Open Source RoboticsRobots, software & field notes

Hexy

Based on published sources · Not tested by us ·

Overview

Historical six-legged servo robot with available frame designs, Servotor32 control sources and a Python 2-era host application. [S005] [S009] [S010] [S013]

Hexy is ArcBotics' historical six-legged robot, with 18 leg servos and one head servo. The kit description lists 20 servos because one is a spare. Its frame repository, Servotor32 controller repository and PoMoCo host software are separate artifacts; downloading the frame does not supply a verified current software environment. [S005] [S009] [S010]

Specifications

DetailDescription
TypeSix-legged servo hexapod
Reported by source [S005] · Checked 2026-10-01
Intended usersBuilders restoring legacy Hexy kits and studying hexapod mechanisms
Editorial assessment [S001] · Checked 2026-10-01
AssemblyNot known
CalibrationCenter servos before fitting horns and preserve joint-to-port mapping; firmware example centers ports 0–3.
Reported by source [S006] [S012] · Checked 2026-10-01
Operating systemNot known
Computer neededComputer with compatible legacy PoMoCo Python environment and USB or Bluetooth serial link
Reported by source [S010] [S013] · Checked 2026-10-01

3D preview

Preview not available yet. A model has not yet been prepared and approved for display on this page. This does not mean the project lacks CAD files; see Source files and licenses for the reviewed source availability.

Assembly and use

Centering and port assignment matter during assembly

The archive includes native SolidWorks parts and assemblies alongside STEP, STL and DXF files. The assembly guide describes repeated leg construction, fitting servo horns while the joints are centered, and connecting each joint to its assigned controller port. File presence was checked, but dimensions, material fit and fabrication completeness were not validated. [S006] [S014]

The preserved Servotor32 example initially disables all servo outputs, then commands ports 0–3 to a 1500 pulse setting before processing serial input. That supports the guide's centering workflow for this particular example. It does not establish what firmware is installed on an existing board, and centering before horn attachment does not replace later joint-offset checks. [S006] [S012]

Identify the power arrangement before following a guide

The original power guide distinguishes servo and logic supplies. It gives a 4.8–7 V board servo-power range, recommends rechargeable NiMH/NiCd cells rather than alkaline packs, and describes resets when servo load pulls the shared supply down. Its external-supply example is regulated 5 V with at least 5 A capability. Those historical board limits are not an endorsement of an unidentified replacement servo. [S007]

The later power-board kit replaces the original black AA holders and changes the battery-shelf spacing. Its guide says a separate logic supply should normally be unnecessary with that kit, unlike the older battery-only arrangement. Keep those instructions separate: a different power board changes both mounting and the assumptions behind troubleshooting a reset. Current kit availability and a complete delivered budget remain unknown. [S006] [S007] [S008]

The preserved software is a legacy stack

PoMoCo's README describes 9600-baud communication and matching historical firmware changes. The preserved Servotor32 initialization also uses 9600 baud and attempts to reconfigure an attached Bluetooth module before switching its serial rate. A board or adapter with different firmware/settings needs explicit reconciliation. No serial connection or Bluetooth configuration was tested here. [S010] [S011]

The host entrypoint uses Python 2-style print statements, and its GUI imports Tkinter and ConfigParser under their older names. The serial code also imports pyserial and uses time.clock. These sources should not be presented as a tested current Python 3 installation. PoMoCo loads motion files from its Moves directory; inspect the joint mapping and motion definitions before running them on a restored mechanism. No host application or motion script was executed. [S010] [S013]

Hardware and software licenses need separate treatment

Hexy's frame README and Servotor32's hardware declaration name Creative Commons Attribution-ShareAlike 3.0 United States, but link to the unported 3.0 URL. That jurisdiction mismatch remains unresolved. The available CAD and board files are therefore recorded separately from a confirmed exact hardware license; this review does not silently choose one version. [S001] [S009] [S014]

Servotor32's software and PoMoCo have MIT terms in their respective READMEs, subject to any separately applicable third-party notices. The website guides establish historical assembly and power instructions, not current stock or permission to republish every photograph. No parts were fabricated, board flashed, servos calibrated or walking performance measured for this entry. [S005] [S006] [S009] [S010]

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 · License not fully assessed
CC BY-SA 3.0 is declared, but README names United States while linking unported 3.0. Exact jurisdiction-specific license remains unresolved; no fabrication or geometry validation. [S001] [S009] [S014]
electronicsavailable · License not fully assessed
CC BY-SA 3.0 is declared, but README names United States while linking unported 3.0. Exact jurisdiction-specific license remains unresolved; no fabrication or geometry validation. [S001] [S009] [S014]
firmwareavailable · MIT
Project README includes MIT terms; bundled third-party notices retain their scope. No current toolchain or execution verification. [S009] [S014]
softwareavailable · MIT
Project README includes MIT terms; bundled third-party notices retain their scope. No current toolchain or execution verification. [S010] [S014]
documentationavailable · License not fully assessed
Official historical guides are accessible; website prose/media reuse terms not established. [S005] [S006] [S007] [S008]

Selected programmed-servo route requires no learned model or dataset.

References

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

  1. S001 · ArcBotics / project contributors
    Upstream project overview
    Accessed 2026-10-01 · README
    Source notes

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

  2. S002 · ArcBotics / project contributors
    Repository revision and release metadata
    Accessed 2026-10-01 · 24f102c8ee4b9c28789e41e2c1284f9aa9e3df9c
    Source notes

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

  3. S004 · ArcBotics / project contributors
    Pinned repository artifact inventory
    Accessed 2026-10-01 · 24f102c8ee4b9c28789e41e2c1284f9aa9e3df9c archive file inventory
    Source notes

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

  4. S005 · ArcBotics / project contributors
    Historical official overview
    Accessed 2026-10-01 · Preserved official page; historical configuration, not current stock evidence
    Source notes

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

  5. S006 · ArcBotics / project contributors
    Historical official assembly
    Accessed 2026-10-01 · Preserved official page; historical configuration, not current stock evidence
    Source notes

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

  6. S007 · ArcBotics / project contributors
    Historical official power
    Accessed 2026-10-01 · Preserved official page; historical configuration, not current stock evidence
    Source notes

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

  7. S008 · ArcBotics / project contributors
    Historical official power-board
    Accessed 2026-10-01 · Preserved official page; historical configuration, not current stock evidence
    Source notes

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

  8. S009 · ArcBotics / project contributors
    Servotor32 source and licensing
    Accessed 2026-10-01 · 879d1223cb3295015c16d9c7d433111c74f0366e README
    Source notes

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

  9. S010 · ArcBotics / project contributors
    PoMoCo source and licensing
    Accessed 2026-10-01 · 385470d2f08041a4a824ff35ec4399514cfcb27a README
    Source notes

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

  10. S011 · ArcBotics / project contributors
    Servotor32 initialization
    Accessed 2026-10-01 · 879d1223cb3295015c16d9c7d433111c74f0366e lines1-80
    Source notes

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

  11. S012 · ArcBotics / project contributors
    Firmware example startup
    Accessed 2026-10-01 · 879d1223cb3295015c16d9c7d433111c74f0366e firmware example
    Source notes

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

  12. S013 · ArcBotics / project contributors
    PoMoCo host requirements
    Accessed 2026-10-01 · 385470d2f08041a4a824ff35ec4399514cfcb27a entrypoint and GUI/serial imports
    Source notes

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

  13. S014 · ArcBotics / project contributors
    Combined file inventories
    Accessed 2026-10-01 · Complete preserved archive filenames
    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 2026-10-01 · Sources checked 2026-10-01 · Next review target 2026-10-31

Revision: 24f102c8ee4b9c28789e41e2c1284f9aa9e3df9c (commit snapshot; no published stable release found). Combined hardware and software repository activity recorded 2019-05-07 [S002]

Correction guidance · Discussion is not enabled · Profile format 0.6.0-draft.1

Change history