SO-100 (SO-ARM100) vs SO-101 (SO-ARM101)
Cost, parts and difficulty side by side.
| SO-100 (SO-ARM100) | SO-101 (SO-ARM101) | |
|---|---|---|
| Cost | $232 to $330 | $230 to $330 |
| Difficulty | beginner | beginner |
| Parts | 6 | 8 |
| 3D printing | yes | yes |
| Kits available | 1 | 5 |
| Made by | TheRobotStudio and Hugging Face | TheRobotStudio and Hugging Face |
| Full list | SO-100 (SO-ARM100) parts list | SO-101 (SO-ARM101) parts list |
SO-100 (SO-ARM100)
The original LeRobot leader and follower arm pair; now deprecated in favor of SO-101 but uses the same servos.
SO-101 (SO-ARM101)
Low-cost 3D printed 6-DOF arm pair (leader plus follower) for teleoperation and imitation learning with LeRobot.
The short answer
SO-101 costs less to start: about $230 against $232 in parts. SO-100 has the shorter parts list (6 lines against 8). Both are rated beginner.
Motors and servos
SO-100
- 12 x Feetech STS3215 7.4V (C001, 1/345)
- 2 x 5V power supply, 5.5x2.1 mm barrel
SO-101
- 7 x Feetech STS3215 7.4V, 1/345 gear (C001)
- 2 x Feetech STS3215 7.4V, 1/191 gear (C044)
- 3 x Feetech STS3215 7.4V, 1/147 gear (C046)
- 2 x 5V power supply, 5.5x2.1 mm barrel
Parts both builds use (5)
- Waveshare Bus Servo Adapter (A) / Serial Bus Servo Driver Board
- USB-C cable, 2-pack
- 5V power supply, 5.5x2.1 mm barrel
- Table clamps 4-pack
- Precision screwdriver set
Building both? These parts carry over, so buying for one covers part of the other.