Projects
A shelf of the work — current pieces first, then the smaller tools that stay in service.
ShellBeacon Telemetry
An APRS beacon in pure shell script for a Raspberry Pi: position, station telemetry, and patio weather to APRS-IS every twenty minutes, with optional RF transmission on 144.390 MHz and a spoken voice announcement on 146.430 — no radio required, the Pi transmits itself. A fork of WA1GOV’s shellbeacon, extended by KJ5GBY.
The project · Live station page · Source
The Roll of Arms of Bexar
The living register of the College of Arms of Bexar — Registrum Armorum San Antonio de Béxar. Arms borne in and around San Antonio, Texas: the State, the County, the City, its military, its churches and institutions, and its people, each entered with its blazon.
Cozy Cats: Cat Sort Puzzle
A paid Android puzzle game — sort the cats, cozy up. In production on Google Play since October 2026.
The Kajukenbo Family Tree
The lineage of Kajukenbo, charted: more than ten thousand practitioners and the lines that connect them, published as an interactive tree.
cenzontle.us
A Raspberry Pi Zero W in San Antonio that weighs less than a kilobyte at the front door — a member of the 1kb.club. Home of the KJ5GBY station page and a small blog.
Also on the shelf
Saigo — a simple encryption toolkit written in Go.
Grand Grimoire — my recipes, kept as a grimoire.
Guile Web Server Example — a working example of a website written and hosted in Guile Scheme.