【Open-Source LeRobot Platform】The SO-ARM101 (SO-101) is a fully open-source 6-axis robotic arm built for the Hugging Face LeRobot ecosystem. It provides a practical, low-cost platform for imitation learning, behavior cloning, and teleoperation data collection.
【VLA Model Training & End-to-End Algorithms】Designed for training Vision-Language-Action (VLA) models such as ACT, π0, and SmolVLA. Developers can record episodes, train policies, fine-tune models, and share datasets directly within the LeRobot framework.
【Leader-Follower Teleoperation & Dataset Collection】Supports synchronous teleoperation with leader and follower arms. Dual HD cameras capture vision-action data suitable for Open X-Embodiment style datasets and high-quality policy training.
【Dual-Camera Vision & High-Performance Hardware】Features a gripper-mounted camera plus an external camera, paired with six 30KG high-torque servos with magnetic feedback. This combination enables stable motion and accurate environmental awareness for imitation learning.
【Professional Tools & Research Applications】Includes BusLinker V3.0 software for servo control, monitoring, and trajectory management. Suitable for researchers and students working on Real2Sim2Real pipelines and closed-loop evaluation.
The SO-ARM101 (SO-101) is an open-source, leader-follower teleoperation robotic arm kit designed for the LeRobot ecosystem. It provides students and researchers with an accessible, hands-on platform for imitation learning, behavior cloning, and training Vision-Language-Action (VLA) models such as ACT, π0, and SmolVLA.Built on the original open-source design, the hardware has been optimized with high-torque servos to deliver smooth, stable motion and reduce jitter. This allows users to focus on AI algorithm development, teleoperation data collection, and Real2Sim2Real experiments rather than hardware troubleshooting.
Hugging Face LeRobot is an open-source robotic ecosystem that includes a Python library and model-sharing platform. It offers tools, datasets, and pre-trained models to help developers, students, and enthusiasts apply technologies like imitation learning and reinforcement learning in robot development.
Train it to perform tasks via imitation or reinforcement learning. From grasping specific objects to mimicking human motion trajectories, it adapts to any application. The entire project is open-source, spanning mechanical design, code, pretrained models, and algorithm libraries.
Ideal for teaching experiments and research in fields such as robotics, artificial intelligence, and automation.
Used for algorithm development, product prototyping, and participating in robotics competitions.
An ideal teaching tool for advanced courses like AI programming.
Perfect for DIY projects, building a cutting-edge robot to practice AI technology.
Meet Hiwonder NexArm — an advanced LeRobot-compatible robotic arm platform designed for more demanding robotics research and embodied AI development.
| Brand | Hiwonder | ||
| Product | SO-ARM101 Embodied Intelligent Open-Source Robotic Arm | ||
| Product material | PLA (Polylactic Acid) | ||
| Size | Leader arm: 111 × 239 × 525 mm | Follower arm: 111 × 173 × 532 mm | Camera mount: 166 × 258 × 527 mm |
| Weight | Leader arm: 697g | Follower arm: 704g | Camera mount: 1178g |
| Servo | HX-10HM bus servo ×6 | HX-30HM bus servo ×6 | / |
| Controller | BusLinker V3.0 Servo Debugging Board | ||
| Camera | 300K Pixel HD wide-angle camera (480P), 2MP HD wide-angle camera (1080P) | ||
| Power supply | 12V 5A (DC4.0*1.7) | ||
| Operating system | Windows / Ubuntu | ||
| Communication method | USB serial port | ||
| Programming tools | Python | ||
| Package Weight & Dimensions | DIY Kit: 5.23kg, 512 × 240 × 225 mm Starter Kit: 4.33kg, 512 × 240 × 225 mm Standard Kit: 4.38kg, 512 × 240 × 225 mm Advanced Kit: 5.6kg, 512 × 240 × 225 mm |
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| Item | Specification | ||
| Brand | Hiwonder | ||
| Product | SO-ARM101 Embodied Intelligent Open-Source Robotic Arm | ||
| Product material | PLA (Polylactic Acid) | ||
| Size | Leader arm: 111 × 239 × 525 mm | Follower arm: 111 × 173 × 532 mm | Camera mount: 166 × 258 × 527 mm |
| Weight | Leader arm: 697g | Follower arm: 704g | Camera mount: 1178g |
| Servo | HX-10HM bus servo ×6 | HX-30HM bus servo ×6 | / |
| Controller | BusLinker V3.0 Servo Debugging Board | ||
| Camera | 300K Pixel HD wide-angle camera (480P), 2MP HD wide-angle camera (1080P) | ||
| Power supply | 12V 5A (DC4.0*1.7) | ||
| Operating system | Windows / Ubuntu | ||
| Communication method | USB serial port | ||
| Programming tools | Python | ||
| Package Weight & Dimensions | DIY Kit: 5.23kg, 512 × 240 × 225 mm Starter Kit: 4.33kg, 512 × 240 × 225 mm Standard Kit: 4.38kg, 512 × 240 × 225 mm Advanced Kit: 5.6kg, 512 × 240 × 225 mm |
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