Aloha Mini 2 Pro

AlohaMiniCfg loads the complete AlohaMini/alohamini2pro.urdf asset without renaming its joints or assembling separate arms.

Aloha Mini 2 Pro

from embodichain.lab.sim.robots import AlohaMiniCfg

cfg = AlohaMiniCfg.from_dict({"uid": "aloha_mini"})
robot = sim.add_robot(cfg=cfg)

Control part	DOF	Joints / endpoint
left_arm	6	Shoulder through wrist; left_tcp
right_arm	6	Shoulder through wrist; right_tcp
left_hand	1	left_gripper
right_hand	1	right_gripper
torso	1	vertical_move

The arms use PytorchSolverCfg with the TCP frames authored in the asset. The torso uses a position-only solver; the hands use joint-space commands. The source’s three planar base joints and three wheel joints remain outside these control parts, with position drives that hold their initial positions. Drive gains follow the CobotMagic simulation preset and can be overridden through joint_drive_props.

cfg.build_pk_serial_chain() returns all five parts. Each chain is local to its part: arm poses are relative to left_Base / right_Base, hand poses to the fixed jaws, and torso poses to base_cad_link. Arm chains do not include torso or planar base motion. Hand chains describe moving-jaw poses, while the arm chains describe the grasp TCPs.

Run a headless construction smoke check with:

python -m embodichain.lab.sim.robots.aloha_mini --headless --device cpu

Omit --headless for the interactive simulation window. Select the physics backend with --physics default or --physics newton.

See the API reference.