OpenArm Community & Support

My CAN interface isn't showing up. What do I check?

First verify the CAN USB adapter is recognized: lsusb. Then check if the can0 interface exists: ip link show. If not, run sudo modprobe can && sudo modprobe can_raw. See the SocketCAN setup guide for full troubleshooting.

ROS2 can't find the openarm_ros2 package.

Source your ROS2 workspace: source /opt/ros/humble/setup.bash && source install/setup.bash. Make sure you ran colcon build in the workspace root before sourcing.

The arm moves erratically on first startup.

This is usually a calibration issue. Run the homing procedure before issuing any motion commands. Never skip homing after a power cycle.

What teleoperation device works best with OpenArm?

The Wuji Hand gives the best dexterity match for contact-rich tasks. VR controllers (Meta Quest) work well for pick-and-place. For simple testing, keyboard control is sufficient to verify your setup.

How do I record data in LeRobot format?

See the data logging guide for full configuration options. Quick start: ros2 launch openarm_ros2 record.launch.py output_format:=lerobot task_name:=<your_task>

What AI models are compatible with OpenArm?

ACT, Diffusion Policy, and OpenVLA are all tested and documented. Start with ACT for pick-and-place tasks — it has the most example configurations for OpenArm.