Hiwonder NexArm LeRobot Open-Source 6-Axis Robotic Arm for Embodied AI, Imitation Learning, and ESP32 Development

Product Description NexArm is a high-performance open-source AI robotic arm from Hiwonder. Built on ESP32, it offers a full-stack solution from low-level hardware to end-to-end large AI model validation workflows, designed for AI education and embodied intelligence research. With deep LeRobot integration, NexArm can directly access a wide range of models, datasets, and simulation environments on Hugging Face. It works with Raspberry Pi, NVIDIA Jetson, and PCs with discrete GPUs, making it easy to run end-to-end algorithms such as ACT and complete the workflow from virtual simulation to real-world deployment. NexArm supports a Leader-Follower teleoperation system with a leader arm and a follower arm, purpose-built for imitation learning and VLA model development. It synchronously captures multi-channel HD video from the end-effector first-person view and the global third-person view, helping build multi-dimensional training datasets with full scene coverage. NexArm features an industrial-grade all-metal body, high-precision magnetic encoder servos in the core joints, a rotating pan-tilt unit, and a precision rail gripper, delivering an effective operating radius of up to 500 mm. Built-in inverse kinematics enables Cartesian coordinate control and advanced motion planning for precise, reliable grasping and trajectory execution. With open-source code, professional PC software, a mobile app, custom development examples, and structured tutorials, NexArm lowers the barrier to embodied intelligence development and brings AI ideas into real-world applications faster. 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. Seamless Hugging Face Ecosystem Integration The leader arm uses a 1:147 gear ratio for high-frequency demonstration capture, while the follower arm uses a 1:345 reduction ratio for superior positioning stability. This enables smooth access to Hugging Face community models for end-to-end imitation learning. 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. Parallel-Rail Gripper Silicone gripper pads and stainless-steel transmission components ensure asecure grip and improved durability. 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 Follower arm: HX-12H × 2 + HX-30HM × 3 + HX-65HM × 1 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 Packaging weight and volume Leader Arm: 3.2kg, 345 × 158 × 220 mm Follower Arm: 2.9kg, 345 × 158 × 220 mm Standard Kit: 6.7kg, 487 × 290 × 195 mm Advanced Kit: 7.9kg, 487 × 290 × 195 mm 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 Follower arm: HX-12H × 2 + HX-30HM × 3 + HX-65HM × 1 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 Packaging weight and volume Leader Arm: 3.2kg, 345 × 158 × 220 mm Follower Arm: 2.9kg, 345 × 158 × 220 mm Standard Kit: 6.7kg, 487 × 290 × 195 mm Advanced Kit: 7.9kg, 487 × 290 × 195 mm Packing List Specifications 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 Follower arm: HX-12H × 2 + HX-30HM × 3 + HX-65HM × 1 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 Packaging weight and volume Leader Arm: 3.2kg, 345 × 158 × 220 mm Follower Arm: 2.9kg, 345 × 158 × 220 mm Standard Kit: 6.7kg, 487 × 290 × 195 mm Advanced Kit: 7.9kg, 487 × 290 × 195 mm