NimbRo-OP2 / OP2X

Based on published sources · Not tested by us · Sources checked 2026-09-30

Overview

Two humanoid soccer research designs with separate CAD, actuator selections and fabrication requirements. [S001]

OP2 and OP2X share a hardware repository, but each has its own CAD directory and bill of materials. Their actuator rows specify 34 MX106 units for OP2 and 34 XM540-W270 units for OP2X. These are actuator counts, not a claim that either robot has 34 independent joint axes. Match the controller, cabling and mechanical files to the chosen variant. [S001] [S005] [S006]

Official website · Source code

Specifications

Detail	Description
Type	OP2 and OP2X humanoid soccer research variants Reported by source [S001] [S005] [S006] [S009] · Checked 2026-09-30
Intended users	Humanoid research laboratories; Teams with mechanical fabrication and ROS integration experience Editorial assessment [S001] · Checked 2026-09-30
Assembly	Not known
Calibration	Not known
Operating system	Not known
Computer needed	OP2 reference NUC7I7BNH excludes RAM/SSD; OP2X reference mini-ITX configuration lists i7-8700T and optional low-profile GTX 1050 Ti Reported by source [S001] [S005] [S006] [S009] · Checked 2026-09-30

Assembly and use

Fabrication choices change the order

OP2 offers machined brass gears or printed alternatives, while printed gears are the default for OP2X. The BOMs point to a durable SLS printing service for gears. OP2 also lists milled and printed neck-part alternatives; buying both would double-count a choice. Both lists call for bearing modifications, including drilling the slewing-ring mounting holes, so the work extends beyond ordering prints and tightening screws. [S001] [S005] [S006]

OP2X's list needs further reconciliation before purchasing. Several fastener quantities are blank, and the section says values and types remain to be verified. It recommends spare master/slave synchronization cables because they tend to break. These are useful maintenance inputs, but neither a completed procurement list nor a measured failure rate. [S006]

The computer configurations also differ. OP2 lists an Intel NUC reference without RAM or SSD. OP2X lists a mini-ITX reference with an i7-8700T, emphasizes the low-current T model and treats the low-profile GTX 1050 Ti as optional for deep learning. Those historical choices need current availability, fit and power checks before substitution. No delivered total has been established. [S005] [S006]

Software is a separate preservation and integration task

The university download page links a separate ROS framework, which we preserved at an immutable commit alongside the hardware archive. Its published installation requirements specify Ubuntu 14.04 and ROS Indigo. That documents a legacy starting point; this review has not established a working modern replacement or reproduced the selected robot's configuration. [S008] [S009] [S010]

The hardware CAD uses CC BY-NC-SA 3.0, while the framework has BSD-3-Clause software terms. A commercial build or parts offer therefore cannot rely on the software license alone. Assembly, calibration, replacement parts and support effort remain to be tested for one exact configuration. [S007] [S008]

Cost

No current, complete configuration-specific build cost has been established for this profile.

Source files and licenses

Available project sources support research coverage; complete build and commercial qualification remain separate.

Layer	Availability / license
mechanical design	available · CC-BY-NC-SA-3.0 CAD terms are noncommercial; software permission does not override hardware terms. [S001] [S007]
electronics	not found · License not fully assessed BOM identifies purchased controllers and actuators; their complete manufacturing and firmware sources were not reconciled. [S004] [S005] [S006]
firmware	not found · License not fully assessed BOM identifies purchased controllers and actuators; their complete manufacturing and firmware sources were not reconciled. [S004] [S005] [S006]
software	available · BSD-3-Clause Separate framework archive preserved; exact robot configuration and complete dependencies not reproduced. [S008] [S009] [S010]
documentation	available · License not fully assessed BOMs and legacy framework documentation inspected; complete revision-matched build procedure unresolved. [S001] [S005] [S006] [S009]

No particular learned policy or training dataset selected for this hardware review.

References

Links identify the documentation and revisions used in this profile. Access dates record when each source was retrieved.

S001 · NimbRo / project contributors
Upstream project overview
Accessed 2026-09-30 · README.md
Source notes
Source text inspected for the cited scoped claims; see profile claim notes.
S002 · NimbRo / project contributors
Repository revision and release metadata
Accessed 2026-09-30 · a38bab234578511220a4d4940209a92644f70636
Source notes
Source text inspected for the cited scoped claims; see profile claim notes.
S004 · NimbRo / project contributors
Pinned repository artifact inventory
Accessed 2026-09-30 · a38bab234578511220a4d4940209a92644f70636 archive file inventory
Source notes
Source text inspected for the cited scoped claims; see profile claim notes.
S005 · NimbRo / project contributors
NimbRo-OP2/NimbRo-OP2_Bill_of_Materials.xls
Accessed 2026-09-30 · Sheet1, all populated rows; extracted read-only from preserved XLS
Source notes
Source text inspected for the cited scoped claims; see profile claim notes.
S006 · NimbRo / project contributors
NimbRo-OP2X/NimbRo-OP2X_Bill_of_Materials.xls
Accessed 2026-09-30 · Sheet1, all populated rows; extracted read-only from preserved XLS
Source notes
Source text inspected for the cited scoped claims; see profile claim notes.
S007 · NimbRo / project contributors
Hardware license
Accessed 2026-09-30 · HARDWARE LICENSE CreativeCommonsLicense CC BY-NC-SA 3.0.txt
Source notes
Source text inspected for the cited scoped claims; see profile claim notes.
S008 · NimbRo / project contributors
Separate ROS framework snapshot and license
Accessed 2026-09-30 · README and LICENSE at e8be8c445ead8c0d470c7998fdc28446ca9eb47a
Source notes
Source text inspected for the cited scoped claims; see profile claim notes.
S009 · NimbRo / project contributors
Framework release requirements
Accessed 2026-09-30 · Installation and Dependencies
Source notes
Source text inspected for the cited scoped claims; see profile claim notes.
S010 · NimbRo / project contributors
University project download links
Accessed 2026-09-30 · Software and Download
Source notes
Source text inspected for the cited scoped claims; see profile claim notes.

Research and review details

Source research only; no installation, physical build or performance test performed. No affiliate links added.

Profile edited 2026-09-30 · Sources checked 2026-09-30 · Next review target 2026-10-30

Combined hardware and software repository revision: a38bab234578 · Activity recorded 2018-09-26 [S002]

Correction guidance · Discussion is not enabled · Profile format 0.5.0-draft.1

Change history

September 29, 2026 — First research profile published.