Unitree G1
Bipedal humanoid robot by Unitree Robotics, designed as a compact research, development, and developer platform.
Applications
- Research
- Home Assistance
ROS / ROS 2 · Middleware
Kilted Kaiju·
ROS 2 (Robot Operating System 2) is an open-source collection of libraries and tools for building robotic applications. Unlike ROS 1, ROS 2 was redesigned from scratch for production use: it is built on the DDS (Data Distribution Service) standard, supports peer-to-peer communication without a central master, provides QoS, real-time guarantees and runs natively on Linux, Windows, and macOS.
ROS 2 architecture has three layers: client libraries (rclcpp, rclpy), the RMW (ROS Middleware) abstraction, and a swappable DDS implementation underneath (Fast DDS, Cyclone DDS, RTI Connext, Gurum DDS). Each node is an independent process communicating via topics, services, and actions. ROS 2 also introduces lifecycle nodes, composable nodes, and the Nav2 navigation framework.
ROS 2 is maintained by the Open Source Robotics Foundation (OSRF) and a community of thousands of contributors. It powers humanoids (NASA Valkyrie, PAL Robotics TALOS), collaborative arms (Franka Emika, Universal Robots), mobile platforms (Clearpath, Fetch), and autonomous vehicles. Releases follow a time-based model: odd years are LTS releases (Foxy, Humble, Jazzy).
Middleware is a software layer that mediates between applications, services, sensors, drivers, and execution layers. In robotics, middleware is typically responsible for inter-process communication, message passing, hardware abstraction, and module integration within a single system. The most widely used robotics middleware is ROS (Robot Operating System), which provides a publish-subscribe message bus, service calls, and a rich ecosystem of packages.
A Runtime is the environment or execution layer used to run code, load libraries, manage dependencies, and operate applications or services — either in real time or during normal system operation. In robotics this includes real-time operating system (RTOS) runtimes, ROS 2 executor runtimes, containerised execution environments (Docker, podman), and embedded C++ runtimes on microcontrollers.
An API Library is a software package that exposes programmatic interfaces for communicating with a device, service, or system. In robotics it typically forms a lightweight integration layer built on top of the manufacturer's official API or an open-source project, abstracting low-level protocol details and providing language-native bindings (Python, C++, Java, etc.).
NASA Valkyrie, PAL Robotics TALOS, Clearpath Husky/Jackal, Franka Emika Panda, Universal Robots UR-series, Boston Dynamics Spot (ROS 2 wrapper), iRobot Create 3, ANYbotics ANYmal.
1,500+ active packages, ~5M monthly downloads, 700+ contributors to rclcpp/rclpy, 12,000+ ROSCon attendees.
Bipedal humanoid robot by Unitree Robotics, designed as a compact research, development, and developer platform.
Unitree H1 is a full-size general-purpose humanoid robot (~180 cm, ~47 kg). Bipedal, 5 DOF per leg + 4 DOF per arm, 3.3 m/s walking speed, 360° perception via 3D LiDAR + depth camera, Unitree M107 PMSM joint motors with ~360 N·m peak knee torque. Standard compute: Intel Core i5/i7; optional NVIDIA Jetson Orin NX.
Figure 03 is the third-generation humanoid robot from Figure AI, designed for Helix, home environments, and scalable mass production.
Minimal ros-base install ~1 GB, desktop ~3 GB, desktop-full with Gazebo ~6 GB.
License family: Permissive
Short-term release on Ubuntu 24.04, composable nodes improvements.
LTS on Ubuntu 24.04, supported until May 2029.
Introduces type adaptation, DDS improvements.
LTS based on Ubuntu 22.04. Full Nav2 and ros2_control integration.
First LTS release (3 years support). Stable rclcpp/rclpy API.
First stable ROS 2 release.
