Features: Standard Lynxmotion MicroMouse with front scoop modification. First Step Basic Stamp Microcontroller. 2x - Sharp GP2D05 Object detection system (IRODS) Homebrew edge detection sensor (front and rear) Despite some design flaws on my part, the robot did well and came in 3rd place. Not bad for a last minute run. Sensor I: IRODS Object Detection System Sensor II: Built from: Kodenshi # SG2BC Reflective opto-sensor as sold by All Electronics. Cat # OSR-13 They are small and very sensitive to ambient light. I used a small piece of photo negative material to shield them from any possible bright lights in the Sumo robot "arena". If you have any comments or suggestions E-MAIL Jim Munro at: jimmn@xnet.com or view my web page at: http://www.xnet.com/~jimmn/robotics.html Email: jimmn@xnet.com