# Primo 3D model: licence

`primo.glb` is converted from the Primo humanoid's robot description by **Alessio Pagliai and the River Family contributors** (github.com/AlessioPagliai/primo, commit 6060390b3390fab388968b0a30ba4f92f2e05bbd, `sim/urdf/primo.urdf` and its meshes in `sim/urdf/meshes/`).

- Original licence: CC0 1.0 Universal, https://creativecommons.org/publicdomain/zero/1.0/legalcode (the project's `LICENSE.md`). The authors waived their copyright, so no notice is required; this credit is given anyway. The Isaac Lab task code in `sim/isaaclab/code/` is BSD-3-Clause and is not used here.
- CC0 does not cover rights other people hold in third-party parts. The project does not share the motor, hand and camera makers' CAD files; its motors are the project's own size-and-bolt-pattern stand-ins, and its hand and camera shapes are reference shapes of the bought parts (Inspire Robots RH56DFX hands, RealSense D436 camera). The dataset shows them only as simplified outer shapes. RobStride, Inspire Robots, RealSense and NVIDIA are their owners' trademarks.
- Changes made: meshes simplified (meshoptimizer); 142 tiny hand fragments from the hand export left out; the rod-end meshes split into their separate solids; the motors' output faces carved out so they can be coloured silver; four ankle push rods drawn in (10 mm rods between the motor cranks and the foot, where the project's model has none); every piece recoloured in a neutral printed-carbon-fibre-nylon grey with black motors (the project shows no finished colours); packed into one glTF file in the URDF's zero pose.
- Primo is a design. It has not been built; its walking exists only in simulation.