Worked as advertised, i bought it because my Apartment doesnt fit a 3D Printer, and i like the documentation that came with it. cool open source project
Robot Arms
SO-101 Robot Arm Kit
A curated SO-101 kit ecosystem for builders who want complete hardware, electronics only, or professionally printed structural parts.
4.3/5
11 reviews
Choose how to build it
What's included
- • Configured electronics set
- • Configured printed structural set
- • Assembly documentation access
In stock in Switzerland. Usually dispatched within 1–2 working days.
Free shipping in Switzerland & LiechtensteinCustomer reviews
4.3/5 · 11 reviews
Lebensretter gerade vor dem Semester lol
überrascht über die gueti druckquali
Ein teil hatte einen kleinen Druckfehler, aber mir wurde ein Ersatzteil geschickt, guter service
lieferig hett lowk lang brucht aber suscht isch guet gsi, empfehle
die layerlines waren in manchen Ecken der 3D gedruckten Teile mehr bemerkbar
Lieferung brauchte 1 tag länger als angezeigt,
SO-101 configuration
Exactly what is included
| Component | Full Kit | Electronics Only | Printed Parts Only |
|---|---|---|---|
| Servos | 12 total: 7× Feetech STS3215 C001, 7.4 V, 1:345; 2× C044, 7.4 V, 1:191; 3× C046, 7.4 V, 1:147 | 12 servos with the same ratios as the complete kit | None |
| Power supplies | 2× 5 V / 5 A EU power supply | 2× 5 V / 5 A EU power supply | None |
| Controllers | 2× bus-servo controller / adapter board | 2× bus-servo controller / adapter board | None |
| Cables | 2× 1 m USB-A to USB-C cable | 2× 1 m USB-A to USB-C cable | None |
| Printed structure | Complete leader and follower printed-part sets | None | Complete leader and follower printed-part sets |
| Assembly state | Supplied as a build kit; electronics and printed parts are not assembled | Electronics supplied for your own build | Printed, checked, and sorted; not assembled |
| Compatibility | SO-101 leader + follower arms and Hugging Face LeRobot | SO-101 electronics configuration and LeRobot | Current SO-101 leader/follower printed structure |
| Dispatch | In stock; 1–2 working days | In stock; 1–2 working days | Made to order; 2–4 working days |
| Shipping | Free shipping to Switzerland and Liechtenstein | Free shipping to Switzerland and Liechtenstein | Free shipping to Switzerland and Liechtenstein |
See the SO-101
Example video
A short look at the SO-101 in action.
▶Watch the SO-101 in action ↗
Technical reference: TheRobotStudio SO-ARM100 BOM and sourcing guide ↗
SO-101 Accessories
Accessories & upgrades

3D printed upgrade
SO-101 Wrist Camera Mount
CHF 19.95 standalone
CHF 12.95 when added with an SO-101

Standalone print pack
SO-101 Overhead Camera Tower
CHF 49.95 standalone
Open-source source
Standard Open SO-100/SO-101 Arms
RobotEd is an independent seller and is not an official upstream-project partner.
Build it your way
The free model files, build resources, and upstream source remain accessible whether you buy a kit or source everything yourself.
Download free model files →Specifications
- Project
- SO-101 open-source robot arm
- Currency
- CHF
- Shipping
- Switzerland
