SUMMARY:

 

Roban 2 is a medium‑size, 22‑DOF bipedal humanoid robot developed by Leju Robotics for education, AI research, gait development, and robotics training. It features precise electric actuators, stereo RGB‑D depth cameras, a 6‑microphone array, ROS + Linux, and self‑stabilizing bipedal locomotion.  

 

EDITORIAL:

 

Roban 2 is one of the most widely used education‑grade humanoids in China’s university and vocational‑training ecosystem. Unlike toy‑class robots, Roban 2 is built as a true research platform:

 

- 22 DOF with smooth electric actuators  

- Full ROS stack for motion, vision, and speech  

- Stereo depth sensing (RealSense‑class RGB‑D)  

- Self‑stabilizing gait based on an improved LIPM model  

- Open development environment (Python, ROS, Linux)

 

Leju positions Roban 2 as the gateway robot for students transitioning into advanced humanoid robotics — a bridge between small hobby robots and full‑scale platforms like KUAVO or TORA.

 

SPECIFICATIONS:

 

Dimensions & Build

(Leju does not publish exact height/weight; inferred from product class)  

- Category: Medium‑size biped humanoid  

- Weight: ~6 kg shipping weight (Alibaba listing)  

- Construction: Plastic + metal internal frame  

- Manufacturer: Leju Robotics (Shenzhen / Suzhou)  

 

Mobility

- Locomotion: Bipedal walking  

- Gait: Self‑stabilizing, LIPM‑based semi‑closed‑loop gait  

- Terrain: Indoor, flat surfaces  

- Control: ROS‑adjustable walking parameters  

 

Degrees of Freedom

- Total DOF: 22  

- Actuators: Precise electric servos across all joints  

 

Actuation & Manipulation

- Actuator type: Electric servo actuators  

- Capabilities:  

  - Arm gestures  

  - Basic object interaction (lightweight)  

  - Demonstration of humanoid kinematics  

- Hands: Simple grippers or non‑functional (varies by configuration)  

 

Perception & Sensors

- Vision:  

  - HD stereo depth camera (RGB‑D, global shutter, wide FOV, active IR)  

  - RealSense D435‑class depth sensing up to 10 m  

- Audio:  

  - 6‑microphone array with spatial filtering  

  - 360° sound‑source localization  

- Other sensors:  

  - IMU  

  - Joint encoders  

  - Optional external sensors via ROS  

 

Compute & Software

- OS: Linux Ubuntu 16.04 LTS  

- Middleware: ROS Kinetic  

- Programming: Python + ROS APIs  

- Features:  

  - Full open‑source kinematics (forward/inverse)  

  - Speech modules  

  - Vision modules  

  - SSH remote access  

 

Battery & Power

- Power: AC adapter (standard for educational robots)  

- Battery: Not published  

 

Connectivity

- Bluetooth (Aparobot listing)  

- Wi‑Fi via onboard Linux system  

- SSH remote control  

 

Applications

- University robotics courses  

- AI & ROS training  

- Humanoid gait research  

- Vision & SLAM experiments  

- Speech & NLP demonstrations  

- STEM education  

 

Pricing

- $25,000

 

WHAT LEJU HAS NOT PUBLISHED

- Exact height  

- Exact weight  

- Battery capacity  

- Walking speed  

- Payload  

- Full sensor resolution specs  

- Commercial SKU variants  

 

Image: @chinarobotsnow

 

COMPANY SOURCE:

 

https://youtu.be/teYULfJq6bk?si=KijTRXpmVJZapdmR

 

NEWS & KEY COVERAGE:

 

https://youtu.be/teYULfJq6bk?si=KijTRXpmVJZapdmR