README.md

metadata

license: cc-by-4.0
pretty_name: Atech module SimReady assets
tags:
  - simulation
  - robotics
  - usd
  - simready
  - isaac-sim
  - mujoco
  - urdf
  - 3d

Atech SimReady modules and boards

3-D simulation assets for every module in the Atech SDK catalog and for the 8-, 10- and 14-port boards. Each top-level folder is one SimReady asset package, in three formats:

atech_<asset>/
├── com.nvidia.simready.packaging.json         package marker (license, BOM hash)
├── .metadata/                                 root USD list, bill of materials (sha256 per file)
├── simready_usd/<asset>.usd                   USD (crate), following NVIDIA SimReady: Isaac Sim / Omniverse
│   └── .thumbs/256x256/<asset>.usd{,_light,_transparent}.png
├── mjcf/<asset>.xml + mjcf/meshes/<asset>/*.stl    MuJoCo
└── urdf/<asset>.urdf + urdf/meshes/<asset>/*.stl   ROS / Gazebo

Asset names are atech_<module id> (e.g. atech_distance_sensor) and atech_board_<board id> (e.g. atech_board_14port).

Generated with atech sim-assets --all --board 8port,10port,14port --fetch (pip install "atech[sim]"), then repackaged one folder per asset. The thumbnails are MuJoCo renders of the MJCF, so they show the CAD's flat material colours, not the USD's PBR shading or the display's screen texture.

What is real and what is not

• Visuals are Atech's production CAD (module-renders release v1.7), with the GLB's own PBR materials. Colliders are boxes: the bounds of that CAD.
• The 8-port board is Atech's CAD of it ("Node 8 Position Motherboard", from Atech's website models), not yet in the module-renders release; its source says so.
• Derived models. The PIR, CO₂ (SCD40), robot-arm and stepper modules have no model in the CAD release. Theirs are built from the CAD that exists plus placeholder parts, and say derived: in every format (atech:visual:source in USD, the MJCF text, the URDF comment). They are not Atech CAD. The CO₂ and robot-arm modules follow Atech's product renders; the PIR is drawn as its AM312 sensor. The robot-arm module plugs into one port, but its housing is two cells long: its connector frame is the centre of the -x cell.
• Masses and inertias are placeholders. Atech has not published them.
• With real CAD, NVIDIA's SimReady validator reports VG.007 warnings: the CAD tessellation has non-manifold vertices.

atech guide sim (in the SDK) documents every attribute and the full layout.