POPI

POPI is a fully open-source quadruped robot designed and built from scratch by a team of ten mechatronics engineering students at IMT Mines d'Ales in France on a ~4k EUR, six-month budget. The repository is a complete documentation package rather than a printable kit: full CATIA mechanical CAD and 2D drawings, electrical schematics (power board, current sensors, encoder wheels, per-leg wiring), a costed bill of materials, an actuator data sheet, a user manual, and a ROS/C++ control stack built on the TOWR trajectory optimizer. Knee actuation uses TiMOTION linear actuators. The team later pivoted to a 100% 3D-printed successor, Walko. POPI is best treated as an educational/research reference quadruped.

What you get

• A standardized, machine-readable robot schema derived from the source repo.
• A primary assembly 3D asset is available from popi_software/popi/popi_description/xacro/popi.urdf.
• Source-backed bill-of-materials evidence is linked with per-part provenance where available. Prices marked estimated are not yet verified against a vendor.
• A transparent reproducibility score so buildability is a sortable, first-class property.
• Cross-links to the source repo, datasets, models, and forks.

Source

Canonical source: popi-mkx3/popi_project. Original files stay intact and separately licensed under BSD-3-Clause; Motari adds a separate, adjacent metadata layer.