Arm > Articulated arm rb-1-1

Seeed Studio SO-ARM101

Articulated arm by Seeed Studio, Shenzhen, CN

Hobby
Education
Research
Research platform
Shipping

SO-ARM101 is the low-cost 6-axis bus-servo arm designed by TheRobotStudio for the Hugging Face LeRobot ecosystem; Seeed sells it as a kit of Feetech STS3215 servos and driver boards, with 3D-printed parts or fully assembled. The kit is built around a leader arm for teleoperation and a follower arm that records demonstrations, which is how most buyers collect imitation-learning datasets.

Key specifications

Axes

USD 278 at Seeed Studio, seen 2026-10-28 — SO-ARM101 Pro Servo Motor Kit (without 3D printed parts); $271.99 at 10+ units; in stock, ships from US/CN/DE

Maker's product page Documentation Data record

Versions

SO-ARM101 Standard	all servos 7.4 V / 5 V supplies
SO-ARM101 Pro	12 V follower-arm servos (ST3215-C018/C047), 7.4 V leader
SO-ARM101 Pro Servo Motor Kit	servos, driver boards, cables; no 3D-printed parts
SO-ARM101 Pro Assembled Kit	pre-assembled
SO-ARM101 Pro Unassembled Bundle	servo kit + 3D-printed parts + USB camera

All attributes

Arm count	1
Mounting	Table
Segment	Hobby, Education, Research
Application	Research platform, Education
Environment	Indoor
Autonomy	Teleoperated
SDK	Python
Open source	Hardware, Software

Looked for but not confirmed on any fetched page: Payload, Reach, Mass, Repeatability, Release year.

Price history

Seen	Seller	Price	Note
2026-10-28	Seeed Studio	USD 29.90	SO-101 3D Printed Parts only (price shown as add-on on the kit pages)
2026-10-28	Seeed Studio	USD 310	Pro Unassembled Bundle: servo kit + 3D printed parts + 720p USB camera
2026-10-28	Seeed Studio	USD 316	SO-ARM101 Pro Assembled Kit; $309.99 at 10+ units
2026-10-28	Seeed Studio	USD 278	SO-ARM101 Pro Servo Motor Kit (without 3D printed parts); $271.99 at 10+ units; in stock, ships from US/CN/DE

Editor's notes

Unverified (free text): follower-only price. Leader+follower: the Seeed wiki configures 6 follower (F1–F6) and 6 leader (L1–L6) servos, i.e. the kit as documented is a leader+follower pair (12 servos). The Assembled Kit page, however, says it includes "six STS3215 servos", so it may be a single arm — confirm with Seeed before publishing a per-arm price. No follower-only SKU price was found on Seeed. Design files are on GitHub (TheRobotStudio/SO-ARM100); Seeed calls it open-source. An older "SO-ARM101 Low-Cost AI Arm Servo Motor Kit" is cross-listed at $240 on the LeKiwi page. No payload/reach/weight figures on any Seeed page.

Sources

SO-ARM101 Pro Servo Motor Kit — accessed 2026-10-28 (price, specs, other)
SO-ARM101 Pro Assembled Kit — accessed 2026-10-28 (price, specs)
SO-ARM101 Pro Unassembled Bundle — accessed 2026-10-28 (price, variants)
Seeed wiki: SO-Arm LeRobot tutorial — accessed 2026-10-28 (facts, variants, other)

Facts on this page come only from the pages listed above, read on the dates shown. Prices are observations, not offers to sell; check the seller before buying.