Feature 1) Ample parts for you to build your own robot at your pleasure. 2) Powerful functions, lots of I/O ports on main controller and various sensors, enable you to bring your imagination into full play. 3) USB2.0 download cable makes it easy for program download and PC-robot communication. 4) Easy to learn and easy to use. The programming platform can perform functions of icon-base flow chart editing, C-language code editing, and sensor data logging. Thus no matter you are a newcomer or a seasoned robotics hobbyist, you can program as you please. 5) On-line courses, fit for personal learning and training organization. About X-RCU Built-in dot matrix characters LCD. 8 analog ports and 12 digital ports which can be designed as I/O freely. 2 motor ports of high current. Built-in speaker. Low voltage indicator and communication indicator.