AWS Tutorials - Programming with AWS IoT Device Shadow Service

A device shadow is a JSON document that is used to store and retrieve device state information. The device shadow is associated with AWS IoT thing object. Any application or service which wants to know the device state; can access the device shadow irrespective whether the device is connected to AWS IoT or not. Shadow communications can primarily happen in two ways – MQTT Messages and API.

In this video, you learn to build an application in Microsoft c# which is used to talk to AWS IoT Device Shadow Service using IoT Data APIs.

[abhilashsingh]

Thank you for making or uploading AWS IOT series.
Request you please make video on Lambda with AWS IOT or make more videos on AWS IOT.

[abeehahussain]

Thank you very much for uploading this tutorial

[jarogregan]

you made a small mistake in your code.. in UpdateShadowClick method.. see footage 26:12.. you assigned req.ShadowName a value of: DEVICE_NAME instead of DEVICE_SHADOW_NAME.. this is the reason why you experienced issue with wrong shadow name in method getShadowClick.. otherwise great video.. thank you

[alagarasanr]

Thank you for your tutorial is great. Its any possible any intimation if device goes offline

[rafaelramirez]

Thank you for your tutorial... Can you show us how to change the shadow from lambda function with python? Best Regards.

[abeehahussain]

if we use certificate for things then we should need to upload these certificate in C# code to interact with device shadow ?

[abeehahussain]

without creating profile of amazon on visual studio can we create project that interact with device shadow? if no then can we publish this app for users to use it "that is created by our amazon profile account"?

[senudajayalath]

can you please do a vedio on how to connect to aws shadow from node js

[vikaskumar-ewwi]

Why it is showing device shadow state error

[satish]

Hi,


I have the following questions (Very Fundamental questions)



In the real world scenario, there will be millions of devices. All the devices will communicate with the IOT Gateway.



1. Who will create these Things in the aws. We created manually here for one thing. But if we have 1 million devices how to ceate so many devices in aws



2. I create a thing called "MyThing55_Shadow" as a result of this, i got topics like this and other topics.

In the real world, how will the device (like a bulb, a fan) knows that it has to connect with the topic
?



3. The Things are aware only to aws, but how devices will know which topics to connect with ? (For publishing and Subscrption)





Thanks



Satish