Build IoT Applications with C#
- 1. Building IoT Applications with C# CHICAGO C# WEB DEVELOPER’S GROUP APRIL 25, 2019 PRESENTED BY KEN SAMSON
- 2. A little about me… • Profession Job – Build Web Applications for the University of Chicago, Department of Medicine • Working with IoT devices as a hobby. • Mostly worked on Raspberry Pi and Arduino boards • How to find me: • LinkedIn : https://www.linkedin.com/in/kenssamson/ • Twitter : https://twitter.com/kenssamson • GitHub : https://github.com/kenssamson
- 3. What is IoT?
- 4. A Brief History… • In 1982, Students at Carnegie Mellon University invent the ARPANET-connected Coke Machine • In 1999, term “Internet of Things” introduced by Kevin Ashton while working at Proctor & Gamble • In 2008, the Internet has more “things” than people connected • By 2014, the number of devices exceeds the world population • Also in 2014, IoT is the main theme at the CES Conference
- 5. What are the Characteristics of IoT Devices A Unique Identifier Wireless communications + The ability to sense or measure something + Embedded electronics +
- 6. What is IoT?
- 8. Early IoT Boards • Built for a Specific Purpose • Built for Professional’s • Required Custom Development Kits • Were relatively expensive
- 9. Arduino • First introduced in 2005 to help student learn about electronics and microcontroller programming • Design and Software are Open-Source • Relatively inexpensive compared to other microcontroller platforms with most boards costing less than $50 • IDE used to build “sketches” runs on Windows, Macintosh, and Linux • No OS on boards – sketch is downloaded to board • Most boards use an Atmel 8-bit AVR Microcontroller
- 10. ARDUINO BOARDS
- 11. ADAFRUIT FEATHER BOARDS – ALSO ARDUINO BOARDS • Same Layout as Arduino Micro/Nano • Same Family of Processors • Same Build Environment
- 12. Raspberry Pi • Designed by the Raspberry Pi Foundation, a charitable organization in England whose goal is to increase interest in Computer Science and related disciplines • Boards cost around $25 to $35, initial sales began Feb 2012 • Series of small single-board computers that use Broadcom ARM 32bit/64bit microprocessors • Various OS’s work on the Pi – including Window 10 IOT and multiple Linux builds • Default OS, called Raspbian, is based on Debian
- 13. RASPBERRY PI FAMILY OF BOARDS
- 14. COMPUTE MODULE IO BOARD
- 15. COMPUTE MODULE IO BOARD PLUS
- 16. Arduino versus Raspberry PI ARDUINO • Use Atmel 8-bit AVR Microcontroller • No OS • Single Application • C/C++ • Very Limited C# Support RASPBERRY PI • Use Broadcom 32-bit / 64-bit ARM Microcontroller • Supports Linux, Windows IOT • Multiple Applications • C/C++ and Python • Supports Java, Perl, Ruby, Nodes, C#, and More
- 18. Arduino Program Structure Main Program Board Bootloader <Project Name>.ino void setup() { // put your setup code here, to run once: } void loop() { // put your main code here, to run repeatedly: }
- 19. ARDUINO SAMPLE Adafruit AdaBox002 – Making Things Move – Feather Bluetooth LE Mini Robot
- 21. Raspberry PI Programming Basics • Default OS is called Raspbian, it is based on Debian 9 (Stretch) using the 32-bit ARM build. • Basic Understanding of Linux is Useful • Limited Processor, Memory, and Space • 1.4 GHz quad-core ARM Cortex-A53 CPU (running in 32bit mode) • 1GB or RAM / USB 2.0 • Micro SD Card contains all software (backup regularly) • 3.3v / 5v limit
- 23. Using C# - The Good, The Bad, and The Ugly • Linux ARM v7/v8 support added in .Net Core 2.1 (Pi2, Pi3, CM3) • Pi1 and Pi Zero use an ARMv6 processor, Mono only option for C# • Most Linux code and examples use Mono instead of .Net Core • Compiling on the Device is Painfully Slow (but there’s an easy work around) • Many .Net Core Projects don’t actually support the ARM architecture • Some Code Samples and Projects built for Windows 10 IOT instead • Limited Resources for Third-Party Hardware and/or Peripherals
- 24. Mono versus .Net Core MONO PROJECT • Latest supported version is 4.6.2 • Released 11/08/2016 • .NET Standard 1.6 • .NET Framework 4.6.2 (C# 6) • Partial Support of MVC4/MVC5 • ASP.NET, Console • WinForms (using GTK) .NET CORE • Supports Latest Version (2.2.4) • Released 04/09/2019 • .Net Standard 2.0 • .Net Core 2.2 (C# 7) • Full support of ASP.NET Core • ASP.NET, Console • Desktop Apps (using GTK)
- 25. Windows 10 IOT • Only one Front End Application (built using WPF) runs at a time • Multiple Back End Applications can run simultaneous • Limited Hardware Support • Doesn’t Support Pi Camera Module • Doesn’t Support Pi 3B+ • Doesn’t Support Onboard Bluetooth • Designed to Connect to Azure IOT Hub • Build Once, Deploy Multiple • Creates Abstraction Layer between Hardware and Application
- 26. RASPBERRY PI DEMO 1 IBM TJ Bot
- 27. RASPBERRY PI DEMO 2 Google AIY Projects – Voice and Vision
- 28. RASPBERRY PI DEMO 3 Homemade Robot
- 29. Future So Bright, I Got To Wear Shades • .NET Core 3.0 • C# 8.0 • Iot Support - System.Device.Gpio & Iot.Device.Bindings • Raspberry PI 4 • Not Coming in 2019 and Nothing Confirmed • More Processing Power, More RAM, Faster Network and I/O • Current boards have max 1 GB RAM and USB 2.0 • May use USB Type-C connector for power • Same Initial Price as current boards - $35 • Same General Size • Pi Zero has it’s own Development Schedule
- 30. Things To Keep In Mind • Raspberry PI and Arduino boards are designed for learning and prototyping. They are great for small personal projects. They not designed for Commercial Production Environments • The .Net Environment is not directly supported on most commercial hardware, applications will probably need to be converted to C/C++ or Python • Follow the basic rule – K.I.S.S. – Keep It Simple Stupid • Have Fun and Save Room for Pie
- 31. Useful Links • Raspberry Pi - https://www.raspberrypi.org/ • Arduino - https://www.arduino.cc/ • Google AIY Projects - https://aiyprojects.withgoogle.com/ • IBM TJBot - https://ibmtjbot.github.io/ • Sample Source Code & Resources - https://github.com/kenssamson/meetup-cs-web-apr19
- 32. Any Questions?