reBot Arm B601
Based on published sources · Not tested by us ·
License: CERN-OHL-W-2.0 · Details by part
Overview
Seeed Studio 6+1 DoF desktop arm with CNC aluminium and printed parts, published as B601-DM (Damiao motors, 24 V) and B601-RS (RobStride motors, 48 V) under CERN-OHL-W-2.0 hardware terms. [S001] [S004] [S005]
Seeed Studio's reBot-DevArm repository publishes two arms with the same appearance: the B601-DM with Damiao motors and the B601-RS with RobStride motors. This entry treats the B601-DM v1.1 BOM as the reviewed configuration and notes where the RS differs. Seeed sells kits and preassembled arms, and the repository supplies STEP files, BOMs and assembly notes for building one. This is source research only; nothing was built, powered or tested. [S001] [S004] [S005]
Specifications
| Detail | Description |
|---|---|
| Type | Desktop serial arm, 6 DOF plus a rack-driven parallel gripper on an MGN9 rail. Reported by source [S001] [S004] · Checked 2026-10-05 |
| Intended users | Developers and labs able to source CNC metal parts and CAN-bus motors, or buy Seeed kits, and work with ROS 2, LeRobot or Python control Editorial assessment [S001] [S004] · Checked 2026-10-05 |
| Assembly | Printed, CNC and purchased parts per BOM; assembly video and steps hosted on the Seeed wiki (not inspected). Reported by source [S001] [S004] · Checked 2026-10-05 |
| Calibration | Not known |
| Operating system | Not known |
| Computer needed | Not known |
3D preview
Preview not available yet. Design-source links are available. A configuration-matched assembly and its file-level reuse scope have not yet been reviewed for a hosted preview.
Model sources
Design-source links are available. A configuration-matched assembly and its file-level reuse scope have not yet been reviewed for a hosted preview.
Assembly and use
Published specifications and Seeed's own tests
The README lists, for the DM and RS respectively: 1.5 kg and 2.5 kg payload, 767 mm and 754 mm maximum reach, about 4.5 kg and 6.7 kg arm weight, under 0.2 mm repeatability, 6 DOF plus a gripper, and DC 24 V and 48 V supply. [S001]
Seeed's performance document for the DM with Damiao V4 motors reports that its tests stopped on motor #2 overheating. With 1.5 kg, reciprocating motion over 5 to 70% of reach ran more than two hours before a manual stop, while static holds triggered overheat protection after 18 minutes at 70% extension and 3 minutes at full extension. It recommends 1.5 kg or less, under 70% of reach, active cooling, and a 10 to 15 minute rest after two hours. The document equates 70% with 450 mm, which does not match 70% of the README's 767 mm reach; that basis is unresolved. These are the vendor's results, not catalog measurements. [S001] [S006]
What a DM builder must source
The v1.1 BOM lists printed ABS and PLA parts (reference average US$50), CNC-machined 5052 aluminium parts (reference average US$250, some printable to cut cost), four DM4310 (V4) motors at US$120 and three DM4340P (V4) motors at US$175 as reference prices, a CAN-USB board, bearings, an MGN9 rail, a gear and many screws. Screws need hot-melt glue as a thread lock. The arm ships without a power supply; the BOM proposes a Mean Well LRS-350-24 in a printed enclosure, with AC wiring the builder crimps. Seeed warns that this BOM is not its shipping version. [S004]
Check file versions before fabricating: the DM file list names reBot_B601_DM_v1.1_20260415.step, while the changelog and repository tree show 20260425 and 20260625 assembly files. The RS BOM swaps in four RS00 and three RS06 motors (US$125 and US$210 reference) and a 48 V LRS-600-48 supply. [S004] [S005] [S008]
Cost scope
No BOM total is published. At the listed reference prices the seven DM motors alone come to US$1,005 (our arithmetic), before metal, prints, bearings and power. The preserved Seeed store page lists a DM body motor kit at US$994.80, body structure kit at US$202.80, gripper kit at US$238.80 and power adapter kit at US$64.99; the page's default warehouse and stock state were not established. [S004] [S011]
Software and licensing boundaries
The roadmap marks ROS 2, LeRobot, Isaac Sim and Pinocchio integrations as done, with guides on Seeed's wiki, and links a Python SDK to a separate Motorbridge site and web UI; none of those pages were inspected. The preserved Pinocchio control repository requires Python 3.10 to 3.11 and motorbridge; no license file was identified in it. URDF and STL meshes are provided, without a complete MuJoCo scene. [S001] [S007] [S010]
The LICENSE file contains CERN-OHL-W 2.0. The README assigns CERN-OHL-W-2.0 to hardware and Apache-2.0 to "Firmware Code", yet no Apache text file or firmware source was identified in the repository tree. It also says the project used a non-commercial CC BY-SA NC license for its first five months and switched to CERN-OHL-W on May 11, 2026, so earlier copies carried different terms. OSHWA lists certification CN000024, dated May 14, 2026. [S001] [S003] [S008] [S009]
The full repository exceeded the 150 MiB intake limit, so only selected documents and the file tree were preserved; STEP geometry was not inspected. The reviewed commit, 5d1aef6 of October 5, 2026, had 4,335 GitHub stars at retrieval, a dated popularity signal only. [S002] [S008]
Cost
| Version | Price |
|---|---|
| reBot Arm B601-DM unassembled kit with gripper (motor, structure and gripper kits) | USD 1436.40 [S011] Vendor price |
Not determined (page lists CN, US and DE warehouses) · Checked 2026-10-05
| Included | Body motor kit; Body structure kit; Gripper kit |
|---|---|
| Not included | Power adapter kit (listed at US$64.99); Clamps; Leader arm (Star Arm 102 listed at US$240.00); Cameras and host computer; Shipping, duties and taxes |
| Stock | Stock state not established from the static page. |
| Delivery and tax | Store page notes duties/taxes may apply on DAP shipments; delivered total not established. |
Price details
Sum (our arithmetic) of three component prices shown on the preserved static store page: body motor kit US$994.80, body structure kit US$202.80, gripper kit US$238.80. Default warehouse/region and stock not determined; dynamic selections not executed.
Not determined (page lists CN, US and DE warehouses) · Checked 2026-10-05 · Quantity 1
Power supply, host computer; leader arm for teleoperation.
Source files and licenses
CERN-OHL-W-2.0 hardware files, BOMs and URDFs are published; firmware source and a licensed software repository were not identified, and the full archive could not be preserved.
| Layer | Availability / license |
|---|---|
| mechanical design | available · CERN-OHL-W-2.0 STEP part and assembly files for DM and RS in the repository tree; full archive not preserved (size) and geometry not inspected. Earlier revisions were under CC BY-SA NC per README. [S001] [S003] [S008] [S009] |
| electronics | not found · License not fully assessed Purchased motors with built-in drivers, CAN-USB board and harnesses; no custom electronics design files identified in the tree. [S004] [S008] |
| firmware | not found · License not fully assessed README assigns Apache-2.0 to "Firmware Code", but no firmware source was identified in the repository tree; motors run vendor firmware. [S001] [S008] |
| software | available · License not fully assessed reBotArm_control_py preserved; no license file identified in it. Other SDK, ROS 2, LeRobot and Isaac Sim repositories and wiki pages not inspected. README and OSHWA state Apache-2.0 for software, but no license file in the inspected software repository. [S001] [S010] |
| documentation | available · CERN-OHL-W-2.0 Repository BOM and specification documents; OSHWA lists documentation under CERN-OHL-W-2.0. Wiki documentation not inspected. [S001] [S009] |
No trained policy weights distributed in the inspected sources.
No dataset distributed in the inspected sources.
References
Links identify the documentation and revisions used in this profile. Access dates record when each source was retrieved.
- S001 · Seeed Studio / reBot-DevArm contributors
reBot-DevArm README
Accessed 2026-10-05 · README.md at 5d1aef60c6f4843217776b2c1290801fdd22b485; preserved snapshot sha256 c9e1cd73ee84… of the pinned raw file (full repository archive blocked by size)Source notes
Two arm models, store links, roadmap/status, hardware specification table, optional hardware, license section.
- S002 · Seeed Studio / reBot-DevArm contributors
Repository revision and acquisition metadata
Accessed 2026-10-05 · 5d1aef60c6f4843217776b2c1290801fdd22b485; commit date 2026-10-05T05:48:28Z; manifest retrieved 2026-10-05Source notes
No published release; archive blocked by the 150 MiB intake limit; dated repository popularity.
- S003 · Seeed Studio / reBot-DevArm contributors
Repository LICENSE file
Accessed 2026-10-05 · LICENSE; preserved snapshot sha256 e258a9c6833b… of the pinned raw file (full repository archive blocked by size)Source notes
CERN-OHL-W 2.0 license text.
- S004 · Seeed Studio / reBot-DevArm contributors
reBot Arm B601-DM hardware specification and BOM
Accessed 2026-10-05 · hardware/reBot_B601_DM/readme.md; preserved snapshot sha256 1a7bf885b42a… of the pinned raw file (full repository archive blocked by size)Source notes
Version table, printed, CNC and purchased parts with reference prices, power supply option and warnings.
- S005 · Seeed Studio / reBot-DevArm contributors
reBot Arm B601-RS hardware specification and BOM
Accessed 2026-10-05 · hardware/reBot_B601_RS/README.md; preserved snapshot sha256 0573cd1132d6… of the pinned raw file (full repository archive blocked by size)Source notes
RS version table, motors and power supply with reference prices.
- S006 · Seeed Studio / reBot-DevArm contributors
reBot Arm B601-DM performance testing reference
Accessed 2026-10-05 · Performance_Testing.md (v1.0, 2026.04.01); preserved snapshot sha256 aca81d5e96e6… of the pinned raw file (full repository archive blocked by size)Source notes
Seeed's dynamic and static load tests, termination reasons and usage recommendations.
- S007 · Seeed Studio / reBot-DevArm contributors
reBot Arm mechanical description package
Accessed 2026-10-05 · Rebot_Arm_description/README.md; preserved snapshot sha256 b2957dd49964… of the pinned raw file (full repository archive blocked by size)Source notes
URDF and STL meshes for RS and DM; no complete MJCF scene.
- S008 · Seeed Studio / reBot-DevArm contributors
Repository file tree at the reviewed commit
Accessed 2026-10-05 · GitHub git/trees API, recursive, 470 entries, not truncated; filenames and sizes onlySource notes
Hardware STEP, URDF/mesh, media and community files; no firmware or software source files.
- S009 · Open Source Hardware Association (certification listing for Seeed Studio)
OSHWA certification CN000024
Accessed 2026-10-05 · Certification page snapshot sha256 6154545aaad1…Source notes
Certification date, version and declared hardware, software and documentation licenses.
- S010 · Seeed Studio / reBotArm_control_py contributors
reBotArm_control_py repository
Accessed 2026-10-05 · README.md, pyproject.toml and archive filenames at 6415d43130d1e143c70dc106096a857ac5556f81 (commit snapshot; archive sha256 9c482aa3557b…)Source notes
Pinocchio/motorbridge control package metadata; no license file identified in the archive.
- S011 · Seeed Studio
Seeed Studio reBot Arm B601-DM bundle store page
Accessed 2026-10-05 · Store page snapshot sha256 0d038f7ef0eb… retrieved 2026-10-05; static HTML, default selectionSource notes
Kit component prices as rendered in the static page; warehouse, region and stock state not determined.
Correction guidance · Discussion is not enabled · Profile format 0.7.0-draft.5
Change history
2026-10-05 — Created from Growbotics-listing lead; all claims checked against preserved upstream sources. No physical build or test.