Moving Files Phone to Phone With Nothing But a Screen
One handset blinks animated QR codes, the other films it, and a byte-identical file comes out. Fountain codes, because there is no back channel.
marshallfrith.com
Geospatial and tactical software, built from scratch.
Build logs and tutorials for satellite imagery tooling, TAK integrations, and field software that runs on your own machine.
Projects
All projects →Finding Ships in Radar, Without a Neural Net
A local SAR vessel detector built on free Sentinel-1 imagery. CFAR detection, a physics-based classifier, and an honest accuracy number.
A TAK Server in Pure Python, No TAK.gov Account
Cursor-on-Target over TCP and UDP, SQLite for state, a Leaflet dashboard, and a setup wizard that hands a new operator a QR code.
Who's writing this
I build software for people who work outdoors with a radio and a tablet: satellite imagery analysis, TAK integrations, and small tools that keep running when the network doesn't.
Support the work
Every project here runs on hardware I pay for and time I don't bill. If a tutorial saved you a weekend, a tip keeps the next one coming.