Unitree Go2 Air

Name: Unitree Go2 Air
Brand: Unitree Robotics

Affordable quadruped robot for education and development

$1,600

The Unitree Go2 Air is an entry-level quadruped robot designed for education, research, and hobbyist development. As the most accessible variant in the Go2 series, it features 12 degrees of freedom with brushless motors, enabling agile locomotion and dynamic movements. The Go2 Air is targeted at students, educators, and developers seeking an affordable platform to explore robotics and AI applications.

Released: 2023

Overview

The Unitree Go2 Air represents Unitree Robotics' commitment to democratizing quadruped robotics by offering an affordable yet capable platform. As the base model in the Go2 family, it strips away advanced sensors like LiDAR and 3D cameras while maintaining the core mechanical excellence and motion capabilities that Unitree is known for. This approach makes it an ideal entry point for educational institutions and individual developers.

Built with a robust aluminum alloy and carbon fiber frame, the Go2 Air weighs just 15 kg but can carry payloads up to 5 kg. Its 12 high-performance brushless motors provide precise control across all joints, enabling complex gaits including trotting, running, and even jumping. The robot's compact dimensions and outdoor-capable IP54 rating make it versatile for both indoor laboratories and outdoor testing environments.

Designed with developers in mind, the Go2 Air comes with comprehensive SDK support and ROS2 compatibility, allowing users to program custom behaviors and integrate additional sensors. The platform serves as an excellent foundation for learning about legged locomotion, control algorithms, and embodied AI without the premium price tag of fully-equipped research platforms.

Key Features

12 DOF Brushless Motors: High-performance joint actuators enabling agile and dynamic quadruped locomotion
Affordable Price Point: Entry-level pricing at $1,600 USD makes quadruped robotics accessible to students and hobbyists
SDK and ROS2 Support: Comprehensive development tools with Python and C++ SDKs for custom programming and research
IP54 Rating: Weather-resistant construction allows for outdoor operation and testing in various environments
5kg Payload Capacity: Sufficient load-bearing capability for mounting additional sensors, cameras, and computing modules
Multiple Gait Modes: Pre-programmed locomotion patterns including walking, trotting, running, and jumping
Compact Design: 580mm x 310mm x 400mm footprint makes it suitable for indoor lab environments and transport

Applications

The Go2 Air is primarily targeted at educational institutions, university robotics labs, and individual researchers looking to explore quadruped locomotion without significant financial investment. It serves as an excellent teaching platform for courses in robotics, control theory, and machine learning, allowing students to gain hands-on experience with legged robot dynamics. The robot's open development environment encourages experimentation with custom gaits, terrain adaptation algorithms, and sensor integration projects.

Beyond education, the Go2 Air appeals to hobbyist developers and makers interested in robotics competitions, proof-of-concept demonstrations, and personal research projects. Its payload capacity and SDK support enable users to add vision systems, manipulators, or specialized sensors for custom applications ranging from indoor navigation research to basic inspection tasks in controlled environments.

Technical Highlights

The Go2 Air's mechanical design leverages Unitree's experience in building high-performance quadrupeds, featuring a lightweight yet durable construction that optimizes the strength-to-weight ratio. Each of the 12 joints is powered by custom brushless motors with integrated encoders, providing precise position and torque control necessary for stable dynamic locomotion. The robot achieves speeds up to 2.5 m/s while maintaining balance through its onboard IMU and proprioceptive foot force sensors.

While the Air variant omits advanced perception hardware to reduce costs, it maintains full compatibility with Unitree's software ecosystem. The robot ships with pre-trained locomotion controllers that handle terrain adaptation and gait transitions autonomously, while the open SDK allows developers to override or extend these behaviors. The platform's modular design philosophy means users can upgrade sensors or computing power as their projects evolve, making it a future-proof investment for long-term research and development initiatives.