Software Overview
All of the code we develop with ROS runs on the Jetson Tx2. ArduPilot is the firmware running on the Piwhawk. ROS nodes can communicate with ArduPilot over mavros, which converts between ROS topics and ArduPilots's MAVLink.

See prop_follower package documentation for an example of some ROS nodes and topics working together to have the boat follow a prop.
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