Star Arm 102 · Open Source Robot Arm

Robot Arm Platform for Education & Research

Leader-Follower Teleoperation & Star Arm 102 Open Platform

⚡ 6+1 DOF🤗 LeRobot🐍 Python SDK0.088° Precision
Star Arm 102 Robot Arm Platform for Education and Research
🤗 LeRobot Certified
SDK & Platform Support

Build with the Star Arm 102 Development Ecosystem

Use the web control app, Python SDK, ROS2 Humble and LeRobot across the series, with MoveIt2 and Gazebo support for the FL follower arm.

Python SDK
ROS2 Humble
LeRobot
MoveIt2 (FL)
Gazebo (FL)

Start with the browser-based control app or Python SDK, connect through ROS2 Humble and LeRobot, and use MoveIt2 or Gazebo for FL motion planning and simulation.

Product Models

Star Arm 102 Series

Three robot arm models for teleoperation, precision data collection, and task execution.

Star Arm 102-LD Leader Arm for Teleoperation
721g Ultra-light

Star Arm 102-LD

Leader control arm for teleoperation and motion data collection. Ultra-lightweight design with 12-bit magnetic encoders.

  • 721g lightweight design
  • 12-bit encoder (0.088°)
  • LeRobot teleoperation
Star Arm 102-HD Leader Arm with Hover Function
Hover Function

Star Arm 102-HD

Professional leader arm with hover function. High-torque servos maintain arbitrary position for precision data collection.

  • 420mm arm reach
  • High-torque hover
  • Precision collection
Star Arm 102-FL Follower Arm for Execution
500g Payload

Star Arm 102-FL

Follower execution arm for pick-and-place tasks. 500g payload with ROS2 and MoveIt2 support for automation.

  • 500g payload capacity
  • ROS2 & MoveIt2
  • Gazebo simulation
Model Comparison

Compare Star Arm 102 Models at a Glance

Compare the three Star Arm 102 models side by side to select the right configuration.

Specification Star Arm 102-LDLightweight Master Star Arm 102-HDHover Master Star Arm 102-FLFollower Arm
Core PositionLightweight teaching / rapid data collectionProfessional hover teaching / high-precision collectionTask execution / physical operation
ReachStandard420mm (large reach)Standard
DoF6+16+16+1
Weight721g883g791g
PayloadNo operational loadNo operational load500g
Repeatability5 – 8 mm
Hover Function❌ No, drops when released✅ Hover✅ Position hold
Servo ConfigurationRA8 series lightweight low-dampingRP8-U45H-M all high-torqueRA8-U35H-M + RX8-U50H-M
Power Supply12V 2A12V 10A12V 10A
Python SDK✅ Supported✅ Supported✅ Supported
ROS2 Humble✅ Supported✅ Supported✅ Supported
MoveIt2❌ Not supported❌ Not supported✅ Supported
Gazebo Simulation❌ Not supported❌ Not supported✅ Supported
LeRobot✅ Teleoperator✅ Teleoperator✅ Execution robot
Independent OperationCollection only, handheld dragCollection only, hover holdRequires program or master control
Best ForEducation demos, entry-level data collectionResearch-grade precision collection, professional teleoperationAlgorithm development, automation experiments, physical execution

Quick rule: LD for lightweight teaching, HD for professional hover teaching, FL for task execution.

StarAI Arm Series

Teleoperation and Embodied AI Robot Arms

Separate from the Star Arm 102 series, StarAI Arm is a coordinated leader-and-follower platform for teleoperation, manipulation research, demonstration collection and embodied AI development.

StarAI Arm Cello extended-reach follower robot arm
High-Payload Follower

Cello — Extended Reach for Demanding Manipulation

With 670mm reach, a 750g working payload and ±1mm repeatability, Cello is the higher-capacity follower arm for teleoperation, manipulation research and AI robotics workflows that need greater reach and load capability.

StarAI Arm Violin leader robot arm for teleoperation
Teleoperation Leader

Violin — Intuitive Control and Demonstration

Violin is the 6+1 DoF leader arm for real-time teleoperation, drag-to-teach demonstrations and robot learning data collection. Pair it with Cello or Viola to control a follower arm and capture natural manipulation trajectories.

StarAI Arm Viola compact follower robot arm
Compact Follower

Viola — Compact Manipulation for Learning and Research

With 470mm reach, a 300g working payload and ±2mm repeatability, Viola is the compact follower arm for desktop manipulation, teleoperation and accessible embodied AI experiments.

FAQ

Star Arm 102 FAQ

Answers about model selection, teleoperation, software and robot development.

What is the Star Arm 102?

Star Arm 102 is an open-source 6+1 DoF robot arm platform for teleoperation, teaching, robotics development and embodied AI. The series includes LD and HD Leader arms for motion input and the FL Follower arm for task execution.

Which Star Arm 102 model should I choose?

Choose the lightweight LD Leader for teaching and rapid data collection, the HD Leader for stable hover positioning and precise demonstrations, or the FL Follower for robotic manipulation, automation and physical AI deployment.

Can Star Arm 102 be used for teleoperation and data collection?

Yes. Pair an LD or HD Leader with an FL Follower for real-time master-slave teleoperation, trajectory recording and imitation-learning dataset collection. A Leader arm can also record demonstrations independently.

Which SDKs and robot development tools are supported?

Star Arm 102 supports browser-based control, the Python SDK, ROS2 Humble and LeRobot. The FL Follower also supports MoveIt2 motion planning and Gazebo simulation for robot development and testing.

Is Star Arm 102 compatible with LeRobot?

Yes. LD and HD can operate as LeRobot teleoperators, while FL serves as the execution robot. The workflow covers teleoperation, dataset collection, model training and deployment to the physical arm.

Are CAD files, 3D models and assembly resources available?

Yes. Star Arm 102 provides CAD drawings, STEP files, 3D-printable models, BOM information, assembly guidance, software examples and troubleshooting documentation for ready-built or self-assembled projects.