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Create Self-Signed HTTPS Certificates with a Custom Root CA
15 Oct 2025

Create Self-Signed HTTPS Certificates with a Custom Root CA

By BEN ABT Security Certificates SSL TLS HTTPS Smart Home OpenSSL 7 min reading time

Once you’ve established your own Root Certificate Authority, the next step is issuing server certificates for your local services. This guide walks through creating HTTPS certificates that are automatically trusted by …

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Create a Custom Root Certificate Authority for Self-Signed Certificates
13 Oct 2025

Create a Custom Root Certificate Authority for Self-Signed Certificates

By BEN ABT Security Certificates SSL TLS HTTPS Smart Home OpenSSL 7 min reading time

When running multiple services in a local network-whether for smart home automation, home labs or development environments-HTTPS encryption becomes essential. Instead of accepting browser warnings for every self-signed …

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Automatically discover tools for Azure OpenAI Realtime API
24 Sep 2025

Automatically discover tools for Azure OpenAI Realtime API

By BEN ABT Csharp Dotnet Azure OpenAI 9 min reading time

Azure now provides a unified Realtime API for low‑latency, multimodal conversations over WebRTC or WebSockets. If you’ve used the earlier preview versions (for example the GPT‑4o realtime preview), the new generation …

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Test ILogger in .NET the easy way (with an in-memory logger)
03 Sep 2025

Test ILogger in .NET the easy way (with an in-memory logger)

By BEN ABT Csharp Dotnet 6 min reading time

Logging is part of the contract of many components: when things fail, when branches are taken, when work completes. If a class owns logic, it should own its log output too. That makes logs worth testing–especially for …

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Azure Document Intelligence – Fix: ContentSourceNotAccessible (Invalid data URL)
01 Sep 2025

Azure Document Intelligence – Fix: ContentSourceNotAccessible (Invalid data URL)

By BEN ABT Azure Document Intelligence Form Recognizer Cognitive Services Azure Storage Managed Identity 3 min reading time

Problem Training custom models (for example, delivery notes) in Azure Document Intelligence initially worked fine. Suddenly, both training and auto-labeling started failing with “Internal Server Error”. In the model …

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Provision Microsoft Fabric with Azure Bicep
29 Aug 2025

Provision Microsoft Fabric with Azure Bicep

By BEN ABT Azure Microsoft Fabric Bicep Infrastructure as Code Power BI 4 min reading time

Overview Microsoft Fabric consolidates analytics workloads (including Power BI) on a tenant-wide capacity. These Fabric capacities (SKUs F2–F2048) can be provisioned declaratively with Bicep like any other Azure …

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Use SSH for Git Authentication in Azure DevOps
20 Aug 2025

Use SSH for Git Authentication in Azure DevOps

By BEN ABT Azure DevOps Git Ssh 5 min reading time

If you work with Azure DevOps Git repos, SSH is often the simplest, most secure and most policy‑friendly way to authenticate. Many organizations disable Personal Access Tokens (PATs) for security reasons, which breaks …

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Raspberry Pi WS2812B Lightstrip Unit Testing Strategies with .NET
14 Aug 2025

Raspberry Pi WS2812B Lightstrip Unit Testing Strategies with .NET

By BEN ABT Dotnet Raspberry Ws2812b Lightstrip 7 min reading time

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 …

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Raspberry Pi WS2812B Lightstrip Control with .NET
05 Aug 2025

Raspberry Pi WS2812B Lightstrip Control with .NET

By BEN ABT Dotnet Raspberry Ws2812b Lightstrip 7 min reading time

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 …

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Raspberry Build HAT: Unit Testing Strategies with .NET
30 Jul 2025

Raspberry Build HAT: Unit Testing Strategies with .NET

By BEN ABT Dotnet Raspberry Buildhat Lego 6 min reading time

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 …

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BEN ABT BEN ABT Software Engineer · Microsoft MVP Passionate about .NET, Azure, performance optimization and sustainable software engineering.

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Recent Posts
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Handle time correctly in .NET: TimeProvider
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Problem Details in ASP.NET Core and .NET 10
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Run Hono on Azure: Container Apps, Functions, App Service …
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About BEN

Benjamin Abt is a Software Engineer, Platform Architect and Microsoft MVP specializing in .NET, Azure, cloud architecture, performance optimization and sustainable software development.

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