with no luck. I am using USB/Serial converter with pl2303 and I shorted RX TX pins so I can write data to the serial port from nodered and then read them from Linux console w…

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## [Input payload to node properties](https://discourse.nodered.org/t/input-payload-to-node-properties/15972)

<div class="topic-metadata">

**Author:** [@Veloruze](https://discourse.nodered.org/u/Veloruze)\
**Replies:** 3\
**Last updated:** [27 September 2019 07:45 UTC](https://discourse.nodered.org/t/input-payload-to-node-properties/15972 "2019-09-27T07:45:50Z")

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i've payload and what i want is to input it to the node properties. But from this node there is no information on how to enter the payload as input. is there any solution ?

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## [How to update value of a field for all page in AEM?](https://discourse.nodered.org/t/how-to-update-value-of-a-field-for-all-page-in-aem/15978)

<div class="topic-metadata">

**Author:** [@priyankamakke](https://discourse.nodered.org/u/priyankamakke)\
**Replies:** 2\
**Last updated:** [27 September 2019 07:43 UTC](https://discourse.nodered.org/t/how-to-update-value-of-a-field-for-all-page-in-aem/15978 "2019-09-27T07:43:02Z")

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I create a site with AEM (Adobe Experience Manager Training). I have a page type as property-page. The property-page have a field type "Number of the event in a page". I want to modify the number of the event for all pro…

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## [Populate data from database into Dropdownlist](https://discourse.nodered.org/t/populate-data-from-database-into-dropdownlist/15944)

<div class="topic-metadata">

**Author:** [@kresten88](https://discourse.nodered.org/u/kresten88)\
**Replies:** 8\
**Last updated:** [27 September 2019 07:14 UTC](https://discourse.nodered.org/t/populate-data-from-database-into-dropdownlist/15944 "2019-09-27T07:14:31Z")

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When I use a Query on Mysql I get an array with 120 objects. I would like to push these results in a dropdownlist, but all I know is how to write a function to get 1 value out of the array, not all of them. So first st…

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## [How to change the ip address](https://discourse.nodered.org/t/how-to-change-the-ip-address/15974)

<div class="topic-metadata">

**Author:** [@Benix](https://discourse.nodered.org/u/Benix)\
**Replies:** 2\
**Last updated:** [27 September 2019 07:01 UTC](https://discourse.nodered.org/t/how-to-change-the-ip-address/15974 "2019-09-27T07:01:32Z")

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now i have 192.168.4.32 to open node red .. i want to change that to 192.168.4.28... how do i change

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## [Set Hex Value in a Change Node](https://discourse.nodered.org/t/set-hex-value-in-a-change-node/15917)

<div class="topic-metadata">

**Author:** [@dudleyjosh](https://discourse.nodered.org/u/dudleyjosh)\
**Replies:** 4\
**Last updated:** [27 September 2019 01:08 UTC](https://discourse.nodered.org/t/set-hex-value-in-a-change-node/15917 "2019-09-27T01:08:03Z")

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If need to send the hex value of 0x18 to a serial port node, what is the proper way to do it using a Change node? I've found that is can be done using the following string "\\u0018" within a JSONata expression field (I do…

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## [Import rules by rest api](https://discourse.nodered.org/t/import-rules-by-rest-api/15855)

<div class="topic-metadata">

**Author:** [@chandra123](https://discourse.nodered.org/u/chandra123)\
**Replies:** 14\
**Last updated:** [26 September 2019 20:15 UTC](https://discourse.nodered.org/t/import-rules-by-rest-api/15855 "2019-09-26T20:15:10Z")

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Hi, I have multiple wind turbines which are publishing data on multiple mqtt topics and using function node I am able to apply rules to filter that data and again publishing that filtered data on different mqtt topics i…

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## [Dynamically change chart x-axis based on data](https://discourse.nodered.org/t/dynamically-change-chart-x-axis-based-on-data/15948)

<div class="topic-metadata">

**Author:** [@davebanthorpe](https://discourse.nodered.org/u/davebanthorpe)\
**Replies:** 2\
**Last updated:** [26 September 2019 18:02 UTC](https://discourse.nodered.org/t/dynamically-change-chart-x-axis-based-on-data/15948 "2019-09-26T18:02:06Z")

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Hi - I'm currently generating a line chart based on data returned from a mySQL query. Since I know what the timespan is for the data returned (due to the query) I want to dynamically change the x-axis timespan of the cha…

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## [How can I print a pdf from Dashboard?](https://discourse.nodered.org/t/how-can-i-print-a-pdf-from-dashboard/10332)

<div class="topic-metadata">

**Author:** [@bruster999](https://discourse.nodered.org/u/bruster999)\
**Replies:** 2\
**Last updated:** [26 September 2019 17:44 UTC](https://discourse.nodered.org/t/how-can-i-print-a-pdf-from-dashboard/10332 "2019-09-26T17:44:32Z")

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Hi all. I use node-red/Dashboard along with several ESP8266 devices to automate several machines in my business. I would like to be able to give employees the ability to print forms/documents in either PDF or MS Word for…

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## [Change javascript code in function node](https://discourse.nodered.org/t/change-javascript-code-in-function-node/15891)

<div class="topic-metadata">

**Author:** [@chandra123](https://discourse.nodered.org/u/chandra123)\
**Replies:** 12\
**Last updated:** [26 September 2019 17:41 UTC](https://discourse.nodered.org/t/change-javascript-code-in-function-node/15891 "2019-09-26T17:41:00Z")

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Can we change Javascript code or rule written in function by external code or rule? by rest-api or something else

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## [Msg.payload Tinkerforge Dashboard](https://discourse.nodered.org/t/msg-payload-tinkerforge-dashboard/15959)

<div class="topic-metadata">

**Author:** [@Manu](https://discourse.nodered.org/u/Manu)\
**Replies:** 2\
**Last updated:** [26 September 2019 17:39 UTC](https://discourse.nodered.org/t/msg-payload-tinkerforge-dashboard/15959 "2019-09-26T17:39:26Z")

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Hello everybody, i am new here and a total beginner and not so good in English. I have a Tinkerforge HAT-Zero. And can, for example, receive the voltage as an answer about MQTT. My answer comes as "msg.payload" (Object…

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