Power Supply Notice
Overview
6+1 Degrees of Freedom · Complete Kinematics
6 active joints + 1 end effector.
Joint configuration strictly follows the Pieper criteria, supporting analytical inverse kinematics. Transparent algorithms make it easy for teaching and secondary development.
Open-Source · Low-Cost · Easily Accessible
Available in two purchase options: pre-assembled ready-to-use unit or DIY kit for hands-on assembly—perfect for teaching and practical experimentation.
Multi-Platform Compatible · Plug & Play
Deeply compatible with LeRobot and ROS2 ecosystems.
Covers the full workflow of real robotic applications: data collection → simulation → model training → real-world deployment.
Comprehensive Learning Resources
Ideal for university courses, research labs, and self-learning developers.
LD Model: Highly Compatible Master Arm
It is also directly compatible with reBot and other arms with similar configurations.
One master arm can control multiple arms, significantly reducing the cost and complexity of building a remote operation system.
Part List
|
Violin |
Qty. |
|---|---|
|
Threadlocker |
1 |
|
Woodworking clamp |
2 |
|
Spare PCB (UC01) |
1 |
|
DC Power Pigtail (5.5×2.5mm Jack) |
1 |
|
USB-A to USB-C Cable |
1 |
|
200mm Servo Lead Wire |
1 |
|
No. 7 Screw Set |
1 |
|
No. 8 Screw Set |
1 |
|
No.9 Screw Set |
1 |
|
Mouse Pat |
1 |
Specification
|
Item |
Star Arm 102-LD |
|---|---|
|
DOF |
6+1 |
|
Joint Range |
Joint 1: ±120° Joint 2: ±163° Joint 3: 0°~270° Joint 4: ±88° Joint 5: ±66° Joint 6: ±168° Gripper: 0~120° |
|
Servos |
RA8-U01H-M for #1, #2, #3, and #4 joints; RA8-U02H-M for #5 joint; RA8-U03H-M for #6 and #7 joints; |
|
Communication Hub |
UC-01 |
|
Communication Method |
UART |
|
Angle Sensor |
12-bit magnetic encoder |
|
Power Supply (optional) |
12V2A / XT30 |
|
Weight |
663g |
|
Recommended Operating Temperature Range |
0-40℃ |
|
Works with Lerobot |
✓ |
|
Works with ROS 2 |
✓ |
ROS 2
Allows setting the current position as the origin (0°) in free mode, enabling easy zero calibration and providing a reference start for subsequent motions.
Lerobot
- Fully compatible with Hugging Face LeRobot, aligned with the latest PyTorch tooling
- All integration code is open-source
- Complete unbox → teleop → record → dataset → train workflow documentation
- Supports LeRobotDataset (v3) and optional Hugging Face Hub dataset versioning/sharing
- Start training with just one personal computer, no extra infrastructure required
CAD Drawings
Documents
Certification
|
HS Code |
9023009000 |
|
ECCN Code |
EAR99 |
|
Country of Origin |
China |
|
Certifications |
CE, FCC, RoHS |
| Weight | 2 kg |
|---|---|
| DOF |
6+1 |
| Joint Range |
Joint 1: ±120° | Joint 2: ±163° | Joint 3: 0°~270° | Joint 4: ±88° | Joint 5: ±66° | Joint 6: ±168° | Gripper: 0~120° |
| Servos |
RA8-U01H-M for #1, #2, #3, and #4 joints | RA8-U02H-M for #5 joint | RA8-U03H-M for #6 and #7 joints |
| Communication Hub |
UC-01 |
| Power Supply |
12V2A / XT30 |
| Weight |
663g |
| Operating Temperature |
0-40℃ |
| Works with ROS 2 |
✓ |
| Works with Lerobot |
✓ |
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Star Arm 102 is an open-source, low-cost 6+1 DoF Leader robotic arm for education, research, and developer applications. It is available as a complete unit or a DIY kit.
It supports direct remote operation on bare hardware, is compatible with LeRobot and ROS2, and covers the full workflow from data collection and simulation to training and deployment.
The LD model is also compatible with FL, reBot, and other similarly configured arms, enabling fast and cost-effective remote operation setup.
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