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Mechanical sports biped robot


OP3 is a humanoid biped robot developed by ROBOTIS company in South Korea. OP3 is the latest high-performance open source intelligent humanoid robot platform after OP2. It has advanced computing capabilities, sophisticated sensors, high payload capacity and dynamic motion balance capabilities. It is very suitable for humanoid robot research and education activities, as well as various Kind of humanoid racing competition. OP3 is 51.04cm tall and weighs 3.5kg. The development environment supports OS, Linux (64-bit), C++, ROS, Dynamixel SDK. The main applicable research directions are: SLAM, multi-machine collaboration, vision processing, remote control, network connection, gait research, AI research, machine design, human-computer interaction.


Powerful processing system
OP3 robot built-in PC: Intel NUC, with Intel Core i3 processor, RAM 8GB DDR4, 128GB M.2 solid state drive. Built-in management controller (OpenCR): ARM Cortex-M7.
Multi-degree-of-freedom execution module
0 actuator modules (6 DOF legs x 2+3 DOF arms x 2+2 DOF necks), actuators (DYNAMIXEL XM430) with durable metal casings and gears, with a 4.5Mbps high-speed Dynamixel bus for joint control.
Possesses perception and recognition capabilities
Equipped with three-axis gyroscope, three-axis acceleration sensor, three-axis magnetometer, button x4, microphone x2, speaker x1, high-definition webcam.
Detachable and configurable hardware
The assembly provides robot mechanics information, including: size, kinematics, dynamics, and CAD data. Provide robot electronic information, including: controller, sub-B/Ds, schematic diagram, and part information.
Full open source software environment
提Provide software information, including: development environment, framework, source code. Support OS, Linux (64-bit), C++, ROS, Dynamixel SDK. Provide management information, including detailed assembly drawings and user maintenance guides. Provide community resources including user-developed code and various application routines.

Technical index

Technical parameters


Equipment name


The main technical parameters

robot Hardware 


1. Humanoid biped structure;

2. Height: 51.04cm; 3.5 kg;

3. Degree of freedom: 20;

4. Battery: 3 lithium batteries, 11. 1V 1800mA.


1. Camera, Logitech C920 HD professional webcam;

2. Main controller, Inter NUC i3, dual-core i3 processor, 8GB RAM DDR4 SODIMMs 2133MHz 128GB M.2.SSD;

3. Sub-controller, OpenCR ARM Cortex-M7 Micro-B USB, TTL/RS-485, UART, CAN;

4. Servo XM430-W350-R;

5. Inertial sensing unit: three-axis gyroscope, three-axis accelerometer, three-axis magnetometer;

6. IO device: RGB LED*1, LED*3 (red, green and blue), button*4, speaker*1, microphone*2.

Robot software


1. Operating system: OS; Linux (64-bit); C++; ROS; Dynamixel SDK;

2. Programming language: support C++/Python programming language;

3. Network: Ethernet 10/100/1000 Mbps Ethernet 802. 11ac (2.4GHz, 5GHz), Bluetooth 4.1;

4. Provide visual programming software.

Configure a custom platform. Explore all accessories.

main controller

Can be upgraded, the interface can be upgraded


Can be upgraded, the interface can be upgraded

Steering gear

Upgradeable, high torque

See our robots working in the most demanding environments for researchers around the world.
Data download
[Training] ROBOTIS OP3

Donghu Robot Laboratory, 2nd Floor, Baogu Innovation and Entrepreneurship Center,Wuhan City,Hubei Province,China

Technical Support

ROS Training

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