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Netduino 3 Wifi Azure Event Hub Client

Azure EventHub Wifi Netduino

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#1 KiwiDev


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Posted 03 May 2015 - 05:37 AM

Hi all,


I do a bit of Azure IoT dev and wanted to see how easy it would be to get a N3 uploading data to a Microsoft Azure Event Hub.


My Arduino & Netduino 2 Plus devices can't do https so I had built a lightweight field gateway (a self installing windows service) to upload data from sensors around my home.


An Azure Event hub can cope with millions of events per second so I figured my single device with a couple of DS18B20 temperature sensors, uploading every 15 sec shouldn't be a problem.


The N3 uses a TI CC3100 wifi module which has on board SSL 3.0 and TLS 1.2 so I was hoping this would be more reliable than the native NetMF SSL stack.(I had  problems with a memory leak)


So far things are looking positive, the N3 has been running for a couple of days and recovered gracefully from brief connectivity dropouts.


Have a look at the blog posting which has the code etc. 



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#2 Chris Walker

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Posted 03 May 2015 - 05:41 AM

Very cool, Bryn. I can't wait to see more of what you come up with for your shiny new Azure-enabled mainboard!

Do you have any screenshots of the uploaded data, etc.? I'd love to see how you're using the data.


P.S. Thank you again for all your pre-release testing of our new networking stack on Netduino 3 Wi-Fi. You're awesome.

#3 KiwiDev


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Posted 03 May 2015 - 06:13 AM

Hi Chris,


Currently, I'm using the excellent ServiceBus Explorer from Paolo Salvatori  to view the event hub data.


Hopefully, later this week I'll start streaming the temperature data into Azure Machine Learning to see what it makes of it.


I have also got some Azure ServiceBus queue code which I'll get going on the N3 when I get some time.


Have also got a blog post about N3 xively https connectivity half written. (Direct and a modified version of an nrf24l01 gateway I built last year for connecting devDuino devices)


Looks like I now need to buy some more N3 devices so I can soak test connectivity and try out some of my other ideas.




P.S. Thanks for letting me join the preview.

Also tagged with one or more of these keywords: Azure, EventHub, Wifi, Netduino

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