Posts
Technical notes on the projects I work on: artificial intelligence, reverse engineering, systems. Every post opens with an "In short" box for readers who only want the key points.
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An AI assistant for my Lexus CT200h's workshop manual
A RAG system that answers questions about a car's workshop manual and cites its pages: hybrid search, diagnostic trees, wiring connections rebuilt from the diagrams, and web search for known faults.
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Reading a Lexus CT200h's hybrid battery from an iPhone
An iOS app that reads the hybrid battery of a Lexus CT200h through a cheap Bluetooth diagnostic adapter: how to query the battery's control unit, how to decode voltages, currents and temperatures, and how to control the fan safely.
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Reverse engineering the Bluetooth protocol of a concert lightstick
How to reconstruct a lightstick's Bluetooth protocol to control it from a PC without the official app: traffic capture, static analysis of the Android app, packet format and checksum.
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One GPU for AI, shared by many users: virtual machines and containers on Proxmox
A 48 GB NVIDIA Quadro RTX 8000 GPU shared between virtual machines and LXC containers on Proxmox: why the standard options fall short, what the "merged" driver solves and what it costs, plus a remote power button built on an ESP32 microcontroller.