Dobot is a 4-axis, high precision, open source, desktop, Arduino-based, stepper motor robotic arm. Its mechanical accuracy is 0.02mm and repeat precision 0.2mm. Its mechanical structure is developed by the state-of-art CNC cutting technology, ensuring the durability and precision. It has seven control methods, including PC, mobile app, voice, vision, gesture, leap motion and EEG. It can do many things like pouring wine, playing piano and even put the thread into the eye of a needle with its high precision! It will release you from the duplication like stir eggs and stir solutions when doing experiment. We definitely can say: Dobot is the best in its category currently.