Arduino Mega 2560 DIY hexapod robot 11:22 am April 18, 2023 By Julian Horsey ...

The controller is an Arduino Mega, and stepper motors with a CNC shield drive the whole assembly. Interestingly, the motor and electronics are all onboard the jellyfish itself, rather than the wall.

1. Arduino Mega: This microcontroller is the brain of the operation, handling both the chess logic and the control of the robotic arm.

Apparently, so does [salmec] who developed the Mowerino around an Arduino Mega 2560 board. As you might expect, the robot uses sharp blades so, you probably want to be careful.