How Low Can You Go?
Decoding at 48, 8 and 4 kHz from the same raw IQ. Quality, compute saving, and disk saving measured.
Sailing through Code
Apps and side projects.
Latest posts
Decoding Weather Fax Transmissions with Ilma
Ilma is a NAVTEX, RTTY, and WEFAX decoder for sailors written in Python running on the Raspberry Pi.
Ilma, a Navtex Decoder for the Raspberry Pi
A receiver for Navtex maritime navigational and meteo warnings.
Eggs and Baskets
Running a microblog on Cloudflare and asking about competitors.
Building a GitHub Client Without a GitHub Account
I built a macOS menu bar app for Git sync. Now I don't have a GitHub account anymore.
WordPress to Astro in 24 Hours
Migrating a sailing blog with AI — and building a geo-referenced sea chart along the way.
SailorsLog on Track to Webpublishing
SailorsLog, the logbook app for iOS, is on track to implement webpublishing in version 2.
The Night Sky for Astronavigation
Plot the sky tonight for astronavigation. There are about a dozen stars that are used for celestial navigation. The chart shows which of the principal stars are above the horizon at your chosen time and position.
File Transfer from Mac to Android
Music Transfer is a standalone macOS app window with retro CRT terminal aesthetics. It transfers music mp3/aac or flac/alac files from Mac to an Android phone via USB or Wi-Fi. Or any other file.
Crossing
2D nautical simulation game. Skipper a sailing yacht across the North Sea Traffic Separation Schemes at night.
Celestial Navigation in the Browser
A tool for practicing sun sights with a sextant — sight reduction runs entirely client-side. Intercept computes the calculated altitude and azimuth using spherical trigonometry.
KlarText
A minimalistic plain text editor for macOS with a strict no-extras policy: no syntax highlighting, no AI, no autosave. A .txt file written fifty years ago opens today, without conversion, without a subscription, without the original software.
Pier
Ever lost hours of work because you saved over the wrong file? Or wished you could go back to how your document looked last Tuesday? Pier gives you that power — without any technical setup.
Quay
One-click sync to GitHub. Quay is a menu bar app that watches local folders and pushes changes to GitHub over Git. Written in Swift; Git operations shell out to the system git binary.
Keel
Local-first research database for digital humanities.
Recording Comparator
Recording Comparator compares audio recordings. It loads audio files side-by-side and lets users analyse.
SailorsLog
A logbook app for iOS. Sophisticated offline-capable sync for offshore sailors. Add photos, GPX tracks, and GPS positions for passage events. Send digital postcards.