This article describes a radio-frequency controlled mobile robot, monitorizated and controlled through an embedded Java microcontroller. This project included the mobile robot design and building, as well as the control and communication software. This multidisciplinary project allowed students to learn and apply different areas of knowledge, including mechanical robot construction, electrical motor control, Java and C language programming, web graphical user interface design, real time control and RF communications. The interface with user is made with a friendly Web page allowing the control of the robot motion in real time. The user can also visualize the orientation and x-y coordinates of the robot.