Drive Control Unit
The DCU controls the electric motors and the battery system.
1.28.0 (latest)
May 11th, 2026
- C8: C-Pilot is now available
- C8: Standard drive mode now uses the C-Pilot throttle curve
- C8: Do not show spurious low supply voltage error on startup
- P12: H20A inverter: support for both default and TLE firmware
- P12: Rudder validation sequence improvements
- P12: Rudder supervisor fault codes split for better diagnostics
- P12: CPAC servo no longer reports false excessive torque faults
- P12: Belt encoder set as default for P12 rudder
- P12: Kreisel BMS: charge current based on configured maximum, improving charge rate on two-pack boats
- P12: DC charging: maximum current raised from 300 A to 363 A (0.7 C)
- P12: DC charging: charge relay opening time extended to 1000 ms
- P12: DCU firmware can now be updated while DC charging is active
- P12: Propulsion: takeoff boost current added
- P12: Propulsion: improved stall detection during takeoff boost
- P12: DC/DC converter: error reported if converter fails to turn on
- P12: Emergency power: driver notified to switch emergency power if e-stop is pressed or 24 V SoC drops below 45%
- Propulsion stays active when charging plug is inserted during docking
1.27.2
March 18th, 2026
- P12: Limited DC charging current to
300 Ato avoid exceeding the thermal limits of the PDU.
1.24.1
October 28th, 2025
- P12: Fix issue with never reporting the fully charged with some DC chargers
- Fixes an issue with the drive controller failing to update
1.23.3
October 28th, 2025
- P12: Fix issue with never reporting the fully charged with some DC chargers
1.24.0
October 9th, 2025
What's Changed
- RPM limiting due to low SOC is no longer latched. No longer necessary to toggle key after charging.
- P12: Improvements to Kreisel battery handling and status reporting
- P12: Support for new release of rudder motor firmware
- Internal improvements and diagnostics
1.23.2
August 29th, 2025
- P12: Improved charge voltage handling for more accurate charge current ramp down
1.22.2
June 23rd, 2025
- Improved cooling pump control based on HV battery temperature for better thermal management
- Added distance tracking functionality
- Improve thermal POD model accuracy to reduce false reports
- Various internal optimizations and code improvements
- P12: Fixes an issue were charging incorrectly stopped before reaching desired SOC
1.21.4
April 10th, 2025
- Improvements to POD thermal management
- Optimized tuning of propulsion system during takeoff
- Enhanced diagnostics and error management
- Bug fixes and internal changes
1.19.1
February 28th, 2025
- Improved CAN Management: Enhanced efficiency and robustness in parsing and transmitting CAN data
- Clarified LED Behavior: Improved clarity of the LED (next to the start button) indications for better user understanding
- Charge Contactor Status Check: System now verifies the charge contactor status before shutdown to ensure safe operation
- Motor Handling: Improved handling of POD motors during low-speed operation
- Improved Handling of Retraction States: Improved response to changes in retraction states for better reliability
- Internal Improvements and Bug Fixes: Various enhancements and fixes to strengthen overall system stability
1.18.2
February 28th, 2025
- Improvements to GPS handling
- Release rudder motor when turning off steering
- Implement remote I/O control for easier servicing and testing
- Center the rudder automatically when retracting to harbor mode
- Lower DC under voltage protections in inverters to avoid triggering propulsion loss when cold battery is cold
- Improve cooling performance and diagnostics