SO-101 Leader Arm Electronics Kit
Power and control your SO-101 leader arm with this specialized electronics package based on the LeRobot SO-ARM100 specifications.
This kit includes everything needed to operate the leader arm (the arm you physically control): 6 high-torque 7.4V serial bus servos, a 5V regulated power supply, a Serial Bus Servo, and all necessary wiring harnesses and connectors.
Important: Leader and follower arms require different electronics due to voltage differences. This kit is specifically for the LEADER arm. For the follower arm (with gripper), you need the Follower Arm Electronics Kit which uses 12V servos.
The 7.4V servos are optimized for smooth human manipulation. These arms are designed to work seamlessly with the open‑source 🤗 LeRobot library.
Perfect for:
- Completing your Leader Arm Frame Kit
- Building teleoperation systems (pair with follower electronics)
- Replacement or upgrade for existing leader arm
- Educational robotics demonstrations
Note: This is specifically for the LEADER arm. For complete teleoperation, you also need the Follower Arm Electronics Kit.
Ships in 2–5 business days
Fulfilled by Amazon from US warehouses. Tracking emailed once the box is on the truck.
30-day return on defects
If a part arrives damaged or wrong, reply to your order email — we make it right. See full terms.
Open-source by design
Every part matches the upstream LeRobot SO-ARM100 spec. Swap, modify, and share freely.
Open-Source Design
This kit is based on SO-ARM100 (LeRobot Project) by Hugging Face and LeRobot Community.
Key Features
- 6x 7.4V high-torque serial bus servos
- Optimized for smooth human manipulation
- 5V regulated power supply
- Pre-configured microcontroller for leader operation
- All wiring and connectors included
- Pre-calibrated servos with position sensing
- USB-C computer connection
- Compatible with LeRobot software
- No soldering required
Technical Specifications
| SKU | SO-101-LEADER-ELEC |
| Servos | 6x Feetech STS3215 Serial Bus Servos (7.4V) with different gear ratios: 1x 1/345, 2x 1/191, 3x 1/147 |
| Torque Rating | 20 kg·cm per servo |
| Microcontroller | Pre-configured for leader arm operation |
| Power Supply | 5V 4A power adapter with barrel connector |
| Connectivity | USB-C to host computer |
| Wiring | Complete harness JST connectors |
| Compatibility | Designed for SO-101-LEADER-FRAME |
| Arm Type | Leader arm (human-controlled) |