https://cammisa.dev/en/ Giovanni Cammisa, computer engineer and IT consultant in the Brescia area, Italy: AI, systems administration, security. Technical blog about my projects. en https://cammisa.dev/en/blog/carmanualrag/ https://cammisa.dev/en/blog/carmanualrag/ Sat, 19 Sep 2026 08:00:00 +0000 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. https://cammisa.dev/en/blog/hv-battery-ios/ https://cammisa.dev/en/blog/hv-battery-ios/ Sat, 19 Sep 2026 08:00:00 +0000 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. https://cammisa.dev/en/blog/lightstick-ble/ https://cammisa.dev/en/blog/lightstick-ble/ Sat, 19 Sep 2026 08:00:00 +0000 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. https://cammisa.dev/en/blog/server-gpu-proxmox/ https://cammisa.dev/en/blog/server-gpu-proxmox/ Sat, 19 Sep 2026 08:00:00 +0000 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.