SO-100
Previous SO-ARM revision with the same servos and price class. The SO-101 has improved wiring, easier assembly (no gear removal) and updated leader motors, so new builds should start there.
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)
- Simulators
- MuJoCo
- LeRobot types
- so100_follower, so100_leader
- Docs quality
- 4 of 5 for the build guide, editor's rating
Price and where to get it
$123
Upstream SO100.md US BOM estimate checked 2026-10-20 (the table has no price date): USD 123 for one SO-100 arm with six STS3215 servos. The separate leader-plus-follower BOM is USD 232 for two arms, not a single-arm upper price. 3D printing, cameras and a host computer are not included in these tables; shipping and taxes are unverified. These are source-table estimates, not current delivered kit quotes; prices vary by region.
KitDIY / print it
Sold by
Project
- Website
- github.com
- Source
- TheRobotStudio/SO-ARM100
- Docs
- huggingface.co
Activity
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.