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4fed80f36d
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feat: SaltyRover 4-wheel diff-drive control loop (#74)
Adds saltyrover_drive ROS2 package — 4-wheel differential drive controller
for the stable SaltyRover chassis (no balance PID required).
rover_drive_node:
- Subscribes /cmd_vel (Twist), converts to left/right wheel speeds
- Tank-style kinematics: v_left = linear.x - angular.z × sep/2
- FL/RL share left speed, FR/RR share right speed (paired axles)
- Publishes /rover/wheel_speeds (JSON: {"cmd":"drive4","fl":N,"fr":N,"rl":N,"rr":N})
- Trapezoidal ramp: accel 2.0 m/s², decel 4.0 m/s² (stable chassis allows faster ramps)
- cmd_vel watchdog (0.5s timeout → zero speeds)
- max_speed 3.0 m/s (±1000 STM32 ticks)
rover_odom_node:
- Dead-reckoning odometry from /cmd_vel (encoder-ready for future HW)
- Publishes /odom (nav_msgs/Odometry) + TF odom→base_link
- Forward Euler pose integration at 50 Hz
52/52 unit tests: kinematics, int scaling, JSON builder, full pipeline,
trapezoidal ramp, odometry integration, quaternion conversion.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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2026-03-01 01:14:27 -05:00 |
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a89297f1d4
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Merge pull request 'feat(bd-a2j): Sensor driver integration — RealSense D435i + RPLIDAR A1M8' (#17) from sl-perception/bd-a2j-sensor-drivers into main
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2026-02-28 17:19:41 -05:00 |
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76067d6d89
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feat(bd-a2j): RealSense D435i + RPLIDAR A1M8 ROS2 driver integration
Adds saltybot_bringup ROS2 package with four launch files:
- realsense.launch.py — D435i at 640x480x15fps, IMU unified topic
- rplidar.launch.py — RPLIDAR A1M8 via /dev/rplidar udev symlink
- sensors.launch.py — both sensors + static TF (base_link→laser/camera)
- slam.launch.py — sensors + slam_toolbox online_async (compose entry point)
Sensor config YAMLs (mounted at /config/ in container):
- realsense_d435i.yaml — Nano power-budget settings (15fps, no pointcloud)
- rplidar_a1m8.yaml — Standard scan mode, 115200 baud, laser frame
- slam_toolbox_params.yaml — Nano-tuned (2Hz processing, 5cm resolution)
Fixes docker-compose volume mount: ./ros2_ws/src:/ros2_ws/src
(was ./ros2_ws:/ros2_ws/src — would have double-nested the src directory)
Topic reference and verification commands in SENSORS.md.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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2026-02-28 17:14:21 -05:00 |
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7c4e46aaa1
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feat: STM32-to-Jetson ROS2 serial bridge node
saltybot_bridge ROS2 Python package (ament_python):
- serial_bridge_node.py: reads USB CDC JSON telemetry from STM32F722 at 50Hz
Parses exact firmware format: {"p","r","e","ig","m","s","y"} (all ×10 ints)
State enum: 0=DISARMED, 1=ARMED, 2=TILT_FAULT (matched to balance_state_t)
- Publishes sensor_msgs/Imu on /saltybot/imu (pitch/roll/yaw as angular_velocity)
- Publishes std_msgs/String on /saltybot/balance_state (full PID JSON diagnostics)
- Publishes diagnostic_msgs/DiagnosticArray on /diagnostics (OK/WARN/ERROR by state)
- Auto-reconnects on serial disconnect; IMU fault frames → ERROR diagnostic
- launch/bridge.launch.py with serial_port + baud_rate launch args
- config/bridge_params.yaml (921600 baud, /dev/ttyACM0)
- test/test_parse.py: 8 unit tests covering normal, fault, edge cases (all pass)
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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2026-02-28 17:11:02 -05:00 |
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c47ac41573
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feat: Jetson Nano platform setup and Docker env (bd-1hcg)
- Dockerfile: L4T R32.6.1 (JetPack 4.6) base + ROS2 Humble + SLAM stack
(slam_toolbox, Nav2, rplidar_ros, realsense2_camera, robot_localization)
- docker-compose.yml: multi-service stack (ROS2, RPLIDAR A1M8, D435i, STM32 bridge)
with device passthrough, host networking for DDS, persistent map volume
- docs/pinout.md: full GPIO/I2C/UART pinout for STM32F722 bridge (USB CDC +
UART fallback), RealSense D435i (USB3), RPLIDAR A1M8, udev rules
- docs/power-budget.md: 10W envelope analysis with per-component breakdown,
mitigation strategies (RPLIDAR gating, D435i 640p, nvpmodel modes)
- scripts/setup-jetson.sh: host one-shot setup (Docker, nvidia-container-runtime,
udev rules, MAXN power mode, swap)
- scripts/build-and-run.sh: build/up/down/shell/slam/status helper
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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2026-02-28 12:46:14 -05:00 |
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