Changelog
=========

v1.0.0 (2026-03-27)
-------------------

**Initial Release**

Features
^^^^^^^^

- ESP32 multi-sensor hub (Kogger, IMU, GPS, depth, temp, conductivity)
- Binary protocol v4 (AA55 frames)
- BlueOS Docker extension (HTTP :8099, WebSocket :8766)
- Kogger waterfall viewer (HTTP :8100, WebSocket :8101)
- MAVLink bridge (ATTITUDE, SCALED_PRESSURE, GPS_RAW_INT)
- JSONL session logging
- UDP Kogger raw forward (desktop KoggerApp compatibility)
- Ping assembler with multi-chunk handling
- Sphinx documentation (RTD theme)

Hardware Support
^^^^^^^^^^^^^^^^

- ESP32-WROOM-32UE DevKit-C v4
- Kogger Side-Scan Sonar (dual channel)
- HWT905 IMU (WitMotion)
- MS5837-30BA depth sensor (Blue Robotics Bar30)
- TSYS01 temperature sensor (Blue Robotics Celsius)
- Atlas Scientific EZO EC conductivity
- u-blox GPS

Known Issues
^^^^^^^^^^^^

- K1 EZO pins swapped in hardware (GPIO 19/18, not 18/19)
- SoftwareSerial limited to 3 active instances
- I2C requires short wires (<10cm) for reliability
- No automatic log rotation

v0.9.0 (2026-03-20)
-------------------

**Beta Release**

- Binary protocol v3 (with K1 RTK support)
- Initial BlueOS extension
- Kogger UDP forwarding
- Basic dashboard

v0.5.0 (2026-03-15)
-------------------

**Alpha Release**

- JSON protocol (deprecated in v1.0)
- ESP32 sensor hub MVP
- Serial → HTTP bridge

Roadmap
-------

v1.1.0 (Planned)
^^^^^^^^^^^^^^^^

- DVL velocity estimation (cross-correlation)
- EKF sensor fusion
- Dead reckoning position estimate
- Bathymetric map generation

v2.0.0 (Future)
^^^^^^^^^^^^^^^

- Full SLAM pipeline (loop closure, drift correction)
- Real-time 3D visualization
- ROS2 integration
- Multi-vehicle support