The concept of the Internet of things associates with two areas: the cloud and devices. And if you can easily find many articles about clouds, you will not find a lot of information about devices in this concept. We will talk about "things" in IoT. What is it, what do they do, what inside of it and how do they work.

1. The «Things»
of «Internet of Things»
Alexandr Surkov,
Microsoft MVP, Moscow IoT Community Leader
Alexander
Surkov

2. What is the Internet of Things?
The Concept of computing network of physical devices
(«things»), equipped with build-in technologies for
interaction with each other or with the external environment.
This concept is considering the organization of such networks
as a phenomenon that can significantly change economic
and social processes.
The term and concept appeared in 1999.

3. Interest in "Internet of Things"

4. Count of connected devices

5. 50 billion devices in 2020
What are these devices?
•«Informational» devices
•«Special» devices

6. «Informational» devices
•Devices for interacting with peoples
•Peoples can understand when something goes wrong
•The main risk is loss of money

7. «Special» devices
•Single-purpose, cheap and «weak»
•Automation of routine work
•Autonomous work
•Can’t determine whether they are cracked or not
•Material risks: fires, explosions, etc.

8. How does it work?

9. Data exchange types
•Telemetry: Service <- Device
•Queries: Service <-> Device
•Commands: Service <-> Device
•Notifications: Service -> Device

10. Network of devices
•Routing and addressing
•Roaming and mobile devices
•Battery power supply
•Integrity, immutability and authenticity
•Scaling

11. Architecture

12. Sensors
Analog of human feelings and even more
•Smell - gas sensor
•Distance - rangefinders
•Speed and position - GPS, accelerometers
•Weather - pressure, temperature, humidity, etc.
•Physical values - current, voltage, etc.

13. Actuators
Control devices
•Drives
•Relay
•LED
•Screens

14. Where are these «things»?
•In most case sensors already exists. You need
only connect them to the cloud.
•There are a lot of ready to use solutions.
•Create of your own device.

15. What is inside of these “things”?

16. Microcontrollers
•Microprocessor-computing
•Microcontroller - control

17. Microcontrollers

18. Microcontrollers
Microcontroller
Core Микропроцессор
Periphery
RAM Flash
General purpose I/O
I2C SPI
CAN UART
USB ADCDAC
LCD Controller
Ethernet Controller
…

19. Microcontrollers

20. Cortex M

21. Where they are used?

22. How to work with them
•Eclipse
•Keil uVision
•IAR
•Atmel Studio
•Many others

23. How to work with them

24. IDE

25. IDE Features
•Firmware downloading
•Real time debugging
•Special visual debugging tools

26. Develop process
•Not many functions
•Complex branched algorithms
•Implementation of multiple protocols
•Memory and speed limits

27. Problems
•Version control (Git, TFS)
•Code analyzer (ReSharper)
•Autocomplete (IntelliSense)
•Convenience and stability of the IDE
•Lack of code testing tools

28. Typical errors
•Asynchronous periphery
•Impact of interrupts
•Resource limits
•Copy - Paste

29. How to test
•Testing while develop
•Checking the functions of the finished device
•Software emulators
•Test stands
•Production stands

30. Test stand

31. Do you want to know more about Internet of Things?
Join us!
IoT Community:
•https://www.facebook.com/groups/RU.IoT.Community/
•http://vk.com/iot_community
•https://www.meetup.com/IoTCommunity/

32. The«Things» of «Internet of Things»
Alexandr Surkov,
Microsoft MVP, Moscow IoT Community Leader
@AOSurkov