SO-101
by The Robot StudioArmLeRobot: official
The default LeRobot starter arm: a 5-DOF, 3D-printed arm with a gripper, driven by six Feetech STS3215 bus servos. Sold as follower or leader-plus-follower kits by several vendors.
Specs
- Type
- Arm
- Degrees of freedom
- 5
- Actuators
- Feetech
- Hardware license
- Apache-2.0
- Open hardware files
- Yes
- Motors
- 6× Feetech STS3215 (7.4 V or 12 V)
- Simulators
- MuJoCo, Genesis, ManiSkill
- LeRobot types
- so101_follower, so101_leader, bi_so_follower, bi_so_leader
- Docs quality
- 5 of 5 for the build guide, editor's rating
Price and where to get it
$122–$230
One arm ≈ $122; leader + follower pair ≈ $230 (parts only, excl. printing)
KitAssembledDIY / print it
Sold by
Project
- Website
- github.com
- Source
- TheRobotStudio/SO-ARM100
- Docs
- huggingface.co
Activity
GitHub stars7.5k
Forks685
Last pushThis month2026-09-06
HF datasets8.0kmatching “so101”
Fetched 2026-09-15. Dataset count is an approximate name match on the Hugging Face Hub, not a ground-truth tally.
Spotted an error in this entry? Send a correction and it will be credited in the changelog.