feat(perception): wheel encoder differential drive odometry (Issue #184) #318

Merged
sl-jetson merged 1 commits from sl-perception/issue-184-wheel-odom into main 2026-03-03 00:42:28 -05:00

1 Commits

Author SHA1 Message Date
067a871103 feat(perception): wheel encoder differential drive odometry (Issue #184)
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Adds saltybot_bridge_msgs package with WheelTicks.msg (int32 left/right
encoder counts) and a WheelOdomNode that subscribes to
/saltybot/wheel_ticks, integrates midpoint-Euler differential drive
kinematics (handling int32 counter rollover), and publishes
nav_msgs/Odometry on /odom_wheel at 50 Hz with optional TF broadcast.

New files:
  jetson/ros2_ws/src/saltybot_bridge_msgs/
    msg/WheelTicks.msg
    CMakeLists.txt, package.xml

  jetson/ros2_ws/src/saltybot_bringup/
    saltybot_bringup/_wheel_odom.py     — pure kinematics (no ROS2 deps)
    saltybot_bringup/wheel_odom_node.py — 50 Hz timer node + TF broadcast
    test/test_wheel_odom.py             — 42 tests, all passing

Modified:
  saltybot_bringup/package.xml  — add saltybot_bridge_msgs, nav_msgs deps
  saltybot_bringup/setup.py     — add wheel_odom console_script entry

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-03-03 00:41:39 -05:00