ahcomputing.com / blog

aaron@ahcomputing:~$ field-notes

Infrastructure war stories, systems thinking, and notes from the field.

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Transmission log

What I Learned Losing the AI Builders Hackathon

I built a roofing estimator that hit 2.1% accuracy error in four hours and still lost. Honest postmortem on what I built, where I stopped short, and what changes next time.

What a Hostname Rename Taught Me About Proxmox Internals

A routine rename turned into a kernel panic, a Ventoy injection discovery, and live SQLite surgery on a running Proxmox cluster. Everything I didn't know about how Proxmox actually stores config.

Jarvis: Architecture of an AI Robot Dog

The state machine, threading model, audio pipeline, LED system, physical commands, and game modes that run under the hood of a local AI robot dog. No cloud, no subscriptions.

The Script That Eliminated a Support Queue

How 60 lines of Python generating WiFi QR codes for 200+ apartment units eliminated an entire category of resident support calls before they ever happened.

Project 1984: I Built a Covert Recorder Inside a Book

An ESP32 Feather, an I2S microphone, a microSD breakout, and a hollowed-out hardcover copy of Orwell's 1984. Open the book, flip the switch, set it down. Lessons in hollowing, soldering, and why you need a hard power cutoff switch.

The Real Project Wasn't the Bot

I reverse-engineered a browser MMO, mapped 25 undocumented endpoints, and taught my non-technical brother how it all worked. He used AI to take it the rest of the way. Now he builds his own games.

More to come soon.