Annin Robotics :: Open-Source, Desktop-Sized 6-Axis Industrial Robots

Annin Robotics is a U.S.-based company specializing in open-source, desktop-sized 6-axis industrial robots that are accessible to makers, educators, students, and small manufacturers. Founded by automation industry veteran Annin, the company’s flagship product is the AR4, a low-cost, build-it-yourself robotic arm designed to democratize industrial robotics. The AR4 is fully open-source, with complete 3D-printable or machinable part files, detailed assembly instructions, and software support, making it one of the most approachable professional-grade robots available for personal, educational, and light industrial use.

The AR4 is a compact yet capable 6-degree-of-freedom (6DOF) robotic arm that fits on a standard desk. It features strong repeatability, solid payload capacity for its size, and support for popular control methods including Arduino, Python, ROS (Robot Operating System), and G-code. Users can 3D print the parts themselves or machine them from aluminum for greater durability. The robot supports a wide variety of end-effectors, sensors, and grippers, allowing customization for specific tasks.

Primary Applications:

• Education: Widely used in high schools, colleges, and universities for teaching robotics, programming, mechatronics, and automation concepts. Its open-source nature makes it ideal for student projects and STEM programs.
• Research & Prototyping: Researchers and hobbyists use the AR4 for computer vision experiments, AI integration, pick-and-place tasks, and custom automation development.
• Light Industrial Use: Small workshops and startups deploy the AR4 for light assembly, CNC machine tending, packaging, labeling, and other repetitive tasks. It supports Modbus communication for integration with PLCs and industrial equipment.

The AR4 is praised for its affordability, educational value, and flexibility. Users can modify the design, add custom tools, and experiment freely thanks to the open-source philosophy. The company provides detailed documentation, community support, and resources for both beginners and advanced users. Annin Robotics continues to refine the AR4 platform while fostering a global community of builders, educators, and makers who share their projects and improvements. The AR4 represents a significant step toward making professional robotics technology accessible beyond large corporations and research labs.