WII5 is an open-source wave-buoy project. AVR firmware, Linux maths code, schematics, PCB designs, and the wave-motion algorithms used by ice scientists — all in the open.
Built to last. Released to share. Documented so the next group can pick it up.
The earlier WII generations produced a decade of peer-reviewed science, including a 2014 Nature paper on storm-induced sea-ice breakup. Source code: WII5Firmware on Gitea.
Buoys
WII1 through WII5. Hardware enclosures, batteries, electronics, firmware, and field tools.
Software
Satellite-side server, analysis tooling, viewers, and the on-board maths code.
Data
Sample payloads, schemas, links to live and curated archives, and the rules around what we can publish.