I was fortunate enough to work on this  Micro Mouse during the Spring 2001 semester. 

The Square Mouse features a very unique chassis design. While perhaps over 95% of the uMouse use the "wheel chair" setup, this mouse uses two sets of wheels that are perpendicular to each other. A worm gear collapses and expands the upper and lower layers allowing the wheels to change. This chassis was designed by Patrick ?, a CSUC EE student around 1995?. The reason behind this complicated design was that the early mice at CSUC had problems turning and doing error correcting. The Square Mouse would turn a perfect 90 degree every time and the maze walls took care of the error correcting.

I made the controller board based on Aaron Lager's  (his page) design. Modifications were made to increase the reliability of the Square Mouse. 

The software of the Square Mouse was written by Mike Witham (his page). I corrected a problem in his software which enabled me to run the Mouse at a much higher speed. 

Unfortunately, this  Mouse didn't do very well in the 2001 IEEE Region 6 Competition. The main reason was that the maze made by University of Nevada at Reno didn't quite meet the specs. This Mouse was stuck in certain places.