Star Arm 102-HD Leader Arm
Price range: $259.00 through $280.00
A pose-holding leader arm for teleoperation, teaching and extended data collection — available fully assembled or as a DIY kit.
High-torque coreless bus servos hold any selected pose without dropping or rebounding, so you can release the arm mid-demonstration, while the stiffer frame cuts mechanical play during fine adjustments.
It runs the same workflow as the Star Arm 102-LD on LeRobot, ROS 2 and the Python SDK, and drives the Star Arm 102-FL follower plus third-party arms such as reBot Arm B601-DM and B601-RS.
Related Products
Power Supply Notice
Overview
Upgraded from the LeRobot-listed Star Arm 102-LD
Pose Holding for Stable Demonstration
High-Torque Joints for Precise Motion Capture
420mm Reach for a Larger Operating Space
Stable Desktop Operation for Extended Use
Native Support for Robotics Development Frameworks
Assembled or DIY Kit
Fully Assembled is ready to use and costs $280 including assembly, while DIY Kit is supplied as parts for self-assembly at $259, saving $21. Fully Assembled is for plug-and-play use; DIY Kit is for teaching and hands-on practice.
Media Gallery
Development Ecosystem
LeRobot Ecosystem Integration
ROS 2 Support
Python SDK
Web-Based Control Interface
Applications
Classroom Robotics
Hands-on robotic arm demos for university courses — students learn kinematics, control theory, and motion planning with real hardware. The Star Arm 102-HD DIY kit turns assembly into a hands-on teaching module — students build the leader arm from parts before running kinematics and control labs.
AI Trajectory Collection
Batch-collect high-quality motion data for imitation learning and reinforcement learning — 12-bit encoders deliver clean, jitter-free trajectories. Assembling and calibrating the kit lets students understand encoder zero-positions and joint mapping firsthand, so collected trajectories are cleaner and easier to debug.
Teleoperation Retrofit
Upgrade existing lab robotic arms with a low-cost leader-follower system — no full hardware replacement needed. Starting from the kit keeps retrofit costs low — build the leader arm first, then pair it with an existing follower platform.
Maker & STEM Demos
Interactive robot demos for maker spaces, science fairs, and public outreach — engaging, safe, and easy to set up. The from-parts build itself works as a workshop activity, with students assembling the arm before the demo.
Algorithm Prototyping
Single-operator teleoperation for rapid validation of grasping, path planning, and AI robotics algorithms. Budget-limited labs can start with the kit and add an assembled unit later if throughput demands it.
Part List
|
102-HD |
Qty. |
|---|---|
|
Screws |
1 |
|
Threadlocker |
1 |
|
Woodworking Clamps |
2 |
|
Spare UC-01 PCB |
1 |
|
XT30 Power Adapter Cable |
1 |
|
200mm Servo Extension Cable |
1 |
|
USB-A to USB-C Cable |
1 |
|
Mouse Pad |
1 |
|
Base Plate |
1 |
|
3D-printed structural parts (DIY Kit only) |
1 |
|
Servos (DIY Kit only) |
7 |
Specification
|
Item |
Star Arm 102-HD |
|---|---|
|
Reach |
420mm |
|
DOF |
6+1 |
|
Joint Range |
Joint 1: ±110° | Joint 2: 0°~180° | Joint 3: 0°~270° | Joint 4: ±90° | Joint 5: ±65° | Joint 6: ±150° | Controller: 0~90° |
|
Servos |
RP8-U45H-M × 4 (Joints #1-#4) | RP8-U45H-M-C029 × 1 (Joint #5) | RP8-U45H-M-C029 × 2 (Joint #6 & Wrist Joint) |
|
Protocol Type |
UART |
|
Communication Hub |
UC-01 |
|
Power Supply |
12V 10A / XT30 |
|
Weight |
883g |
|
Operating Temperature |
0-40℃ |
|
Works with ROS 2 |
✓ |
|
Works with LeRobot |
✓ |
CAD Drawings
Documents
Certification
|
HS Code |
9023009000 |
|
ECCN Code |
EAR99 |
|
Country of Origin |
China |
|
Certifications |
CE, FCC, RoHS |
| Product Series | Star Arm 102 |
|---|---|
| Reach | 420mm |
| DOF | 6+1 |
| Joint Range | Joint 1: ±110° | Joint 2: 0°~180° | Joint 3: 0°~270° | Joint 4: ±90° | Joint 5: ±65° | Joint 6: ±150° | Controller: 0~90° |
| Servos | RP8-U45H-M × 4 (Joints #1-#4) | RP8-U45H-M-C029 × 1 (Joint #5) | RP8-U45H-M-C029 × 2 (Joint #6 & Wrist Joint) |
| Protocol Type | UART |
| Communication Hub | UC-01 |
| Power Supply | 12V 10A / XT30 |
| Weight | 883g |
| Operating Temperature | 0-40℃ |
| Works with ROS 2 | ✓ |
| Works with Lerobot | ✓ |
Shipping & Delivery
We ship orders to customers worldwide. Most orders are dispatched via DHL Express to provide fast, reliable international delivery with end-to-end tracking.
Processing Time
In-stock items are usually processed within 1–3 business days after payment is confirmed.
Shipping Method
Our default international shipping method is DHL Express. Other trusted express or air services may be used when appropriate.
Estimated Delivery Time
DHL Express delivery typically takes 3–7 business days after dispatch for most international destinations.
Shipping Cost
Shipping costs are calculated based on the destination, package weight, dimensions, and selected shipping method. The final shipping cost will be shown at checkout before payment.
For large-volume or special shipments, please contact us for a shipping quotation.
Customs Duties & Import Taxes
International orders may be subject to customs duties, import taxes, VAT/GST, brokerage fees, or other charges required by the destination country/region.
These charges are not included in the product price or shipping cost unless specifically stated. Customers are responsible for any applicable import duties, taxes, and customs-related fees. Please check with your local customs office before placing an order.
Order Tracking
Once your order has been shipped, we will provide a tracking number by email or through your account order details. Tracking information may take up to 24 hours to update after the shipment is collected by the carrier.
Delays & Special Situations
Delivery may be delayed due to public holidays, customs inspections, weather conditions, carrier disruptions, force majeure events, or other circumstances beyond our control.
