Denis Hartl

AI

Tracking local YOLO model training in Azure ML Workspace

Learn to track local YOLO training runs in Azure ML Workspace with MLflow, including dataset versioning, model registry, and champion/challenger picks.

AI

AI made me miserable

Using AI all day left me drained and unfulfilled. Read how it made me miserable and the things I am doing to get out of it.

AI Featured

Building Dashboards with Grafana MCP and Claude Code

Building Grafana dashboards by hand is tedious. Here's how I use Claude Code and the Grafana MCP to generate them, then provision from GitHub.

AI posture detection

AI Sitting Posture Detection with NVIDIA Jetson Orin Nano: Continuous Learning and Improvement (Part 3)

Learn how to implement continuous model improvement for YOLO-based posture detection on the Jetson Orin Nano—from logging predictions to automated retraining.

AI

Comparing YOLO 11 Retraining Strategies for Continuous Learning

I tested four different YOLO 11 retraining strategies for continuous learning—and the results surprised me. Fine-tuning with frozen backbone layers achieved the best accuracy while using 70% less RAM than full retraining.

AI posture detection

AI Sitting Posture Detection with NVIDIA Jetson Orin Nano: Web UI and Alerting (Part 2)

Deploy your YOLO posture model on Jetson Orin Nano using FastAPI. Build a websocket web UI, alerting system, and MacOS app. Full source code included.

AI posture detection

AI Sitting Posture Detection with NVIDIA Jetson Orin Nano: Model Training and Preparation (Part 1)

Train a custom YOLO model for sitting posture detection on Jetson Orin Nano. Includes data collection, training, TensorRT optimization, and full GitHub code.

AI

NVIDIA Jetson Orin Nano: Getting Started with YOLO

A beginner's guide to running YOLO on the NVIDIA Jetson Orin Nano. Covers setup challenges, camera streaming in Jupyter, and hands-on examples of object detection, segmentation, classification, and pose estimation.

AI

NVIDIA Jetson Orin Nano: First Impressions & Initial Setup

First impressions and complete setup guide for the NVIDIA Jetson Orin Nano Developer Kit. Covers hardware assembly, SSD and camera installation, SDK manager troubleshooting, and remote access configuration.

AI

Exploring collaborative AI Coding Agents

An experiment with manually orchestrating multiple Claude Code agents—Architect, Engineer, and Documenter—to build a chess web app. Covers planning, workflow, prompts, and lessons learned about working with collaborative AI coding agents.

Azure

How to Automate Hevy Workout Tracking with Notion and Azure Functions

Automatically sync Hevy weight lifting workouts to Notion using Azure Functions and webhooks. Includes database design, Notion charts for visualization, and complete code on GitHub.

AI

How to get free tokens for the OpenAI API

Get daily free tokens for the OpenAI API by enabling data sharing. Learn about eligibility requirements, token limits by model, and the trade-offs you should know before opting in.

Azure

Exploring the Bicep @onlyIfNotExists decorator

The Bicep @onlyIfNotExists decorator lets you create resources once without overwriting them on subsequent deployments. Perfect for Key Vault secrets and other "create but don't touch" scenarios.

Azure

Tracking workouts from Apple Fitness in Notion using Azure Functions and AI

An over-engineered solution to sync Apple Fitness workouts to Notion. Uses an iOS Shortcut to capture workout screenshots, Azure Functions for processing, and Azure OpenAI to extract the data automatically.

Azure

Adding MCP Servers to Agents in Azure AI Foundry

Learn how to connect MCP servers to Azure AI Foundry agents using Python. This guide covers unauthenticated and authenticated connections, tool approval workflows, and current portal limitations.

Azure

Expanding Azure AI Foundry Agents with files & documents using the built in vector document store

Learn how to enhance Azure AI Foundry agents with document knowledge using the built-in vector store. A step-by-step guide covering agent creation, PDF file uploads, and querying your documents with AI.

Azure

Exploring Private Endpoint routing in Azure

Private Endpoints in Azure automatically create /32 routes that can bypass your firewall—even with a default route configured. Learn how this routing behavior works and how to regain control using Private Endpoint Network Policies.

Azure

Run Notion MCP Server in Azure Container Apps

Learn how to deploy the official Notion MCP server on Azure Container Apps using Bicep. This guide covers why the Azure CLI approach fails with double-dashed arguments and provides a working Bicep template to get your MCP server running for use with n8n and other automation tools.

3D printing

3D printed organizer for Sage (Breville) Barista Pro

A custom 3D printed organizer for the Sage/Breville Barista Pro espresso machine. Holds tamper, portafilter, WDT tool, puck screens, RDT spray, and milk jug—all in one compact space on top of the machine.

Azure

Back up Home Assistant to Azure

Protect your Home Assistant data from disaster with off-site backups to Azure Storage. This guide walks you through the complete setup—from creating an Azure Storage Account to configuring the Home Assistant integration—all for about 1 cent per month.