A 1M-token LLM context window is a tool, not a target. How context actually works, why long threads cost more on every turn, and when to start a fresh chat versus keep going, with practical Claude Code tips and /context.
STATUS.md: a shared file for multi-agent work
A file-based pattern for coordinating multiple LLM agents on one task: a single shared, per-feature STATUS.md the agents read and write under explicit rules, how to make them follow a protocol and survive context loss, and when not to use it.
How I spent a weekend reinventing a 50-cent chip
What an optocoupler is and how electrical isolation works, built from a discrete LED and phototransistor on a breadboard with measurements, then replaced with a real 4N35 chip, and where optocouplers show up in actual circuits.
DIY Bluetooth Kobo page-turner remote with ESP32 and Lilka
Building a DIY Bluetooth page-turner remote for a Kobo e-reader by making an ESP32-S3 Lilka device act as a BLE HID keyboard, including BLE debugging on Debian, testing on the Kobo Clara 2E, and the full project code.
A minimal LLM Ops stack with tracing and model costs
Building a minimal LLM Ops stack: a FastAPI “customer support reply drafter” instrumented with Langfuse for request tracing, grounded retrieval, and per-request model cost tracking, so every LLM call is inspectable.
RAG: A (mostly) no-buzzword explanation
Retrieval-Augmented Generation (RAG) explained without buzzwords: how it gives an LLM the right data at answer time to fix stale knowledge and hallucinations, the step-by-step flow, its benefits over fine-tuning, and when RAG is not the answer.
Unikernels, without the marketing
Unikernels without the hype: an app compiled with only the OS it needs into a tiny microVM (Firecracker/KVM) for millisecond cold starts and strong isolation, the trade-offs versus VMs and containers, when to use or skip them, and how Unikraft powers Prisma Postgres.
When speed becomes strategy 💨
When constant speed and firefighting stop being healthy in founder-led startups: how to tell what actually matters when everything feels urgent, how to spot the warning signs early, and when to reconsider staying.
Solving the Openfire Lab Blue team challenge
A blue-team walkthrough of the CyberDefenders Openfire challenge using Wireshark and Zui: recovering the CSRF token and credentials, tracing the malicious plugin upload and reverse shell, and identifying the exploited CVE.
Solving the ShadowCitadel Lab Blue team challenge
A host-based forensics walkthrough of the ShadowCitadel challenge: following the attack from a malicious email attachment through a PowerShell downloader and second-stage executable to the C2 beacon IP and persistence mechanisms.