400元遥操95%机械臂，上海交大推出开源项目U-Arm，打造通用、低成本的人机遥操作接口

Core Insights - Shanghai Jiao Tong University has launched an open-source remote operation project called LeRobot-Anything-U-Arm, which can be built for only 400 CNY and is compatible with 95% of mainstream robotic arms [1][7]. Group 1: Cost-Effective Solution - Traditional remote operation systems are often expensive, with systems like the ALOHA project costing over 20,000 USD, while U-Arm offers a significantly lower cost alternative [1]. - The U-Arm system's total cost is under 400 CNY, with the main components being affordable servos priced at 45 CNY each [7][8]. Group 2: Hardware Design and Compatibility - U-Arm is designed to work with three main topological structures of robotic arms, allowing users to select the appropriate configuration for their specific arm type [2]. - The hardware design has been optimized for ease of use and maintenance, addressing potential usability issues encountered during remote operations [9]. Group 3: Performance and Efficiency - Experimental results show that U-Arm reduces average operation time by 39% compared to using a game controller for similar tasks, demonstrating improved efficiency in data collection [11][13]. - While U-Arm excels in speed, its success rate in precision tasks like stacking cans may decrease due to unexpected movements, which is a trade-off for the increased data collection efficiency [13][14]. Group 4: Open Source and Community Engagement - The project has made all hardware STL and STEP files, software examples, and assembly guides available on GitHub, fostering community collaboration and development [16].