Open-Gripper-mini
Based on published sources · Not tested by us ·
Overview
Compact rack-driven gripper with an assembly STEP and upstream build photo; exact actuator, BOM and control integration still need to be specified. [S001] [S003] [S004]
Open-Gripper-mini is a compact rack-driven gripper design for builders who can finish the mechanical and control integration themselves. The preserved source supplies an assembly STEP and a photograph of a physical build, but not a matched purchasing and commissioning package. Treat it as a design starting point, not a ready-to-reproduce kit. [S001] [S003] [S004]
3D preview
Open-Gripper-mini assembly. Assembly geometry from the upstream STEP; includes represented motor and mounting hardware. Exact actuator, bill of materials and host-arm fit remain unverified.
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Download original STEP · File checksums and provenance
Source, license and scale
Source: N-B-Studio, revision 794cd3a623d686796c85b360036860fa97d3fb0d. Original and preview: Apache-2.0. Preview conversion by Open Source Robotics; original file unchanged. STEP preview triangulated in millimetres. No physical part tested.
Confirm scale and manufacturing settings before printing.
Specifications
| Detail | Description |
|---|---|
| Type | Compact rack-driven parallel gripper Editorial synthesis of inspected sources; not physical qualification. Editorial assessment [S003] [S004] · Checked 2026-09-30 |
| Intended users | Builders able to inspect CAD, source parts and reconcile control integration. Editorial assessment [S001] · Checked 2026-09-30 |
| Assembly | README suggests 20% infill and M2/M3 fasteners; complete BOM and assembly sequence not found. Editorial synthesis of inspected sources; not physical qualification. Editorial assessment [S001] [S003] · Checked 2026-09-30 |
| Calibration | Not known |
| Operating system | Not known |
| Computer needed | Not known |
Assembly and use
What is actually in the download
The README says that STEP, SLDPRT and ready-to-print STL files are provided. In the named 3D file directory, however, this snapshot contains only 3d-model.step and a short text file. Other CAD files in the archive belong to vendor motor/controller references. Do not count those as a missing gripper print set: isolate the required gripper bodies from the assembly and establish their print exports before fabrication. [S001] [S003]
The README suggests 20% infill and M2/M3 fasteners, but it does not give a complete gripper BOM, exact actuator designation, material-specific print settings or a dimensioned host-arm interface. The build photograph shows one implementation, not a source-backed substitute for those missing specifications. Confirm the motor envelope, rack travel, bearings, fastener lengths and mounting pattern in CAD before ordering parts. No current complete build cost is established. [S001] [S003] [S004]
Keep vendor examples separate from a control solution
The README explicitly describes the STM32-H723 examples as unrelated to the gripper mechanics. The archive also contains vendor motor documentation, examples and controller CAD under Document/. Their presence does not establish a validated motor, power supply or matched controller for this gripper. A build still needs a chosen actuator, driver, wiring, travel limits and control interface; no compilation or powered setup was performed for this profile. [S001] [S003]
The root Apache-2.0 license supports reuse of the first-party design and supplied project image with its notice. It does not establish manufacturing rights for purchased components or relicense all bundled third-party vendor material. The photograph is credited to the upstream project; the interactive preview shows the separate assembly geometry. Neither is a test of grip force, payload or cobot/delta compatibility. [S002] [S003] [S004]
Cost
No current, complete configuration-specific build cost has been established for this profile.
Source files and licenses
Licensed first-party mechanical design and documentation; purchased components and a matched working build remain separate checks.
| Layer | Availability / license |
|---|---|
| mechanical design | available · Apache-2.0 First-party project files under root license; vendor artifacts and purchased-component manufacturing not included in this grant assessment. [S002] [S003] |
| electronics | not found · License not fully assessed A revision-matched gripper solution was not established; unrelated STM32 examples and vendor references are not treated as that solution. [S001] [S003] |
| firmware | not found · License not fully assessed A revision-matched gripper solution was not established; unrelated STM32 examples and vendor references are not treated as that solution. [S001] [S003] |
| software | not found · License not fully assessed A revision-matched gripper solution was not established; unrelated STM32 examples and vendor references are not treated as that solution. [S001] [S003] |
| documentation | available · Apache-2.0 First-party project files under root license; vendor artifacts and purchased-component manufacturing not included in this grant assessment. [S002] [S003] |
No learned model or dataset required by the documented mechanical design.
References
Links identify the documentation and revisions used in this profile. Access dates record when each source was retrieved.
- S001 · N-B-Studio
Project description and build outline
Accessed 2026-09-30 · README.md at 794cd3a623d686796c85b360036860fa97d3fb0dSource notes
Pinned source and artifact inspection; no hardware test.
- S002 · N-B-Studio
Repository license
Accessed 2026-09-30 · LICENSE at 794cd3a623d686796c85b360036860fa97d3fb0dSource notes
Pinned source and artifact inspection; no hardware test.
- S003 · N-B-Studio
Preserved artifact inventory
Accessed 2026-09-30 · @inventory at 794cd3a623d686796c85b360036860fa97d3fb0dSource notes
Pinned source and artifact inspection; no hardware test.
- S004 · N-B-Studio
Upstream build photograph and preview inspection
Accessed 2026-09-30 · @media at 794cd3a623d686796c85b360036860fa97d3fb0dSource notes
Pinned source and artifact inspection; no hardware test.
Correction guidance · Discussion is not enabled · Profile format 0.6.0-draft.1