So you would like to turn your tablet into a telepresence robot to video chat with people over the Internet? Ralph is just the kit for the job. It comes with the Husarion CORE2 controller. It has an open firmware. You can steer this robot from anywhere in the world using a web browser.
Ralph has two wheels, two servos, and one orientation sensor that keep it balanced. Online development tools are available for modifying its behavior.[where to find it]