LeRobot SO-101 follower arm · The Robot Studio / LeRobot community
Joints and end effectors that produce the action vector recorded in datasets.
Arm joints
×5Serial-bus smart servo
shoulder pan/lift, elbow, wrist flex/roll
Gripper
×1Servo-driven parallel jaw
printed fingers
The drive units inside those joints, with torque and reduction details.
Feetech STS3215
Serial-bus servo, metal gear
~30 kg·cm at 12 V, position + load feedback
Observation streams available to a policy running on this platform.
Servo position/load
Magnetic encoder in servo
read at control rate
Wrist camera
USB RGB
typical 640×480 @ 30 fps
Overhead camera
USB RGB
scene view for imitation learning
Open-hardware ~$100-class arm; leader-follower teleoperation makes it the cheapest way to record real demonstrations.
Resolving related models, datasets and papers…
Source: UC Berkeley RAIL
Source: Hugging Face LeRobot
Source: Stanford IRIS & REAL Labs
Source: UT Austin RobIn Lab