Patsy is a spunky Mini-Sumo robot.  Click on the image for a larger view.

Weight: 490 grams
Size: 10 cm x 10 cm x 14 cm
Motors: 2 Hitec hobby servos
Battery: single Plainview 9v NiMH
Frame: 1/16 aluminum, 1/32 brass, and PCB
Brains: Atmel 8535
Motor controller: TI SN754410
Sensors:
  2 x Sharp GP2D12 IR distance sensors
  2 x Bump sensors (contact switches)
  4 x IR Emitter/Detector downward edge sensors

So far Patsy has only competed against two opponents:  a one pound block of wood (shown at left), and Dennis Clark's Godzuki, at a meeting of the Front Range Robotics club in March 2001.

As of this writing, Patsy is undefeated.