# Changelog

## v5.5.1 — 2024

Initial public open-source release under the Apache License 2.0.

- Firmware merged from the legacy WII3 (watchdog / maths-CPU) and WII1
  (buoy I/O) lineages.
- Target: ATmega2560 on the custom WII5 v2 carrier board.
- Modes: Capture, Position, Sleep, ManualTest, SelfTest, LowBattery.
- Iridium 9602 / 9603 SBD telemetry; Sparton AHRS-M1/M2 IMU; u-blox
  NEO-6M/7M GPS; dual SD storage.