[Andy] stuffed some more RAM onto an Arduino Mega and his three-part walk through on the design, construction, and software is a great read and one of the more ‘hard core’ Ard ...

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.

Arduino is now offering a fully-assembled robot, designed as a base platform for electronics tinkerers' DIY robotics projects. Its hardware and software are open-source, and designed to be hacked.

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

The robot will be sold for $99 when it's available, and Kickstarter pledges of $99 or more will reserve you a robot with an estimated delivery of October 2013.