This project includes all the files needed to build a robotic arm at a construction cost of approximately 250 USD. The arm utilizes Dynamixel XL430 and Dynamixel XL330 servo motors. Additionally, you can build a second robotic arm (lead arm) based on this project to control another arm (follower arm) for around 180 USD, totaling 430 USD. With two robotic arms, more functionalities can be achieved, such as folding clothes and flipping pages of a book.