Robot Name : BallROBO Project Supervisor : Dr Norbert Harle Project Students : 1) Koh Seah Wee 2) Tseng Zu Hui 3) Ng Hong Wei Description : This autonomous robot is designed to collect tennis ball on court. It is fully self-contained without human intervention. Functions : 1) Collect tennis balls with self-made mechanism. 2) Unload tennis balls to pre-defined location. 3) Microcontroller controlled, self-contained. 4) Ultrasonic sensors for obstacle avoidance. 5) Self-built GYRO system for navigation. 6) Wheel-chair configurations for robot movement propelled by two stepper motors. Parts Used : 1) Cheap aluminium frame 2) 2xStepper motors 3) Used Printer paper loader for ball collecting 4) Motorola M68HC11 microntroller chip. 5) 3xpairs of Ultrasonic Sensors. 6)GYRO - two dc motors to propel two disks(inertia) and mounted on a 360 degree pot. Problems Encountered : 1) Software development stage. 2) System integration. 3) Sensors signal acquisition. 4) Gyro stability. Time to build : This is our final year undergraduate project. We started from scratch and spent about 2 semesters (9 months)time. Cost : A$ 600.00 (remember that we are using cheap stuffs and used stuffs in printers (like motors and paper loader, see picture to believe)) Other Information : We have graduated from the uni. and further info. can refer to Dr. Norbert harle. email : n.harle@qut.edu.au tel : (07) 864 2489 Note : I heard Dr. Norbert is making a SUMO Wrestling Robot ! Email: seahwee@ncb.gov.sg