Lost with Node Red in QIOT

QIoT technology to allow you to explore potential IoT business opportunities.
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Lost with Node Red in QIOT

Post by andres_dans » Mon Jul 30, 2018 5:01 am

Sorry for my dumb question, but I am playing around with the node-red in QIOT, but struggling to get some functionality.
I have an ESP8622 with a SHT22 sending temp an humidity to the MQTT server.
I am able to show data in the QIOT dashboard node (1)
but when trying to use the other nodes (3) (gauge, graph, etc), first they do not appear in the QNAP dashboard
Then, when pading the data to the NodeRED gauge, I am able to see it in the NodeRed dashboard, but without reacting to the date received
It is also strangem, that I have two tabs in the NodeRed Dashborad (Tempp and HUmm) but only the first tab is shown

Is this a limitation of the Qiot? or I am doing somthing wrong?

Thanks for your feedback.


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Re: Lost with Node Red in QIOT

Post by timhsu » Thu Aug 02, 2018 11:18 am

Hi andres_dans

QNAP Dashboard is different to Node-red Dashboard. QNAP Dashboard use "QDashboard node". Node-red Dashboard use "Dashboard" group node.
And QDashboard message use "msg.payload.value", but Node-red Dashboard message use "msg.payload". Then "QBroker in" message is in "msg.payload.value", so if you use "Node-red Dashboard" you need to change payload place. like using function node :"msg.payload = msg.payload.value;".

You can reference this IoT Application, download this export sample file and import it : https://raw.githubusercontent.com/black ... inbox.json
How to import you can reference this : https://www.qnap.com/en/how-to/tutorial ... suite-lite

Thank you.

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Re: Lost with Node Red in QIOT

Post by K0ertis » Thu Feb 07, 2019 4:40 am


I am also lost with QIOT, i store data in QHistoryData and want to load the data and plot with a chart. But the online tutorials do not work for me and the data will not show up in the chart.
I get the data from Mqtt and can plot them as you mentioned the data needs to decoded and that works great. I just cant get stored data to show in a chart.

Thank you!

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Re: Lost with Node Red in QIOT

Post by andersoncheng » Tue Feb 12, 2019 9:43 am

maybe the payload format ?

{"value":"10"}, 10 will be string, won't show data in the chart

{"value": 10} is ok

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