Star Arm 102-FL DIY Kit
$315.00
In stockFollower arm · requires assembly · 6+1 DoF · 420mm reach · 500g payload · 12-bit encoders · 2 brushless servos
This product typically requires 10–14 business days to prepare before shipment.
Power Supply Notice
Overview
Follower Execution Platform After the Build
The kit includes 11 3D-printed structural parts and 7 joint servos: RA8-U35H-M ×3, RX8-U50H-M ×1, RA8-U27H-M-C005 ×2, and RA8-U35H-M-C047 ×1. The arm weighs 791g when the build is complete; allow approximately 1–2 hours for hands-on assembly.
500g Payload After the Build
When the build is complete, the Follower arm delivers the same 420mm reach, 6+1 DoF, ±0.5mm repeatability, and 500g working payload listed in the Specification. The RA8 and brushless RX8 servos provide stable joint movement under load for grasping, handling, sorting, and trajectory execution.
LeRobot Support After the Build
After the build, Star Arm 102-FL remains the Follower and physical execution platform in the Star Arm 102 system. It works with compatible Leader arms, Hugging Face LeRobot, ROS 2 Humble, URDF, MoveIt 2, and Gazebo for teleoperation, dataset collection, model training, and deployment.
Complete Tools for the Build
The box includes the required screw kit, threadlocker, woodworking clamps, mouse pad, 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-FL 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
ROS 2 Support
Python SDK
Web-Based Control Interface
Applications
Hands-on robotic arm demos for university courses — students learn kinematics, control theory, and motion planning with real hardware. The Star Arm 102-FL DIY kit lets students assemble the execution platform itself, learning how joints and payload limits translate to real motion.
AI Trajectory Collection
Batch-collect high-quality motion data for imitation learning and reinforcement learning — 12-bit encoders deliver clean, jitter-free trajectories. As the follower, the kit records and replays trajectories collected by a leader arm — assembling it clarifies how actuator selection affects accuracy.
Teleoperation Retrofit
Upgrade existing lab robotic arms with a low-cost leader-follower system — no full hardware replacement needed. Add the FL follower kit to an existing leader to build a complete leader-follower system without replacing hardware.
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 works as a workshop activity, with participants assembling the follower before running demos.
Algorithm Prototyping
Single-operator teleoperation for rapid validation of grasping, path planning, and AI robotics algorithms. Validate grasping and sorting algorithms on the FL follower kit before scaling to production setups.
Part List
All mechanical parts, servos, fasteners and tools required for assembly are included — no extra purchase needed.
|
102-FL |
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 |
|
Screws |
1 |
|
Threadlocker |
1 |
Specification
|
Item |
Star Arm 102-FL (DIY Kit) |
|---|---|
|
Reach |
420mm |
|
DOF |
6+1 |
|
Repeatability |
±0.5mm |
|
Working Payload |
500g |
|
Joint Range |
Joint 1: ±110° | Joint 2: 0°~180° | Joint 3: 0°~270° | Joint 4: ±90° | Joint 5: ±65° | Joint 6: ±150° | Gripper: 0~90° |
|
Servos |
RA8-U35H-M ×3 | RX8-U50H-M ×1 | RA8-U27H-M-C005 ×2 | RA8-U35H-M-C047 ×1 |
|
Protocol Type |
UART |
|
Communication Hub |
UC-01 |
|
Power Supply |
12V 10A / XT30 |
|
Weight |
791g |
|
Operating Temperature |
0-40℃ |
|
Works with ROS 2 |
✓ |
|
Works with Lerobot |
✓ |
|
Works with MoveIt |
✓ |
|
Works with Gazebo |
✓ |
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 |
| Repeatability | ±0.5mm |
| Working Payload | 500g |
| Joint Range | Joint 1: ±110° | Joint 2: 0°~180° | Joint 3: 0°~270° | Joint 4: ±90° | Joint 5: ±65° | Joint 6: ±150° | Gripper: 0~90° |
| Servos | RA8-U35H-M × 4 (Joints #1, #4, #7 & Gripper Joint) | RX8-U50H-M × 1 (Joint #2-3) | RA8-U27H-M-C005 × 2 (Joints #5) | RA8-U35H-M-C047 (Joints #6) |
| Protocol Type | UART |
| Communication Hub | UC-01 |
| Power Supply | 12V 10A / XT30 |
| Weight | 791g |
| Operating Temperature | 0-40℃ |
| Works with ROS 2 | ✓ |
| Works with Lerobot | ✓ |
| Works with MoveIt | ✓ |
| Works with Gazebo | ✓ |
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.
