Building a Robot Arm with .NET 8, Raspberry Pi, Blazor and SignalR
summary
A working Raspberry Pi robot arm wired to three servos (rotate, reach, grip) uses .NET 8, a single-line install script to get the SDK on Pi, System.Device.Gpio and PWM drivers to drive two hardware PWM ports plus a software PWM in high‑resolution mode for the third servo, and a Blazor front end with SignalR hub for real‑time control; Unity targets a Meta Quest 3 for VR control, Azure speech maps voice commands, the arm is functional but noticeably wobbly and latency from UK Azure appears in remote demos.
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chapters (17)
- 0:00Introduction
- 1:12Talk overview
- 7:17.NET 9 new features
- 9:04Install .NET 8 on Pi
- 11:33GPIO and hardware setup
- 14:01LED flashing with .NET
- 16:51Button input with GPIO
- 19:00Sensors and I/O expanders
- 20:25Servo control with PWM
- 23:37Assembling robot arm
- 27:51Real-time control with Blazor & SignalR
- 31:03Blazor UI to servos
- 35:33Unity and VR extension
- 37:19VR robot control
- 39:55Mobile app deployment
- 41:03AI voice control with .NET MAUI
- 43:44Summary
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