Tag: Raspberry

Raspberry Pi WS2812B Lightstrip Unit Testing Strategies with .NET

Testing hardware-driven projects pays off quickly. Compared to driving a single LEGO motor, controlling a WS2812B lightstrip involves timing constraints, color math, frame buffers, and update sequencing–lots of places where regressions can hide. A focused unit-testing approach helps keep this code reliable and fast to iterate on. For more background on the general pattern, see the Build HAT article: Raspberry Build HAT: Unit Testing Strategies with .NET .

Raspberry Pi WS2812B Lightstrip Control with .NET

In this beginner-friendly guide, you’ll learn how to control a WS2812B (aka “NeoPixel”) LED light strip with a Raspberry Pi using .NET. We’ll enable SPI on the Pi, wire the strip correctly (including best practices like a level shifter and a series resistor), and write a small .NET 9 app using the Iot.Device.Bindings library to animate colors. We’ll also publish the app as a self-contained linux-arm64 binary so no .NET runtime is needed on the Pi.

Raspberry Build HAT: Unit Testing Strategies with .NET

If you go beyond hobby tinkering and aim for reliable, maintainable software, you need tests. Hardware projects are no exception. In fact, the closer you get to IO, timing, and device state, the more you benefit from having a fast feedback loop and repeatable verification.

Raspberry Build HAT: Controlling LEGO Engines with .NET

In this beginner-friendly guide, you’ll learn how to control LEGO motors connected to a Raspberry Pi via the official Raspberry Pi Build HAT – using a simple, pure .NET application. We’ll use the Iot.Device.BuildHat NuGet package, which provides a friendly .NET API for the Build HAT. No Python required. We’ll also publish the app as a self-contained .NET 9 binary for linux-arm64 so you do not need to install .NET on the Raspberry Pi. This approach is easy to set up, reliable, and a great starting point for your own robotics projects.

Fix Firefox crash on Ubuntu Mate

Unfortunately, currently the latest versions if Firefox (current: 61) on Ubuntu Mate are not supported. Firefox crashes. The latest version that runs on Ubuntu mate is the 42.

Raspberry PI und Ubuntu Mate mit Unitymedia WifiSpot verbinden

Ziel ist es einen Raspberry PI mit dem Unitymedia WifiSpot zu verbinden.

Dafür verwende ich als Basis Ubuntu Mate 16.04, sowie einen Raspberry PI 3 {target=_blank}, der bereits einen W-Lan-Chip Onboard hat. Diese Anleitung funktioniert genauso mit einem Raspberry PI 2 {target=_blank} benötigt jedoch einen extra W-Lan-USB-Dongle. Ich verwende dafür ein EDUP-Dongle {target=_blank}.

Delete network manager entries in Ubuntu Mate

Often, I have the problem that the buttons of the Ubuntu Mate Network Manager to edit or delete network entries are disabled. This means the current user - even if I am root - do not have permissions.