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Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR  Copyright Pete Gallagher 2024  @Pete_Codes
Building a Raspberry Pi
Robot Arm with .NET 8,
Blazor and SignalR
PETE GALLAGHER
PETECODES.CO.UK
Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR  Copyright Pete Gallagher 2024  @Pete_Codes
About Me
Pete Gallagher
@pete_codes
www.PeteCodes.co.uk
pete@pjgcreations.co.uk
Application Architect Manager at Avanade UK
Microsoft Certified Trainer & Azure MVP, Pluralsight Author
Decades of Desktop, Web & Embedded Software experience,
Meetup Organiser,
STEM Ambassador Gadget Addict
Father of two inquisitive girls
Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR  Copyright Pete Gallagher 2024  @Pete_Codes
Hello World (In the
world of IoT)
Device Bindings and
Driving Servos
Raspberry Pi GPIO and
the Circuit
.NET 8 and Installing on
the Pi
Final Demos
Blazor and SignalR
What were going to be doing
Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR  Copyright Pete Gallagher 2024  @Pete_Codes
.NET 8
Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR  Copyright Pete Gallagher 2024  @Pete_Codes
.NET 8
INFRASTRUCTURE
.NET STANDARD
.NET everywhere
WEB CLOUD
IoT AI
DESKTOP MOBILE GAMING
Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR  Copyright Pete Gallagher 2024  @Pete_Codes
Whats new in .NET 8?
https://bit.ly/pjgdotnet8new
ARM64 Performance
Improvements
Garbage Collector
Enhancements
JSON
Enhancements
.NET
Aspire
Publish to a
Container
Maui / ASP.NET / EF
Improvements
Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR  Copyright Pete Gallagher 2024  @Pete_Codes
.NET Ecosystem Momentum
> 6.1M
Monthly Active Users
In Visual Studio
#1 Most Admired
Framework
.NET Core
Top 5
Highest velocity OSS Projects
github.com/dotnet
github.com/aspnet
Top 5
Language on GitHub
C#
15x
Faster than Node.js
ASP.NET Core
40%
New to .NET are students*
dot.net download survey
.NET Conf 2023 Keynote - https://bit.ly/pjgdotnetconf2023
Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR  Copyright Pete Gallagher 2024  @Pete_Codes
Raspberry Pi Install
Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR  Copyright Pete Gallagher 2024  @Pete_Codes
Raspberry Pi Install
Single Line Install
wget -O - https://raw.githubusercontent.com/pjgpetecodes/dotnet8pi/main/install.sh | sudo bash
http://bit.ly/dotnet8pi
Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR  Copyright Pete Gallagher 2024  @Pete_Codes
.NET 8 & GPIO
Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR  Copyright Pete Gallagher 2024  @Pete_Codes
System.Device.Gpio
https://www.nuget.org/packages/System.Device.Gpio
Very Limited Support for
Raspberry Pi 5
Supports Linux and
Windows 10 IoT
Supports Raspberry Pi,
Beagleboard,
Hummingboard,
Odroid etc
Supports I/O, SPI,
PWM, I2C
Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR  Copyright Pete Gallagher 2024  @Pete_Codes
Raspberry Pi GPIO
Board Numbering
BCM Numbering
Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR  Copyright Pete Gallagher 2024  @Pete_Codes
Raspberry Pi Circuit 1
Pin 10
Pin 26
Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR  Copyright Pete Gallagher 2024  @Pete_Codes
Raspberry Pi Demo 1
Hello World (In the world of IoT)
Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR  Copyright Pete Gallagher 2024  @Pete_Codes
https://www.nuget.org/packages/Iot.Device.Bindings
Explorer Hat
Sense Hat
MCP23xxx I/O Expander
BME280 Temperature /
Humidity Sensor
Much More!
Servos
Iot.Device.Bindings
Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR  Copyright Pete Gallagher 2024  @Pete_Codes
Raspberry Pi Circuit 2
Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR  Copyright Pete Gallagher 2024  @Pete_Codes
Servo Control Board
Pin 25
Pin 35
Pin 13
Pin 12
Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR  Copyright Pete Gallagher 2024  @Pete_Codes
Servos Control
Power
Ground
Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR  Copyright Pete Gallagher 2024  @Pete_Codes
Servos
Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR  Copyright Pete Gallagher 2024  @Pete_Codes
Raspberry Pi Demo 2
Servo Demo
Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR  Copyright Pete Gallagher 2024  @Pete_Codes
Blazor
Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR  Copyright Pete Gallagher 2024  @Pete_Codes
Blazor is a single-page app
framework for building
interactive client-side Web
apps with .NET
Scott Hanselman
Blazor
Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR  Copyright Pete Gallagher 2024  @Pete_Codes
https://bit.ly/pjgblazor
No JavaScript!*
Server Side or Client
Side WebAssembley
Web UI Framework
based in C# / Razor and
HTML
Steve Sandersons Pet
Project
Support in All Major
Browsers
Client Side .NET with no
plugins
Blazor
Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR  Copyright Pete Gallagher 2024  @Pete_Codes
SignalR
Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR  Copyright Pete Gallagher 2024  @Pete_Codes
ASP.NET SignalR is a library for
ASP.NET developers to add real-
time web functionality to their
applications
Wikipedia
SignalR
Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR  Copyright Pete Gallagher 2024  @Pete_Codes
https://bit.ly/pjgsignalr
Open Source
Supports Web Sockets,
Server-Sent Events,
Long Polling
Enables Bi-directional
Real-Time communications
Created by David Fowler
and Damian Edwards
in 2011
SignalR
Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR  Copyright Pete Gallagher 2024  @Pete_Codes
Raspberry Pi Demo 3
Drive the Arm!
Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR  Copyright Pete Gallagher 2024  @Pete_Codes
Unity and VR
Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR  Copyright Pete Gallagher 2024  @Pete_Codes
Unity is a Cross-Platform Game
Engine
Unity gives users the ability to
create games and experiences in
both 2D and 3D
Wikipedia
Unity and VR
Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR  Copyright Pete Gallagher 2024  @Pete_Codes
https://unity.com/
Scripting using
.NET Standard 2.0
or C# 8
Support for Virtual and
Mixed Reality
Cross Platform
Founded in 2002 by
Nicholas Francis,
Joachim Ante & David
Helgason
Adding NuGet
Packages can be painful
Build and Deploy
Directly to the Headset
Unity and VR
Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR  Copyright Pete Gallagher 2024  @Pete_Codes
Raspberry Pi Demo 4
VR Robots!
Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR  Copyright Pete Gallagher 2024  @Pete_Codes
Bonus Section!
Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR  Copyright Pete Gallagher 2024  @Pete_Codes
.NET everywhere
Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR  Copyright Pete Gallagher 2024  @Pete_Codes
.NET everywhere
Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR  Copyright Pete Gallagher 2024  @Pete_Codes
Links
 GitHub and Workshop
https://bit.ly/dotnetrobotgithub
 Installing Dot Net 8 on the Raspberry Pi
http://bit.ly/dotnet8pi
 Dot Net GPIO Nuget Package
https://www.nuget.org/packages/System.Device.Gpio
 Dot Net IoT Device Bindings Source Code
https://github.com/dotnet/iot/tree/master/src/devices
 3D Printed Robot Arm  From the presentation
https://www.thingiverse.com/thing:1015238
 3D Printed Robot Arm - Workshop
http://bit.ly/pjgrobotarmparts
Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR  Copyright Pete Gallagher 2024  @Pete_Codes
 Twitter
@pete_codes
 Email:
pete@pjgcreations.co.uk
 Personal Website:
https://www.petecodes.co.uk
Notts IoT:
https://www.nottsiot.co.uk
 Dot Net Notts:
https://www.dotnetnotts.co
 Notts Dev Workshop:
https://www.nottsdevworkshop.co.uk
 LATi:
https://www.lati.org.uk
 Agile Engineering Podcast:
https://agileengineeringpodcast.com/
 Azureish Live:
https://www.twitch.tv/azureishlive
Contact Me
際際滷s: https://bit.ly/pjgndcoslo2024
Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR  Copyright Pete Gallagher 2024  @Pete_Codes
Contact Me
Pete Gallagher
@pete_codes
www.PeteCodes.co.uk
Pete@PJGCreations.co.uk
際際滷s: https://bit.ly/pjgndcoslo2024

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  • 1. Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR Copyright Pete Gallagher 2024 @Pete_Codes Building a Raspberry Pi Robot Arm with .NET 8, Blazor and SignalR PETE GALLAGHER PETECODES.CO.UK
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  • 3. Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR Copyright Pete Gallagher 2024 @Pete_Codes Hello World (In the world of IoT) Device Bindings and Driving Servos Raspberry Pi GPIO and the Circuit .NET 8 and Installing on the Pi Final Demos Blazor and SignalR What were going to be doing
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  • 7. Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR Copyright Pete Gallagher 2024 @Pete_Codes .NET Ecosystem Momentum > 6.1M Monthly Active Users In Visual Studio #1 Most Admired Framework .NET Core Top 5 Highest velocity OSS Projects github.com/dotnet github.com/aspnet Top 5 Language on GitHub C# 15x Faster than Node.js ASP.NET Core 40% New to .NET are students* dot.net download survey .NET Conf 2023 Keynote - https://bit.ly/pjgdotnetconf2023
  • 8. Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR Copyright Pete Gallagher 2024 @Pete_Codes Raspberry Pi Install
  • 9. Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR Copyright Pete Gallagher 2024 @Pete_Codes Raspberry Pi Install Single Line Install wget -O - https://raw.githubusercontent.com/pjgpetecodes/dotnet8pi/main/install.sh | sudo bash http://bit.ly/dotnet8pi
  • 10. Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR Copyright Pete Gallagher 2024 @Pete_Codes .NET 8 & GPIO
  • 11. Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR Copyright Pete Gallagher 2024 @Pete_Codes System.Device.Gpio https://www.nuget.org/packages/System.Device.Gpio Very Limited Support for Raspberry Pi 5 Supports Linux and Windows 10 IoT Supports Raspberry Pi, Beagleboard, Hummingboard, Odroid etc Supports I/O, SPI, PWM, I2C
  • 12. Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR Copyright Pete Gallagher 2024 @Pete_Codes Raspberry Pi GPIO Board Numbering BCM Numbering
  • 13. Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR Copyright Pete Gallagher 2024 @Pete_Codes Raspberry Pi Circuit 1 Pin 10 Pin 26
  • 14. Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR Copyright Pete Gallagher 2024 @Pete_Codes Raspberry Pi Demo 1 Hello World (In the world of IoT)
  • 15. Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR Copyright Pete Gallagher 2024 @Pete_Codes https://www.nuget.org/packages/Iot.Device.Bindings Explorer Hat Sense Hat MCP23xxx I/O Expander BME280 Temperature / Humidity Sensor Much More! Servos Iot.Device.Bindings
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  • 17. Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR Copyright Pete Gallagher 2024 @Pete_Codes Servo Control Board Pin 25 Pin 35 Pin 13 Pin 12
  • 18. Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR Copyright Pete Gallagher 2024 @Pete_Codes Servos Control Power Ground
  • 19. Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR Copyright Pete Gallagher 2024 @Pete_Codes Servos
  • 20. Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR Copyright Pete Gallagher 2024 @Pete_Codes Raspberry Pi Demo 2 Servo Demo
  • 21. Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR Copyright Pete Gallagher 2024 @Pete_Codes Blazor
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  • 23. Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR Copyright Pete Gallagher 2024 @Pete_Codes https://bit.ly/pjgblazor No JavaScript!* Server Side or Client Side WebAssembley Web UI Framework based in C# / Razor and HTML Steve Sandersons Pet Project Support in All Major Browsers Client Side .NET with no plugins Blazor
  • 24. Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR Copyright Pete Gallagher 2024 @Pete_Codes SignalR
  • 25. Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR Copyright Pete Gallagher 2024 @Pete_Codes ASP.NET SignalR is a library for ASP.NET developers to add real- time web functionality to their applications Wikipedia SignalR
  • 26. Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR Copyright Pete Gallagher 2024 @Pete_Codes https://bit.ly/pjgsignalr Open Source Supports Web Sockets, Server-Sent Events, Long Polling Enables Bi-directional Real-Time communications Created by David Fowler and Damian Edwards in 2011 SignalR
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  • 29. Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR Copyright Pete Gallagher 2024 @Pete_Codes Unity is a Cross-Platform Game Engine Unity gives users the ability to create games and experiences in both 2D and 3D Wikipedia Unity and VR
  • 30. Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR Copyright Pete Gallagher 2024 @Pete_Codes https://unity.com/ Scripting using .NET Standard 2.0 or C# 8 Support for Virtual and Mixed Reality Cross Platform Founded in 2002 by Nicholas Francis, Joachim Ante & David Helgason Adding NuGet Packages can be painful Build and Deploy Directly to the Headset Unity and VR
  • 31. Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR Copyright Pete Gallagher 2024 @Pete_Codes Raspberry Pi Demo 4 VR Robots!
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  • 34. Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR Copyright Pete Gallagher 2024 @Pete_Codes .NET everywhere
  • 35. Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR Copyright Pete Gallagher 2024 @Pete_Codes Links GitHub and Workshop https://bit.ly/dotnetrobotgithub Installing Dot Net 8 on the Raspberry Pi http://bit.ly/dotnet8pi Dot Net GPIO Nuget Package https://www.nuget.org/packages/System.Device.Gpio Dot Net IoT Device Bindings Source Code https://github.com/dotnet/iot/tree/master/src/devices 3D Printed Robot Arm From the presentation https://www.thingiverse.com/thing:1015238 3D Printed Robot Arm - Workshop http://bit.ly/pjgrobotarmparts
  • 36. Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR Copyright Pete Gallagher 2024 @Pete_Codes Twitter @pete_codes Email: pete@pjgcreations.co.uk Personal Website: https://www.petecodes.co.uk Notts IoT: https://www.nottsiot.co.uk Dot Net Notts: https://www.dotnetnotts.co Notts Dev Workshop: https://www.nottsdevworkshop.co.uk LATi: https://www.lati.org.uk Agile Engineering Podcast: https://agileengineeringpodcast.com/ Azureish Live: https://www.twitch.tv/azureishlive Contact Me 際際滷s: https://bit.ly/pjgndcoslo2024
  • 37. Building a Robot Arm with Raspberry Pi, .NET 8, Blazor & SignalR Copyright Pete Gallagher 2024 @Pete_Codes Contact Me Pete Gallagher @pete_codes www.PeteCodes.co.uk Pete@PJGCreations.co.uk 際際滷s: https://bit.ly/pjgndcoslo2024

Editor's Notes

  • #4: .NET Aspire Oppinionated Cloud Ready Stack for distrusted computing
  • #6: .NET is an entire software development platform that takes care of a lot of the heavy lifting for you when you want to build an application. Applications frameworks help you build the specific types of apps or workloads and enable you to literally build any app for any platform with any operating system. Each .NET workload shares a common infrastructure and .NET Standard library. This means not only are your .NET skills portable, but your actual code is portable no matter what youre building. This makes it easy to share reusable components (called libraries) across the breadth of applications people build. Additionally, there are a broad set of development tools that makes it really productive to write, debug, build and manage code bases. See: www.dot.net
  • #7: .NET Aspire Oppinionated Cloud Ready Stack for distrusted computing
  • #8: 2024: .NET Conf 2023 Keynote - https://bit.ly/pjgdotnetconf2023 https://www.techempower.com/benchmarks/#section=data-r22&hw=ph&test=plaintext&f=zik0zj-zik0zj-zik0zj-zik0zj-zik0zj-zik0zj-hra0hr-zik0zj-zik0zj-zik0zj-qmx0qn-zik0zj-zik0zj-zik0zj-1ekf&l=8vn08w-0&c=3 2020: Build 2020 Journey to one .NET - https://www.youtube.com/watch?v=ctSqiD8BGPM https://insights.stackoverflow.com/survey/2019#technology-most-loved-dreaded-and-wanted-loved3 github.com/cncf/velocity octoverse.github.com www.techempower.com/benchmarks/#section=data-r18&hw=ph&test=plaintext
  • #16: .NET Aspire Oppinionated Cloud Ready Stack for distrusted computing
  • #21: Each PWM Channel is created passing in; The Chip Number The PWM Channel The Frquency Optionally, the Duty Cycle Percentage We also then create twoServoMotorobjects, passing in; The PWM Channel we'll be using The Maximum Angle of the Servo - We're using a 180 degree Servo, so we pass in 180 here The Minimum Pulse Width The Maximum Pulse Width
  • #23: Blazor replaces javascript and runs C# on the client side directly in the browsers with no plugins needed. Blazor Server Works as a web Server (Shipped) Blazor Web Assembly (May 2020) Blazor Renders HTML, but Blazor Native but can render to other things like Native Controls for Mobile.
  • #24: Blazor replaces javascript and runs C# on the client side directly in the browsers with no plugins needed. Blazor Server Works as a web Server (Shipped) Blazor Web Assembly (May 2020) Blazor Renders HTML, but Blazor Native but can render to other things like Native Controls for Mobile. Originally developed as a pet project bySteve Sandersonat Microsoft, Blazor is Web UI Framework which is based on C#, Razor and HTML. Blazor compiles down to WebAssembly, which makes it super (or blazingly) fast (Hence the Razor with a B). Blazor allows developers to write client side .net You may say Oh, like Silverlight? Nope, no plugins needed Its just supported natively in most modern browsers.
  • #28: Server: Hubs ChatHub Startup.cs using BlazorSignalRApp.Server.Hubs; ConfigureServices services.AddSignalR(); app.useEndpoint endpoints.MapHub<ChatHub>("/chathub"); Properties Launchconfig applicationUrl Client Pages Index.razor _imports.rzor Wwwroot Index.html
  • #35: Blazor replaces javascript and runs C# on the client side directly in the browsers with no plugins needed. Blazor Server Works as a web Server (Shipped) Blazor Web Assembly (May 2020) Blazor Renders HTML, but Blazor Native but can render to other things like Native Controls for Mobile. Originally developed as a pet project bySteve Sandersonat Microsoft, Blazor is Web UI Framework which is based on C#, Razor and HTML. Blazor compiles down to WebAssembly, which makes it super (or blazingly) fast (Hence the Razor with a B). Blazor allows developers to write client side .net You may say Oh, like Silverlight? Nope, no plugins needed Its just supported natively in most modern browsers.
  • #38: .NET is an entire software development platform that takes care of a lot of the heavy lifting for you when you want to build an application. Applications frameworks help you build the specific types of apps or workloads and enable you to literally build any app for any platform with any operating system. Each .NET workload shares a common infrastructure and .NET Standard library. This means not only are your .NET skills portable, but your actual code is portable no matter what youre building. This makes it easy to share reusable components (called libraries) across the breadth of applications people build. Additionally, there are a broad set of development tools that makes it really productive to write, debug, build and manage code bases. See: www.dot.net
  • #39: .NET is an entire software development platform that takes care of a lot of the heavy lifting for you when you want to build an application. Applications frameworks help you build the specific types of apps or workloads and enable you to literally build any app for any platform with any operating system. Each .NET workload shares a common infrastructure and .NET Standard library. This means not only are your .NET skills portable, but your actual code is portable no matter what youre building. This makes it easy to share reusable components (called libraries) across the breadth of applications people build. Additionally, there are a broad set of development tools that makes it really productive to write, debug, build and manage code bases. See: www.dot.net