Star Arm 102-HD DIY Kit
$259.00
In stockPose-holding leader arm · requires assembly · 6+1 DoF · 420mm reach · 12-bit encoders
This product typically requires 10–14 business days to prepare before shipment.
Power Supply Notice
Overview
Pose-Holding Leader Arm After the Build
The kit includes 11 3D-printed structural parts and 7 joint servos: RP8-U45H-M ×4 and RP8-U45H-M-C029 ×3 (Joint 5, Joint 6, and Wrist). The arm weighs 883g when the build is complete; allow approximately 1–2 hours for hands-on assembly.
High-Torque RP8 Performance After the Build
When the build is complete, the leader arm delivers the same 420mm reach, 6+1 DoF, pose-holding capability, and joint ranges listed in the Specification. The RP8 servos provide stable, high-torque motion for precise demonstrations, calibration, and trajectory recording.
LeRobot Compatibility After the Build
After the build, Star Arm 102-HD remains a pose-holding Leader arm for LeRobot teleoperation, demonstration data collection, model training, and physical deployment. It also works with ROS 2 Humble, the Python SDK, and compatible Follower arms.
Complete Tools for the Build
The box includes the required screw kit, threadlocker, woodworking clamps, mouse pad, base plate, UC-01 electronics, XT30 power adapter cable, 200mm servo extension cable, and USB-A to USB-C cable. Follow the assembly guide step by step; no additional tool purchase is needed.
After the Build: Calibration
Before powering on, align each Star Arm 102-HD joint to its zero-position mark by hand.
Open the Web-Based Control Interface and run one-click zero-point calibration.
Jog each joint in small increments to verify direction and range limits before teleoperation or demos.
Media Gallery
Development Ecosystem
LeRobot Ecosystem Integration
The Star Arm 102-HD natively supports LeRobot workflows for teleoperation, demonstration data collection, model training, and physical deployment. Its pose-holding capability enables stable step-by-step demonstrations and extended trajectory recording for imitation learning research.
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
All mechanical parts, servos, fasteners and tools required for assembly are included — no extra purchase needed.
|
102-HD |
Qty. |
|---|---|
|
3D-printed structural parts |
1 |
|
Servos |
7 |
|
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 |
|
Screws |
1 |
|
Threadlocker |
1 |
Specification
|
Item |
Star Arm 102-HD (DIY Kit) |
|---|---|
|
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 | RP8-U45H-M-C029 ×3 (Joint 5, Joint 6, Wrist) |
|
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. DIY Kit orders for the Star Arm 102-HD, 102-FL and PiPER Mate are made to order and typically require 10–14 business days to prepare before shipment.
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.
