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Effector Lab

Effector library

Low-cost printed four-finger hand, 8 actuators

A printable humanoid hand: four fingers, two small servos per finger in parallel, flexible shells, about 400 g.

Multi-finger handVisual onlyNot an entrantCC-BY-4.0, Apache-2.0

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Facts

Kind
Multi-finger hand
Class
Open hardware (buildable)
Capabilities
  • pinchholds a part between two opposed tips or pads
  • powerwraps several fingers around a part
Mount
A humanoid wrist; an interface plate for a hobby arm is included.ISO pattern: none (own interface)
  • Designed for a humanoid's wrist; easily adapted (stated upstream).

Specifications

SpecValueBasisSource
Actuated joints8 (2 per finger)SourcedSource
Mass400 gSourcedSource
Parts costunder 200 EURSourcedSource

Simulation

Status
Visual onlyVisual only (no physics)
Fidelity
n/a (no physics)
Reason
The upstream demo model includes servo and fastener meshes of unrecorded provenance; making it an entrant needs a per-mesh review first.
Tournament
Not an entrantThe upstream demo model includes servo and fastener meshes of unrecorded provenance; making it an entrant needs a per-mesh review first.

Licence

Licence rating: green. Full attribution: see the credits page.

Files

FileTypeSizeLicenceChanged
distal.stepassets/effectors/library/hand-4f-8dof-printed/cad/distal.stepCAD49.8 kBCC-BY-4.0as upstream
finger_frame_1.stepassets/effectors/library/hand-4f-8dof-printed/cad/finger_frame_1.stepCAD29.7 kBCC-BY-4.0as upstream
finger_frame_2.stepassets/effectors/library/hand-4f-8dof-printed/cad/finger_frame_2.stepCAD19.8 kBCC-BY-4.0as upstream
gimbal.stepassets/effectors/library/hand-4f-8dof-printed/cad/gimbal.stepCAD45.9 kBCC-BY-4.0as upstream
hand_plate_right.stepassets/effectors/library/hand-4f-8dof-printed/cad/hand_plate_right.stepCAD393.2 kBCC-BY-4.0as upstream
hobby_arm_interface.stepassets/effectors/library/hand-4f-8dof-printed/cad/hobby_arm_interface.stepCAD71.7 kBCC-BY-4.0as upstream
link.stepassets/effectors/library/hand-4f-8dof-printed/cad/link.stepCAD20.7 kBCC-BY-4.0as upstream
proximal.stepassets/effectors/library/hand-4f-8dof-printed/cad/proximal.stepCAD80.9 kBCC-BY-4.0as upstream
wrist_interface_right.stepassets/effectors/library/hand-4f-8dof-printed/cad/wrist_interface_right.stepCAD223.8 kBCC-BY-4.0as upstream

Each file links to its copy in the repository. Licence texts sit next to them in LICENSES/. What changed is on the credits page.

Upstream

Linked, not mirrored

What, and whySizeLink
Full hand CAD (3.5 MB): linked, not mirrored.3.5 MBPinned file