Reverse Engineering Marine Engines: Make Powerboats Do Your Bidding
Reverse engineers proprietary closed-source electronic engine controls and throttle protocols on modern outboard marine engines for autonomous navigation.
Summary
The Expanding Autonomous Vessel Ecosystem
The market for autonomous surface vessels and uncrewed boats is expanding rapidly, with open-source autopilots like ArduPilot widely available. However, marine propulsion systems remain closed, proprietary black boxes.
Proprietary Engine Control Architecture
Unlike the automotive sector, marine outboard and inboard engine manufacturers tightly restrict interface control documents (ICDs) and utilize proprietary CAN and serial protocols for throttle, shifting, and steering actuation.
Reverse Engineering Outboard Protocols
Alex Lorman details the process of reverse engineering electronic engine control units across major marine manufacturers, analyzing CAN message timing, bus arbitration, and throttle position commands from jet-skis to high-horsepower outboard motors.
Bridging Open Autopilots to Marine Propulsion
Translating reverse-engineered CAN commands into open-source flight controller protocols enables seamless, autonomous throttle and steering control, paving the way for low-cost autonomous research vessels.
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