The highly integrated Zumo 32U4 OLED is our newest Zumo robot. It improves upon the original Zumo 32U4 robot by replacing the 8×2 character LCD with a 128×64 graphical OLED display. Enhancements over the even older Zumo robot for Arduino include a built-in Arduino-compatible ATmega32U4 microcontroller, encoders for closed-loop motor control, and proximity sensors for obstacle detection. The robot is compact enough to qualify as a mini sumo robot, but its high-performance motors and integrated sensors make it versatile enough to serve as a general-purpose small robot.