Open Source RoboticsRobots, software & field notes

Thor

Based on published sources · Not tested by us ·

Overview

A printable six-degree-of-freedom teaching arm with editable FreeCAD, STEP and STL mechanical sources. [S001]

Thor offers editable FreeCAD designs alongside STEP and STL files, making it a candidate for teaching how an arm is constructed as well as how it moves. The reviewed mechanical source is release v2.1.1. Its repository applies CC BY-SA 4.0 to the included files. [S001] [S002] [S003]

Specifications

DetailDescription
TypeArticulated six-axis arm
Reported by source [S001] · Checked 2026-09-30
Intended usersRobotics educators; Makers able to assemble and configure an arm
Editorial assessment [S001] · Checked 2026-09-30
AssemblyNot known
CalibrationNot known
Operating systemNot known
Computer neededNot known
Assembly and use

Start from the release, not the README's branch links

The README's directory links point at the development branch. For a reproducible build, use the design files from the pinned release and record any later changes separately. The README also marks its wiki as deprecated and directs builders to the project website for updated manuals; an old wiki parts list should not silently become a current procurement plan. [S001] [S002]

A mechanical archive is not a complete controller configuration

Upstream names FreeCAD, KiCad and GRBL as design/control tools. The mechanical release does not by itself establish the exact PCB, firmware revision, host software or calibration procedure for a working arm. Those need matching before ordering electronics or promising a supported setup. [S001]

The overview's material-cost claim and payload description are upstream estimates and specifications, not a current delivered quote or our measurements. We have not established the cost of an exact first-working configuration, printed its parts or verified its motion. [S001]

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.

LayerAvailability / license
mechanical designavailable · CC-BY-SA-4.0
README explicitly applies CC BY-SA 4.0 to files in this repository; external firmware/tools have separate terms. [S001] [S003]
electronicsnot found · License not fully assessed
Not found in the inspected primary mechanical archive. README references external controller tools; their complete artifacts and licenses remain to be collected. [S001]
firmwarenot found · License not fully assessed
Not found in the inspected primary mechanical archive. README references external controller tools; their complete artifacts and licenses remain to be collected. [S001]
softwarenot found · License not fully assessed
Not found in the inspected primary mechanical archive. README references external controller tools; their complete artifacts and licenses remain to be collected. [S001]
documentationavailable · CC-BY-SA-4.0
Repository documentation scope only; linked website not covered by this inference. [S001] [S003]

This reviewed configuration covers the arm, without a specific learned policy or dataset.

References

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

  1. S001 · AngelLM / 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.

  2. S002 · AngelLM / project contributors
    Repository revision and release metadata
    Accessed 2026-09-30 · dee17a7205da548f60bd1bdc3f25506a7af50ad8
    Source notes

    Source text inspected for the cited scoped claims; see profile claim notes.

  3. S003 · AngelLM / project contributors
    Repository license
    Accessed 2026-09-30 · LICENSE
    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: dee17a7205da · Activity recorded 2021-09-23 [S002]

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

Change history

September 29, 2026 — First research profile published.