NexArm AI Robotic Arm – ESP32 & AT32 Open-Source Robot with VLA, AI Vision, Multimodal LLM & LeRobot
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【Next-Gen Embodied AI Robotic Arm】Built on an ESP32 + AT32 dual-chip architecture with an all-metal body and advanced inverse kinematics, NexArm supports end-to-end imitation learning and Vision-Language-Action (VLA) model development.
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【LeRobot Compatibility & VLA Model Training】Fully integrated with the LeRobot ecosystem, NexArm allows developers to collect teleoperation data, train ACT policies, and fine-tune VLA models such as π0 and SmolVLA. It provides access to community models, datasets, and simulations.
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【65 kg·cm High-Torque Magnetic Encoder Bus Servos】Industrial-grade servos with trapezoidal acceleration/deceleration and curve-smoothing algorithms deliver smooth motion and ±2 mm repeatability, suitable for precise behavior cloning and real-world policy deployment.
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【K230 AI Vision Module & Multimodal Interaction】Equipped with a 6 TOPS K230 AI vision module supporting color, object, and gesture recognition, plus voice interaction. Enables hand-eye coordination and high-quality vision-action data collection for imitation learning.
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【Open-Source Platform & Research Applications】Includes open-source code, schematics, PC software, and tutorials. Suitable for researchers experimenting with Real2Sim2Real pipelines, closed-loop evaluation, and full-scenario embodied AI systems.
Product Description
NexArm is an open-source AI robotic arm platform designed for embodied AI and VLA (Vision-Language-Action) learning. It combines high-precision motion control, AI vision, and full LeRobot compatibility, covering the workflow from teleoperation data collection and imitation learning to real-world deployment of models such as ACT and SmolVLA.Featuring a K230 AI vision module, NexArm supports voice interaction, visual perception, and hand-eye coordination. It can also integrate with mobile chassis and other systems for broader embodied AI applications.
High-Precision Magnetic Encoder Bus Servo
Built around a dual-output-shaft magnetic encoder servo system with all-metal gears. A powerful magnetic motor and real-time feedback from multiple algorithms ensure precise and stable joint movement.
Advanced Inverse Kinematics Algorithms
NexArm can detect target objects within the recognition area, calculate their position coordinates and placement angle, and adaptively adjust each joint through inverse kinematics to enable flexible grasping.
Built for Imitation Learning
Supports a leader-follower teleoperation system composed of a leader arm and a follower arm, with deep compatibility at the underlying level with the latest Hugging Face LeRobot framework.
K230-Powered Hand-Eye Coordination
Powered by the K230 module with 6 TOPS of computing power, NexArm supports 30+ AI vision functions including YOLO, as well as multimodal large-model deployment for advanced AI applications in complex scenarios.
Color Recognition
NexArm can accurately identify objects of different colors within its field of view, with different preset actions triggered through programming.
Face Recognition
Backed by the K230 chip's 6 TOPS of equivalent compute, NexArm can recognize and remember different faces, then trigger different programmed responses.
Gesture Recognition
Using the K230 vision module's YOLO algorithm, NexArm can accurately recognize different hand gestures and respond with different actions.
AI Waste Sorting
Powered by deep learning on the K230 vision module, NexArm can recognize different waste cards and sort them to designated locations based on instructions.
Visual Object Tracking
With large vision model analysis, NexArm can track and lock onto any object within its field of view.
Complex Task Management
NexArm can break down complex voice commands on its own and place items in the corresponding areas to complete complex handling tasks.
Smart Home Assistant
NexArm can send the live scene in view to a large vision model and combine it with instructions to generate matching language responses and actions.
Intelligent Sorting
With support from a large vision model, NexArm can identify target objects in view, adjust its posture in real time based on instructions, and pick and sort them into designated locations.
Cross-Platform Control and Connectivity
App Control
Through the app, each NexArm joint can be controlled independently. Designated objects can also be grasped and sorted with flexible control, while preset action groups can be called up quickly.
Offline Drag Teaching
The leader arm can be dragged offline for intuitive demonstration. Combined with advanced imitation learning algorithms, the follower arm can accurately reproduce motion and grasping trajectories.
Wireless Multi-Device Control
Supports multilingual remote collaboration across multiple devices, with unicast, multicast, and broadcast modes. Automated scenarios can be deployed with ease, helping build a highly responsive AIoT collaborative ecosystem.
Wireless Controller Control
Equipped with a PS3 wireless controller and low-latency one-to-one pairing, allowing multiple devices to run side by side without interference. Programming support also enables different feedback actions on NexArm.
High-Performance Hardware
Specification Parameters
| Product Parameters | ||
| Brand | Hiwonder | |
| Product name | NexArm open-source embodied AI robotic arm | |
| Material | Metal frame | |
| Dimensions | Leader arm: 111 × 216 × 619 mm | Follower arm: 111 × 111 × 614 mm |
| Weight | Leader arm: 1.2 kg | Follower arm: 1.3 kg |
| Servos | Leader arm: HX-10HM × 5 + HX-12H × 1 servo | Follower arm: HX-12H × 2 + HX-30HM × 3 + HX-65HM × 1 servo |
| Controller | NexArm follower arm controller, NexArm leader arm controller | |
| Power supply | 12V 5A DC 5.5 × 2.5 | |
| Operating system | Windows / Linux / macOS | |
| Control method | USB serial / Bluetooth / Wi-Fi | |
| Programming tool | Arduino IDE | |
| Package weight & dimensions | Starter Kit: 2kg, 345 × 158 × 220 mm Standard Kit: 3.2kg, 345 × 158 × 220 mm Advanced Kit: 3.3kg, 345 × 158 × 220 mm Ultimate Kit: 8kg, 487 × 290 × 195 mm |
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| Product Parameters | ||
| Brand | Hiwonder | |
| Product name | NexArm open-source embodied AI robotic arm | |
| Material | Metal frame | |
| Dimensions | Leader arm: 111 × 216 × 619 mm | Follower arm: 111 × 111 × 614 mm |
| Weight | Leader arm: 1.2 kg | Follower arm: 1.3 kg |
| Servos | Leader arm: HX-10HM × 5 + HX-12H × 1 servo | Follower arm: HX-12H × 2 + HX-30HM × 3 + HX-65HM × 1 servo |
| Controller | NexArm follower arm controller, NexArm leader arm controller | |
| Power supply | 12V 5A DC 5.5 × 2.5 | |
| Operating system | Windows / Linux / macOS | |
| Control method | USB serial / Bluetooth / Wi-Fi | |
| Programming tool | Arduino IDE | |
| Package weight & dimensions | Starter Kit: 2kg, 345 × 158 × 220 mm Standard Kit: 3.2kg, 345 × 158 × 220 mm Advanced Kit: 3.3kg, 345 × 158 × 220 mm Ultimate Kit: 8kg, 487 × 290 × 195 mm |
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Videos
What is NexArm? >>>
Hiwonder NexArm — Open-Source AI Robot Arm for LeRobot, VLA & Imitation Learning
Blog
《Smooth Mastery: NexArm Redefines Motion Aesthetics for Desktop Robotic Arms》
《Decoding the Secret Behind NexArm's Silky‑Smooth Motion》
| Item | Specification | |
| Brand | Hiwonder | |
| Product name | NexArm open-source embodied AI robotic arm | |
| Material | Metal frame | |
| Dimensions | Leader arm: 111 × 216 × 619 mm | Follower arm: 111 × 111 × 614 mm |
| Weight | Leader arm: 1.2 kg | Follower arm: 1.3 kg |
| Servos | Leader arm: HX-10HM × 5 + HX-12H × 1 servo | Follower arm: HX-12H × 2 + HX-30HM × 3 + HX-65HM × 1 servo |
| Controller | NexArm follower arm controller, NexArm leader arm controller | |
| Power supply | 12V 5A DC 5.5 × 2.5 | |
| Operating system | Windows / Linux / macOS | |
| Control method | USB serial / Bluetooth / Wi-Fi | |
| Programming tool | Arduino IDE | |
| Package weight & dimensions | Starter Kit: 2kg, 345 × 158 × 220 mm Standard Kit: 3.2kg, 345 × 158 × 220 mm Advanced Kit: 3.3kg, 345 × 158 × 220 mm Ultimate Kit: 8kg, 487 × 290 × 195 mm | |
Shipping & Delivery
1. Free Shipping Policy
Hiwonder offers free standard shipping on orders over US $499 (before tax and duties), delivered via trusted carriers such as DHL, UPS, or FedEx.
Most orders arrive within 6 working days after dispatch. You can check if your country is eligible for free shipping in the regions listed below.
Eligible Regions
- Americas: United States, Canada, Mexico, Chile
- Europe: Germany, United Kingdom, Netherlands, Switzerland, France, Austria, Italy, Belgium, Spain, Sweden, Finland, Norway, Portugal, Czech Republic, Poland, Greece, Slovenia, Romania, Denmark, Bulgaria, Luxembourg, Slovakia, Hungary, Ireland, Estonia, Lithuania
- Asia: China, Japan, Singapore, South Korea, United Arab Emirates, Malaysia, Thailand, Philippines, Indonesia
- Oceania: Australia, New Zealand
If your country or region is not listed above, the shipping cost will be automatically calculated at checkout once you enter your shipping address.
2. Customs & Import Fees
All international shipments are subject to local customs regulations. Import duties, taxes, or other fees may be charged by your country's customs authority upon arrival.
Our shipping term is FOB Shenzhen, which means these fees, if any, are the customer's responsibility. The shipping carriers will assist with the customs clearance process to ensure smooth delivery.
If a package is returned due to unpaid customs duties, any related return or reshipping fees will be deducted from your refund.
3. Order Processing Time
Orders are typically processed within 24 hours after placement and shipped the next business day.
Orders placed on weekends or public holidays will be shipped on the next working day.
Once shipped, you will receive a confirmation email with tracking information.
