The small friendly buoy

sfy-buoy - the firmware for the wave buoy.
sfy-drifter - a minimal, modem & gps, only drifter buoy.
hardware | build-tutorial | bill-of-materials - hardware and assembly instructions.
sfy-data - the server scraping or receiving data from deployed buoys.
sfy-processing - python libraries and tools for reading and post-processing received data.
sfy-dashboard - web interface for displaying latest position and overview of buoys.

The buoys deployed in the surf on the coast of Norway:

Acknowledgements