This document discusses building a Raspberry Pi-driven robot arm using .NET 7 and related technologies. It covers installing .NET 7 on the Raspberry Pi, using the GPIO and device bindings to control servos and sensors, and creating demos with Blazor, SignalR, and Unity to drive the robot arm. Links are provided to the code repository, NuGet packages, and the presenter's contact information.

2. Building a Raspberry-Pi-Driven Robot Arm

3. Pete Gallagher
@pete_codes
www.PeteCodes.co.uk
pete@pjgcreations.co.uk
Full Stack Development Manager at Avanade UK
Microsoft Certified Trainer & Azure MVP, Pluralsight Author
Decades of Desktop, Web & Embedded Software experience,
Meetup Organiser,
STEM Ambassador, Code Club Organiser, Gadget Addict
Father of two inquisitive girls

4. ● .NET 7
● Installing .NET 7
● Raspberry Pi GPIO and the Circuit
● Hello World (In the world of IoT)
● Device Bindings and Driving Servos
● Blazor and SignalR
● Final Demos
What We’re Covering

5. .NET 7

6. .NET 7
.NET 7
INFRASTRUCTURE
.NET STANDARD
DESKTOP WEB CLOUD MOBILE GAMING IoT AI

7. ● Improved ARM64 Code Generation
● Improved System.Text.Json Serialization
● Generic Math
● Regular Expression Improvements
● Support for Milliseconds & Nanoseconds
● dotnet new code completion
● Publish to a Container
What’s New in .NET 7

8. Raspberry Pi Install

9. Raspberry Pi Install
wget -O - https://raw.githubusercontent.com/pjgpetecodes/dotnet7pi/main/install.sh | sudo bash
Single-line Install

10. .NET 7 GPIO

11. ● Supports I/O, SPI, PWM, I2C
● Supports Raspberry Pi, Beagleboard,
Hummingboard, Odroid, etc.
● Supports Linux and Windows 10 IoT
● Installs via the CLI or Nuget PM
System.Device.Gpio
https://www.nuget.org/packages/
System.Device.Gpio

12. Raspberry Pi GPIO
Board Numbering
BCM Numbering

13. Raspberry Pi Circuit 1
Pin 10
Pin 26

14. Raspberry Pi Demo 1
Hello World (In the world of IoT)

15. ● BME280 Temp / Humidity Sensor
● MCP23xxx I/O Expander
● Explorer Hat
● Sense Hat
● Servos
● Much more…
Iot.Device.Bindings
https://www.nuget.org/packages/
Iot.Device.Bindings

16. Raspberry Pi Circuit 2

17. Raspberry Pi Circuit 2
Pin 25
Pin 35
Pin 13
Pin 12

18. Servos

19. Raspberry Pi Demo 2
Dancing Arm

20. Blazor

21. “Blazor is a single-page app framework for
building interactive client-side Web apps
with .NET.”
Scott Hanselman

22. SignalR

23. “ASP.NET SignalR is a library for ASP.NET
developers to add real-time web
functionality to their applications.”
Wikipedia

24. Raspberry Pi Demo 3
Drive the Arm

25. Unity

26. “Unity is a Cross-Platform Game Engine…
Unity gives users the ability to create
games and experiences in both 2D and
3D.”
Wikipedia

27. Raspberry Pi Demo 4
VR Robots!

28. ● GitHub and Workshop
https://bit.ly/dotnet5robotarmrepo
● What’s new in Dot Net 7
http://bit.ly/pjgdotnet7new
● Installing Dot Net 7 on the Raspberry Pi
http://bit.ly/dotnet7pi
● 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
Links

29. ● Twitter
@pete_codes
● Email
pete@pjgcreations.co.uk
● Blog
https://www.petecodes.co.uk
Contact Me
● Notts IoT
https://www.nottsiot.co.uk
● .NET Notts
https://www.dotnetnotts.co.uk
● 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

30. Pete Gallagher
@pete_codes /
@PJGCreations
www.PeteCodes.co.uk
www.PJGCreations.co.uk
Pete@PJGCreations.co.uk