feat(rover): SaltyRover 4-wheel ESC motor driver (Issue #110)
- kinematics.py: pure unicycle→differential/skid-steer kinematics,
speed_to_pwm (1000–2000µs), compute_wheel_speeds with ±max clip,
odometry_from_wheel_speeds inverse helper
- rover_driver_node.py: 50 Hz ROS2 node; serial P<ch1>,<ch2>,<ch3>,<ch4>\n
protocol; heartbeat H\n; deadman on /cmd_vel silence; runtime 2WD/4WD
variant switch via four_wheel param; dead-reckoning odometry;
publishes /saltybot/rover_pwm (JSON) + /saltybot/rover_odom
- config/rover_params.yaml, launch/rover_driver.launch.py, package.xml,
setup.py, setup.cfg
- test/test_rover_kinematics.py: 51 unit tests, all passing
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
sl-controls
e313d92012