built by Michael Gardner

Target Environment Locomotion Method
Sensors / Input Devices Actuators / Output Devices
7 ultrasonic range finders
3 bump switches
Vector 2x electronic compass
6vdc power window motors
Control Method Power Source
Autonomous Battery
CPU Type Operating System
Intel 80x86 N/A
Programming Lanuage Weight
Time to build Cost to build
13 months $1000 - $1500
URL for more information
CRIS (Computerized Robot Intelligence System) is a fully autonomous mobile robot that I built as a senior at Brewer High School in White Settlement, Texas (just west of Ft. Worth). It was created as a flexible, easily programmed research platform for the testing of various AI algorithms. At the time that it was entered in the 1997 Fort Worth Regional Science Fair, the robot?s main function was to travel through an unknown space for a given amount of time and then find its way back to its origin based solely on sensor readings of its environment. CRIS implements seven modified Radio Shack Ultrasonic Tape Measures, three bump switches, and the Vector 2X Electronic Compass for sensing coupled to a 386 via a custom made bus and ISA interface card of my own design. The robot is driven by two incredibly strong 6Vdc power window motors which each have their own Yuasa 6V, 10AH batteries. CRIS also uses another 12V, 7AH lead acid battery for the computer along with numerous AA battery packs for the various electronics. The robot is approximately 48" high and has a diameter of 18". The construction time of the robot was around 13 months after another 14 months of research and planning. The total cost was in the range of $1000 - $1500 which is pretty cheap for a project of this magnitude.

Email: gardnerm@mail.utexas.edu

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