The DFRobotShop Rover is the most affordable programmable mobile robot and no doubt, one of the most popular. This Arduino-based tracked platform is pretty neat and is very useful for beginners or seasoned roboticists who need a versatile robotic platform that just works.
Original DFRobotS
This is a companion discussion topic for the original entry at https://community.robotshop.com/blog/show/dfrobotshop-rover-2-0-soon-available-for-pre-order